An 18.4-kg child is riding on a merry-go-round with a radius of 6.7 m and a speed of 14.44 m/s. calculate the centripetal acceleration of the child.

If the new moon happens on january 15th, what shape will it be on february 6th?

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:

Metals are good conductors of electricity because they