Question

7. Two electrons are placed; one at north pole and other at south pole of earth. Find the force between them. Given diameter of earth = 12800 km. [Ans. 1.4 x 10-42 NI​

Answer 1

Answer:

Now we have given that the electrons are placed at north pole south pole of earth, so the distance between them will be equal to the diameter of the earth which is provided as 12800 km

So, G = 6.67 x 10^-11 r = 12800 km m1 = m2 = 9.1 x 10^-31

We know that F=G ( m1 x m2) /r^2 so putting values in this, we get: F = 6.67 x 10^-11 x (9.1 x 10^-31)²/

(12800)²

10^8

F = 552.34 x 10^-73/1.6384 x

F = 337.121 x 10^-81 kg/(1000 m)²

F = 337.121 x 10^-89 kg m / s²