Which equations could be used as is or rearranged to calculate for frequency of a wave

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 tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?