A freezer is used to freeze 10 l of water completely into
A freezer is used to freeze 1.0 L of water completely into ice. The water and the freezer remain at a constant temperature of T=0 degree C. Determine
(a) the change in the entropy of the water and
(b) the change in the entropy of the freezer.
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A heat engine is being designed to have a Carnot efficiency of 65% when operating between two heat reservoirs. (a) If the temperature of the cold reservoir is 20 degrees, what must be the temperature of the hot reservoir? (b) Can the actual efficienc
In each cycle of its operation, a heat engine expels 2400 J of energy and performs 1800 J of mechanical work.
A heat pump has a coefficient of performance of 3.80 and operates with a power consumption of 7.03 X 10^3 W. (a) How much energy does the pump deliver into a home during 8.00 h of continuous operation? (b) How much energy does it extract from the out
A heat engine operates in Carnot cycle between 80.0 degrees C and 350 degrees C. It absorbs 21000J of energy per cycle from the hot reservoir. The duration of each cycle is 1.00 s.
A freezer is used to freeze 1.0 L of water completely into ice. The water and the freezer remain at a constant temperature of T=0 degree C. Determine (a) the change in the entropy of the water and (b) the change in the entropy of the freezer.
A gas is compressed at a constant pressure of 0.800 atm from 9.00L to 2.00 L. In the process, 400 J of energy leaves the gas by heat. a) What is the work done on the gas? b) What is the change in its internal energy?
Mechanisms of developmental change: Why and by what means does the child’s physical/psychological condition change in Erickson's psycho-social Theory? What determines the rate?
Continuous versus stepwise change: According to Freud and EriKSon theory do children grow by imperceptibly small increments or do they periodically move up from one identifiable stage to another?
Desirable versus undesirable, and normal versus abnormal: How does the theory distinguish desirable from undesirable development and normal from abnormal development?
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