Why might someone buy a more expensive CFL intead of an incandescent light bulb ?

What are chlorofluorocarbons and what impact do they have on the atmosphere?

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n