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INSTRUCTIONS ● Answer all questions. ● Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs. ● Write your name, centre number and candidate number in the boxes at the top of the page. ● Write your answer to each question in the space provided. ● Do not use an erasable pen or correction fluid. ● Do not write on any bar codes. ● You may use a calculator. ● You should show all your working and use appropriate units. ● Take the weight of 1.0 kg to be 10 N (acceleration of free fall = 10 m / s2).
INFORMATION ● The total mark for this paper is 80. ● The number of marks for each question or part question is shown in brackets [ ].
1 Fig. 1.1 shows a box dropped from an aeroplane. The box contains supplies. A parachute is attached to the box. The parachute is opened when the time is 6.0 s.
box containingsupplies
parachute
Fig. 1.1
The graph in Fig. 1.2 shows the vertical speed of the box as it falls.
4 Fig. 4.1 shows an outline of the main parts of a geothermal power station used to generate electricity. Some parts of the power station are labelled.
coolingstation
electricalenergy
steam
steamA
B
production well
injection well
waterhot water / steam hot rocks
Fig. 4.1 (Not to scale)
(a) State the names of the parts of the power station labelled A and B.
part A ........................................................................................................................................
part B ........................................................................................................................................[2]
(b) Geothermal energy is one source of renewable energy.
(a) Give the label letter P, Q, R, S or T for the arrow which represents:
1. the amplitude of the wave .............................................. [1]
2. the wavelength of the wave. .......................................... [1]
(b) A student stands next to a pond and observes water waves on its surface. She counts 12 complete waves passing a point in the pond in a time of 8.0 s.
Calculate the frequency of the water waves.
frequency = .................................................... Hz [3]
(c) Fig. 7.1 shows a transverse wave. Describe the difference between transverse and longitudinal waves.
(b) A student uses two bar magnets to create a uniform magnetic field. He places a current-carrying wire at right angles to the magnetic field, as shown in Fig. 8.2.
N S
bar magnet bar magnet
separationof poles
uniformmagnetic field
current-carryingwire
Fig. 8.2
There is a force on the current-carrying wire.
(i) The student wants to reverse the direction of the force on the wire.
State one change that reverses the direction of the force on the wire.
10 A student uses a laptop computer. The student notices that the cable connecting the power adapter for a laptop to the mains electricity supply is damaged as shown in Fig. 10.1.
Fig. 10.1
(a) State the hazard of using mains equipment with damaged insulation.
11 Carbon-12 is a stable isotope of carbon. Its nuclide notation is shown in Fig. 11.1.
Carbon-14 is an unstable isotope of carbon. Its nuclide notation is shown in Fig. 11.2.
162C 1
64C
Fig. 11.1 Fig. 11.2
(a) Determine the numbers of electrons, protons and neutrons in an atom of carbon-12 and the numbers of electrons, protons and neutrons in an atom of carbon-14.
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