Answers to Physics Questions

Physics, cosmology, astrophysics, electricity, energy, forces, gravity, light and maths...

03 April 2011

What is the most efficient way to heat water? Should we just head up what we need as and when we need it, or leave a...

27 March 2011

Where on the Earth would you experience the strongest and weakest gravity?

13 March 2011

Why don't potato peelers need sharpening, when all other knives need regular attention to avoid becoming blunt?

25 February 2011

And what's Stephen Hawking's explanation?

20 February 2011

How fast do I have to go to be lifted off the ground?