Assume that the kinetic energy of a 1400-kg car moving at 115 km/h (Problem 9.46) could be converted entirely into heat. What amount of water could be heated from 20 °C to 50 °C by the car’s energy? 4.184 J are required to heat 1 g of water by 1 °C.
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Master Heat Capacity with a bite sized video explanation from Jules Bruno