190 km = __m Can somebody please help me? I don’t know why they put a sophomore in a physics class.

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system

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

Calculate a pendulums frequency of oscillation (in hz) if the pendulum completes one cycle in 0.5s.