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Physics
A Level

What is a neutrino?

A neutrino is a fundamental particle of matter, meaning that it has no substructure (it can't be broken down further into components). It has a very low mass, so the gravitational force exerted on it and ...

PC
Answered by Patrick C. Physics tutor
7684 Views

What is a vector?

A quantity may be a scalar (just a magnitude, just a number) or a vector, with magnitude and direction. For example, speed is a measure of how fast something is going, but velocity is a measure of how fas...

PC
Answered by Patrick C. Physics tutor
3120 Views

State and derive Kepler's third law

Kepler's third law states that the square of the period of any planet is proportional to the cube of its orbital radius.To derive it, two equations are required: F=GMm/r^2 and F = mv^2/r. These are Newton...

SB
Answered by Samuel B. Physics tutor
3195 Views

Can you explain the photoelectric effect?

The photoelectric effect is one of the first pieces of experimental evidence of quantum mechanical phenomena. It describes how a material absorbs light and result in emission of electrons. Using a classic...

AH
Answered by Anthony H. Physics tutor
2012 Views

Given that a light ray enters a glass prism at angle of 50 degrees from the normal and is refracted to an angle of 30 degrees from the normal, calculate the speed of light in glass.

Answer: 1.96108ms-1.Snell's law tells us that n1sin(x1)= n2 sin(x2) where x is the angle of a light ray from the normal. Air can be as...

CH
Answered by Charlie H. Physics tutor
3155 Views

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