Please Help No Links A thin, 100 g disk with a diameter of 7.00 cm rotates about an axis through its center with 0.170 J of kinetic energy.

Part A
What is the moment of intertia of the disk?

Part B
What is the speed of a point on the rim?

Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.