What is the width of the central maximum on a screen 2.0 m behind the slit?

A 0.50-mm-wide slit is illuminated by light of wavelength 500 nm. What is the width of the central maximum on a screen 2.0 m behind the slit? Please answer in mm. 3 Answers The halfwidth is the position of the 1st diffraction minimum, solved as follows: Θ = arcsin(m*lambda/(d)) = 1.00000016666674E-3 rad, 5.72957890623833E-2 deg y

How much work does gravity do on the book?

A 1.7kg book is lying on a 0.80m -high table. You pick it up and place it on a bookshelf 2.3m above the floor. A) During this process, how much work does gravity do on the book? B) During this process, how much work does your hand do on the book? Answer (A) The expression