N2O is nitrous oxide becuase of the nitrogen and oxygen
Answer:

Explanation:
As we know that the position of maximum intensity on the screen is given as

here we know that
= wavelength
L = distance of the screen
d = distance between two slits
now we know that the position of 8th maximum intensity is same as that of 9th maximum on the screen
so we have

so here we have


A: geologist
b: physical science
c: space science
d: ecologist
2 minutes is 120 seconds, so if you were finding vibrations per minute, it would be 60 times a minute.
The answer is b no problem