Energy and Thermal Physics

Big ideas: More info...

  • The energy of a system can be changed by doing work or heating it.
  • In any event, energy is conserved, but is also dissipated - becoming less easy to put to use.
  • Equilibrium occurs when two or more external influences are in balance (statically or dynamically).

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Elastic Potential Energy
Energy and Thermal Physics PRACTICAL PHYISCS

Stretched elastic band: energy stored elasticall...

Class practical: Comparing the energy stored in a stretched elastic band with the energy stored kinetically in a dynamics...

Practical Activity 14-16

Efficiency
Energy and Thermal Physics PRACTICAL PHYISCS

Trolley and falling mass

Class practical: Measuring the gravitational potential energy transferred to kinetic (motion) energy with a dynamics trolley.

Practical Activity 14-16

Efficiency
Energy and Thermal Physics PRACTICAL PHYISCS

Trolley collisions

Demonstration: Collisions between trolleys that result in energy being dissipated to the surroundings.

Practical Activity 14-16

Efficiency
Energy and Thermal Physics PRACTICAL PHYISCS

Using an electric motor to raise a load

Demonstration: An electric motor lifts a load.

Practical Activity 14-16

Power
Energy and Thermal Physics PRACTICAL PHYISCS

Climbing stairs

Class practical: Estimating the change in energy stored gravitationally in climbing a flight of stairs.

Practical Activity 14-16

Power
Energy and Thermal Physics PRACTICAL PHYISCS

Comparing the powers of electric motors 1

Demonstration: Comparing the power output of two motors.

Practical Activity 14-16

Power
Energy and Thermal Physics PRACTICAL PHYISCS

Comparing the powers of electric motors 2

Demonstration: Comparing the power output of two motors.

Practical Activity 14-16

Power
Energy and Thermal Physics PRACTICAL PHYISCS

Comparing the powers of lamps

Demonstration: The intensity of illumination from different lamps is compared.

Practical Activity 14-16

Power
Energy and Thermal Physics PRACTICAL PHYISCS

Investigating light intensity from a lamp

Demonstration: Measuring how the light intensity of a lamp varies with power input.

Practical Activity 14-16

Power
Energy and Thermal Physics PRACTICAL PHYISCS

Measuring the power of a lamp

Class practical: Calculating the energy transferred per second from a lamp.

Practical Activity 14-16

Power
Energy and Thermal Physics PRACTICAL PHYISCS

Measuring the power of a motor

Class experiment: measuring the power input to a motor.

Practical Activity 14-16

Power
Energy and Thermal Physics PRACTICAL PHYISCS

Power cycling up a hill

Class practical: Measuring the power used in cycling uphill.

Practical Activity 14-16

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