A dog walks 21 m north and then walks 35 m west to bury a bone. What is the displacement of the dog?

Can you match these to the correct definition

Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.

When solid surfaces slide over each other the kind of friction that occurs is called friction