3 years ago

Please help me find the last one ASAP! Thanks :))) (You don't have to send the definition)

Physics

1 answer:

professor190 [17]3 years ago

5 0

The word friction is 4 across and 8 up in the bottom left corner. The word is shown as:
F
R
I
C
T
I
O
N

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topjm [15]

Answer:

$\Delta U = \frac{Qq}{4\pi\epsilon_0}(\frac{1}{r_2^2}-\frac{1}{r_1^2})$

Explanation:

The electrostatic potential energy is given by the following formula

$U = \frac{1}{4\pi\epsilon_0}\frac{q_1q_2}{r^2}$

Now, we will apply this formula to both cases:

$U_1 = \frac{1}{4\pi\epsilon_0}\frac{Qq}{r_1^2}\\U_2 = \frac{1}{4\pi\epsilon_0}\frac{Qq}{r_2^2}$

So, the change in the potential energy is

$\Delta U = U_2 - U_1 = \frac{Qq}{4\pi\epsilon_0}(\frac{1}{r_2^2}-\frac{1}{r_1^2})$

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To convert inches to centimeters, use an easy formula and multiply the length by the conversion ratio.

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2 years ago

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