A scientist conducted an experiment to determine how the amount of salt in body of water affects the number of plants that can live in the water. In this experiment the dependent variable is

The car hoist allows the car to be driven onto the platform, after which the rear wheels are raised. if the loading from both rear wheels is 1380 lb, determine the force in the hydraulic cylinder ab. neglect the weight of the platform itself. member bcd is a right-angle bell crank pinned to the ramp at c. the force is positive if in tension, negative if in compression.

Use 4 to 5 complete sentences, explain the concepts of beats and how beats are produces.

Are formed where bumps from two surfaces come into contact ?