Biology

Biology, 02.07.2019 21:30, kamilagreyes9

Which reverses the normal flow of thermal energy? a. steam engine b. heat pump c. combustion engine d. refrigerant

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Physics, 22.06.2019 00:00, angelequej1167

Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.

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Physics, 21.09.2019 09:00, Jasten

Worth 50 points 1)going against the natural flow of heat and moving thermal energy from a low temperature to a high temperature is . 2)which are sources for thermal energy for a heat pump? check all that apply. air water sunlight ground fire 3)a is formed from two pieces of different metals stuck together lengthwise. bimetallic coil coolant heat pump furnace 4)which burns fuel to release thermal energy? refrigeration combustion coolant thermostat 5)for which function is a heat engine most likely used? starting an air conditioner running a car igniting a furnace activating a thermostat 6)which best describes why heat pumps are reversible? they can heat and cool an indoor space. they involve a metal expanding or contracting against another. they combust and can also add coolant. they allow a piston to move up and down. 7)the thermal energy in a heat engine is used to move a piston. which best describes why this is possible? the increase in thermal energy results in an increase in pressure. the decrease in thermal energy results in an increase in pressure. the increase in thermal energy results in a decrease in pressure. the decrease in thermal energy results in a decrease in pressure.

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Engineering, 23.09.2019 19:10, payshencec21

Steam at a temperature th = 180 ∘c and p = 1.00 atm enters a heat engine at an unknown flow rate. after passing through the heat engine, it is released at a temperature tc = 100 ∘c and p = 1.00 atm . the measured power output p of the engine is 580 j/s , and the exiting steam has a heat transfer rate of hc = 2450 j/s . find the efficiency e of the engine and the molar flow rate n/t of steam through the engine. the constant pressure molar heat capacity cp for steam is 37.47 j/(mol⋅k) .

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Engineering, 06.10.2019 01:30, kenzie19169

To practice problem-solving strategy 20.1 heat engines. steam at a temperature th = 185 ∘c and p = 1.00 atm enters a heat engine at an unknown flow rate. after passing through the heat engine, it is released at a temperature tc = 100 ∘c and p = 1.00 atm . the measured power output p of the engine is 560 j/s , and the exiting steam has a heat transfer rate of hc = 3550 j/s . find the efficiency e of the engine and the molar flow rate n/t of steam through the engine. the constant pressure molar heat capacity cp for steam is 37.47 j/(mol⋅k) .

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