The yellow light from a helium discharge tube has a wavelength of 587.5 nm. When this light shines on a certain diffraction grating, it produces a first-order principal maximum (m = 1) at an angle of 1.250°. Calculate the slit spacing for this grating.

Two vectors are shown. which statement best compares the vectors? vector x has greater magnitude than vector y. vector y has greater magnitude than vector x. the vectors have the same displacement. the vectors have the same direction.

Determine the maximum r-value of the polar equation r =3+3 cos 0

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.