Light of wavelength 600nm illuminates a diffraction grating. The second-order maximum is at angle 39°. How many lines per millimeter does this grating have?

What are segments of dna that code for a particular trait. a combination of dna and proteins make up what

The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?

A3.9 g aluminum foil ball with a charge of +4.1×10−9 c is suspended on a string in a uniform horizontal e⃗ field. the string deviates to the right and makes an angle of 30∘ with the vertical. part a part complete what information about the e⃗ field can you determine for this situation? what information about the field can you determine for this situation? only the magnitude of e⃗ only the direction of e⃗ both the magnitude and the direction of e⃗ none of the above previous answers correct part b determine the magnitude of the electric field. express your answer with the appropriate units. e e = nothing nothing request answer part c determine the direction of the electric field. determine the direction of the electric field. to the right to the left away from you toward you