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v = f x lambdatherefore lamba = v/ff=1/Tf = 1/0.2 = 5Hzlambda = 20/5 = 4m

First, clearly set out the information we know: U=0m/s, V=15m/s, T=10s, and identify the value we are wanting to find out: A=? Check that all of these value's units are in meters and seconds only. Recall ...

The word 'flux' can be used in many different contexts, but in general it refers to the amount of 'stuff' passing through a unit area of space per unit time. In the case of light sources, we can measur...

From the equation for speed: Speed = frequency * wavelength 
=> v = 1000 * 0.34 = 340 metres per second 

In an atom, the mass is concentrated in the nucleus which is at the centre of the atom. The nucleus is composed of neutrons and protons, each with a relative mass of 1. By comparison, the third component ...