Consider the pattern of interference fringes seen on a distant screen, due to two slits separated by a distance d. Suppose that the two slits were replaced by 20 slits, with the same spacing d between adjacent slits. Of the following quantities, indicate whether each would increase, decrease, or stay the same.

a. The number of visible fringes. 1. Same
b. The width of each fringe. 2. Increases
c. The spacing between fringe peaks. 3. Decreases
d. The maximum brightness of each fringe.

Two particles of masses m and 2m are placed on a smooth horizontal table. a string, which joins these two masses, hangs over the edge supporting a pulley, which suspends a particle of mass 3m.the pulley has negligible mass. the two parts of the string on the table are parallel and perpendicular to the edge of the table. the hanging parts of the string are vertical. find the acceleration of the particle of mass 3m.

Ways that industry and agriculture use physical properties to separate substances

Asilver dollar is dropped from the top of a building that is 1324 feet tall. use the position function below for free-falling objects. s(t) = −16t2 + v0t + s0 (a) determine the position and velocity functions for the coin. s(t) = v(t) = (b) determine the average velocity on the interval [1, 2]. ft/s (c) find the instantaneous velocities when t = 1 second and t = 2 seconds. v(1) = ft/s v(2) = ft/s (d) find the time required for the coin to reach the ground level. (round your answer to three decimal places.) t = s (e) find the velocity of the coin at impact. (round your answer to three decimal places.) ft/s