The power in an electrical circuit is given by the equation p= rr, where /is the current flowing through the circuit and ris the resistance of the circuit. what is the power in a circuit that has a current of 12 amps and a resistance of 100 ohms? a. 144 watts b. 8.3 watts c. 1200 watts d. 14,400 watts

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