Question

the moon takes _____to rotate once on its axis

Answer 1

d= volume of the oil drop/ area of the film

 

= 4/3 *pi* (0.025cm)^3/(pi* (10 cm)^2

 

= 2.08X10^-7 cm

Answer 2

The moon takes approximately 27 days to rotate on once on its Axis.

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