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A moment is the product of a force and its perpendicular distance from a pivot in a rotational system. Moment = F x D

The strategy is to consider the horizontal and vertical components of the motion separately, and use the equations of motion in each direction. A few things to remember are: the vertical acceleration is a...

Using F = Gm₁m₂/r^2 and substituting in the values, we get F = 3.57*10^22N.

The photoelectric effect is the emission of electrons on a charged zinc plate, when UV light is shone on it, but not low energy visible light.

This phenomena is caused by the quantisation of light....

Central to this question is an understanding of the difference between an accelerating object and an object travelling at terminal velocity. Firstly, the experiment is carried out on the moo...