Hello I need osme help with these two problems. I was told the ansers but do not undersatnd how the answers were gotten. 1. The power dissipated in lifting a 2.0 kg ball vertically at 3.0m/s equals what? The answer is 59 W. ALl I know is that power equals Work/ delta T but there is no time for this one. 2. Increasing the orbital radius of a satellite by a factor of 2 requires its period to change by a factor of what? For thi I know R^3/T2=R^4/T^2. I would appreciate any help.