5 marksFoundation
A kettle is connected to the 230 V mains supply. The current in the kettle is 8.0 A.
.1Calculate the power of the kettle.
[2 marks] .2The kettle is switched on for 3.0 minutes.
Calculate the energy transferred by the kettle.
[2 marks] .3Which energy store is increased usefully by the kettle?
[1 mark] 4 marksFoundation
An electric kettle has an input power of 2000 W. The useful power output, heating the water, is 1800 W.
.1Calculate the efficiency of the kettle.
[2 marks] .2Calculate the power wasted by the kettle.
[1 mark] .3Give one way energy is wasted by the kettle.
[1 mark] 5 marksFoundation
A student drops a ball of mass 0.20 kg from a height of 1.5 m.
Gravitational field strength = 9.8 N/kg.
.1Which energy store of the ball decreases as it falls?
[1 mark] .2Calculate the energy transferred from this store as the ball falls 1.5 m.
[2 marks] .3Assume all of this energy is transferred to the ball's kinetic store.
Calculate the speed of the ball just before it hits the ground.
[2 marks] 3 marksFoundation
Alpha, beta and gamma are three types of nuclear radiation.
.1Which type of radiation is the most penetrating?
[1 mark] .2Which type of radiation is made of two protons and two neutrons?
[1 mark] .3Give a material that stops beta radiation.
[1 mark] 4 marksFoundation
A student measures a rectangular block. It is 5.0 cm long, 4.0 cm wide and 10.0 cm high. Its mass is 540 g.
.1Calculate the volume of the block.
[1 mark] .2Calculate the density of the block in g/cm³.
[2 marks] .3In which state are the particles close together in a regular pattern?
[1 mark] 