Answer ALL questions.
Some questions must be answered with a cross in a box . If you change your mind about an
answer, put a line through the box and then mark your new answer with a cross .
1 (a) Which of these is a
...
Answer ALL questions.
Some questions must be answered with a cross in a box . If you change your mind about an
answer, put a line through the box and then mark your new answer with a cross .
1 (a) Which of these is a device used to measure force?
(1)
A newton meter
B ruler
C thermometer
D voltmeter
(b) Airbags are safety devices used in cars to protect the driver if there is a crash.
(i) State the formula linking momentum, mass and velocity.
(1)
(ii) A person inside a car has a mass of 72 kg and a velocity of 13 m/s.
Show that the momentum of the person is about 900 kg m/s.
(1)
(iii) The person experiences a crash and comes to rest in 0.29 s.
Calculate the force on the person.
(2)
force = .............................................................. N
https://britishstudentroom-b430a.web.app/ *P70707A0524* Turn over 5
(iv) Which statement explains how airbags protect the driver?
(1)
A increase the force acting on the driver
B increase the time taken for the driver to stop
C increase the kinetic energy store of the driver
D increase the momentum of the driver
(Total for Question 1 = 6 marks)
https://britishstudentroom-b430a.web.app/6 *P70707A0624*
2 (a) Describe the arrangement and motion of particles in a solid.
You may draw a diagram to help your answer.
(3)
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(b) A solid changes state by melting at a certain temperature.
For phosphorus, this change of state occurs at 44 °C.
Sketch how the temperature of a sample of phosphorus changes when it is
heated at a constant rate from –40 °C to 80 °C.
(3)
80
60
40
20
0
–20
–40
Time
Temperature
in °C
(Total for Question 2 = 6 marks)
https://britishstudentroom-b430a.web.app/ *P70707A0724* Turn over 7
3 Nuclear fusion is a process that occurs in the core of stars.
(a) Which is the best description of nuclear fusion?
(1)
A large nucleus splitting into two smaller nuclei
B nucleus emitting an electromagnetic wave
C nucleus releasing a beta particle
D two smaller nuclei joining together to form a larger nucleus
(b) Two nuclei are close together and stationary.
Explain why these nuclei will move apart.
(2)
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(c) Describe the conditions needed for fusion to occur in the core of a star.
(2)
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(Total for Question 3 = 5 marks)
https://britishstudentroom-b430a.web.app/8 *P70707A0824*
4 A student investigates how the strength of the magnetic field from a solenoid
changes with distance from the end of the solenoid.
The diagram shows the solenoid connected to a power sup
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