Top answers

Physics
A Level

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...

Answered by Shail B. Physics tutor
17629 Views

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

Answered by Evita G. Physics tutor
5347 Views

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=0.5gt^2 -> t=root(50m*2/g)=1.019s

horizontal distance is then tv= 1.019s20m/s=20.38m

Answered by Evita G. Physics tutor
2969 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 ...

Answered by Chris D. Physics tutor
9396 Views

What is damping in Simple Harmonic Motion?

An oscillation is damped if resistive forces are present e.g. air resistance or friction.
The amplitude of the system will decrease over time, as opposed to a free oscillation which is undamped (no r...

Answered by Chris D. Physics tutor
25128 Views

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