Physics, 12.09.2019 18:10 XxpinkgothicxX
Anonconducting container filled with 25 kg of water at 23°c is fitted with a stirrer, which is made to turn by gravity acting on a weight of mass 32 kg. the weight falls slowly through a distance of 5 m in driving the stirrer. assume that all work done on the weight is transferred to the water and that the local acceleration of gravity is 9.8 m·s−2, determine:
(a) the amount of work done on the water.
(b) the internal-energy change of the water.
(c) the final temperature of the water, for which cp =4.18 kj/kgc.
(d) the amount of heat that must be removed from the water to return it to it initial temperature.
Answers: 3
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Anonconducting container filled with 25 kg of water at 23°c is fitted with a stirrer, which is made...
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