Trick question: what is heavier: 1 pound of feathers, 1 pound of bricks, 1 pound of sugar or 1 pound of water

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.

Aparticle moves in a circle 1.50 m in radius . through what angle in radians does it rotate if it moves through an arc length of 2.50m? what is the angle in degrees?