1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
MAXImum [283]
3 years ago
7

7. When initially-unpolarized light passes through three polarizing filters, each oriented at 45 degree angles from the precedin

g filter, _____ of the initial light passes through the last filter.
Physics
1 answer:
GREYUIT [131]3 years ago
7 0

Answer:

Explanation:

Let the intensity  of unpolarised light be I₀ . After passing through the first polarising filter , the intensity  is I₀ / 2 .

After second filter , the intensity  will be  I₀ / 2 x cos²45 =  I₀ / 4

After third filter , the intensity will be I₀ / 4  x cos²45 = I₀ / 8 .

So,

1 / 8 the of initial light passes through the last filter .

You might be interested in
Someone help me with these two questions ASAP!!!
Sonbull [250]

For the first question it is the fourth option. Cryosphere is a term for the portions of earth that are covered in water when the water is in solid form. this includes both snow and ice.

For the second question the answer is a delta is formed at the mouth of the river a sediment is carried down stream. The hydrosphere refers to all water on earth.

5 0
3 years ago
Read 2 more answers
Diamonds are usually found in pipes 50 to 200 m across made of ________.
Leokris [45]
I believe the correct answer would be kimberlite. Diamonds are usually found in pipes 50 to 200 m across made of kimberlite. It is an igneous rock that is known to contain traces of diamonds. It is named base on the town where it was discovered which is Kimberley, South Africa. 



7 0
3 years ago
Explain how an intrusive igneous rock could become a metamorphic rock and then an extrusive igneous rock.
sleet_krkn [62]
1.igneous rocks are formed when magma or lava cools and hardens
2. the cooling rate of the rock
5 0
3 years ago
Help please I will mark you the brainly!
Fudgin [204]

D)

Explanation:

Coz the position changes with time but the position change is not constant throughout time So, D) does not have constant velocity

3 0
2 years ago
Read 2 more answers
1. During which phase of the moon may a solar eclipse occur? (Points : 1)
kotykmax [81]
1. New moon
This is because the moon comes between the Earth and sun and this is only possible during its new moon phase.

2. Full moon
This is because the Earth comes between the Moon and the sun and the effect is only visible when there is a full moon.

3. Corona
The corona is the outer layer and is the only one visible when there is an eclipse.
7 0
3 years ago
Read 2 more answers
Other questions:
  • An object is hung from a spring balance attached to the ceiling of an elevator cab. The balance reads 65 N when the cab is stand
    7·1 answer
  • Why is it important for scientists to share information from their investigation?
    8·1 answer
  • Thr frequency of a wave traveling throught the air of a hot, dry desert is 1,200 hertz. Its wavelength is 0.300 meters. What is
    13·1 answer
  • Explain how characteristic and traits are related<br>​
    15·1 answer
  • How many times higher could an astronaut jump on the Moon than on Earth if his takeoff speed is the same in both locations (grav
    5·1 answer
  • When we say "muscle" - the ones that show how strong you are, we are referring to what kind of muscles?
    11·2 answers
  • __________ theory argues that city growth is generated by the pressure from the city center to expand outward. Expansion threate
    11·2 answers
  • Explai how newton's first law of motion follows from the second law<br>​
    9·1 answer
  • Write two functions of kotokis​
    8·1 answer
  • During photosynthesis, what is the source of the carbon in<br> the sugar (CH20) that is created?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!