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Q1. A man of mass 81.5 kg walks down the aisle of an airplane at a speed of 1.20 m/s in the forward direction while the plane moves at a speed of 290 m/s relative to the earth.

(a) Find out the man's kinetic energy relative to plane.

(b) Find out the man's kinetic energy relative to earth.

Q2. A large power plant converts 1000 kg of water to steam every second to run its generators. Compute the amount of heat required each second just to vaporize the water, assuming this is done at 100 C. What is the power input in megawatts for this purpose?

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