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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 = 1/sqrt(1-(v/c) 2 ) Ɣ...
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Answered by Kerr M. • Physics tutor
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Differentiate The Following function

Find dy/dx where y = (x 2 +7) 1/2 => 1/2(x 2 +7) -1/2 * d/dx(x 2 +7) By the chain rule => 1/2(x 2 +7) -1/2 * 2x => x(x 2 +7) -1/2 Remember that x 1/2 = sqrt(x) and x -1 = 1/x => x/sqrt(x 2 +7)
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Answered by Kerr M. • Maths tutor
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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 some eval...
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Answered by Henry T. • Economics tutor
3584 Views

How can I get top marks on a long 8/9 mark question?

These questions are designed to test your ability to describe/explain/compare in detail. Good answers are able to describe or explain generic terms well, but excellent answers will do this with help of a exa...
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Answered by Bethany R. • Geography tutor
3268 Views

What are some good revision strategies?

Everyone has their own ways of remembering things, but there are some good general points that might help you out. If you just read over things, you might find that you can’t remember much at the end of a se...
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Answered by Gyda F. • Biology tutor
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