7 1. How many Newtons are there in 56 Kg m/s2 ? Why? 2. A force of 150 N acts on the block at the angle shown in the diagram. The block moves a horizontal distance of 30.0 m. How much work is done by the applied force?Show your calculations: 0 30 1

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?

A4.0-cm tall light bulb is placed a distance of 32.0 cm from a concave mirror having a focal length of 16.0 cm. determine the image distance

Heat engine absorbs 2 500 j of heat from a hot reservoir and expels 1 000 j to a cold reservoir. when it is run in reverse, with the same reservoirs, the engine pumps 2 500 j of heat to the hot reservoir, requiring 1 500 j of work to do so. find the ratio of the work done by the heat engine to the work done by the pump. is the heat engine reversible