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?

On your wedding day your lover gives you a gold ring of mass 3.67 g. 48 years later its mass is 3.44 g. on the average how many atoms were abrated from the ring during each second of your marriage? the atomic mass of gold is 197 u. don't enter units