q1 a book with a mass of 20 kg is held in, Physics

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q1 a book with a mass of 20 kg is held in

Q1. A book with a mass of 2.0 kg is held in equilibrium on a board with a slope of 60.0 degrees by a static frictional force. What is the frictional force exerted on book?

Q2. If a person radiates about 66 W of power at room temperature, how long does it take for person to radiate away the energy acquired by consuming a 230 Calorie doughnut?

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Physics: q1 a book with a mass of 20 kg is held in

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