100 gm of water at 0 °C is mixed with an equal mass of water at 80 °C. Calculate the resultant increase in entropy.

As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road is 100) a) static friction. b) kinetic friction. c) a combination of static and kinetic friction. d) neither static nor kinetic friction, but some other type of friction. e) it is impossible to tell what type of friction acts in this situation.

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter