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## The rotation of the planet Mercury is a little strange compared to Earth. It rotates on its axis very slowly; one rotation takes 56.85 earth days. Assuming Mercury is a perfect sphere of mass 3.29*1023 kg and radius 2440 km, calculate its angular momentum. a) 1.0*1030 kg.m2/s b) 1.0*1028kg.m2/s          c) 1.0*1032 kg.m2/s Calculate its rotational KE. a) 1.4*1023 J                          b) 3.4*1021 J                                   c) 6.4*1023 J

The rotation of the planet Mercury is a little strange compared to Earth. It rotates on its axis very slowly; one rotation takes 56.85 earth days. Assuming Mercury is a perfect sphere of mass 3.29*1023 kg and radius 2440 km, calculate its angular momentum.

a) 1.0*1030 kg.m2/s

b) 1.0*1028kg.m2/s

c) 1.0*1032 kg.m2/s

Calculate its rotational KE.

a) 1.4*1023 J

b) 3.4*1021 J

c) 6.4*1023 J

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