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Describe how the forces change on a parachutist while they fall.

It is important to remember that there are four main concepts to keep in mind while thinking about the parachutist. To remember them, it might be helpful to use the acronym GADE: Gravity, Acceleration, Drag,...
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Answered by Nicholas D. • Physics tutor
21533 Views

In terms of ecological pyramids, how can pyramids of numbers sometimes be a different shape from pyramids of biomass, even for the same food chain?

Ecological pyramids are a way of visualizing a food chain, either with the mass of organisms or the total number of the population of organims at each stage of the food chain. Pyramids of biomass are always ...
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Answered by Robynne N. • Biology tutor
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Solve the equation for x: 3x^2 -5 = 22

x =3 or x= -3
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Answered by Rachel M. • Maths tutor
3942 Views

GCSE (General Approach)

My understanding of the GCSE Religious Studies criteria is that the pupil is required to demonstrate three key areas of skill: a knowledge set on at least two world religions, a personal opinion on the set o...
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GCSE: I don't understand how to rationalise denominators

First, I would make sure the pupil understands why rationalising fractions is necessary. Then I would acquaint them with the relevant vocabulary so they can express their thought process better and understan...
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Answered by Cora A. • Maths tutor
4093 Views