Answers a slit has a width of w1 = 4.1 × 10-6 m. when light with a wavelength of λ1 = 527 nm passes through this slit, the width of the central bright fringe on a flat observation screen has a certain value. with the screen kept in the same place, this slit is replaced with a second slit (width w2), and a wavelength of λ2 = 665 nm is used. the width of the central bright fringe on the screen is observed to be unchanged. find w2.

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

Since the energy was not raising the temperature of the water during these segments, what was the energy used to do instead? your answer must include an explanation of what is happening to the molecules.