Why does wearing wellies result in feeling pressure in a puddle, when going barefoot...
Answers to Physics Questions
Physics, cosmology, astrophysics, electricity, energy, forces, gravity, light and maths...
29 May 2011
Why do commercial airplanes land from flights with cold icy surfaces, while some supersonic jets and reentering...
22 May 2011
Is there an optimum level to which you should fill your car's petrol tank so it doesn't just use the excess...