Our physics expert picks his top-five equations, plus a scheme to supply US power needs with a bucket of baseballs. Thanks, ...

If we ignore gravity, then the pressures over the inlet and outlet areas are constant. Along a streamline on the centerline, the Bernoulli equation and the one-dimensional ... be found from standard ...

Please don't panic. If you remember the Nernst potential as equation 1, you'll be fine, but you should remember that the number is 61 mV (and not 58 mV) at mammalian body temperature. Nevertheless, ...

So, for a fixed mass of gas at a constant pressure, volume ÷ temperature will remain the same. Boyle’s Law states that for a gas at a constant temperature, pressure × volume is also constant.