What is the definition of light of one year ?​

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.

Convection currents are caused by differences in what two things?

Which of the following list the divisions of the geologic time scale in order from longest to shortest