Prof. Dr. Emil Shoukralla
Prepared by: Ahmed Alordony
The Domain is R cfw_ - < x < + .
The Range is [-1, 1] cfw_ 1 y +1.
1. In order to understand the concept of temperature it is necessary to understand
a. the zeroth law of thermodynamics.
b. the first law of thermodynamics.
c. the second law of thermodynamics.
d. all of the above.
Chapter 20The First Law of Thermodynamics
1. Determine the heat capacity (in calories/C) of a lake containing one million gallons (approximately 4
million kilograms) of water at 15C.
a. 4 106
b. 4 109
c. 4 103
d. 1 103
e. 4 102
Chapter 21The Kinetic Theory of Gases
1. A container having a volume of 1.0 m3 holds 5.0 moles of helium gas at 50C. If the helium behaves
like an ideal gas, the total energy of the system is
a. 2.0 104 J.
b. 2.5 104 J.
c. 1.7 103 J.
Chapter 22Heat Engines, Entropy, and the Second Law of Thermodynamics
1. A gasoline engine absorbs 2 500 J of heat and performs 1 000 J of mechanical work in each cycle. The
efficiency of the engine is
The net force on a molecule at A is zero
because such a molecule is completely
surrounded by other molecules. The net force
on a surface molecule at B is downward
because it isnt completely surrounded by
End view of a need