- What do geostationary satellites do?
- Explain why the stability of a car can be improved by widening the wheel base and lowering the centre of gravity.
- What is red-shift and how does it work?
- what is ohm's law?
- A kettle requires 2400 Coulombs of charge to pass through its heating element, with a resistance of 6 Ohms, in a time of 200 seconds in order to boil the water inside it. Calculate the current flowing and the power of the kettle.