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Physics
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Why is the sky blue?

The colour of the sky comes from sunlight scattering off of the air molecules (and to your eyes). Blue light gets scattered more than red light because it has a shorter wavelength, and so the light yo...

AP
Answered by Alex P. Physics tutor
9166 Views

If v = 10, a = 2 and t = 4, what is u

v = u+at

u=v-at

u=10 - (4*2)

u=2

NC
Answered by Nicholas C. Physics tutor
4007 Views

How do I find the half-life of radioactive isotope?

The half-life of a radioactive isotope is the time taken for half of the atoms in a given sample of the isotope to decay. Radioactivity is random and so, half-life is the average time taken for a larg...

JS
Answered by Joe S. Physics tutor
17222 Views

How does a thermal nuclear reactor work?

The thermal nuclear reactor is one of many systems used to...

JA
Answered by James A. Physics tutor
12612 Views

Show Maxwell's equations in free space satisfy the wave equation

Maxwell's equations in free space:

∇ . E 

DD
Answered by Dojcin D. Physics tutor
7426 Views

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