Which describes Hans Oersteds work with electricity and magnetism

Argon is adiabatically compressed from an initial volume of 16 liters to a final volume of 2 liters. by what factor do the following quantities change? do they increase or decrease? (a) the rms speed (b) the thermal energy of the gas (c) the molar specific heat cv (d) the pressure

What will a positive and a negative charge do if they are separated from each other?

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?