Find the amount of work done in vertically lifting a steel beam of mass 600. kg at uniform speed through a distance of 38.0 m.

What is meant by the statement" the melting poin of glycerine is 13 degree celsius

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.