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
Elenna [48]
3 years ago
8

The critical angle for water is 49°. If a ray of light

Physics
1 answer:
Sonja [21]3 years ago
3 0

Answer:

Snell's Law states

Ni sin i = Nr sin r

Judging from the question the source of the ray is in the water (directed up)

or NI = 1 / sin 49      Ni = 1.325 deg     the critical angle

From inside the pond:

Nr = 1.325 * sin 45 / 1 = 94 deg  

So refraction can occur  outside the pond and you do not have total internal refection.

 

You might be interested in
What two factors directly affect the acceleration of an object?
marin [14]

The acceleration of an object depends on the mass of the object and the amount of the force applied to it. It states that the acceleration of an object increases with increased force and decreases with increased mass.

4 0
3 years ago
Is every section of the chromosome active? Why or why not?
Nat2105 [25]
Yes, every section of the chromosome is active because 1 chromosome can hold many genes that works together to make proteins
4 0
3 years ago
Read 2 more answers
Serena drops a 5-kg book down the stairwell. What is the book's final velocity vf after it falls
elena55 [62]

Answer:

39.2m/s

Explanation:

Given parameters:

Mass of book  = 5kg

Time taken for fall  = 4s

Unknown:

Final velocity of the book  = ?

Solution:

Serena dropped the book from rest therefore, the initial velocity of the book is 0.

 Let us find the appropriate motion equation to solve this problem;

        V  = U + gt

V is the final velocity

U is the initial velocity

g is the acceleration due to gravity  = 9.8m/s²

t is the time taken

  Insert the given parameters and solve;

       V = 0 + 9.8 x 4  = 39.2m/s

3 0
3 years ago
Elephants are loaded into containers that are pulled up a ramp an inclined plane at 15 degrees to the ground .The container is h
tankabanditka [31]

Given:

Inclined at 15 degrees

Tension of 5000N

Mass of container 800kg

Required:

Mass of elephant

Solution:

F = mgcos(theta)

5000 = m (9.8m/s2)cos(15)

<span>M = 528.2kg</span>

8 0
3 years ago
Name the conditions required for 2 waves to interfere constructively
Brrunno [24]

The sources of the waves must be coherent, which means they emit identical waves with a constant phase difference and the waves should be monochromatic - they should be of a single wavelength.

~Sanjith U.

4 0
3 years ago
Other questions:
  • A 0.21 kg baseball moving at +25 m/s is slowed to a stop by a catcher who exerts a constant force of −360 N. a) How long does it
    7·1 answer
  • Psychologists working from the biological perspective are interested in the __________. A. internal conflicts that affect behavi
    7·2 answers
  • Two blocks with masses m1=0.25kg and m2=1.4kg approach each other along a horizontal, frictionless track. The initial velocities
    6·1 answer
  • A zebra runs across a field at a constant speed of 14m/s how far does the zebra go in 8 seconds?
    12·2 answers
  • A body having uniform velocity has zero acceleration. Give reason.​
    14·2 answers
  • __________ is the study of things continually moving or at rest.
    10·1 answer
  • The power of a motorcycle is 150W and the time is 14s. What is the work?
    6·1 answer
  • What is the amount of electrical potential is measured by?<br> A. ampere<br> B. watt<br> C. volts
    11·1 answer
  • How are scientists studying the effects of space on the human body?
    9·2 answers
  • Another term for technology is
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!