# Temperature and Heat

Student Learning Objectives
Lessons / Lecture Notes
Important Equations
Example Problems
Pencasts
Applets and Animations

Student Learning Objectives

• To understand the common temperature scales and how to convert between them.
• To understand thermal expansion.
• To understand heat and the process of heat transfer.
• To understand two important consequences of heat transfer - temperature change and phase change.
• To solve basic calorimetry problems involving heat transfer between systems.
• To understand how heat is transferred between objects by the different means of conduction, convection, and radiation.

Lessons / Lecture Notes

PY105 Notes from Boston University (algebra-based):

HyperPhysics (calculus-based)

General Physics I notes from ETSU (calculus-based)

Important Equations

Example Problems

Problem 1
How much heat is required to change 1.0 kg of ice, originally at –20.0°C, into steam at 110.0°C? Assume 1.0 atm of pressure. (Solutions)

Useful constants:

cwater = 4186 J/(kg Co)
cice = 2.00 × 103 J/(kg Co)
csteam = 2.00 × 103 J/(kg Co)
Lf = 33.5 × 104 J/kg
Lv = 22.6 × 105 J/kg

Problem 2
What mass of water at 95.0 oC must be mixed with 150.0 g of ice at –5.00 oC, in a thermally insulated container, to produce liquid water at 50.0 oC? (Solutions)

Useful constants:

cwater = 4186 J/(kg Co)
cice = 2.00 × 103 J/(kg Co)
Lf = 33.5 × 104 J/kg
Lv = 22.6 × 105 J/kg

Problem 3
One end of an iron poker is placed in a fire where the temperature is 502 oC, and the other end is kept at a temperature of 26 oC. The poker is 1.2 m long and has a radius of 5.0 × 10-3 m. Ignoring the heat lost along the length of the poker, find the amount of heat conducted from one end of the poker to the other in 5.0 s. (Solutions)

Pencasts

Temperature and Heat
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