A heating element having a resistance (at its operating temperature) of 148 is connected to a battery having an emf of 523 V and unknown internal resistance.
It is found that thermal energy is being generated in the resistance of the heating element at a rate of 66.0 W. What is the rate at which thermal energy is being generated in the internal resistance of the battery?
Question 2
Suppose that the Department of Energy develops a new reversible engine that has a coefficient of performance (COP) of 4.0 when operated as a refrigerator and a COP of 5.0 when operated as a thermodynamic pump.
What is its thermal efficiency when operated as a thermodynamic engine doing work? A) 10
B) 20
C) 25
D) 45
E) 80
Setup used to check the opening temperature of a thermostat.
Checking the fuel pressure using a fuelpressure gauge connected to the Schrader valve.
Thermodynamic Diagrams and Vertical Temperature Profiles
Heating the amosphere with no greenhouse gases
Leaf margins and air temperature
In 1994 a team of German physicists created an atom of Element 110. If the atom