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An action potential is when a neuron sends an electrical signal down an axon, away from the cell body (soma). A stimulus is detected by a motor neuron e.g. through mechanoreceptors that detect touch on th...

PV = nRTP =101 kPa = 101 000 PaV =?T= 298 KR = 8.314 J K^-1mol^-1n = 1.5 molV = nRT / P = 1.5 mol x 8.314 J K^-1 mol^-1 x 298 K / 101 000 Pa = 0.0368 m³<...

2000 tonnes H0.7 x 2000 tonnes = mass of iron oxide = 1400 tonnes

A clamp and stand should be used to hold the spring in place. Ensure its parallel to the stand using a ruler, this reduces the effect of random parralax error when measuring extension.Masses should be att...

Rutherford performs the alpha particle scattering experiment. Alpha particles incident on a gold foil in a vaccum are scattered by a range of angles, due to the electrostatic repulsion between the positiv...