12. You carry a lost puppy that weighs 30 N up a flight of stairs 10 m high. a) Identify the energy transfer that occurred as you carried the puppy up the stairs.

The step-down transformer gives a current of 10a at 24v if the primary voltage is 240v calculate the 1_primary current 2_the power input 3_the power output

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 are similarities and differences between refraction, reflection, diffraction and absorption?