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Rearranging formulae

Rearrange 1/u + 1/v = 1/f

to make u the subject of the formula. Give your answer in its simplest form.

There are a number of ways to approach this problem.

Answered by Robert S. • Maths tutor

12448 Views

Discuss whether a reduction in taxation will always increase a country’s economic growth rate.

Answers should discuss role of different forms of taxation e.g., income tax, corporation tax, VAT.

Better answers will evaluate the potential limitations, and cases in which a reducation ...

Answered by Andrew L. • Economics tutor

4341 Views

Calculate the length of a 120m (as measured by the astronaut) spaceship travelling at 0.85c as measured by a stationary observer

The length of the spaceship of 120m was measured at rest relative to the spaceship so we will take that as the proper length, dennoted L_proper
We first calculate the Lorentz factor:
Ɣ...

Answered by Kerr M. • Physics tutor

3854 Views

Differentiate The Following function

Find dy/dx where y = (x²+7)^1/2
=> 1/2(x²+7)^-1/2 * d/dx(x²+7) By the chain rule
=> 1/2(x²+7)^-1/2 * 2x
=>...

Answered by Kerr M. • Maths tutor

7112 Views

Comment on whether an increase in the rate of interest would reduce investment.

This question can be split up into 2 parts. What it is asking for firstly is an outline of what theory says should happen. As the question starts with the word comment, the second part will involve som...

Answered by Henry T. • Economics tutor

3264 Views