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An isotope of 238,92-Uranium decays into a stable isotope of 206,82-Lead through a series of alpha and beta decays, how many of each does it go through?

This is a good example of where simplification can make an otherwise tricky question a lot easier. It is easy to get confused trying to work out different isotopes and the extra products of the decays, but a...
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Answered by Nathan M. • Physics tutor
6103 Views

What is the difference between "est", "es" and "et"?

We can classify these words in two categories, verbs for "est" and "es" which are the conjugaison of the verbe "être" = "be". "est" is use when the subject c...
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Answered by Lucile O. • French tutor
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Explain why the average and marginal revenue curves for a perfectly competitive firm are horizontal while those of a monopoly slope downwards.

The average revenue curve for a perfectly competitive firm is horizontal due to the fact that it faces perfectly elastic demand at the market determined price. This is because there is a significant amount o...
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Answered by James S. • Economics tutor
50829 Views

Find the binomial expansion of (2+x)^3

We know thst the binomial expansion formula is (1+x) n = 1+nx +(n)(n-1)(x 2 )/2! ...etc Thus we want to rearrange the expression we are given into the form (1+x) n so that we can apply the formula to it. Tak...
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Answered by Laura V. • Maths tutor
11408 Views

What are transnational corporations and why do they grow?

Also known as MNCs (Multinational Companies) these are large businesses that operate in a number of countries. They often separate their production between various locations, or have their different division...
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Answered by Dee A. • Geography tutor
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