Physics, 07.07.2020 16:01 isahbellas
1. How much heat energy is required to raise the temperature of a 5 kg aluminium bar
from 28°C to 68°C ?
( Specific heat capacity of aluminium = 900 J kg C)
Answers: 1
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Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.
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Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.
Answers: 1
1. How much heat energy is required to raise the temperature of a 5 kg aluminium bar
from 28°C to 6...
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