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How does the photoelectric effect provide evidence for a particulate nature of electromagnetic radiation?

The photoelectric effect is light incident on a metal’s surface causing the spontaneous emission of electrons. The classical wave theory of electromagnetic radiation predicted the kinetic energy of emitted e...
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Answered by Stefano A. • Physics tutor
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Describe the similarities and differences between RNA and DNA

Similarities: both encode genetic information; both can bind nitrogenous bases adenine, guanine and cytosine; both are polar and have a 5' end and a 3' endDifferences: RNA binds uracil, whereas DNA binds thy...
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Answered by Conlan D. • Biology tutor
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how to write an essay?

The most important thing to think about when writing an essay, is to make sure you understand the wording of the question, rephrase the question in a more simple term or break it down into parts, to ensure y...
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What are the causes of the French Revolution?

There are multiple causes of the revolution and it is a subject of endless controversy. One major reason for the revolution is that France was following in the footsteps of the Americans and rebelling agains...
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Answered by Forida P. • History tutor
4581 Views

Use logarithms to solve the equation 2^(n-3) = 18000, giving your answer correct to 3 significant figures.

To find the answer first you have to take a log of both sides. I am going to use log to the base 2 for my example - but any base will work as long as they are the same on both sides of the equals sign log(2 ...
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Answered by Emily J. • Maths tutor
7338 Views