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
Scilla [17]
3 years ago
10

How long does it take light ray B to reach the girls eye? (speed of light at 3*10^8) And could someone explain why?

Physics
1 answer:
kodGreya [7K]3 years ago
6 0

Explanation:

Using properties of 30-60-90 triangles, the distance from the vase to the mirror is 2/√3, and the distance from the mirror to the girl is also 2/√3.  So the light travels a total distance of 4/√3 meters.

t = d / v

t = (4/√3 m) / (3×10⁸ m/s)

t = 7.7×10⁻⁹ s

You might be interested in
Which component is used to change alternating current to direct current
Ad libitum [116K]
A rectifier is used.
3 0
3 years ago
Read 2 more answers
You want to estimate the height of the Empire State Building. You start at its base and walk 15 m away. Then you approximate the
MatroZZZ [7]

Answer:

429 m

Explanation:

In this exercise you are suppose to simulate a right triangle, the catheti are the distance you walked and the height of the empire state building.

tan(88) = (height) /(distance you walked)

28.64 = height / 15

height = 429 m

8 0
3 years ago
A flea can jump with an initial velocity of 2.2 m/s at an angle of 21° with respect to the
Serga [27]

Answer:

Explanation:

If no one can see it because the lights were out. Did the flea really jump?

What do you want here?

Max height (2.2sin21)²/ 2(9.8) = 3.2 cm

Time of flight 2(2.2sin21)/ (9.8) = 0.16 s

distance of flight (2.2cos21)(0.16) = 33 cm

8 0
2 years ago
What does the following figure illustrate?
Ilia_Sergeevich [38]
The answer to this question is C
4 0
3 years ago
Read 2 more answers
The acceleration of a vertically thrown ball at the top of its path is?
ser-zykov [4K]
C between zero and g
5 0
2 years ago
Other questions:
  • Need help on question b
    7·1 answer
  • What is the speed of a bobsled whose distance-time graph indicates that it traveled 124m in 26s
    7·1 answer
  • What is the angle of reflection?
    10·2 answers
  • In 1-2 sentences describe how your nose cleans the air you inhale.
    15·1 answer
  • A solid element that is malleable' a good conductor of electricity, and reacts with oxygen is classified as a
    14·1 answer
  • What is the direction of magnetic field lines inside any magnet?
    10·1 answer
  • Why is it a better to wear a white shirt on a hot summer day instead of a black shirt?
    13·2 answers
  • A block of weight 1200N is on an incline plane of 30° with the horizontal, a force P is applied to the body parallel to the plan
    10·1 answer
  • Can anyone plz help me ​
    15·1 answer
  • Please help will be marked most brainlist !!!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!