Question

Two tiny metal spheres A and B, mass mA = 5.00 g and mB = 10.0 g, have equal positive charge q = 5.00 μC. The spheres are connected by a massless nonconducting string of length d = 1.00 m, which is much greater than the radii of the spheres.

a. What is the electric potential energy of the system?

Answer 1

U=0.22475 Joules

Step-by-step explanation:

The electric potential energy between 2 charges can be calculated with the formula
`U=k(q_1q_2)/(r)`, where (in S.I.):

`k=8.99*10^(9) Nm^(2)C^(-2)` is the Coulomb constant

`q_1=q_2=5.00*10^(-6)C` are the values of the charges

`r=1.00m` their separation

So we have
`U=k(q_1q_2)/(r)=0.22475J`