0654_2017_MJ_QP_12_Phys

28.hich diagram shows the distance-time graph for an object moving with constant speed?

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29.On Earth an astronaut has a mass of 80 kg and weighs 800 N.

In deep space the gravitational field is very weak.

What is the mass and what is the weight of the astronaut in deep space?

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30.Which man does the most work in lifting the boxes and which man produces the greatest power?

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31.What happens to the molecules of the gas?

• They contract.

• They expand.

• They move more quickly.

• They move more slowly.

32.Which process transfers thermal energy from the heating element to the bread?

• conduction

• convection

• evaporation

• radiation

33.Which row gives the amplitude of the wave and the frequency of the wave?

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34.The diagram shows a ray of light in air entering and passing through a glass block.

Which labelled arrow shows the direction of the ray after it leaves the glass block?

• A

• B

• C

• D

35.What does astronaut 2 hear compared with the sound heard if they were working on Earth?

• a louder sound

• a quieter sound

• a sound of the same loudness

• no sound at all

36.Electromagnetic waves are used for different applications.

Which row gives two waves in order of increasing wavelength, with their applications?

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37.Which material is used for the core of an electromagnet?

• aluminium

• copper

• iron

• steel