Emanuel rides to school on his skateboard. If he uses 2000 Joules to achieve 1200 Joules of work with the skateboard how efficient is it in percent? *

The radius of a sphere is increasing at a rate of 9 cm/ sec. find the radius of the sphere when the volume and the radius of the sphere are increasing at the same numerical rate.

What was the purpose of the apollo program? to put a man in orbit to launch a spy satellite to launch a space station to put man on the moon

What is the specific heat of wood ?