Asingle-slit diffraction pattern is formed on a distant screen. if the width of the single slit through which light passes is reduced, what happens to the width of the central bright fringe? assume the angles involved remain small. a. the central bright fringe becomes wider. b. the central bright fringe remains the same size. c. the effect cannot be determined unless the distance between the slit and the screen is known.
d. the central bright fringe becomes narrower.

Animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. reactivate d) a dog is getting hot in the sunlight, so he moves to a shaded area.

Looking at this barometer, is the air pressure high or low? what type of weather would you expect? high, bad low, bad high, good low, good

Rank the automobiles based on the magnitude of the force needed to stop them, from largest to smallest.2000 kg car going 5m/s500 kg car going 20 m/s1000 kg car going20m/s500 kg car going10m/s1000 kg car going10/s4000 kg car going 5m/s 0 0 603