Describe the structure of an alpha particle
An alpha particle is made up of two neutrons and two protons. It is the same as the nucleus of a helium atom.
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All answers ▸Describe the different forces upon a falling object with reference to Newton's first law.
Why do Physicists take multiple readings in experiments?
If a 60kg girl jumps out of a helicoptor, draw diagrams to show the forces (with values) acting on her when a) she is in freefall, b) she is accelerating at half of g (g = 10 m/s^2), c) she is travelling at a constant speed?
Explain the difference between speed and velocity.