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tankabanditka [31]
2 years ago
5

S Four identical particles, each having charge q and mass m, are released from rest at the vertices of a square of side L. How f

ast is each particle moving when their distance from the center of the square doubles?
Physics
1 answer:
SashulF [63]2 years ago
4 0

The charged particle will have velocity of 5.41 kq^2/ mL .

What is Kinetic energy ?

A particle or an item that is in motion has a sort of energy called kinetic energy. An item accumulates kinetic energy when work, which involves the transfer of energy, is done on it by exerting a net force.

Here electric potential will be :

Ui = 4k q^2 / L +2k q^2 / L root2

when we double the distance of charges the final potential is :

Uf = 2kq^2 /L + 2k Q^2/ L root2

Kinetic energy : Uf - Ui

so after putting the values and solving the equation we get :

v= 5.41 kq^2/ mL

To learn more about kinetic energy click on the link below:

brainly.com/question/12337396

#SPJ4

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In a crude model of a rotating diatomic molecule of chlorine (Cl2), the two Cl atoms are 2.00 ✕ 10-10 m apart and rotate about t
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Answer:

1.03723\times 10^{-20}\ J

Explanation:

r = Radius of atom = 1\times 10^{-10}\ m

m = Mass of chlorine atom = 5.88\times 10^{-26}\ kg

\omega = Angular speed = 4.2\times 10^{12}\ rad/s

The moment of inertia of the system is given by

I=2mr^2\\\Rightarrow I=2\times 5.88\times 10^{-26}\times (10^{-10})^2\\\Rightarrow I=1.176\times 10^{-45}\ kgm^2

Kinetic energy is given by

K=\dfrac{1}{2}I\omega^2\\\Rightarrow K=\dfrac{1}{2}\times 1.176\times 10^{-45}\times (4.2\times 10^{12})^2\\\Rightarrow K=1.03723\times 10^{-20}\ J

The rotational kinetic energy of one molecule of the atom is 1.03723\times 10^{-20}\ J

7 0
3 years ago
Two charges, Q1 and Q2, are separated by 6·cm. The repulsive force between them is 25·N. In each case below, find the force betw
Misha Larkins [42]

Answer:

a) 5 N b) 225 N c) 5 N

Explanation:

a) Per Coulomb's Law the repulsive force between 2 equal sign charges, is directly proportional to the product of the charges, and inversely proportional to the square of  the distance between them, acting along  the  line that joins the charges, as follows:

F₁₂ = K Q₁ Q₂ / r₁₂²

So, if we make Q1 = Q1/5, the net effect will be to reduce the force in the same factor, i.e. F₁₂ = 25 N / 5 = 5 N

b) If we reduce the distance, from r, to r/3, as the  factor is squared, the net effect will be to increase the force in a factor equal to 3² = 9.

So, we will have F₁₂ = 9. 25 N = 225 N

c) If we make Q2 = 5Q2, the force would be increased 5 times, but if at the same , we increase the distance 5 times, as the factor is squared, the net factor will be 5/25 = 1/5, so we will have:

F₁₂ = 25 N .1/5 = 5 N

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What is the difference between a solar cell and a solar panel
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Solar cells and solar panels are both integral, and closely related, parts of a solar energy system. When reading about solar energy systems, it may seem as if these titles are almost interchangeable. Writers refer to them both when discussing energy production and output, and often do so without explanation of how these parts work. However, each plays a distinct role. Solar cells contain all the parts necessary to convert sunlight to electricity. Solar panels combine and direct all of that energy output.

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A volume of air increases 0.227 m^3 at a net pressure of 2.07 x 10^7 Pa. How much work is done on the air?
aliya0001 [1]

Answer:

The work done on the air is 4.699 x 10⁶ Joules

Explanation:

Given;

increase in air volume, ΔV = 0.227 m³

net pressure of the air, P = 2.07 x 10⁷ Pa

The work done on the air is given by;

W = PΔV

Where;

W is the work done on the air

P is the net pressure

ΔV  is the increase in air volume

Substitute the given values and solve for work done;

W = (2.07 x 10⁷ Pa) (0.227 m³)

W = 4.699 x 10⁶ Joules

Therefore, the work done on the air is 4.699 x 10⁶ Joules

7 0
3 years ago
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