Young's double slit experiment is one of the quintessential experiments in physics. the availability of low cost lasers in recent years allows us to perform the double slit experiment rather easily in class. your professor shines a green laser (564 nm) on a double slit with a separation of 0.108 mm. the diffraction pattern shines on the classroom wall 4.0 m away. calculate the fringe separation between the fourth order and central fringe.

Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?

What happens when the number of protons in an atom changes

Auniform electric field exists in the region between two oppositely charged plane parallel plates separated by a distance of 1.60 cm . a proton is released from rest at the surface of the positively charged plate and strikes the surface of the opposite plate in a time interval of 3.20×10-6 s. 1-find the magnitude of the electric field. use 1.60×10-19c for the magnitude of the charge on an electron and 1.67×10-27kg for the mass of a proton 2-find the speed of the proton when it strikes the negatively charged plate