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As a result of the friction of tides, the earth rotates more slowly as time progresses. Each year the time it takes for the earth to complete one rotation increases by 20microseconds. The mass of the earth is 5.9785*10^24 kg and the radius is 6.37*10^6 m. At what rate is angular momentum(kg*m^2/s^2) lost because of tidal friction? What is the torque(N*m) acting on the earth?

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