Top answers

What are quarks?

Quarks are the building blocks of protons and neutrons, as found in the nucleus of atoms. They are as far as we know, fundamental particles, but this could change in the future. There are 6 types, named up, ...
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Answered by Andrew G. • Physics tutor
6423 Views

Explain the process of nuclear fission.

I would start by defining nuclear fission: 'Nuclear fission is the process of splitting up atoms and harnessing the energy from the reaction.' I would then proceed to explain how this occurs: 'Fission happen...
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Answered by Rob S. • Physics tutor
10731 Views

How can an object be at rest without friction?

Friction is a force, and no object can change speed (accelerate/decelerate) without first being acted on by a force. On a frictionless surface (with no other external forces present), there is therefore no f...
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Answered by Tom B. • Physics tutor
18944 Views

How would you explain general relativity?

In basic terms, general relativity is based on Einstein's equivalency principle. It states that in a closed environment, there is no way of distinguishing between the effects of gravity and of a constant acc...
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Answered by Sam C. • Physics tutor
4207 Views

What is the unit frequency is measured in?

Hertz (Hz), or sometimes megahertz if the Hz is very large.
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Answered by Bradley P. • Physics tutor
5962 Views