Which one is an example of a force pushing downward toward the ground. Group of answer choices

A man pulled weeds in his garden

A woman moved her child from one place to another in a wagon

A bird sat on a telephone wire

A dog tugged on a rope held by a child

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