An 880n box is pushed across a level floor for a distance of 5.0m with a force of 440n. how much work was done on the box

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?

Estimate of the number of stars in our galaxy

The average atmospheric pressure on earth is approximated as a function of altitude by the relation patm = 101.325 (1 − 0.02256z)5.256, where patm is the atmospheric pressure in kpa, and z is the altitude in km with z = 0 at sea level. determine the approximate atmospheric pressures at atlanta (z = 306 m), denver (z = 1610 m), mexico city (z = 2309 m), and the top of mount everest (z = 8848 m).