A steam turbine governor regulates rotational speed using negative feedback to control the speed of a steam engine. Steam spins the governor and when it reaches a certain speed, the balls rise to turn off the steam valve. The valve reopens when the governor's rotational speed declines to a certain speed. Suppose a steam governor has two balls that are each rotating with a tangential speed of 3.5 m/s. The balls are 16 cm from the rotation axis, and the centripetal force on each ball is 712 N.
What is the mass of one of the balls in kg?
Answer is assumed to be in kg. Do not add units. Give your answer to 2 decimal places.

Asimply means that over time there was some sort of change.

The discovery that the universe appears to be expanding led to a widely accepted theory called a.) the big bang theory b.) the doppler effect c.) hubble’s law d.) solar nebular theory e.) the seyfert theory

Suppose water is leaking from a tank through a circular hole of area ah at its bottom. when water leaks through a hole, friction and contraction of the stream near the hole reduce the volume of water leaving the tank per second to cah 2gh , where c (0 < c < 1) is an empirical constant. a tank in the form of a right-circular cone standing on end, vertex down, is leaking water through a circular hole in its bottom. (assume the removed apex of the cone is of negligible height and volume.) (a) suppose the tank is 20 feet high and has radius 8 feet and the circular hole has radius 2 inches. the differential equation governing the height h in feet of water leaking from a tank after t seconds is dh dt = − 5 6h3/2 . if the height of the water is initially 8 feet, how long will it take the tank to empty? (round your answer to two decimal places.)