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Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 1 > Chapter 20 - Heat and Calorimetry > A ball of mass 1 kg is dropped on a floor from a height of 2.0 m. After the collision it rises up to a height of 1.5 m. Assume that 40% of the mechanical energy lost goes as thermal energy into the ball. The rise in the temperature of the ball is

A ball of mass 1 kg is dropped on a floor from a height of 2.0 m. After the collision it rises up to a height of 1.5 m. Assume that 40% of the mechanical energy lost goes as thermal energy into the ball. The rise in the temperature of the ball is

A 50 Kg man is running at a speed of 18 Km H−1. If all the kinetic energy of the man can be used to increase the temperature of water from 20°C to 30°C how much water can be heated with this energy?