Light of wavelength λ = 480 nm is incident upon two thin slits that are separated by a distance d = 25 μm. The light hits a screen L = 1.3 m from the screen. It is observed that at a point y = 3.6 mm from the central maximum the intensity of the light is I = 65 W/m2.

Suppose that a comet that was seen in 563 a. d. by chinese astronomers was spotted again in year 1951. assume the time between observations is the period of the comet and take its eccentricity as 0.986. what are (a) the semimajor axis of the comet's orbit and (b) its greatest distance from the sun?

More solar radiation is absorbed by earth’s surface than by

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2