- What is the law of conservation of energy?
- Explain what is meant by “terminal velocity” with regards to falling objects.
- There is an oil tank that has a rectangular base of dimensions 2.4 m by 1.5 m. The tank is filled with oil of density 850 kg / m3 to a depth of 1.5 m. What is the mass of the oil?
- Calculate the total resistance across AB; between A and B are two parallel branches, one branch with a 3 Ohm and a 5 Ohm resistor, the other branch with a 4 Ohm resistor.
- Why are some electromagnetic waves harmful to humans?