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valentinak56 [21]
4 years ago
10

You see an image of yourself in a mirror because light waves are A) diffracted. B) reflected back at you. C) refracted through a

ir. D) refracted to a focal point.
Physics
2 answers:
kondaur [170]4 years ago
6 0

Answer:

(b) reflected back at you

Explanation:

Nadya [2.5K]4 years ago
6 0

Answer:

B) Reflected back at you.

Explanation:

Because of the smooth surface light reflects and bounces back to you making you see a reflected image of your self.

Hope this helped! Good luck and stay safe!!

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What is the maximum number of lines per centimeter a diffraction grating can have and produce a complete first-order spectrum fo
Vitek1552 [10]

Answer:

1315789.47368 lines/m

Explanation:

m = Order = 1

sin\theta = 1 For maximum condition

\lambda = Wavelength = 760 nm maximum

From Rayleigh criteria we have the expression for the gap

d=\dfrac{m\lambda}{sin\theta}\\\Rightarrow d=\dfrac{1\times 760}{1}\\\Rightarrow d=760\ nm

The number of lines is the reciprocal of the slit distance

n=\dfrac{1}{d}\\\Rightarrow n=\dfrac{1}{760\times 10^{-9}}\\\Rightarrow n=1315789.47368\ /m

The number of lines is 1315789.47368 per meter

7 0
3 years ago
A bird can fly 25 km/h. How long does it take to fly 15 km?
Amanda [17]
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5 0
3 years ago
A car of mass 1200kg moving 90km/hr is brought to rest over a distance of 20m. calculate breaking force.​
patriot [66]

Answer:

-18,750N

Explanation:

90x1000

-------------

3600

u=25m/s

v=0m/s

v^2=u^2+2as

v=0

=625+(2×a×20)

625+40a

-625=40a

a= -15.625 m/s^2

F=ma

=(1200)(-15.625)

= -18,750N

4 0
2 years ago
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