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What is the force on a moving charged particle in a magnetic field, and why is no work done by this force when it accelerates the particle?

A particle with electric charge q , mass m and velocity v in a constant magnetic field B experiences a force due to the field: F = q v X B The ' X ' ( cross-product ) means that the force is always at 90° ( ...
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Answered by Rich P. • Physics tutor
13595 Views

What is Pythagoras's theorem?

For any right-angled triangle, the square of the hypotenuse (the side opposite the right angle) is the sum of the square of the remaining two sides.
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Answered by Bhavika M. • Maths tutor
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How can I help you get in to medical school?

I recently got in to medical school and I know how hard it is. Taking Bristol med school, for example, there were around 4,500 applicants but only 220-or-so places; it is intensely competitive. I did not go ...
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3801 Views

Where did mitochondria come from?

Mitochondria are a fascinating organelle, which we, as humans, rely on for so much. They are where the electron transport chain occurs, where ADP is converted to ATP with the high-energy bond we utilise ever...
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Answered by Patrick Q. • Biology tutor
5633 Views

So, what actually is a mole?

A mole is simply a unit of measurement of any substance that contains as many atoms as there are in 12 grams of Carbon-12. Why Carbon-12? Carbon-12 is the standard by which we compare the mass of any other m...
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Answered by Patrick Q. • Chemistry tutor
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