Adiffraction grating with 4000 lines/cm is illuminated by light from the sun. the solar spectrum is spread out on a white wall across the room. (a) at what angle from the center line does blue light (400 nm) appear? (b) at what angle from the center line does red light (650 nm) appear?

Which fators influence ocean currents

If it takes a planet 2.8 x 10^8 s to orbit a star with a mass of 6.2 x 10^30 kg what is the average distance between the planet and the star

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.