A roller coaster starts moving with 121,500 N of force in 3 seconds. How much impulse is generated? How much force is experienced by a running back if he's tackled with 228.8 N. s of impulse in 0.04 seconds?​

In what direction does the medium move relative to the direction of the wave? explain.

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

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.