Ateacher does 140 j of work in 20 s. how much power in watts did he use? show your work.

Rank the torques on the five doors shown in the figure above from least to greatest. note that the magnitude of all the forces is the same

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.

At what time would the magnitude of the velocity reach 36.00 km/hr