Answer:
I think the answer is 80?
Step-by-step explanation:
From the attached graphic:
e = c*h/wavelength therefore,
wavelength = c*h / e
wavelength = 299,792,458 * 6.62606957e-34 / 3.38x10^-19
wavelength = 5.8771e-7 meters
200 * 2/15 = the number of students that didn't read any books. This is 26.6, so 40 is not a good estimate 40 students is 20 percent versus 26 being approximately 13 percent.
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Answer:
C≈43.98cm
Step-by-step explanation:
C=2πr
d=2r
C=πd=π·14≈43.9823cm