What is the door''s moment of inertia for rotation

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Reference no: EM1322117

Q1. The specific heat capacity of aluminium is 0.22 cal/g°C. How much energy needs to flow into 20 grams of aluminium to change its temperature by 15°C?

Q2. A 21.0 kg solid door is 220 cm tall, 94cm wide. What is the door's moment of inertia for rotation about a vertical axis inside the door, 17cm from one edge?

Q3. A tennis ball with a speed of 13.20 m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 10.36m/s. If the ball is in contact with the wall for 0.0140 s, what is the average acceleration of the ball while it is in contact with the wall? Take "toward the wall" to be positive direction. Respond in units of m/s^2

Reference no: EM1322117

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