Промінь падає під кутом 30° на поверхню зникала Чому дорівнює кут між падаючим і відбитим променем?Як він змінюється якщо кут падіння збільшиться на 15°?Зробіть малюнок

Explain in physical terms how a microwave oven works. what would happen when you put a conductor in the microwave oven? explain.

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?

Avector of magnitude 2 cannot be added to a vector of magnitude 3 so that the magnitude of the resultant is a. zero b. 1 c. 3 d. 5 e. 7