E N E R G Y

1. R Practical: measuring specific heat capacity

2. R Practical: Insulators, energy efficiency

3. Stores

3.1. Gravitational potential energy (Ep = m * g * h)

3.2. Kinetic (Ek = 1/2 * m * v2)

3.3. Elastic potential energy (Ee = 1/2 * k * e2)

3.3.1. K = force (N) / extension

3.4. Thermal

3.4.1. specific heat capacity

3.4.1.1. E = m * cap * ▲B

3.5. Power

3.5.1. rate of energy transfer

3.5.1.1. w = e / t

4. law of conservation of energy

4.1. transfer of energy by force

4.1.1. work done ( W = F * D)

4.1.2. friction

4.2. dissipation of energy

4.2.1. total energy

4.2.1.1. useful energy + wasted energy

4.2.1.1.1. surroundings heat up

4.2.2. Efficiency

4.2.2.1. useful energy / total energy

4.2.2.2. saving energy

4.2.2.2.1. houses

4.2.2.2.2. machines