What angular velocity in revolution per second is needed for a centrifuge to produce an centripetal acceleration of a=9800m/s square at radius 10 cm.

Assuming weightless pulleys and 100% efficiency, what is the minimum input force required to lift a 120 n weight using a single fixed pulley?

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents

Newtons view of arrangement of the universe