A 0.25kg rock tied to a string is traveling at a constant speed of 4 m/s in a circle of radius 1.5 m. Calculate the magnitude of the centripetal force of the rock. What is the
direction of the acceleration?

Gunpowder residue is most likely to show up where on a shooters hands

Gasoline comes from petroleum, which is made from ancient living things. petroleum, therefore, contains a type of energy. a. heat b. nuclear c. biological d. chemical potential

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.