question archive 1)A heat engine converts the flow of heat that results from a difference in temperatures into work
1)A heat engine converts the flow of heat that results from a difference in temperatures into work
Subject:PhysicsPrice: Bought3
1)A heat engine converts the flow of heat that results from a difference in temperatures into work. Write one or two sentences describing the temperatures at which a very efficient heat engine operates.
2)If you wanted to improve the efficiency of a heat engine, which of the temperatures at which it operates would you increase?
3)Calculate the amount of heat needed to warm 24.6 kg of water from a room temperature of 20 degrees Celsius to 60 degrees Celsius for use in a dishwasher.
4)If the water heater has an efficiency of 61%, how much energy is lost to the surroundings while heating the water for one cycle of this dishwasher?
