Physics

Questions and Answers

Is there a difference between getting a rotating mass to move compared to a linearly moving mass?

Questions and Answers

I was glad to know why the so-called “eternal motion” could not yet be invented?

Questions and Answers

Do we gain or lose potential energy by increasing our speed?

Questions and Answers

How is it possible that gravitational potential energy is negative?

Questions and Answers

If you get a shock from a wool sweater, how many volts is that?

Questions and Answers

How can I convert my coffee machine from 380 to 220 volts?

Questions and Answers

Where do forces get their energy from?

Questions and Answers

Suppose a 10-kilogram ball and a 100-kilogram ball fall down in a straight line, which ball hits the ground first and why? We...