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
stellarik [79]
3 years ago
5

When leaving a fish tank, a ray moving at 31.0 deg in glass (n = 1.50) exits into the air. At what angle does it enter the air?

Physics
1 answer:
stiv31 [10]3 years ago
8 0

Answer: 20 degrees

Explanation:

Given that the

Refractive index n = 1.5

Incident angle = 31 degree

The refractive index formula is:

n = sin I/sin R

1.5 = sin 31/ sin R

Make sin R the subject of formula

Sin R = sin 31 / 1.5

Sin R = 0.515 / 1.5

Sin R = 0.343

R = sin^-1(0.34335)

R = 20 degrees

Therefore, it enters the air at angle 20 degrees

You might be interested in
A block sliding across a level surface has a mass of 2.5 kg and a mechanical energy of 20 joules. What is its velocity?
tia_tia [17]
Hi!

The energy of the block is 4 m/s

To calculate this, you need to use the equation for kinetic energy. The block is sliding (i.e. it's moving). If the object is sliding across a level surface, the only energy it has is kinetic energy, because there is no change in potential energy (which changes with height). So, the mechanical energy will be pure kinetic energy. The equation is the following, derived from the expression for kinetic energy:

v= \sqrt{ \frac{2*Ke}{m}}=\sqrt{ \frac{2*20 (kg*m^{2}*s^{-2}) }{2,5kg}}=4 m/s

Have a nice day!
8 0
3 years ago
What is the theoretical volume of 10mL of an ideal gas at absolute zero?
irinina [24]
PV=nRT
(P)(.010)=(n)(.08201)(0)
(v1/t1)=(v2/t2)
(.010/t1)=(v2/0)
The volume would be zero 
7 0
3 years ago
A mountaintop is a height y above the level ground. A woman measures the angle of elevation of the mountaintop to be θ when she
valentina_108 [34]
Let t = Theta and p = Phi
Tan t = y/x    Then x =y/Tant.
Tant = y/(x-d)  x-d = y/Tanp
y/Tant  - d = y/Tanp
y -d*Tanr = y*Tant/Tanp
y-y*Tant/Tanp  =  d*Tanr
y(1 - Tanr/Tanp = d*Tant

y = d*Tant/(1-Tant/Tanp)
7 0
3 years ago
A perpendicular force is applied to a certain area and produces a pressure P. If the
Furkat [3]

Answer:

p/2

Explanation:

4 0
3 years ago
Which of the following is a composite of a gas and a solid
cricket20 [7]
<span>{c o {a la manzana o
<span>Vapor de agua en el aire en una ducha de agua caliente</span>
</span>

3 0
3 years ago
Other questions:
  • Part a consider another special case in which the inclined plane is vertical (θ=π/2). in this case, for what value of m1 would t
    7·1 answer
  • I WILL MARK BRAINLIEST FOR THE FIRST PERSON TO ANSWER THESE QUESTIONS!!
    8·1 answer
  • A bus accelerates at -0.5 m/s2 for 12.5 seconds . If the bus had an initial speed of 31 m/s, what is its new speed? A. 12.25m/s
    12·1 answer
  • If 3.5 paper clips = 1.0 pencils and your paper is 1.5 pencils long, how many paper clips long is your paper?
    12·1 answer
  • A substance has a volume of 4,000 cm and a mass that is 2,000 g. What is the density of the substance.
    7·1 answer
  • Flexibility is earned through regular _____ and ______
    14·1 answer
  • Two representative elements are in the same period of the periodic table. Which statement correctly describes the atoms of the t
    15·1 answer
  • PLEWSE SOMEONE HELP ILL MARK BRAINLIST
    9·2 answers
  • Plz help I will mark as brainlest plz help me
    13·1 answer
  • As shown in (Figure 1), a layer of water covers a slab of material X in a beaker. A ray of light traveling upwards follows the p
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!