Physics, 28.06.2020 01:01 aprilkenedy12
the temperature of a heat engine is 500k. some of the heat generated by the engine flows to the surroundings which are at a temperature of 125k. the efficiency of the engine is __ %
Answers: 2
Physics, 21.06.2019 19:00
Adelivery truck leaves a warehouse and travels 2.60 km north. the truck makes a left turn and travels 1.25 km west before making another right turn to travel 1.40 km north to arrive at its destination. what is the magnitude and direction of the truck's displacement from the warehouse?
Answers: 2
Physics, 22.06.2019 16:50
Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =
Answers: 1
Physics, 23.06.2019 08:00
Identify the arrows that represent the process of cooling..
Answers: 2
the temperature of a heat engine is 500k. some of the heat generated by the engine flows to the surr...
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