Amichelson interferometer uses light with a wavelength of 452.446 nm. mirror m2 is slowly moved a distance x, causing exactly 2.2700×102 bright-dark-bright fringe shifts to be observed starting and ending with a central bright spot. if the mirror moved only half the distance, what would the final image be?
a. bright spot.
b. dark spot.
c. in between bright and dark spots.
d. impossible to determine, more information needed.

What are atoms of the same element with varying number of neutrons

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?