A two-slit Fraunhofer interference-diffraction pattern is observed with light of wavelength 660 nm. The slits have widths of 0.01 mm and are separated by 0.24 mm. How many bright fringes will be seen in the central diffraction maximum

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.

so easy. just google the electromagnetic waves and it’ll pop up.

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.