Daily Practice - 13+ Common Entrance
Common Entrance english, maths and science.
31st January 2013
- 1Science: Full Practice Paper 2
An old-style filament light bulb transfers 100 J of electrical energy. Of this, 20 J is transferred usefully as light, and the rest is wasted as heat. Calculate the energy wasted as heat.
- 2Science: Full Practice Paper 3
State the name given to a chemical reaction that releases heat energy to the surroundings.
- 3Science: Full Practice Paper 4
State the unit used to measure electric current.
- 4Science: Full Practice Paper 5
State the name of the process by which light rays bend as they pass from air into glass.
- 5Science: Full Practice Paper 6
A wave has a wavelength of 2 m and a frequency of 5 Hz. Use wave speed = frequency x wavelength to calculate its speed.
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