Which statement is correct about a flashlight battery? a. light energy and heat energy are created by it. b. the total energy of the system decreases. c. its chemical energy is transformed into light energy. d. chemical energy is destroyed when the flashlight stops working.

Which basic property determines a colored light's placement on the spectrum of visible light? a. speed b. frequency c. amplitude d. velocity

A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.

What type of force holds atoms together in a crystal?