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
crimeas [40]
3 years ago
15

A ray of light travels from air to water. Which statement about the angle of incidence, reflection and refraction is true? a. Th

e angle of reflection will always equal the angle of incidence, and the angle of refraction will be less than the angle of incidence. b. The angle of reflection will always equal the angle of incidence, and the angle of refraction will be greater than the angle of incidence. c. The angle of reflection be less than the angle of incidence, and the angle of refraction will be less than the angle of incidence. d. The angle of reflection be less than the angle of incidence, and the angle of refraction will be greater than the angle of incidence.
Physics
2 answers:
jeka57 [31]3 years ago
5 0

The law of reflection states that when a ray of light reflects off a surface, the <em>angle of incidence is equal to the angle of reflection</em>.

In this question, the light ray passes from air to water, an optically denser medium.

Imagine drawing a line to representing the boundary between two mediums. Now imagine drawing a line perpendicular to that boundary line marking where the light ray intersects the boundary line. This second line is called the normal. Whenever a light ray passes into a denser medium with a nonzero angle of incidence, the ray will bend towards the normal, making the <em>angle of refraction smaller than the angle of incidence</em>.

Choice A

erik [133]3 years ago
4 0
The answer is A good luck
You might be interested in
All fires require oxygen () There is no oxygen in that room (T) .
Marina CMI [18]

The sentences are invalid and unsound.

<h3><u>Explanation</u>:</h3>

The fire is defined as the vigorous oxidation of a substance. Now oxidation can occur in presence of any oxidising agent. Like magnesium in presence of nitrogen in high temperature with a dazzling brownish flame to produce magnesium nitride. So fire can be produced in absence of oxygen.

Oxygen is present everywhere in world. So production of a whole room without oxygen is very tough to produce and costly process. So its very unsound.

4 0
3 years ago
6. One minute after takeoff, a rocket carrying the space shuttle into outer space reaches a speed of 447 m/s.
Sidana [21]

Answer:

acceleration of the rocket is given as

a = 7.45 m/s^2

Explanation:

As we know that rocket starts from rest and then reach to final speed of 447 m/s after t = 1 min

so we have

v_i = 0

v_f = 447 m/s

t = 1 min = 60 s

so we have

a = \frac{v_f - v_i}{t}

a = \frac{447 - 0}{60}

a = 7.45 m/s^2

7 0
3 years ago
a u tube contains a liquid of an unknown density an oil of density is poured into the right arm of the tube until the oil column
scoray [572]

Answer:

The answer is "1155\ \frac{kg}{m^3}"

Explanation:

Please find the complete question in the attached file.

p = p_0 + ?gh

pi = pressure only at two liquids' devices

PA = pressure atmosphere.

1 = oil density

2 = uncertain fluid density

h_1 = 11 \ cm\\\\h_2= 3 \ cm

The pressures would be proportional to the quantity 11-3 = 8 cm from below the surface at the interface between both the oil and the liquid.

\to p_A + ?2g(h_1 - h_2) = p_A + ? 1gh_1\\\\\to ?2 = \frac{?1h_1}{(h_1 - h_2)} \\\\

       = \frac{840 \frac{kg}{m^3}}{\frac{11}{8}} \\\\= 1155\ \frac{kg}{m^3}

8 0
3 years ago
Observe some of the phenomena around your home. Look for something that you can’t explain right away, but that you could test wi
Leno4ka [110]

a toy/model steam engine. how it works and how to measure horse power

3 0
3 years ago
Which ion will act as a weak base in water?
GuDViN [60]

Answer:

An example of a weak base is ammonia. It does not contain hydroxide ions, but it reacts with water to produce ammonium ions and hydroxide ions. The position of equilibrium varies from base to base when a weak base reacts with water. The further to the left it is, the weaker the base.

Explanation:

I hope this helps!!

4 0
3 years ago
Other questions:
  • How would I label the y axis and fill it out and answer questions at the bottom I need answers please and thanks
    14·1 answer
  • Part 1: A rope has one end tied to a vertical support. You hold the other end so that the rope is horizontal. If you move the en
    12·1 answer
  • What kind of charge does an object have when it has given away electrons?
    9·2 answers
  • What type of energy slows down
    11·1 answer
  • What efficiency of a car's engine when heat input is 200,000 joules and waste heat is 150,000 joules?
    10·1 answer
  • The atmosphere is full of nitrogen and oxygen. These are
    11·1 answer
  • What force holds the lattice structure in place in a crystal?
    14·2 answers
  • Didifference between uniform and variable velocity <br>​
    13·2 answers
  • A brick is dropped from a height of 31.9 meters
    12·1 answer
  • What is kinematics??? +_+​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!