A bucket of water can be whirled in a vertical circle without the water spilling out, even at the top of the circle when the buc
2 answers:
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Answer:
The mass of the earth,
Explanation:
It is given that,
Time taken by the moon to orbit the earth,
Distance between moon and the earth,
We need to find the mass of the Earth using Kepler's third law of motion as :
So, the mass of the earth is . Hence, this is the required solution.
Answer:
<em>Height = 5.65 km</em>
Explanation:
is the circumference or we can say measures the boundary of hemisphere of friction-less ice that he is sitting on.
So, the height will be = 2 x 3.14 x (30)^2 = 5654.7 m = 5.65 km