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Physics 2524
Chapter 16
22
Physics
Undergraduate 2
12/12/2010

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Term
What is Potential Energy? Kinetic Energy?
Definition
Potential energy is energy possessed by reason of position or deformation. Kinetic energy is energy possessed by reason of motion.
Term
What are the First and Second Laws of Thermodynamics?
Definition
1st: Energy cannot be created or destroyed but may be converted from one form to another. 2nd: No machine, actual or ideal, can both continuously and completely transform heat into mechanical energy. Nothing is 100% efficient.
Term
Name three ways that heat is transferred
Definition
Radiation, Convection, Conduction
Term
What is a British Thermal Unit?
Definition
A BTU is the amount of heat required to raise the temperature of One Pound of water one degree Fahrenheit.
Term
Convert 22° Celsius to °Fahrenheit.
Definition
Multiply 22° by 1.8 (which equals 39.6), then add 32, which makes a total of 71.6°F.
Term
Convert 105°F to °Celsius
Definition
Subtract 105° by 32 (which equals 73), and then divide by 1.8 which brings you to 40.56°
Term
How many BTU's are required to raise one pound of water from 50°F to 210°F?
Definition
160 BTU's
Term
What is the Latent Heat of Fusion?
Definition
Heat added to solid to cause a change of state to a liquid. (One pound of Ice at 32°F becomes Water with the addition of 144 BTU's of heat)
Term
What is the Latent Heat of Evaporation?
Definition
Heat added to a liquid to cause a change of state to a gas/vapor. (One pound of water at 212°F becomes one pound of steam at 212°F when 970.3 BTU's of heat are added)
Term
What happens to the boiling point of water as the pressure increases?
Definition
It also increases
Term
What happens to the Enthalpy of Evaporation as the pressure increases?
Definition
It decreases
Term
What is the definition of specific heat?
Definition
The amount of heat required to raise the temperature of one pound of any substance one °F
Term
Microscopic properties
Definition
atoms and molecules
Term
Macroscopic properties
Definition
Solids, liquids, and gases
Term
Pressure in a system is measured to be 60kPa. at a later time the pressure is 40kPa. What is the Δp?
Definition
-20kPa
Term
Which system contains more atoms: 5 mol of helium (A=4) or 1 mol of Neon (A=20)
Definition
Helium
Term
The temp of a glass of water increases from 20°C to 30°C. What is ΔT?
Definition
10K
Term
Triple point of water?
Definition
273.16K
Term

Which has a sublimation temp that is higher than a melting temp?

Water or Carbon dioxide?

Definition
Water
Term
You have two containers. One full of helium gas, and the other, of equal mass, of nitrogen gas. How do the temperatures compare?
Definition
Thelium < Tnitrogen
Term
Isochoric Process
Definition
Constant volume
Term
Quasi-static process
Definition
Process that is in thermal equilibrium at all times.
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