What is the shortest stopping time for a car which is travelling at \[16m s^{-1}\]
and has a
maximum deceleration of \[2.5 m s^{-2}\] ?

State the law of conservation of momentum

Explain why heat does not travel through solids by means of convection.

Storage heaters are frequently used to heat buildings. State the principle that underlies the operation
of an electrical storage heater.

If a diamond has a refractive index of 2.42, what is the speed of light in the diamond?

Define the volt.

A positively charged rod is brought near to a neutral, conducting sphere that is on top of an insulating
stand. How would a student charge the sphere negatively by induction?

Explain what is meant by the statement: “Zinc has a threshold frequency of \[1.04 × 10^{15}\] Hz”.

Give one benefit of switching from fossil fuels to nuclear power for the generation of electricity.
Explain your answer

Give an expression for the minimum frequency of a photon that can form an electron and a positron by
pair production.

What event inside an LED causes the release of a photon?