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
neonofarm [45]
3 years ago
12

For 589-nm light, calculate the critical angle for the following materials surrounded by air. (a) fluorite (n = 1.434) ° (b) cro

wn glass (n = 1.52) ° (c) ice (n = 1.309)
Physics
1 answer:
Simora [160]3 years ago
4 0

Answer:

a) θc = 44.21⁰.

b) θc = 41.14⁰

c)  θc = 40.36⁰

Explanation:

sin θ = \dfrac{n_2}{n_1}

For air,

n₂ = 1

so,

sin θ =  \dfrac{1}{n_1}

(a) fluorite : n₁ = 1.434⁰

sin θ = 0.697                   θc = 44.21⁰.

(b) crown glass: n₁ = 1.52⁰  

sin θ = 0.657                   θc = 41.14⁰.

(c) sodium chloride : n₁= 1.544⁰

sin θ = 0.647                   θc = 40.36⁰.

You might be interested in
Please help!!! zoom in to read it clearly
Artist 52 [7]

Answer:

imma try nd help cuz i havent seen anybody answer so

1.sara

2.same for both

3.tom

Explanation:

4 0
3 years ago
A wave has a speed of 50 m/s and a frequency of 100 Hz. Calculate its wavelength.
Allisa [31]

Answer:

1/2m or 0.5m

Explanation:

The formula to find the speed of a wave is given by:

V = frequency x wavelength

To find the wavelength, make the wavelength the subject of the formula

Therefore, wavelength = velocity ÷ frequency

8 0
3 years ago
If you had 6,000 milligrams of rock to move how many kilograms is that?
True [87]

Answer:

0.006

Explanation:

100mg= 0.0001kgghsjsslslkdn d

5 0
3 years ago
Earth-orbiting astronauts feel weightless in space because _____. Choose all that apply. 1 point They are in free-fall motion. T
STALIN [3.7K]

Answer:

They are in free-fall motion.

Explanation:

The Earth orbiting astronauts are falling at an acceleration that is the same or greater than the acceleration due to gravity i.e., 9.81 m/s². If you are continuously falling at this rate then you will feel weightless.

This same effect is felt while going down in an elevator. When you down in an elevator you feel that you are lighter and feel that something is pushing you up. Earth-orbiting astronauts feel the same effect but the accelration is greater hence they feel weightless.

5 0
3 years ago
Projectiles that strike objects are good examples of inelastic collisions. A 0.1 kg nail driven by a gas powered nail driver col
Ratling [72]
In an inelastic collision, only momentum is conserved, while energy is not conserved.

1) Velocity of the nail and the block after the collision
This can be found by using the total momentum after the collisions:
p_f=(m+M)v_f=4.8 kg m/s
where
m=0.1 kg is the mass of the nail
M=10 kg is the mass of the block of wood
Rearranging the formula, we find v_f, the velocity of the nail and the block after the collision:
v_f= \frac{p_f}{m+M}= \frac{4.8 kg m/s}{0.1 kg+10 kg}=  0.48 m/s

2) The velocity of the nail before the collision can be found by using the conservation of momentum. In fact, the total momentum before the collision is given only by the nail (since the block is at rest), and it must be equal to the total momentum after the collision:
p_i = mv_i = p_f
Rearranging the formula, we can find v_i, the velocity of the nail before the collision:
v_i =  \frac{p_f}{m}= \frac{4.8 kg m/s}{0.1 kg}=48 m/s
6 0
3 years ago
Read 2 more answers
Other questions:
  • A beam of electrons moving in the x-direction enters a region where a uniform 208-G magnetic field points in the y-direction. Th
    12·1 answer
  • Which of the following is an environmental consequence of nuclear energy?
    6·1 answer
  • There is an electric field in the region between the two plates. The magnitude of this electric field is ed. This imposes anothe
    9·1 answer
  • A race car starts from rest on a circular track of radius 310 m. Its speed increases at the constant rate of 0.6 m/s 2 . At the
    11·1 answer
  • Assuming a 8 kilogram bowling ball moving at 2 m/s bounces off a spring at the same speed that had before bouncing what is the a
    14·1 answer
  • A part of a circuit contains an inductor. The current through the inductor is changing uniformly from 2.40A to 0.30A over the co
    12·1 answer
  • Un móvil parte del reposo y, al cabo de 5 s, alcanza una velocidad de 5 m/s; a
    13·1 answer
  • How do you measure the amplitude of a longitudinal wave?
    6·1 answer
  • Check the attached image for the question~
    12·1 answer
  • A body of mass 60kg is displaced through 90m in 4 second when force is applied to it.calculate acceleration and the force applie
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!