In a young's double-slit experiment, a thin sheet of mica is placed over one of the two slits. as a result, the center of the fringe pattern (on the screen) shifts so that the center is now occupied by what was the30th dark band. the wavelength of the light in this experiment is 480 nm and the index of the mica is 1.60. the mica thickness is:

Awoman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. the book has a mass of m = 1.8 kg and the coefficient of static friction between her hand and the book is μs = 0.67. no attempt 50% part (a) what is the weight of the book, fgb in newtons?

The buildup of charges on an object is called

Which statements describe how a machine can make work easier? check all that apply. it can put out more force than the input force by decreasing the distance through which force is applied. it can increase the amount of work performed if the output force is in the same direction as the input force. it can apply a force to an object in a different direction than the force applied to the machine. it can increase the distance through which a force acts by exerting less force than was used on it. it can exert a greater force through a greater distance than the force used on the machine.