Question

please help me to solve

Answer 1

6.7×10^-11×6×10^24/6.4×10^6×6.4×10^6
=>6.7×6×10^-11×10^24/6.4×6.4×10^6×10^6
IF WE DIVIDE 6.7×6 BY6.4×6.4 WE GET 0.9814.
AND BY CANCELLING ALL 10s
10^-11×10^24/10^6×10^6=10
10^24/10^11×10^12 =10^24/10^23
BY CANCELLING ALL WE ONLY GET 10.
SO, 9.814×10=9.814
SO, YOUR ANSWER IS 9.814.......

Answer 2

In this question we have to find the gravitational force acting on earth which is 9.8 m/s^2.

In this at first we will multiply the numbers then powers. It is given that Constant of Gravitation is 6.7x10^-11, Mass of Earth is 6x10^24 and Distance is (6.4x10^6)^2. We can simply write about Distance= 6.4x10^6 x 6.4x10^6.

For further explanation refer to the attachment.

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