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This is an example of an energy consideration problem involving work done in the context of a Hooke's law situation. Firstly draw a diagram to show what's going on. Then recall that the <...
Heat is lost in the fluid through Conduction convection radiation and evaporation. The silvered surfaces reflect infrared rays back into the liquid keeping heat in the fluid reducing heat lost by radiatio...
A transverse wave is a wave where the direction of vibration is perpendicular (90 degrees) to the direction of travel (an example would be a wave in the sea), and a longitudinal wave is a wave where the v...
The resistance of a filament lamp increases as the potential difference increases because the filament becomes hot. The movement of electrons (which is what causes the current) makes the atoms inside the ...
They travel at the same speed (speed of light) in vacuum, and they can both be polarised.
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