A current-carrying wire with many loops is called a magnetic field. A wire coil. A solenoid. A bar magnet.

An object of mass m attached to a spring of force constant k oscillates with simple harmonic motion. The system's potential energy when kinetic energy of (3/4) E is (1/8) k A².

Mechanical energy is the sum of potential energy and kinetic energy.

Total mechanical energy = P.E max = K.E max

Total mechanical energy = K.E +P.E

Given is the kinetic energy is (3/4)E.

E= (3/4)E + P.E

P.E =  (1/4) E

Maximum potential  energy =E = (1/2) k A²

Here. A is the maximum displacement and k is the spring constant.

The potential energy at kinetic energy of (3/4) E is

P.E = (1/4)E = (1/8) k A²

Therefore, the system's potential energy when kinetic energy of (3/4) E is (1/8) k A².

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Explanation:

Efficiency is a way of describing the amount of useful ​output​ a process or machine can generate as a percentage of the ​input​ required to make it go. In other words, it compares how much energy is used to do work versus how much is lost or wasted to the environment. The more efficient the machine, the less energy wasted.

For example, if a heat engine is able to turn 75 percent of the fuel it receives into motion, while 25 percent is lost as heat in the process, it would be 75 percent efficient. Out of the original 100 percent of the fuel, 75 percent was output as useful work.  

the equation:

energy efficiency =useful output energy/total input energy

Answer:

c = λ f

λ = c / f

λ = 3E8 / 1 = 3.00E8 m wavelength of 1 hertz

λ = 3E8 / 1E5 = 3000 m     wavelength of 100,000 hertz

Answer:

1. C: 31/14 Si becomes 31/15 because a nuetron

2. A: 238  92U because the very long half-life means a very small rate of decay

3. D: Charge conservation is not satisfied

4. B: of the four nuclear decay processes only the α-decay changes the baryon number and does so in increments of four

Explanation:

I just took the quick check. Enjoy the answers I did not get to have

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If Gaia's photometric instrument broke down. Scientists will not able to measure the electromagnetic radiation.

Electromagnetic radiation is a type of energy that is transmitted in incident photons as both magnetic and electric waves.

Electromagnetic radiation has a spectrum with varying wavelengths and frequencies, which gives it different properties.

A device that detects the intensity of electromagnetic radiation is called as the photometric instrument.

Hence,scientists will not able to measure the electromagnetic radiation.

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Answer:

They have 8 electrons in their outermost shell(except for Helium)

Explanation:

The noble gases are unreactive and stable because they have completely filled orbitals and have 8 electrons in their outermost shell.

Therefore

They have 8 electrons in their outermost shell(except for Helium)

The magnitude of the radial acceleration of pendulum is 25 rad/s²

Acceleration can be defined as the rate change of velocity with time.

acceleration a = (Δv) / (Δt)

The centripetal acceleration or radial acceleration for the pendulum is given by

a = v²/r

Given is the radius = cord length of pendulum =1m and the velocity v = 5m/s, then the acceleration will be

a = (5)² /1

a = 25 rad/s²

Thus, the radial acceleration is 25 rad/s²

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Answer:

45 times higher

Explanation:

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Answer:

The background extinction rate is the average rate at which species become extinct over geological time, usually estimated in millions of years. The actual extinction rate refers to the rate at which species are currently going extinct.

Based on scientific studies, the actual extinction rate over the past 400 years is significantly higher than the background extinction rate.

The correct answer is A. 45 times higher.

Explanation:

The new force between the charges when the distance become 2d will be  F'=4F

When two charged particles are separated by the distance d then the force of attraction or repultion acts on the charged particle depending upon the nature of the charge whether it is positive or negative.

The formula for the electrostatic force is given by

[tex]F=\dfrac{kq_1q_2}{d^2}[/tex]

Now if the value of d becomes 2d then the formula will become:

[tex]F'=\dfrac{kq_1q_2}{(2d)^2}=\dfrac{kq_1q_2}{4d}[/tex]

[tex]\dfrac{F'}{F}=\dfrac{1}{4}[/tex]

[tex]F=4F'[/tex]

Hence the new force between the charges when the distance become 2d will be  F'=4F

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Answer:

Speed = distance / time

= 1500 /2

= 750 km/h

A current-carrying wire of length 50 cm is positioned perpendicular to a uniform magnetic field. The magnetic field strength is 0.6 Tesla.

The magnetic field is the region of space where an object experiences a magnetic force as it enters the field.

Given is the wire of length 50 cm = 0.5 m and the current is 10.0 A. There is a resultant force of 3.0 N on the wire due to the interaction of the current and field.

The relation between magnetic field strength and current is

F = ILB

Substituting 50 for L, 10 for I and 3 for F, we get the magnetic field strength B.

3 = 10 × 0.5 × B

B= 0.6 Tesla

Therefore, the magnetic field strength is 0.6 Tesla.

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Answer:

0.85 A

Explanation:

the effective current is 0.85 A

The mass of calcium phosphate the reaction can produce is 6.076 grams.

Mass is a numerical measure of inertia, which is a basic feature of all matter. It is, in effect, a body of matter's resistance to a change in speed or position caused by the application of a force.

In the International System of Units (SI), the kilogram is the unit of mass.

Given;

Mass of calcium nitrate (Ca(NO₃)₂) = 96.1 g

Mass of calcium phosphate=?

The chemical equation is found as;

3Ca(NO₃)₂ + 2Na₃PO₄ → 6NaNO₃ + Ca₃(PO4)₂

3 moles of Ca(NO₃)₂ produces 1 mole of Ca₃(PO4)molar mass of calcium phosphate is 164 g/mol

Moles are found as the ratio of the mass of the compound and its molar mass. Moles of Ca(NO₃)₂ is n.

n = 96.1/164 = 0.5859 moles

Moles of Ca3(PO4)2 produced ;

N=0.0589 ×(1/3) = 0.0196 moles

The molar mass of calcium phosphate is 310 g/mol and the mass of calcium phosphate produced will be;

M=0.0196×310

M = 6.076 g

Hence,the mass of calcium phosphate the reaction can produce is 6.076 grams.

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Answer:

b

Explanation:

The outlets in your home provide alternating current. An example of a direct source would be a battery.

The cause of refraction as waves move from one medium to another is : Change in speed of Light

Refraction can be defined as the change in direction of a wave as it passes from one medium to another medium.

Refraction is observed in many wave form but it is more prominent and visible when it comes to light wave.

In conclusion, The cause of refraction as waves move from one medium to another is : Change in speed of Light

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The color towards which these spectral lines shifts when visible light from messier 81 galaxy is observed on planet Earth is a blue shift or violet.

A redshift can be defined as a displacement (shift) of the spectral lines of astronomical objects such as messier 81 galaxy, toward longer wavelengths as a result of the Doppler effect.

In this scenario, we can infer and logically conclude that the color towards which these spectral lines would shift when visible light from the messier 81 galaxy is observed on planet Earth is a blue shift or violet.

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Answer:

yes bc we are wasting gas and this will help use less

Explanation:

Answer:

Graphically the path of an object will be linear; it looks like a straight line when it is in uniform motion.

Answer:

C

Explanation:

There is a decrease in temperature and daylight and plants produce less food.

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Answer:

60 000 J

Explanation:

The PE will be converted to KE entirely (if the lowest point is ground level)

Answer:

The short answer is that it takes sunlight an average of 8 minutes and 20 seconds to travel from the Sun to the Earth.

Explanation:

how long does it take sunlight to reach Earth? This sounds like a strange question, but think about it. Sunlight travels at the speed of light. Photons emitted from the surface of the Sun need to travel across the vacuum of space to reach our eyes. If the Sun suddenly disappeared from the Universe (not that this could actually happen, don't panic), it would take a little more than 8 minutes before you realized it was time to put on a sweater.

Answer:

Like the three kanji characters that make up the word, kabuki consists of ka (singing), bu (dancing) and ki (skill). In addition to these three components, kabuki is characterized by unique stage sets such as a revolving platform that allows for nearly instant set changes and a runway that stretches into the audience.

Answer:

to the east i would say as i have tryed looking it up and carnt fimd the answer so i would saythe east or the north

Explanation:

you should choose as i dont no as it is a toss between those two