Molten iron has a density of 7.0 g/cm. In its solid state, iron has a density of 8.0 g/cm?
Calculate the volume of 10 kg of molten iron.

Volume =​

Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n

Amodel rocket with a mass of 0.212 kg is launched into the air with an initial speed of 84 m/s. how much kinetic energy will the rocket have at a height of 214 m? assume there is no wind resistance. 634 j 303 j

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is