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| ՎԷԼԱՏԻՆ
ՍՏՆ ԱՅՆ (Խն
լոյ
1. A source emits 531.62-nm and 531.81-nm light. (a) What
minimum number of grooves is required for a grating that
resolves the two wavelengths in the first-order spectrum?
(b) Determine the slit spacing for a grating 1.31 cm wide
that has the required minimum number of grooves.

the moon affects the earth gravitation ally, causing certain motions of that body and also producing tides in its ocean and atmosphere. the tidal wave in our atmosphere is, however, far too minute to be an effective cause in any known meteorological phenomenon.

explanation:

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer