Contact And Non-contact Forces (GCSE Physics)

Which of these is a correct pairing: force and whether contact or non-contact?

Two magnets are held near each other so their like poles face. What non-contact force acts between them and what is its direction?

A suspended mass is attached to a spring and is pulled down then released so it oscillates. Which two forces are mainly involved during the vertical motion?

A paper clip is attracted to a magnet without touching it. This is an example of which of the following?

A charged rod is held above small bits of paper and they jump up to stick to the rod. Which mechanism is responsible?

A small object of mass m is held at rest in air by a string. Which diagram of forces correctly lists the two vertical forces acting on the object and their directions?

A metal ball hangs on an insulating thread near a charged rod; it is attracted but does not touch. If you now earth the ball, what happens and why?

Which of the following is NOT a non-contact force?

Which of these best describes the electric force between two small charged spheres if the distance between them is doubled?

A person stands on an insulating platform and touches a charged dome. Why is there no dangerous current through the person when the dome has low voltage (small potential difference) relative to ground?

A charged rod repels another rod at a distance. Which property of the rods causes the strength of that non-contact force to change if you move them further apart?