I need the answer 2.1. A nonconducting container filled with 25 kg of water at 20°C is fitted with a stirrer.which is made to turn by gravity acting on a weight of mass 35 kg. The weight fallsslowly through a distance of 5 m in driving the stirrer. Assuming that all work doneon the weight is transferred to the water and that the local acceleration of gravity is98 ms, determine:la) The amount of work done on the water.(b) The internal energy change of the water.(e) The final temperature of the water, for which Cp4.18 kJ kg-C.(d) The amount of heat that must be removed from the water to return it to its initialtemperature.(e) The total energy change of the universe because of (1) the process of loweringthe weight, (2) the process of cooling the water back to its initial temperature, and(3) both processes together.

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A nonconducting container filled with 25 kg of water at 20°C is fitted with a stirrer, which is made to turn by gravity acting on a weight of mass 35 kg. The weight falls slowly through a distance of 5 m in driving the stirrer. Assuming that all work done on the weight is transferred to the water and that the local acceleration of gravity is 9.8 ms, 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 Cp4.18 kg-C

A nonconducting container filled with 25 kg of water at 20°C is fitted with a stirrer, which is made to turn by gravity acting on a weight of mass 35 kg. The weight falls slowly through a distance of 5 m in driving the stirrer. Assuming that all work done on the weight is transferred to the water and that the local acceleration of gravity is 9.8 ms, 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 Cp4.18 kg-C

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.78P: The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016,...

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Question

I need the answer

2.1. A nonconducting container filled with 25 kg of water at 20°C is fitted with a stirrer.
which is made to turn by gravity acting on a weight of mass 35 kg. The weight falls
slowly through a distance of 5 m in driving the stirrer. Assuming that all work done
on the weight is transferred to the water and that the local acceleration of gravity is
98 ms, determine:
la) The amount of work done on the water.
(b) The internal energy change of the water.
(e) The final temperature of the water, for which Cp4.18 kJ kg-C.
(d) The amount of heat that must be removed from the water to return it to its initial
temperature.
(e) The total energy change of the universe because of (1) the process of lowering
the weight, (2) the process of cooling the water back to its initial temperature, and
(3) both processes together.

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