In an experiment conducted using the young's double-slit apparatus, the separation between the slits is 20 µm. a first-order constructive interference fringe appears at an angle of 2.5o from the zeroth order (central) fringe.
a. what wavelength of light is used in the experiment?
b. at what angle would the fourth-order (m = 4) bright fringe appear?
c. at what angle would the fourth-order (m=4) dark fringe appear?

Abar magnet cut in half will form a total ofpoles. a)fourb)eightc)two

1which body contains the majority of the mass in the solar system earth jupiter the moon the sun 2 what keeps the objects in the solar system such as planets orbiting around the sun the force of gravity the galaxy exerts on all objects within it including the solar system the great distance between the sun and the planets the sun's nuclear fusion which acts on each object the gravitational force between the sun and each object in the solar system

Athird point charge q3 is now positioned halfway between q1 and q2. the net force on q2 now has a magnitude of f2,net = 5.861 n and points away from q1 and q3. what is the value (sign and magnitude) of the charge q3?