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
Taking a Patient’s Oral Temperature with an Electronic Thermometer
Connections and settings necessary to measure fuel-injector resistance.
Correlates well with global temperature prior to the impact of GHG emissions
Leaf margins and air temperature
The five skills of the element Collection of Information
The two skills of the element Generating Alternatives