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X-Rays are a form of electromagnetic radiation similar to gamma radiation except X-Rays are produced when an electron is slowed down from a high velocity and gamma waves are produced from radioactive m...
A pilot is capable of flying a plane with mass 6500kg, in a horizontal circle of radius r, at a constant speed of 75m/s. This is achieved by flying the jet with its wings at 35° to the horizontal. Calc...
Capacitors are made up of two plates (& so the symbol) which you can imagine as 'boxes' of opposite polarity and are seperated with insulation.
As capacitors charge, the negative box...
wave: interference experiments e.g. double slit experiment
particles: photo-electric effect
time is equal to time in free fall i.e. 50m=0.5gt^2 -> t=root(50m*2/g)=1.019s
horizontal distance is then tv= 1.019s20m/s=20.38m
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