A microwave oven produces a heat of 900 J by utilizing 1200 J of electrical energy. What is the efficiency of the microwave oven?

The slope of a velocity time graph over any interval of time gives the during that interval

Which levels of government establish and implement educational requirements for minors

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?