A man swings a bucket on a 120-cm rope with a tangential speed of 4.5 m/s. If the magnitude of the centripetal force is 25 N, what is the bucket’s mass?

The air that we breath is made mostly of which gaseous molecule

What is special about a dc circuit ?

An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2