A laser beam is incident on two slits with a separation of 0.220 mm, and a screen is placed 4.80 m from the slits. If the bright interference fringes on the screen are separated by 1.60 cm, what is the wavelength of the laser light

This problem has been solved! see the answera non-uniform fire escape ladder is 6.0m long whenextended to the icy alley below. it is held at the top by africtionless pivot, and there is neglibible frictional force fromthe icy surface at the bottom. the ladder weighs 250n, and it'scenter of gravity is 2.0m along the ladder from the bottom. amother and child of total weight 750n are on the ladder 1.5m fromthe pivot. the ladder makes an angle θ with the horizontal. find the magnitude and direction ofa) the force exerted by the icy alley on the ladderb) the force exerted by the ladder on the pivotc) do your answers in part a and b depend on the angle?

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

What properties of a moving object are used in determining the object's energy of motion