<< David is swinging his 0.5 m long sling and exerting a centripetal force of 1,250 N. Soon he will hurl the 250 g
rock in the sling at Goliath. What is the velocity of the
rock as it leaves the sling?

What color of light must blue light mix with to create white light? a. yellow b. white c. blue d. green

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.