# Shared Flashcard Set

## Details

Physics 2524
Chapter 16
22
Physics
12/12/2010

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
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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