How much work must be done to bring three electrons from a great distance apart to 5.0×10^−10 m from one another (at the corners of an equilateral triangle)?

1.38 x 10^-18 J

Explanation:

q = - 1.6 x 10^-19 C

d = 5 x 10^-10 m

the potential energy of the system gives the value of work done

The formula for the potential energy is given by

So, the total potential energy of teh system is

As all the charges are same and the distance between the two charges is same so the total potential energy becomes

K = 9 x 10^9 Nm^2/C^2

By substituting the values

U = 1.38 x 10^-18 J

show the wavelengths of a wave. show the crests of a wave.