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3 years ago

During the polarization of an object, what happens to the charges that the object carries?

Physics

2 answers:

Bad White [126]3 years ago

8 0

The answer is B. Ur welcome

oee [108]3 years ago

4 0

Answer: Option (A) is the correct answer.

Explanation:

Polarization is defined as the development of a charge on the surface of an object either because of rubbing or due to the transfer of electrons from one object to another.

For example, when a glass rod is rubbed with a silk cloth then it tends to become positively charges because electrons from it flow towards the silk cloth.

So, it is only the electrons which tend to move as electrons are mobile in nature. As protons are positively charges and they are present inside the nucleus of an atom. Hence, they are tightly bound and they are unable to move.

Therefore, we can conclude that during the polarization of an object, negative charges flow toward positive charges.

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Katen [24]

Answer:

geothermal

Explanation:

Geothermal energy is the thermal energy generated and stored in the Earth.

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3 years ago

A student, standing on a scale in an elevator at rest, sees that his weight is 840 N. As the elevator rises, his weight increase

ololo11 [35]

As per FBD while its accelerating upwards

we can say that

$F_n - mg = ma$

here normal force is given as

$F_n = 1050 N$

$W = 840 N$

now mass is given as

$m(9.8) = 840$

$m = 85.7 kg$

now we will have

$1050 - 840 = 85.7 \times a$

$a = 2.45 m/s^2$

Now while accelerating downwards we can say by FBD

$mg - F_n = ma$

again plug in all values

$840 - 588 = 85.7 \times a$

$a = 2.94 m/s^2$

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4 years ago

Identical isolated conducting spheres 1 and 2 have equal charges and are separated by a distance that is large compared with the

scoundrel [369]

Answer:

F = 0.1575 N

Explanation:

When the third sphere touches the first sphere, the charge is distributed between both spheres, then now the first sphere has only half of his original charge.

In this moment then

Sphere one has a charge = Q/2

Sphere three has a charge = Q/2

Now when the third sphere touches the second sphere again the charge is distributed in a manner that both sphere has the same charge.

How the total charge is Q = Q/2 + Q = 3/2Q, when the spheres are separated each one has 3/4Q

Sphere two has a charge = 3/4Q

Sphere three has a charge = 3/4Q

The electrostatic force that acts on sphere 2 due to sphere 1 is:

F = $\frac{kQ_{1}Q_{2} }{r^{2} }$

F= $\frac{K(Q/2)(3Q/4)}{r^{2} }$

how $\frac{KQ^{2} }{r^{2} }$ = 0.42

Then

F = $\frac{0.42*3}{8}$

F = 0.1575 N

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3 years ago

Explain how machines can be useful if the output is always less than the input work

Anni [7]

Because: Some of the work done by the machine is used to overcome the friction created by the use of the machine. ... Work output can never be greater than work input. Machines allow force to be applied over a greater distance, which means that less force will be needed for the same amount of work.

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4 years ago

A direct injection (DI) fuel injector system sprays high-pressure fuel, up to _______ psi, into the combustion chamber as the pi

Vika [28.1K]

The answer is not 65. ya moms a hooch

3 0

4 years ago

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