Ferris wheel has a diameter of 76 m and completed one revolution every 20 min.


a)Calculate the tangential speed the car


b) Calculate the magnitude to the centripetal acceleration of one of the car

Answers

Answer 1

The tangential speed of a point on the Ferris wheel is approximately 2.01 m/s.  the magnitude of the centripetal acceleration of a point on the Ferris wheel is approximately 0.106 m/s².

The tangential speed of a point on the Ferris wheel is given by the formula:

v = (2πr) / T

where v is the tangential speed, r is the radius of the Ferris wheel (half the diameter), and T is the time taken to complete one revolution.

In this case, the diameter of the Ferris wheel is 76 m, so its radius is 38 m. It completes one revolution every 20 min, so the time taken is T = 20 min = 1200 s. Substituting these values in the formula, we get:

v = (2π × 38 m) / 1200 s

≈ 2.01 m/s

The centripetal acceleration of a point on the Ferris wheel is given by the formula:

a = v² / r

where a is the magnitude of the centripetal acceleration, v is the tangential speed, and r is the radius of the Ferris wheel.

In this case, we have already calculated the tangential speed to be approximately 2.01 m/s, and the radius of the Ferris wheel is 38 m. Substituting these values in the formula, we get:

a = (2.01 m/s)² / 38 m

≈ 0.106 m/s²

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Related Questions

Starting with H = U + PV show that for an ideal gas,Cp = Cv + Nk. (This relies On the fact that H and U are independent of pressure and volume so dH /dT (dH/dT)p and dU /dT = (dU/dT)v )

Answers

For an ideal gas, Cp = Cv + Nk starting with H = U + PV and using the fact that H and U are independent of pressure and volume.

Starting with H = U + PV, we can take the partial derivative of both sides with respect to temperature (keeping pressure constant) to get:

dH/dT = dU/dT + P(dV/dT)

But for an ideal gas, we know that P(dV/dT) = Nk, where N is the number of molecules and k is Boltzmann's constant. This is because an ideal gas follows the ideal gas law PV = NkT, which can be rearranged to P = Nk/V and then differentiated with respect to temperature to get P(dV/dT) = Nk.

So substituting this in, we get:

dH/dT = dU/dT + Nk

Now, we also know that for an ideal gas, U only depends on temperature (not pressure or volume), so dU/dT = (dU/dT)v. Similarly, H only depends on temperature and pressure (not volume), so dH/dT = (dH/dT)p.

Therefore, we can rewrite the equation as:

(dH/dT)p = (dU/dT)v + Nk

And using the definition of heat capacity at constant pressure (Cp) and constant volume (Cv), we have:

Cp = (dH/dT)p      and       Cv = (dU/dT)v

So we can write:

Cp = Cv + Nk

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What is the total amount of power delivered to the heater when the heater is connected for 240-volt operation when each heater is 300 watts?

Answers

The total amount of power delivered to the heater when each heater is 300 watts and the heater is connected for 240-volt operation is 300 watts.

To calculate the total amount of power delivered to the heater when each heater is 300 watts and the heater is connected for 240-volt operation, we can use the formula:

P = V * I

where P is power, V is voltage, and I is current.

For a 240-volt operation, we can calculate the current using Ohm's law:

V = I * R

where R is the resistance of the heater.

R can be calculated using the formula:

[tex]R = V^2 / P[/tex]

where P is the power of the heater (in watts).

Substituting the given values, we get:

R = [tex]240^2 / 300[/tex] = 192 Ω

Now, we can calculate the current:

I = V / R = 240 / 192 = 1.25 A

Finally, we can calculate the total power delivered to the heater:

P = V * I = 240 * 1.25 = 300 watts

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A football player is running down the field with a momentum of 0. 567 kg*m/s. The player encounters a force that causes him to stop in 1. 4 seconds.


What is the final momentum of the player?


kg*m/s



What is the change in momentum of the player?


kg*m/s



What is the impulse?


N*s



What is magnitude of the force that brings the player to a stop in this amount of time?

Answers

The final momentum of the player is 0 kgm/s, the change in momentum is -0.567 kgm/s, the impulse is -0.567 N*s, and the magnitude of the force that brings the player to a stop in 1.4 seconds is 0.405 N.

We can use the equation for impulse, which is given by:

[tex]impulse = force * time[/tex]

We can also use the equation for change in momentum, which is given by:

change in momentum = final momentum - initial momentum

First, let's find the final momentum of the player. We know that the initial momentum is 0.567 kgm/s, and the player comes to a stop, so the final momentum is 0 kgm/s.

Therefore, the change in momentum is:

change in momentum = final momentum - initial momentum = 0 - 0.567 = -0.567 kg*m/s

The negative sign indicates that the momentum has decreased.

Now, let's find the impulse. We know that the time it takes for the player to come to a stop is 1.4 seconds, so we can plug that into the equation for impulse:

impulse = force x time

-0.567 kg*m/s = force x 1.4 s

Solving for force, we get:

force = -0.567 kg*m/s ÷ 1.4 s = -0.405 N

The negative sign indicates that the force is acting in the opposite direction of the player's momentum.

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Activity 3: musical instruments of mindanao ((moro/islamic musie))
write the different musical solo instruments and musical ensembles in mindanao instrumental music.
bamboo ensemble
kulintang ensemble
membranophones:
1.
2.
1.
2.
3.
metallophones:
1.
2.
3.
4.
5.
string/chordophones
1.
solo instruments
aerophones
1. ​

Answers

In the Moro/Islamic music of Mindanao, there are several solo instruments and ensembles used for musical performances.

Here are some of them:

Musical Ensembles:

1. Bamboo Ensemble - a group of musicians playing bamboo instruments such as flutes, buzzers, and percussion instruments.

2. Kulintang Ensemble - a group of musicians playing a set of small, horizontally laid gongs of different sizes and pitches, accompanied by drums, cymbals, and other percussion instruments.

Membranophones:

1. Dabakan - a large, single-headed cylindrical drum played with both hands.

2. Gandingan - a single-headed, cylindrical drum played with a single stick.

3. Agung - a large, double-headed gong played with a stick.

Metallophones:

1. Kulintang - a set of small, horizontally laid gongs of different sizes and pitches.

2. Gandingan - a set of four large, vertically hung gongs.

3. Agung - a set of two large, double-headed gongs.

4. Sarunay - a small, vertically hung gong.

5. Babandil - a small, single-headed gong.

String/Chordophones:

1. Kudyapi - a two-stringed lute played with a plectrum.

Solo Instruments:

1. Suling - a bamboo flute played solo or in an ensemble.

2. Kulintang a Tiniok - a small, handheld gong played solo or in an ensemble.

Aerophones:

1. Kutiyapi - a two-stringed lute with a bamboo tube resonator and played solo.

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Four identical particles of mass 0. 913 kg each are placed at the vertices of a 4. 30 m x 4. 30 m square and held there by four massless rods, which form the sides of the square. What is the rotational inertia of this rigid body about an axis that:



a. Passes through the midpoints of opposite sides and lies in the plane of the square


b passes through the midpoint of one of the sides and is perpendicular to the plane of the square


c. Lies in the plane of the square and passes through two diagonally opposite particles

Answers

To calculate the rotational inertia of this rigid body, we need to use the formula I = Σmr², where I is the rotational inertia, Σm is the sum of the masses of all the particles, and r is the distance of each particle from the axis of rotation.

For part b, the axis of rotation passes through the midpoint of one of the sides and is perpendicular to the plane of the square. This means that the distance of each particle from the axis of rotation is the same, which is the half of the diagonal of the square, given by d/2 = 2.415 m. Thus, the rotational inertia can be calculated as I = 4m(2.415)² = 44.2 kg·m².

For part c, the axis of rotation lies in the plane of the square and passes through two diagonally opposite particles. This means that we need to find the distance of the other two particles from the axis of rotation, which can be calculated using the Pythagorean theorem. The diagonal of the square is given by d = 4.30 m, so the distance of each particle from the axis of rotation is √((d/2)² + (d/2)²) = 3.04 m. Thus, the rotational inertia can be calculated as I = 2m(3.04)² + 2m(2.415)² = 76.8 kg·m².

In summary, the rotational inertia of this rigid body depends on the distribution of the particles and the axis of rotation. For a uniform distribution of particles, the rotational inertia can be calculated using the formula I = Σmr². For part b, where the axis of rotation passes through the midpoint of one of the sides and is perpendicular to the plane of the square, the rotational inertia is 44.2 kg·m².

For part c, where the axis of rotation lies in the plane of the square and passes through two diagonally opposite particles, the rotational inertia is 76.8 kg·m².

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3. A slinky has a spring constant of 160 N/m. How much work is done on the slinky


to stretch it 0. 50 meters horizontally across a table?

Answers

The work done on the slinky to stretch it 0.50 meters horizontally across a table is 20 J.

The work done on a spring is given by the equation W = (1/2)[tex]kx^{2}[/tex], where W is the work done, k is the spring constant, and x is the distance stretched. Substituting the given values, we get: W = (1/2)(160 N/m)[tex](0.50m)^{2}[/tex], W = 20 J

Therefore, the work done on the slinky to stretch it 0.50 meters horizontally across a table is 20 J.

The work done is equal to the energy stored in the spring as potential energy due to its deformation.

When the slinky is stretched, the work done on it is stored as potential energy in the spring, which can be converted back to work when the spring is released.

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Write an equation for the strength of the electrostatic force for two charges that are separated by 10 meters. Use the Gizmo to check your equation

Answers

F = k * ([tex]q_1[/tex][tex]q_2[/tex])/[tex]r^{2}[/tex], where F is the strength of the electrostatic force, k is Coulomb's constant (9X[tex]10^{9}[/tex] N*[tex]m^{2}[/tex]/[tex]C^{2}[/tex]), [tex]q_1[/tex] and [tex]q_2[/tex] are the charges, and r is the distance between the charges in meters.

What is Magnetic Force?

Magnetic force is a fundamental force of nature that is exerted between moving charged particles, such as electrons or between a magnetic field and a moving charge. This force can cause a magnetic material to experience a force of attraction or repulsion depending on its orientation with respect to the magnetic field.

Using the Gizmo to check, we can input two charges and a distance of 10 meters to calculate the electrostatic force between them. The result should match the output of the equation F = k * ([tex]q_1[/tex]*[tex]q_2[/tex])/[tex]r^{2}[/tex].

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How many criteria determine if a naturally occurring object is "magnetic"?

Answers

There are three main criteria that determine if a naturally occurring object is "magnetic"

1. The object must be ferromagnetic (usually iron, nickel, or cobalt), meaning it contains atoms with unpaired electrons that can align themselves with an external magnetic field.

2. The magnetic moments of these atoms must be strong enough to cause the material to be magnetic.

3. The material must have a net magnetic moment, meaning that the magnetic moments of the individual atoms are aligned in the same direction.

While these three criteria are the primary factors that determine whether a naturally occurring object is magnetic, other factors can also influence its magnetism. For example, the temperature and pressure of the material can affect the strength of its magnetic interactions, and the presence of impurities or defects can alter the way its magnetic moments interact.

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A uniform, 6 m long and 600-N beam, rests on two supports, as shown. The force exerted onthe b eam by the right support B is closest to:

Answers

The force exerted on the beam by the right support B is closest to: (B).320N is correct option.

If the beam is at rest, the sum of the forces and the sum of the torques acting on it must be equal to zero.

Assuming the beam is supported at its two ends, the sum of the forces acting on the beam will be equal to the weight of the beam, which is given by:

W = m * g

W = (600 N) / (9.81 m/s²) ≈ 61.14 kg

Each support will exert an equal and opposite force on the beam, which we can denote as F. Therefore, the sum of the forces acting on the beam will be:

ΣF = 2F - W = 0

Solving for F, we get:

F = W/2

F ≈ 30.57 kg ≈ 300 N

Therefore, the force exerted on the beam by the right support B is closest to 300 N.

The complete question is,

A uniform 400-N beam 6 m long rests on two supports. Support Ais im from the left end of the beam Support B is at the right end of the beam. What is the value in N. of support force exerted on the beam by the left support A? 400 0 320 240 O 160

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the sun is a star in the milky way galaxy. when viewed from the side, the galaxy looks like a disk that is approximately 100,000 light- years in diameter (a light-year is the distance light travels in one year) and about 1000 light-years thick (figure p25.8). what is the diameter and thickness of the milky way in meters? in kilometers? in miles?

Answers

Answer:

1,000,000,000,000,000,000 km (about 100,000 light years or about 30 kpc)

Explanation:

What advice would you give to the company that wants to build a bridge in south america? make sure to include whether there is anything the company should change about its design and materials. give specific examples. your answer should include at least five complete sentences. (this is about earthquakes) will make brainlest and 20 points

Answers

For a company looking to build a bridge in South America, it is crucial to consider the region's seismic activity.

To ensure the bridge's safety and durability, I recommend using earthquake-resistant design features, such as base isolation or energy dissipation devices.

It's also important to choose materials with high ductility, like steel or reinforced concrete, which can better withstand the stress from earthquakes.

Additionally, the company should collaborate with local experts and authorities to understand the seismic history and geological conditions of the specific location. Lastly, it is essential to conduct regular maintenance and inspections to ensure the bridge's structural integrity over time.

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Read the following passage and find the two errors. Then, choose the answer that corrects the errors. pH is a measure of the concentration of OH− ions in a solution of an acid or base. The pH scale plots the concentration of solutions in a range from 0–16. (2 points) Group of answer choices pH is a measure of the concentration of OH− ions in a solution of water. The pH scale plots the concentration of solutions in a range from 0–12. pH is a measure of the concentration of H+ ions in a solution of an acid or base. The basic scale plots the concentration of solutions in a range from 0–16. pH is a measure of the concentration of OH− ions in a solution of an acid or base. The acid scale plots the concentration of solutions in a range from 0–16. pH is a measure of the concentration of H+ ions in a solution of an acid or base. The pH plots the concentration of solutions in a range from 0–14.

Answers

The two errors in the passage are:

pH is a measure of the concentration of OH− ions in a solution of an acid or base. The pH scale plots the concentration of solutions in a range from 0–16.

The answer that correct both errors is:

pH is a measure of the concentration of H+ ions in a solution of an acid or base. The pH plots the concentration of solutions in a range from 0–14.

A solution's acidity or basicity is determined using the pH scale. A pH of 0-6.9 is considered acidic, a pH of 7 is neutral, and a pH of 7.1-14 is considered basic. The pH scale is logarithmic, which means that each change in pH reflects a tenfold difference in acidity or basicity.

The concentration of hydrogen ions (H+) in a solution determines the pH of the solution. A base is a chemical that reduces the concentration of H+ ions in a solution, whereas an acid raises the concentration of H+ ions in a solution.

Therefore, The  correct answer choice is:

" pH is a measure of the concentration of H+ ions in a solution of an acid or base. The pH plots the concentration of solutions in a range from 0–14."

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A Helmholtz resonator is a simple cylindrical cavity that suppresses most frequencies and strongly amplifies a few resonant frequencies.

Answers

A Helmholtz resonator is essentially an acoustic device that consists of a cavity (usually a cylinder or sphere) with a small neck or opening.

The cavity is typically filled with air, and when sound waves enter the resonator, they cause the air inside the cavity to vibrate at specific resonant frequencies. These frequencies are determined by the size and shape of the cavity, as well as the size and shape of the neck or opening.

One of the key features of a Helmholtz resonator is its ability to suppress most frequencies while strongly amplifying a few specific resonant frequencies.

This is because the resonator acts as a filter, allowing only certain frequencies to pass through the neck or opening and enter the cavity. Any other frequencies are reflected or absorbed by the resonator, resulting in a reduction in overall sound levels.

Helmholtz resonators are commonly used in a variety of applications, such as in acoustic engineering to reduce noise levels in buildings or vehicles, in musical instruments to enhance specific frequencies, and in scientific experiments to study the properties of sound waves.

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Based on the data table, find the acceleration and then predict the velocity at the time 3. 5 seconds.


A)


The acceleration is 5 m/s/s and the velocity at a time of 3. 5 seconds will be


35 m/s.


B)


The acceleration is 10 m/s/s and the velocity at a time of 3. 5 seconds will


be 35 m/s.


The acceleration is 10 m/s/s and the velocity at a time of 3. 5 seconds will


be 70 m/s


The acceleration is 5 m/5/5 and the velocity at a time of 3. 5 seconds will be


17. 5 m/s

Answers

The acceleration is 5 m/s/s and the velocity at a time of 3.5 seconds will be 17.5 m/s. Option D is correct.

To find the acceleration, we can use the formula a = (vf - vi) / t, where vf is the final velocity, vi is the initial velocity, and t is the time interval. From the given data table, we can see that the initial velocity is 0 m/s and the final velocity at 4 seconds is 20 m/s. Therefore, the acceleration is (20 m/s - 0 m/s) / 4 s = 5 m/s/s.

To predict the velocity at 3.5 seconds, we can use the formula vf = vi + at, where vi is the initial velocity, a is the acceleration, and t is the time interval. Substituting the given values, we get vf = 0 m/s + 5 m/s/s x 3.5 s = 17.5 m/s. Therefore, the predicted velocity at 3.5 seconds is 17.5 m/s. Option D is correct.

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2. 2 "However, we need to examine our environment, and ask problematic questions such as,


"whose law?" Obviously, it's the law of the dominant class in that society (Study Guide,


p. 7)


Which class does the South African law, including the constitution, serve? Explain fully. (3)

Answers

The law in South Africa, including the constitution, serves the interests of the dominant class, which historically has been the white minority. During apartheid, the law was used to enforce segregation and discrimination against the majority black population.

While the constitution and laws have since been revised to promote equality and protect human rights, there are still systemic issues that continue to serve the interests of the wealthy and powerful.

For example, land ownership remains highly concentrated in the hands of a few, and the legal system can be slow and expensive, making it difficult for marginalized communities to access justice. Additionally, the legacy of apartheid-era policies and practices continues to impact access to education, healthcare, and economic opportunities for many black South Africans.

Overall, while progress has been made in addressing inequality and promoting social justice, the law in South Africa still reflects the interests of the dominant class and requires continued efforts to ensure that it serves the needs of all citizens.

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Answer all of these for me, please!! :)
1) if a circuit has 300 ohms of resistance with a 15 v power supply, what current would it draw in amperes?
2) what is the resistance of a circuit that draws 0.02 a with a 300 v power supply?
3)if the resistance of a circuit with 12 a is doubled without changing the voltage, what will be the new current in a?
4)if the resistance of a circuit with 12 a is halved without changing the voltage, what will be the new current in a?

Answers

The current would be: I = V/R = 15 V / 300 Ω = 0.05 A. The resistance would be: R = V/I = 300 V / 0.02 A = 15,000 Ω. The new current would be 6 A. The new current would be 24 A.

1) Using Ohm's law, we can determine the current drawn by the circuit by dividing the voltage by the resistance. So, the current would be: I = V/R = 15 V / 300 Ω = 0.05 A.

2) Again, using Ohm's law, we can determine the resistance of the circuit by dividing the voltage by the current. So, the resistance would be: R = V/I = 300 V / 0.02 A = 15,000 Ω.

3) According to Ohm's law, if the resistance of a circuit is doubled without changing the voltage, the current will be halved. So, the new current would be 6 A.

4) Similarly, if the resistance of a circuit is halved without changing the voltage, the current will be doubled. So, the new current would be 24 A.

In summary, Ohm's law relates the current, voltage, and resistance in an electric circuit. By knowing any two of these values, we can calculate the third value using the formula I = V/R.

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A Calculate the young Young's modulus in the


calculate the Young’s modulus cantilever depression method. The length is Im.


which is suspended with a load of 150gm. The


depression is found to be 4cm. The thickness of the


beam is 5mm and breadth is 3cm (take gravity =9. 8)

Answers

Young's modulus using the cantilever depression method, we need to use the formula:

Y = (4FL^3) / (3bh^3d)

where Y is the Young's modulus, F is the force applied, L is the length of the cantilever, b is the breadth, h is the thickness, and d is the depression.

In this case, the length of the cantilever is given as 1m or 100cm, and the load applied is 150gm or 0.15kg. The depression is given as 4cm, and the breadth and thickness of the beam are given as 3cm and 5mm, respectively.

We need to convert the thickness to cm, which gives us 0.5cm.

Substituting these values in the formula, we get:

Y = (4 x 0.15 x 100^3) / (3 x 3 x 0.5^3 x 4)

Simplifying this, we get:

Y = 4.5 x 10^5 N/cm^2

Therefore, the Young's modulus of the beam is 4.5 x 10^5 N/cm^2.

It's important to note that when using the cantilever depression method, it's crucial to ensure that the beam is loaded within its elastic limit, and the deflection or depression is small enough to be considered as a linear relationship between the force applied and the deflection.

Additionally, it's important to take into account any sources of error, such as friction or air resistance, that may affect the accuracy of the results.

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what is the highest temperature allowed for cold holding fresh salsa?

Answers

The highest temperature allowed for cold holding fresh salsa is 41°F (5°C) or below.

What is the highest temperature?

The U.S. Food and Drug Administration (FDA) Food Code stipulates that potentially hazardous foods, such as fresh salsa, must be stored at or below 41°F (5°C) in order to prevent the growth of harmful microorganisms.

It's important to regularly monitor the salsa's temperature and discard any that has been held over this degree for longer than four hours in order to ensure food safety.

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Particles q1, 92, and q3 are in a straight line.


Particles q1 = -1. 60 x 10-19 C, 92 = +1. 60 x 10-19 C,


and q3 = -1. 60 x 10-19 C. Particles 91 and q2 are


separated by 0. 001 m. Particles q2 and q3 are


separated by 0. 001 m. What is the net force on 92?


Remember: Negative forces (-F) will point Left


Positive forces (+F) will point Right


-1. 60 x 10-19 C


+1. 60 x 10-19


-1. 60 x 10-19 C


91


+ 92


93


0. 001 m


0. 001 m

Answers

The net force on particle 92 is zero, which means it is in equilibrium and not accelerating.

The electric force between charged particles can be calculated using Coulomb's law, which states that the force is proportional to the product of the charges and inversely proportional to the square of the distance between them.

To find the net force on particle 92, we need to calculate the electric forces acting on it due to the other particles in the line. The force on particle 92 due to particle 91 can be calculated using Coulomb's law:

F_92,1 = kq_1q_2 / r²

            = (9x10⁹ Nm²/C²) * (-1.60x10⁻¹⁹ C) * (1.60x10⁻¹⁹ C) / (0.001 m)²

            = -2.30x10⁻¹⁴ N

The force on particle 92 due to particle 93 can also be calculated using Coulomb's law:

F_92,3 = kq_2q_3 / r²

            = (9x10⁹ Nm²/C²) * (-1.60x10⁻¹⁹ C) * (-1.60x10⁻¹⁹ C) / (0.001 m)²

            = 2.30x10⁻¹⁴ N

Since the forces due to particles 91 and 93 are equal in magnitude but opposite in direction, they cancel out each other. As a result, the net force acting on particle 92 is zero.

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HYSICS What mass of lead has the volume as 1 600 kg of alcohol? the values of densities given in table2.7)​

Answers

Explanation:

Solution:

Density of alcohol = 600kg/m³

In g/cm³ = 600/1000

= 0.60 g/cm³

Write an expression for the speed of the heavier mass as a function of their separation distance, r, which is measured cm to cm and decreases over time as the masses move toward each other due to their gravitational attraction.

Answers

The speed of the heavier mass as a function of their separation distance, r, can be expressed using the conservation of energy principle.

As the masses move toward each other due to gravitational attraction, their potential energy decreases and their kinetic energy increases, such that the total energy remains constant.

Therefore, we can write: 1/2 * m1 * [tex]v^{2}[/tex] = G * m1 * m2 / r

where m1 is the mass of the heavier object, m2 is the mass of the lighter object, v is the velocity of m1, r is the separation distance between the two objects, and G is the gravitational constant.

Solving for v, we get:

v = sqrt(2 * G * m2 / r)

This expression shows that as the separation distance r decreases, the velocity v of the heavier object increases due to the increasing gravitational attraction between the two masses.

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An object of mass 6.10 kg has an acceleration a⃗ =(1.31 m/s2 )x^+(-0.673 m/s2 )y^.

A)Three forces act on this object: F⃗ 1 , F⃗ 2 ,and F⃗ 3 .Given that F⃗ 1= (3.06 N ) x^ and F⃗ 2= (-1.62 N ) x^+ (1.73 N ) y^ , find F⃗ 3 .

Express your answers using three significant figures separated by a comma.

Answers

Expressing the answer in three significant figures separated by a comma, we get: F⃗ _3 = (-7.99, -6.00) N = (-10.00 N, -38.88°) using newton second law.

Newton second law calculation.

To find the third force, we can use Newton's second law, which states that the net force on an object is equal to its mass times its acceleration:

F⃗ _net = m⃗ a⃗

where F⃗ _net is the vector sum of all the forces acting on the object.

We can start by finding the vector sum of F⃗ _1 and F⃗ _2:

F⃗ _1 + F⃗ _2 = (3.06 N)x^ + (-1.62 N)x^ + (1.73 N)y^

= (1.44 N)x^ + (1.73 N)y^

Now, we can find the net force by subtracting the vector sum of F⃗ _1 and F⃗ _2 from the mass times acceleration:

F⃗ _3 = m⃗ a⃗ - (F⃗ _1 + F⃗ _2 )

= (6.10 kg)(1.31 m/s^2 x^ - 0.673 m/s^2 y^) - (1.44 N)x^ - (1.73 N)y^

= (7.99 N)x^ - (6.00 N)y^

Therefore, the third force F⃗ _3 has a magnitude of 10.00 N and is directed at an angle of 38.88 degrees below the positive x-axis:

|F⃗ _3| = √[(7.99 N)^2 + (-6.00 N)^2] = 10.00 N

θ = tan⁻¹(-6.00 N / 7.99 N) = -38.88° (measured below the positive x-axis)

Expressing the answer in three significant figures separated by a comma, we get:

F⃗ _3 = (-7.99, -6.00) N = (-10.00 N, -38.88°)

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Assuming the precision, P, with which this electromagnetic radiation can shape the cornea is inversely proportional to wavelength (the shorter the wavelength, the higher the precision), how much more precise can this ultraviolet light be than the shortest wavelength of visible light, which is 380 nm

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From the relation between precision and wavelength, the precision of UV light is 90.95 % times the precision of visible light.

Given:

Wavelength, λ = 380 nm

Laser wavelength, λ₁ = 199 nm

The relationship between precision and wavelength is:

P ∝ 1/λ

Precision = (P - P₁)÷P₁ ×100

Precision(UV) = (λ₁ ÷ λ) - 1 ×100

Precision(UV) = (380 ÷ 199 - 1) ×100

Precision(UV) = 90.95 %

Hence, the precision of UV light is 90.95 % the precision of visible light.

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discuss the key characteristics of the plot. consider the points when potential energy u is maximum, u is minimum, kinetic energy k is maximum, k is minimum and when u and k are the same value. what is the significance of these points?

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In terms of physics, Potential energy (u) refers to stored energy that has the potential to be converted into kinetic energy (k), which is the energy of motion. In a story, u and k can represent the emotional energy of the characters and the events that unfold.

When u is at its maximum, it indicates that tension or conflict is building, and the story is reaching a critical point. When u is at its minimum, it suggests that the characters or situation have reached a state of equilibrium.

When k is at its maximum, it means that the story is reaching a peak in action or intensity. Conversely, when k is at its minimum, the story may be transitioning between scenes or slowing down.

When u and k are at the same value, it suggests a balance between the potential and kinetic energy, and the story may be reaching a climax or resolution.

These points are significant as they highlight important moments in the story and indicate shifts in the narrative or emotional energy of the characters. Understanding these key characteristics of the plot can help readers to engage with the story and appreciate the author's use of tension and pacing to create a compelling narrative.

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A force that exists between any two objects that have mass

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A force that exists between any two objects that have mass: gravity. The correct option is C.

Gravity is a natural force that attracts two objects with mass towards each other. It is the reason why objects fall to the ground when dropped, and it is also responsible for keeping planets and other celestial bodies in their orbits.

The other terms, motion (A), velocity (B), and friction (D), are related to the movement and interaction of objects, but they are not the specific force that exists between objects with mass. Remember, gravity is the force that exists between any two objects that have mass. The correct option is C.

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Complete question:

A force that exists between any two objects that have mass:

A. motion

B. velocity

C. gravity

D. friction

lighting flashes and you hear a thunder clap 4 seconds later. the velocity of sound is 340 m/s. how far away did the lighting strike

Answers

Answer:

The lightning struck 1,360 meters away

Explanation:

1. List knowns

Speed of sound = 340 m/s

Time = 4 s

2. Find formula that uses above knowns

Speed = Distance / Time

Distance = Time x Speed

3. Substitute

Distance = 4 s x 340 m/s

Distance = 1360 meters

Leilani Hendricks
4/4/23
Test Name: T-Science-Gr5-T5-PBT (2022-2023)
Test ID: 2710825
1. Sophia rides her bike to and from school. Sophia's bike has a special tape that reflects energy from
the sun to make it easier for cars to see her. She also uses a bell to let other bikers know if she is going
to move pass them. Which of the following form of energy does Sophia not use when biking?
A. mechanical energy
B. sound energy
C. light energy
D. electrical energy

Answers

D. Electrical energy. Sophia does not use electrical energy when biking. The special tape on her bike reflects light energy from the sun to make it easier for cars to see her.

What is Light Energy?

Light energy is a form of electromagnetic radiation that travels through space as waves, and can be perceived by the human eye as colors of the visible spectrum. Light energy can also exist as particles called photons. Light energy is able to travel through transparent or translucent substances, such as air, water, and glass. Light energy plays a crucial role in many natural processes, such as photosynthesis, vision, and the heating of the Earth's atmosphere. It is also widely used by humans in applications such as lighting, telecommunications, and photography.

She uses a bell, which creates sound energy, to let other bikers know if she is going to move past them. The mechanical energy is used by Sophia to pedal the bike and move it forward.

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calculate the wavelengths of the components of the first line of the lyman series, taking the fine structure of the 2p level into account.

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The wavelengths of the components of the first line of the Lyman series, taking the fine structure of the 2p level into account, are 121.4 nm and 121.2 nm for j = 1/2 and j = 3/2, respectively.

The Lyman series is a series of spectral lines in the hydrogen atom's emission spectrum that corresponds to transitions from higher energy levels to the ground state. The first line of the Lyman series corresponds to a transition from the 2p energy level to the 1s energy level.

To take the fine structure of the 2p level into account, we need to use the formula for the energy of a hydrogen atom with fine structure:

[tex]E= -13.6 eV*\frac{1}{n^{2} } *[1+a^{2} * \frac{(\frac{Z}{n}) ^{4}}{(n-j-\frac{1}{2})^{2} } ][/tex]

where n is the principal quantum number, Z is the atomic number (1 for hydrogen), j is the total angular momentum quantum number of the electron, and α is the fine structure constant.

For the 2p energy level, j can be either 1/2 or 3/2, so we need to calculate the wavelengths for both possibilities. Using the formula for the energy of the 2p level and the energy of the 1s level (-13.6 eV), we can calculate the wavelengths of the first line of the Lyman series with fine structure for each case:

For j = 1/2: λ = 121.6 nm * [1 - (1/9) * α²] = 121.6 nm * 0.9988 = 121.4 nm

For j = 3/2: λ = 121.6 nm * [1 - (4/9) * α²] = 121.6 nm * 0.9972 = 121.2 nm

Taking the fine structure of the 2p level into consideration, the wavelengths of the components of the first line of the Lyman series are 121.4 nm and 121.2 nm for j = 1/2 and j = 3/2, respectively.

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A person climbs to the top of the tallest mountain in South America. Since they are farther away from the center of the Earth, how does their weight compare to what it was at the base of the mountain?

Answers

Answer:

A person's weight will be slightly less at the top of a mountain than at the base. This is because the force of gravity is slightly weaker at higher altitudes. The force of gravity is directly proportional to the mass of the Earth and inversely proportional to the square of the distance between the object and the center of the Earth. Since the person is farther away from the center of the Earth at the top of the mountain, the force of gravity is slightly weaker. This means that the person will weigh slightly less.

The amount of weight loss is very small, and it is not something that most people would notice. However, it is a real effect, and it can be measured. In fact, scientists have used this effect to measure the mass of the Earth.

during the collision between a bug and a truck on the freeway, the truck exerts a much larger force on the bug than the one that the bug exerts on the truck. true or false

Answers

The statement "during the collision between a bug and a truck on the freeway, the truck exerts a much larger force on the bug than the one that the bug exerts on the truck" is actually false.

According to Newton's Third Law of Motion, every action has an equal and opposite reaction. In this case, when the bug and the truck collide, both of them exert forces on each other that are equal in magnitude but opposite in direction. While the force has a greater impact on the bug due to its smaller mass, the forces exerted by both the bug and the truck are equal.

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