Paper 2 Revision Recall Quiz 1

An electromagnet is usually made from ...

• a straight, current-carrying wire.

• a current-carrying coil of wire.

• a block of magnetic material.

If unwanted radioactive atoms get onto or into an object, the object has been ...

• irradiated.

• sterilised.

• contaminated.

In general, the further away a galaxy is ...

• the smaller the observed increase in the wavelength of its light.

• the slower it is moving away from us.

• the bigger the observed increase in wavelength of its light.

Which of the following is a way that seat belts reduce the risk of injury to wearers?

• They slow down the wearer more quickly.

• They reduce the total change in momentum of the wearer.

• They reduce the rate of change of momentum of the wearer.

Which of the following is an electrical conductor?

• Silver

• Plastic

• Rubber

• Silicon

An 800 W microwave oven is supplied by a 230 V mains voltage.

What is the rating of the fuse needed?

• 3 A

• 5 A

• 13 A

• 2 A

Which of the following is not evidence that supports the Big Bang theory?

• Variation in gravitational field strength

• The red-shift observed in light reaching Earth from distant galaxies

• Cosmic microwave background radiation

Object A is travelling to the left and collides with the stationary object B.

After the collision, object B moves away to the left.

Which of the following is true of object A's momentum after the collision?

• It is the same as it was before the collision.

• It is lower than it was before the collision.

• It is higher than it was before the collision.

A teapot is stationary on a table.

The teapot exerts a force of 10 N on the table.

What is the reaction force applied to the teapot by the table?

• 0 N

• -10 N

• -20 N

• 5 N

A car with a mass of 1500 kg is travelling at a velocity of 10 m/s when it has to stop suddenly.

What is the decrease in the car's momentum?

• 15 000 kg m/s

• 1500 kg m/s

• 150 kg m/s