Answer:
572.3 nm
Explanation:
= refractive index of the oil film = 1.48
= thickness of the oil film = 290 nm
= wavelength of the dominant color
m = order
Using the equation

For m = 0

= 1716.8 nm
For m = 1

= 572.3 nm
For m = 2

= 343.4 nm
Hence the dominant color wavelength is 572.3 nm
Answer:
e
Explanation:
i took it myself and got it right
Answer:
Explanation:
Given
Horizontal bar rises with 300 mm/s
Let us take the horizontal component of P be


where
is angle made by horizontal bar with x axis
Velocity at y=150 mm

thus 
position of


Velocity at this instant


I think is altitude because tbh it don’t even mean nothing