A table can be made from minerals but other kinds of solids as well
Answer:
The value is ![U = 0.06 \ J](https://tex.z-dn.net/?f=U%20%20%3D%200.06%20%5C%20%20J%20%20)
Explanation:
From the question we are told that
The value of charge on each three point charge is
![q_1 = q_2 = q_3 =q= 1.05 \mu C = 1.05 *10^{-6} \ C](https://tex.z-dn.net/?f=q_1%20%3D%20q_2%20%3D%20q_3%20%3Dq%3D%20%201.05%20%5Cmu%20C%20%20%3D%20%201.05%20%2A10%5E%7B-6%7D%20%5C%20%20C)
The length of the sides of the equilateral triangle is ![r = 0.500 \](https://tex.z-dn.net/?f=r%20%20%3D%20%200.500%20%5C%20)
Generally the total potential energy is mathematically represented as
![U = k * [ \frac{q_1 * q_2}{r} + \frac{q_2 * q_3}{r} + \frac{q_3 * q_1}{r} ]](https://tex.z-dn.net/?f=U%20%20%3D%20k%20%2A%20%20%5B%20%5Cfrac%7Bq_1%20%2A%20%20q_2%7D%7Br%7D%20%20%2B%20%20%5Cfrac%7Bq_2%20%2A%20%20q_3%7D%7Br%7D%20%20%20%2B%20%5Cfrac%7Bq_3%20%2A%20%20q_1%7D%7Br%7D%20%5D)
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Here k is coulomb constant with value ![k = 9*10^{9}\ kg\cdot m^3\cdot s^{-4} \cdot A^{-2}.](https://tex.z-dn.net/?f=k%20%3D%209%2A10%5E%7B9%7D%5C%20%20kg%5Ccdot%20m%5E3%5Ccdot%20s%5E%7B-4%7D%20%5Ccdot%20A%5E%7B-2%7D.)
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Answer:
d) The screen is in a short distance from the hole