Aring, seen from above, is pulled on by three forces. the ring is not moving. how big is the force f

Avehicle accelerates from 0 to 30 m/s in 10 seconds on a straight road

Why is a noble gas different from other elements

Suppose that a cylindrical tank 6 meters high with a radius of 2 meters is filled to the rim with water. the tank is buried so that the top of the tank is 1 meter below ground level. the space above the tank is not filled with water. calculate how much work needs to be done by a pump to pump the water out of the tank up to ground level. (the water weighs 9,800 newtons per cubic meter.)