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
Hatshy [7]
3 years ago
15

For what angle of incidence at the first mirror will this ray strike the midpoint of the second mirror (which is 28.0 cmcm long)

after reflecting from the first mirror
Physics
1 answer:
loris [4]3 years ago
5 0

This question is incomplete, the complete question is;

Two plane mirrors intersect at right angles. A laser beam strikes the first of them at a point 11.5 cm from their point of intersection, as shown in the figure.

For what angle of incidence at the first mirror will this ray strike the midpoint of the second mirror (which is 28.0 cmcm long) after reflecting from the first mirror

Answer: angle of incidence is 39.4°

Explanation:

Given that;

two plain mirrors intersect at right angle (90°)

distance d = 11.5 cm

S = 28.0 cm

Now the angle that the reflection ray males with first the mirror equal theta  (∅)

so

tan∅ = (S/2) / d

tan∅ = (28/2) / 11.5

tan∅ = 14 / 11.5

tan∅ = 1.2173

∅ = tan⁻¹ (1.2173)

∅ = 50.6°

so angle of incidence = 90° - ∅

= 90° - 50.6°

= 39.4°

Therefore angle of incidence is 39.4°

You might be interested in
A car is traveling at a constant speed on the highway. Its tires have a diameter of 65.0 cm and are rolling without sliding or s
lesya692 [45]

Answer:

Explanation:

The car is rolling without slipping so Vcm= R×ω = 0.325×49 = 16

4 0
2 years ago
Tell whether each element has a high or low electronegativity : bromine, chlorine, potassium, lithium
finlep [7]

Answer:

Bromine-2.8 high

Chlorine-3.0 high

Potassium-0.8 low

Lithium-1.0 low

Explanation:

3 0
3 years ago
In a cup of liquid water when would water molcules stop moving
Mandarinka [93]
The the Water turns to ice. But even then they would never truly stop moving.<span />
3 0
2 years ago
Read 2 more answers
What are the methods of avoiding demagnetization​
lbvjy [14]

\\

The best method to use in prevention of self-demagnetization of a permanent magnet is by use of a keeper. Keepers were also commonly known as amateurs. They help in storing magnets safely, especially those that have low coercivity ( magnets that are extremely susceptible to stray fields).

\\

Hope It Helps!

4 0
2 years ago
The mass of a large car is 1000 kg. How much force would be required to accelerate the car at a rate of 3msec2
pogonyaev

Answer:

3000 N

Explanation:

We have,

• Mass, m = 1000 kg

• Acceleration, a = 3 m/s²

We have to find force required, F.

\longrightarrow F = ma

\longrightarrow F = 1000 × 3 N

\longrightarrow F = 3000 N (Answer)

8 0
2 years ago
Other questions:
  • Shawna is very knowledgeable about cars​
    9·1 answer
  • A baby elephant weighs 250 pounds on Earth. How much would the elephant weigh on Saturn?
    12·1 answer
  • The discharge of a stream is Choose one: likely to decrease downstream in arid regions and increase downstream in temperate regi
    13·1 answer
  • A box of groceries requires 5.0 Newton’s of force to lift it up 1.0 meter how much work is done
    6·2 answers
  • A stone is tied to a 0.85-meter cord. it is swung in a circle at a constant rate of 6.0 m/s. what is the centripetal acceleratio
    12·1 answer
  • If a 100 N net force act on a 50-kg car, what will the acceleration be
    5·1 answer
  • A 1000 kg red car traveling at 40 m/s rear ends a 3000 kg blue car traveling at 35 m/s. the cars bounce off each other and the b
    10·1 answer
  • A student is conducting an experiment to determine how far a ball will roll down a ramp based on the angle of incline. What are
    7·1 answer
  • A wave travels from Medium 1 (light like slinky) into Medium 2 (heavy and rigid like snakey). Which property or properties of th
    5·1 answer
  • A man pushes a 10 kg box a distance of 5 m for 3 hours. How much work<br> did the man complete?*
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!