A 120-gram bead is released from rest at point O along a frictionless wire in the shape of a semicircle of radius 0.6 m. What is the change in kinetic energy of the bead as it travels from O to P?

answer; i believe that the correct answer is (d) a very small amount of mass

well, you would divide 135 by 33 to get your answer. then that is how many seconds it would take. boardman should fly about 132 m or 4.090909090909091 seconds.

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

i already answered it by 34/s