Since the index of refraction of the film is larger than
that of air (n = 1) there is an additional phase shift for the reflection in
the soap film.
The formula for constructive interference is
2L = (m+ 0.5)λ/n
Where,
L = thickness of the film
m = order number
λ = wavelength
n = index of refraction = 1.50
Rewriting in terms of λ:
λ = 3L/(m+ 0.5)
The information that λ = 800 nm and λ = 480 nm are
consecutive maximum means that if λ = 800 nm refers to m, then λ = 480 nm refers
to m + 1. Using the m dependence on λ, this implies that:
800 / (m + 1 + 0.5) = 480 / (m + 0.5)
800 (m + 0.5) = 480 (m + 1.5)
800 m + 400 = 480 m + 720
320 m = 320
m = 1
In other words for m = 1 and λ = 800 nm:
L = (m + 0.5)λ/3 = (1.5)*800/3 = 400 nm
Answer:
B. Absorption of thermal energy
Explanation:
Answer:
Not sure which statements were give to you for this question, but the vehicle's acceleration from noon to 2:00 PM was <em>zero</em>, the vehicle had a <em>positive</em> acceleration between 2:00 pm and 3:00 pm, and the vehicle had a <em>negative</em> acceleration at 4:30 PM.
Explanation:
From 12:00 PM to 2:00 PM, the vehicle traveled at a constant velocity of 70 MPH, meaning there wasn't any change to the speed. The velocity <em>remained the same</em>. An hour later, the velocity of the vehicle <em>increased</em> to 80 MPH, and finally at 4:30 PM, the velocity of the car <em>decreased </em>and was at 40 MPH.
The answer is X. I hope this helped
I believe the answer is free electrons