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Give an example of a transverse and longitudinal wave.

Transverse wave - electromagnetic wave, waves on a string Longitudinal wave - sound wave, seismic P-waves
DM
Answered by Daniel M. • Physics tutor
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What is a moment?

A moment is the product of a force and its perpendicular distance from a pivot in a rotational system. Moment = F x D
BC
Answered by Benn C. • Physics tutor
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(IGCSE, Jan 2013, q8 adapted) The astronaut David Scott dropped a hammer and a feather from rest, at the same time and from the same height on the moon. The hammer and the feather landed at the same time. Why?

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 moon, which means w...
NK
Answered by Nadya K. • Physics tutor
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Explain the resistance of and electrical component and what affects its value in a wire.

Resistance primarily is 'how difficult it is for an electron to travel through a material'. When the electron travels through a material, it collides with ions which causes it to lose energy with each collis...
JH
Answered by John H. • Physics tutor
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Explain how the evaporation of a liquid causes the temperature of the remaining liquid to decrease.

(Explain within the lesson)
FM
Answered by Finlay M. • Physics tutor
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