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From the question asked, we need to identify the key bits of information.

Firstly, we are asked to find the de Broglie wavelength, so we write down the de Broglie relation:

lambda = h/p

First, find the formula for the time taken, t, for the projectile to travel the distance. Using the fact that the projectile reaches a velocity of zero at a time of 0.5t when at its maximum height and acc...

We start off by working out all the forces acting on the person and they're parachute, because they are joined together they can be considered as one object. We know the wind resistance and the only other...

A magnetic field

a) The governing equation here is Power = current x voltage or P=IV. using this formula, 1,800 = I x 230 => I=1800/230 = 7.83 A (3sf) b) as watts is equal to joules/seconds, we can find the energy in j...