Which of these is an example of biomass energy? A) a coal burning generator B) a wood burning stove C) a gasoline burning automobile D) an automobile that operates on fuel cells

Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?

Matter that emits no light at any wavelength is called

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?