The newest 20 of 41 written questions. Open one to see it on the real paper.
State the name of the energy store that decreases.
See it on the paper →State the name of an energy store that increases.
See it on the paper →A small stone falls through the liquid in the measuring cylinder before coming to rest on the bottom. Explain why work is done by the stone as it falls through the liquid.
See it on the paper →Describe one advantage of using geothermal sources to produce useful energy.
See it on the paper →The builder applies a force of 40 N at the top end of the rod in the direction of the arrow. Calculate the work done moving the top end of the rod a distance of 2.0 × 10 –2 m. work done = J
See it on the paper →State the name of the energy store that decreases as the hole is made.
See it on the paper →State the name of the energy store that increases as the hole is made.
See it on the paper →A children’s toy contains a ball and a spring inside a metal tube as shown in Fig. 4.1. metal tube spring ball rod Fig. 4.1 The rod is pulled back a distance R and then released. This pushes the ball out of the tube as shown in Fig. 4.2. R rod is pulled back ball is pushed when rod is released Fig. 4.2 The released bal...
See it on the paper →Explain how the movement of water at Y is used to produce electrical power in the machine at Z.
See it on the paper →Acceleration a, force F and mass m are related by the equation: a = F m Determine a value for F and a value for m that combine to produce an acceleration a of 2.0 m / s 2 . State the units of force and mass in your answer. F = unit
See it on the paper →the height of the ball above the pool at the time that it is thrown upwards height above the pool = m
See it on the paper →the maximum height above the pool that is reached by the ball maximum height = m
See it on the paper →the total time taken for the ball to land in the pool. time taken = s
See it on the paper →Calculate the average speed of the ball as it falls from its maximum height. average speed = m / s
See it on the paper →Energy is transferred from the energy store in the body of the builder by .
See it on the paper →A weight of 12.0 N is placed at the end of a beam as shown in Fig. 7.1. 0.2 m 0.8 m beam block X weight 12.0 N pivot Fig. 7.1 Calculate the mass in kg of block X that balances the beam. Assume that the beam has negligible mass. Gravitational field strength g = 10 N / kg. mass = kg
See it on the paper →Cars in the future may be powered by hydrogen-oxygen fuel cells. Describe one advantage of using hydrogen-oxygen fuel cells instead of petrol engines in cars.
See it on the paper →As the mass moves down just after being released, energy is transferred from the energy store.
See it on the paper →After a few moments, the elastic band starts to stretch and the mass slows down as it falls. When the elastic band is stretching, energy is transferred to the energy store and also to the energy store.
See it on the paper →Energy is conserved when it is transferred between stores. 100 J of energy is transferred from the store in (a)(i). Determine the total amount of energy gained by the stores in (a)(ii).
See it on the paper →Candidates with good mathematical skills did well on this question. In general, they set out their equation to show a clockwise force × distance equal to an anticlockwise force × distance, substituting the numbers underneath. The more able candidates also realised that the mass needed to be converted to a force using the value for gravitational field strength provided.
— Examiner report, October/November 2023, 5129/21 Q7(a) (Cambridge)
Only a few candidates knew that the only product of the hydrogen-oxygen fuel cell is water. Many candidates made vague references to pollution and carbon dioxide which were not credited.
— Examiner report, October/November 2023, 5129/21 Q12(c) (Cambridge)
The energy transfer between stores is still relatively new to the syllabus. Candidates need to be familiar with the names of the energy stores listed in this part of the syllabus.
— Examiner report, October/November 2023, 5129/22 Q7(a)(i) (Cambridge)
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