A. 3.50 x 10-10N.
B. 3.71 X 10-8N.
C. 3.57 x 10-2N.
D. 4.00 x 102N.

Correct Answer:

Option B = 3.71 X 10-8N.

Explanation

The force of attraction between the two spheres is given by F (GM1 M2)/r2 = (6.67X 10-11 X5X10)/(0.3)2
= 3.71 X 10-8N.

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