Which object represents a negatively charged particle? which object represents a positively charged molecule? which object represents an uncharged molecule? which object will not move when in an electric field?

Answer:

B. Homogenous mixture

Explanation:

........

The formula for the fundamental frequency for an open tube at one end is : F = nV/4L the integer n = 3 which describe the frequency 450 hertz and length of tube L = 0.6m approximately

Frequency of the object is defined as the number of cycles attend in a second .

Given that a tube is open only at one end. And a certain harmonic produced by the tube has a frequency of 450 Hz. The next higher harmonic has a frequency of 750 Hz. The formula for the fundamental frequency for an open tube at one end is :

[tex]F = \dfrac{V}{4L}[/tex]

That is, 1st harmonic

[tex]\dfrac{V}{4L} = F[/tex]

2nd harmonic =

[tex]\dfrac{3V}{4L} = 3F[/tex]

3rd harmonic =

[tex]\dfrac{5V}{4L} = 5F[/tex]

The general formula can therefore be [tex]F =\dfrac{ nV}{4L}[/tex]

For the first harmonic in the question,

[tex]450 = \dfrac{343n}{4L}[/tex]

make 4L the subject of the formula

[tex]4L = \dfrac{343n}{450}[/tex]

The next higher harmonic will be

[tex]750 = \dfrac{343(n + 2)}{4L}[/tex]

make 4L the subject of the formula

[tex]4L = \dfrac{343(n + 2)}{ 750}[/tex]

Equate the two 4L

[tex]\dfrac{343n}{450} = \dfrac{343( n + 2)}{750}[/tex]

cross multiply

[tex]257250n = 154350( n + 2 )[/tex]

[tex]257250n = 154350n + 308700[/tex]

collect the likes term

[tex]257250n - 154350n = 308700[/tex]

[tex]102900n = 308700[/tex]

[tex]n =\dfrac{ 308700}{102900}[/tex]

n = 3

Given that the speed of sound in air is 343 m/s, The length of the tube can be calculate by using the same formula.

[tex]F = \dfrac{nV}{4L}[/tex]

[tex]450 = \dfrac{3(343)}{4L}[/tex]

[tex]4L = \dfrac{1029}{450}[/tex]

4L = 2.28

[tex]L = \dfrac{2.28}{4}[/tex]

L = 0.57 m

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Answer:

Table Salt

Explanation:

Table Salt has free ions in water that conduct electricity so when mixed with water produces the best conductance of electricity

Answer:

A is core

B is convection zone

C is photosphere

D is Chromosphere

Explanation:

Answer:

l=3.5 x 10^-10m

Explanation:

just toook the test got it right good luck!

Answer:

neutrons

Explanation:

Neutrons are usually released when fission takes place. Fission of a nucleus may be spontaneous, that is, it may happen at random due to internal processes within the nucleus. Fission can also be induced by bombarding a nucleus with a neutron.

Answer:

for a cell to produce a current the cell electrodes of the cell must have a potential difference option A is the correct answer

Answer:

600 million years

Explanation:

i think its pretty simple and u should memorize it :)

Answer:

your answer would be c !

Explanation:

Answer:

velocity = Displacement

Time

Velocity = 100m 45° SE

45s

= 2. 11m/s 45° SE

The charge on the particle when the 4000 v equipotential surface is 26. 0 cm farther from a positively charged particle than the 5000 v equipotential surface is 2.89×10⁻⁵ nC.

The point charge can be found using the following expression.

[tex]q=\dfrac{Vr}{K}[/tex]

Here, V is the potential of a point charge, r is the distance and K is the coulombs constant.

This equation can also be given as,

[tex]r=K\dfrac{q}{V}[/tex]

The 4000 V equipotential surface is 26.0 cm farther from a positively charged particle than the 5000 v equipotential surface. For this case, the distance at both point is,

[tex]r_1=K\dfrac{q}{V_1}\\r_2=K\dfrac{q}{V_2}[/tex]

Subtract both the distance which is equal to 26 cm.

[tex]r_1-r_2=K\dfrac{q}{V_1}-K\dfrac{q}{V_2}\\26=Kq(\dfrac{1}{V_1}-\dfrac{1}{V_2})\\26=(9\times10^9)q(\dfrac{1}{4000}-\dfrac{1}{5000})\\q=2.89\times10^{-14}\rm\; C\\q=2.89\times10^{-5}\rm\; nC[/tex]

Thus, the charge on the particle when the 4000 v equipotential surface is 26. 0 cm farther from a positively charged particle than the 5000 v equipotential surface is 2.89×10⁻⁵ nC.

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Answer: Vegetable oil has a higher heat capacity than water. Option C is correct.

It is given 10 grams of water and 10 grams of vegetable oil in separate containers. Both liquids have a temperature of 24°C. Now Jeff heats both liquids over a flame for five minutes.

It is required to find why the temperature of the oil increased more than the temperature of the water.

Heat capacity determines the heat that is supplied to the body that will be caused by heat of the body.

The vegetable oil warmed more when Jeff increased the temperature. This is because the hydrogen bonding present is responsible for this as oil catches fire easily.

Also to change the temperature of the water, we need more energy per gram of particular liquid.

Therefore, Vegetable oil has a higher heat capacity than water as water requires more energy.

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Answer:

a = (V2 - V1) / t      equation defining acceleration

Acceleration depends on velocity change and the time interval involved.

Answer: Acceleration

Detailed Explanation:

Acceleration is defined as the rate of change of velocity.

Answer:

Here is the solution hope it helps:)

Answer:

280v

Explanation:

Answer: Proxima Centauri is the closet star about 40,208,000,000,000 km away. 

Explanation:

Answer:

The closest star is about 25,300,000,000,000 miles (39,900,000,000,000 kilometers) away

Explanation:

Answer:

Explanation:

[tex]q_{1} =+2.6 X10^{_-6}C \\q_{2} =-5.4 X10^{_-6}C \\F=6.5mN\\F=\frac{Kq_{1}q_{2} }{d^{2} }[/tex]

Explanation:

Pick your direction of the perpendicular forces.

Let down be negative and up be positive.

Remember that sum of all the forces is the net force,

So for the vertical forces, we have

[tex]45 + ( - 45) = 0[/tex]

Next, pick your direction of the parallel forces.

Let right be positive and left be negative so we have

[tex]15 + ( - 45) = - 30[/tex]

So our net force is 30 N to the left

Answer:

You've probably noticed that static electricity is more noticeable during the winter months. This is because the air is very dry. In the summer, the humidity and moisture in the air help electrons move more quickly, which makes it harder to build up a big static charge.

Explanation:

The galaxy comprises of various stars. We are unlikely to find earth-like planets around halo stars in the galaxy because Halo stars need few heavy elements to create rocky planets.

A galaxy is a massive cluster of stars held together by t he effect of gravity.

Halo stars formed in an environment where there were few heavy elements to create rocky planets.

Thus, we are unlikely to find earth-like planets around halo stars in the galaxy because Halo stars need few heavy elements to create rocky planets.

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The total distance traveled by the ball is determined as 49.68 ft.

The height travelled by the ball or the maximum height attained by the ball is calculated as follows;

v² = u² - 2gh

0 = u² - 2gh

2gh = u²

h = u²/2g

h = (40²)/(2 x 32.2)

h = 24.84 ft

Total distance = 2 x 24.84 ft = 49.68 ft

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Answer:

5.097 m

Explanation:

H = vo t - 1/2 a t^2

   = 10t - 1/2 (9.81) t^2       max occurs at -b/2a   =  10/9.81=1.0194 sec

  sub in this 't' value to get H =5.097 m

Answer:

i need the describtion like what i need to do

Explanation:

Answer:

it's easy bro once try yourself if you can't then l am here

The equivalent capacitance of the combination is  [tex]\dfrac{1}{C} = \dfrac{1}{C_1}+\dfrac{1}{C_2}[/tex]  where C1 and C2 are the capacitance of both capacitors in series.

Let the capacitance of both capacitors be C1 and C2. For a series connected capacitors, same charge flows through the capacitors but different voltage flows through them.

Let Q be the amount of charge in each capacitors,

V be the voltage across each capacitors

C be the capacitance of the capacitor.

Using the formula Q = CV where V = Q/C... (1)

For the large capacitor with capacitance of the capacitor C1,

[tex]Q = C_1V_1;[/tex]

[tex]V_1 = \dfrac{Q}{C_1}...(2)[/tex]

where [tex]V_1[/tex] is the voltage across [tex]C_1,[/tex]

For the small capacitor with capacitance of the capacitor [tex]C_2[/tex],

[tex]Q = C_2V_2[/tex];

[tex]V_2 = \dfrac{Q}{C_2} ... (3)[/tex]

where [tex]V_2[/tex] is the voltage across [tex]C_2[/tex],

Total voltage V in the circuit will be;

[tex]V = V_1+V_2... (4)[/tex]

Substituting equation 1, 2 and 3 in equation 4, we have;

[tex]\dfrac{Q}{C} = \dfrac{Q}{C_1} +\dfrac{ Q}{C_2}[/tex]

[tex]\dfrac{Q}{C} = Q({\dfrac{1}{C_1}+\dfrac{1}{C_2})[/tex]

Since change Q is the same for both capacitors since they are in series, they will cancel out to finally have;

[tex]\dfrac{1}{C} = ({\dfrac{1}{C_1}+\dfrac{1}{C_2})[/tex]

This gives the equivalent capacitance of the combination.

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Answer:

the distance the weight is lifted

Explanation:

Answer:

The radius of the new planet is ~2.04 * 10⁶ m, or 2,041,752 m.

Explanation:

We can use Newton's Law of Universal Gravitation:

Let's look at Newton's 2nd Law:

We can set these equations equal to each other:

The mass of the second mass (astronaut) cancels out. We are left with:

We are solving for the radius of the new planet, so we can rearrange the equation:

Substitute in our known values given in the problem (G = 6.67 * 10⁻¹¹ ; M = 7.5 * 10²³ ; a = 12).

The radius of the new planet is ~2.04 * 10⁶ m.

Answer:

Sound intensity is measured with a sound level meter or Sound pressure Level (SPL) Meter.

Explanation:-

It measure sound intensity is the sound pressure level. The unit of measurement is decibels.

Two equivalent hybridized orbitals will form from the mixing of one s-orbital and one p-orbital, that is (sp) orbital.

Orbital is the place around nucleus where mostly the electrons are present. There are four types of orbitals are present, s, p, d, and f.

The orbitals that are formed by the mixing of these orbitals are called hybrid orbitals.

Thus, two equivalent hybridized orbitals will form from the mixing of one s-orbital and one p-orbital, that is (sp) orbital.

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