A solid object weighs 15.70 N in air. When it is suspended from a scale and submerged in water, the scale reads 5.30 N. Find the density of the object. (Use 1000.0 kg/m3 for the water density.) (in kg/m3) help fast

Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.

The ozone hole appears in antarctica during

Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.