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
kari74 [83]
3 years ago
9

The critical angle for a liquid in air is 520, What is the liquid's index of refraction? 0.62 0.79 1.27 1.50

Physics
1 answer:
sammy [17]3 years ago
8 0

Answer:

Liquid's index of refraction, n₁ = 1.27

Explanation:

It is given that,

The critical angle for a liquid in air is, \theta_c=52^o

We have to find the refractive index of the liquid. Critical angle of a liquid is defined as the angle of incidence in denser medium for which the angle of refraction is 90°.

Using Snell's law as :

n_1sin\theta_c=n_2sin\theta_2

Here, \theta_2=90

sin\theta_c=\dfrac{n_2}{n_1}

Where

n₂ = Refractive index of air = 1

n₁ = refractive index of liquid

So,

n_1=\dfrac{n_2}{sin\theta_c}

n_1=\dfrac{1}{sin(52)}

n₁ = 1.269

or n₁ = 1.27

Hence, the refractive index of liquid is 1.27

You might be interested in
Newton's law of cooling says that the rate of cooling of an object is proportional to the difference between the temperature of
Feliz [49]

Answer:

T=T_o+C'e^{-kt}

Explanation:

Newton's law of cooling

Rate of cooling

\dfrac{dT}{dt}\alpha(T-T_o)

Where To is the surrounding temperature

T is object temperature at any time t

now by removing proportionality sign

\dfrac{dT}{dt}=-k(T-T_o)

Now by separating variables

\dfrac{dT}{(T-T_o)}=-k\ dt

\int \dfrac{dT}{(T-T_o)}=-\int k\ dt

So

\ln (T-T_o)=- k\ t +C

Where C is constant

T=T_o+C'e^{-kt}

C' is also a constant and it can be find by using boundary conditions.

4 0
3 years ago
If a car used 260,000 W of power to complete a race in 15 s, how much work did the car do?
suter [353]

Answer: 3.9 MW

Explanation:

1 W = 1 J/s

260000 J/s (15 s) = 3,900,000 = 3.9 MW

3 0
3 years ago
A rigid tank contains 10 lbm of air at 30 psia and 60 F. Find the volume of the tank in ft3. The tank is now heated until the pr
Verizon [17]

Answer:

Hence the amount of heat transfer is 918.75 Btu.

Explanation:

Now,

6 0
3 years ago
(I) A hiker determines the length of a lake by listening for the echo of her shout reflected by a cliff at the far end of the la
xxMikexx [17]

Answer:

425 m

Explanation:

From the question,

v = 2x/t.................... Equation 1

Where v = speed of sound in air, x = Length of the lake, t = time.

make x the subject of the equation

x = vt/2............... Equation 2

Given: t = 2.5 s

Constant: v = 340 m/s.

Substitute these values into equation 2

x = 340(2.5)/2

x = 425 m.

Hence the length of the lake is 425 m

4 0
4 years ago
What happens if the value of VOq doubles
Crazy boy [7]

If Voq doubles, abN gets multiplied by 16 .

If Voq=3, abN=81 .

8 0
3 years ago
Other questions:
  • A particle is in uniform circular motion. Assume a standard rtz coordinate system. If you deconstruct the net force acting on th
    7·1 answer
  • When describing the interaction between magnetic poles we could say that
    15·2 answers
  • Which illustration represents high accuracy but low precision?<br><br><br> plz help
    11·2 answers
  • A rock is dropped from a bridge to the water below. It takes 3.2 s for the rock to hit the water. Find the speed (in m/s) of the
    11·1 answer
  • A source charge generates an electric field of 1236 N/C at a distance of 4 m. What is the magnitude of the source charge?
    6·2 answers
  • Two trains run in the opposite direction with speeds of v1 = 15 m / s and v2 = 20 m / s. A passenger on the first train (the one
    9·1 answer
  • You attach a meter stick to an oak tree, such that the top of the meter stick is 1.471.47 meters above the ground. Later, an aco
    10·1 answer
  • What do you think will be different about cars in the future? Describe a change that is already being developed or that you thin
    9·1 answer
  • I’ll literlly give you points <br> and make you brainiest
    10·1 answer
  • According to evidence presented in both the text and video, which statement is the most accurate regarding the relationship betw
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!