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
I am Lyosha [343]
4 years ago
14

You lay a mirror flat on the floor with one edge against a wall and aim a laser at the mirror. The ray reflects from the mirror

and strikes the wall. The plane of the incident and reflected rays is perpendicular to the wall. The ray from the laser strikes the mirror 30.7 cm from the wall, and the reflected ray strikes the wall 30.1 cm above the mirror. Find the angle of incidence of the laser ray on the mirror.
Physics
1 answer:
joja [24]4 years ago
4 0

Answer:

the angle of incidence θ is 45.56 º

Explanation:

Given data

strikes the mirror before wall x = 30.7 cm

reflected ray strikes the wall y =  30.1 cm

to find out

the angle of incidence θ

solution

let us consider ray is strike at angle  θ so after strike on surface ray strike to wall at angle 90 - θ

we will apply here right angle triangle rule that is

tan( 90 - θ) = y /x

tan( 90 - θ)  = 30.1 / 30.7

90 - θ = tan^-1 (30.1/30.7)

90 - θ = 44.4345

θ = 45.56 º

the angle of incidence θ is 45.56 º

You might be interested in
Two forces are going in opposite directions each force is 9.
professor190 [17]

Answer:

The net force is zero.

Explanation:

Two opposing and equal forces cancel each other out, giving you a net force of zero.

7 0
3 years ago
Which element is the biggest contributor to Climate Change?
sergey [27]

Answer:

carbon dioxide (CO2)

Explanation:

the burning or combustion of these fossil fuels creates gases that are released into the atmosphere. Of these gases, carbon dioxide (CO2) is the most common and is the gas most responsible for exacerbating the green- house effect that is changing global climate patterns.

7 0
3 years ago
A. How does the speed of light in a vacuum change when observed from two different frames of reference?
anyanavicka [17]

a) It is absolute, so it does not change.

b) Inertial ones.

c) Inside the train the time will slow down relatively to the outside clock. So if one travel at nearly the speed if light for 2 hours on his clock, for outdoor observers it will look like 3 hours.

4 0
3 years ago
Read 2 more answers
Which statement(s) is/are indicative of a covalent bond?
Over [174]
Do you have any answer options?

The most I can help is to tell you that a covalent bond is a type of bond that shares electrons between the bonded atoms.

4 0
3 years ago
What are dimensionless quantities??​
bearhunter [10]

Answer:

Characteristic numbers are dimensionless numbers used in fluid dynamics to describe a character of the flow. To compare a real situation with a small-scale model it is necessary to keep the important characteristic numbers the same. Names of these numbers were standardized in ISO 31, part 12.

Explanation:

7 0
2 years ago
Other questions:
  • Calculate the quantity of heat required to melt 5kg of ice​
    12·1 answer
  • What measurement is the quantity of mass per unit volume
    5·2 answers
  • Explain why the speed of a sled is increases as it moves down a snow -covered hill, even though no one is pushing the sled
    10·1 answer
  • Give an example of a fad diet that is not healthy and one that is healthy. Explain how you know the difference.
    7·1 answer
  • The universal law of gravitation states that the force of attraction between two objects depends on which quantities?
    6·1 answer
  • The work done to compress a spring with a force constant of 290.0 N/m a total of 12.3 mm is: a) 3.57 J b) 1.78 J c) 0.0219 J d)
    11·1 answer
  • Light of wavelength 500 nm is incident perpendicularly from air on a film 10-4cm thick and of refractive index 1.375. Part of th
    12·1 answer
  • 5. A belt runs on a wheel of 30.0-cm radius. During the time that the wheel coasts uniformly to rest from an initial speed of 2.
    15·1 answer
  • What is kinematics??<br>explain!!!~​
    15·2 answers
  • Camille knows that range of motion is very important. She is designing a weekly exercise program and is not sure where flexibili
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!