Top answers

What is the difference between reflection, refraction and diffraction?

These are all properties of waves and their definitions are useful to remember for exams. It can also be helpful to draw diagrams of each to help you to remember the difference. On the diagram it is useful t...
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Answered by Anna K. • Physics tutor
13005 Views

Why do capacitors dis/charge suddenly and then slow down?

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 keeps filling with e...
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Answered by Shail B. • Physics tutor
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Name an experiment proving that light is wave and one that is proving that light consists of particles.

wave: interference experiments e.g. double slit experiment particles: photo-electric effect
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Answered by Evita G. • Physics tutor
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A ball is kicked from a tower (50m) at a speed of 20m/s. How far away does the ball hit the ground?

time is equal to time in free fall i.e. 50m=0.5 g t^2 -> t=root(50m*2/g)=1.019s horizontal distance is then t v= 1.019s 20m/s=20.38m
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Answered by Evita G. • Physics tutor
4357 Views

What is an equipotential in an electric/gravitational field?

Equipotentials are lines of constant potential. In radial fields they join points of equal potential and are perpendicular to the field lines. They are concentric spherical surfaces about the centre of the b...
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Answered by Chris D. • Physics tutor
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