Amonochromatic light passes through a narrow slit and forms a diffraction pattern on a screen behind the slit. as the slit width increases, the diffraction pattern:
o becomes dimmer.
o shrinks with all the fringes getting narrower.
o spreads out with all the fringes getting alternately wider and then narrower.
o remains unchanged.
o spreads out with all the fringes getting wider.

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.

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?