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Physics 17 Exam 3 Equation Sheet
Water: c = 1.0 cal/g-Co
Ice: c = 0.5 cal/g-Co
Steam: c = 0.5 cal/g-Co
Latent Heat of Fusion: 80 cal/gram
Latent Heat of Vaporization: 540 cal/gram
Freezing Point: 0 Co
Boiling Point: 100 Co
Q = mcT
Q1 + Q2 = 0 (Mixture Equation)
Kelvin Temperature = Celsius Temperature + 273
Fahrenheit Temperature = (9/5) Celsius Temperature + 32
R = eAT4, where  = 5.67 x 10-8 W/(m2-T4)
PV = NkT, where k = 1.38 x 10-23 J/K
The atomic weight of a substance, in grams, equals one mole.
22.4 liters per mole
Avogadro’s Number: NA = 6.02 x 1023 atoms (or molecules) per mole
R = kA T/x, where k = thermal conductivity
F = kQ1Q2/r2, where k = 9 x 109 N-m2/C2
I = V/R
V = IR
P = I2R (power consumed)
P = IV (power output of a power supply)
R = R1 + R2 (series connection)
R = R1R2/(R1+R2) parallel connection (for two resistors)
1/R = 1/R1 + 1/R2 + 1/R3 + …. (parallel connection of three or more resistors)
If the current through a resistance R is I, the effect is the same as if a battery whose voltage is
V = IR were connected to it.
F = QvB
Use “right-hand-rule” to determine the direction of the magnetic force on a moving charge.
Magetic Flux:  = BA
Faraday’s Law: V = t
Transformer Equation: V2 = (N1/N2) V1