A kettle heats 0.80 kg of water from 20 °C to 100 °C.
The specific heat capacity of water is 4200 J/kg °C.
.1
Calculate the energy transferred to the water.
[3 marks].2
What is the internal energy of the water?
[1 mark]OCR Gateway GCSE Combined Science November 2021 Paper 5
5 questions on this paper's topics
23:001 of 5
The diagram shows a circuit.
.1
Name component X.
[1 mark].2
The lamp is off. Explain why the lamp lights when the switch is closed.
[2 marks].3
When the switch is closed, the reading on X is 0.20 A.
Calculate the charge that flows through the lamp in 60 s.
[2 marks]A runner completes one lap of a 400 m track in 80 s.
.1
Calculate the runner's average speed.
[2 marks].2
What is a typical walking speed?
[1 mark]A spring has an unstretched length of 12.0 cm. When a force is applied, its length becomes 15.0 cm. The spring constant is 30 N/m.
.1
Calculate the extension of the spring in metres.
[2 marks].2
Calculate the force applied to the spring.
[2 marks]A student has a mass of 50 kg.
Gravitational field strength = 9.8 N/kg.
.1
Calculate the weight of the student.
[2 marks].2
Which of these is a vector quantity?
[1 mark].3
Name an instrument that can be used to measure weight.
[1 mark]