Which of the following describe an electric motor A. Can be powered by a hand crank
B. Uses the interaction between permanent magnets to make things
move
C. Is found in many appliances with moving parts, like a vacuum
cleaner or a blender
D. Changes electrical energy to mechanical energy

power out to power in less than 100%

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.