A blade of ceiling fan with radius 0.5 m is rotating with initial angular velocity of 0.20 rev sl. The angular acceleration of the blades is 0.80 rev s?. In 5.0 s.
determine
(a)
the final angular velocity made by the blade.

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?

Contains chemical energy. a. heat b. light c. natural gas

Which of the following statements correctly describes a transformer?