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1. |
Calculate the force of attraction between two balls each of mass 1kg when their centres are 10cm apart. The value of gravitational constant G = 6.67×10-11 Nm2 kg(-2). |
A. | 6.67×10-11N |
B. | 6.67×10-10N |
C. | 6.67N |
D. | 6.67×1010 N |
Answer» C. 6.67N | |