An electron in a mercury atom changes from energy level b to energy level f when the atom absorbs a single photon. Classify the absorbed photon as one of the types of electromagnetic radiation listed in the electromagnetic spectrum, showing your work.

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.

Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

The force it would take to accelerate an 900-kg car at the rate of 6m/s2