Physics Fundamentals and Miscellaneous

Physics Fundamentals

In this part, we cover energy, power, heat, and specific heat.

Reading

• Hewitt, Conceptual Physics 13-16

• Incropera?

• EFS

Basic Concepts

Energy Units

• Joule

  • SI Unit. One Newton-Meter.

• Kilowatt-Hour

  • Energy consumed by 1 kW load over one hour

• Calorie

  • Energy to heat one gram of water one degree Celsius

• Kilo-calorie

  • One thousand calories. Used in food energy content.

• British Thermal Unit (BTU)

  • Energy to heat one pound of water by one degree Fahrenheit

• Quad

  • One quadrillion ($10^{15}$) BTU

• Therm

Energy Unit Table

Unit		Joule Equivalent
Joule
Kilowatt-Hour		3.6 MJ
BTU		1055 J
Calorie		4.186 J
Food Calorie		4186 J
Therm	100,000 BTU

Power Units

• Watt

• Horsepower

• BTU/hour (sometimes just called BTU)

Power Unit Table

Unit		Watt Equivalent
Watt
BTU/hour		0.293 Watt
Horsepower		750 Watt

Temperature

• Internal energy

• Conversion between scales

Heat

• energy flow from one point to another

• units and notation

• newtons law of cooling

Heat Capacity

• specific heat

• specific heat capacity

• drop a hot metal in water