Search over 10,000 free study notes

for a capacitor the equations you need to know are:  Q=CV  V=Vin*e^(t/RC) and E=1/2QV (with Q=charge/columbs, C= capacitance/Farads, V=voltage/volts, R=resitance/ohms, Vin=initial voltage when discharging...

By the Law of Conservation of Momentum, Initial Momentum=Final Momentum, in a closed system.

Take movement to the right as + and to the left as -

Therefore equate the...

An alpha particle is made up of two neutrons and two protons. It is the same as the nucleus of a helium atom.

In a vacuum (ie in the absence of air resistance) all things fall with exactly the same acceleration. The reason for this can be easily seen.

An object, with mass ‘m’, falling in a gravitational fi...

The Doppler effect describes the changes in a wave's frequency (or wavelength) as the source of the wave moves towards/ away from the observer (you). You have almost definitely experienced this phenomenon...