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
ale4655 [162]
3 years ago
8

When Casey looks at a CD or DVD she notices that there is a rainbow pattern that is created by the light. She became curious and

shone light directly at it and a pattern was created on the wall. What is the cause of this pattern?

Physics
2 answers:
ipn [44]3 years ago
6 0

Answer:

Explanation:

diffraction

LekaFEV [45]3 years ago
4 0

Answer:

Interference

Explanation:

A CD is made up of thousands of pits arranged in the form of spiral tracks.These repeated patterns of pits form a thin film.

This film has the thickness of the order of the wavelength of the light which causes the interference of the waves of the light waves. The incident ray of light gets reflected from the top layer of the film partially and then after striking the bottom layer of the film creating a phase difference responsible for the constructive and destructive interference.

You might be interested in
A ball is dropped from a height of 10m. At the same time, another ball is thrown
soldi70 [24.7K]

5.1 m

Explanation:

Let's set the ground as our reference point. Let's also call the dropped ball to be ball #1 and its height above the ground at any time t is given by

y_1 = 10 - \frac{1}{2}gt^2 (1)

where 10 represents its initial height or displacement of 10 m above the ground. At the same time, the displacement of the second ball with respect to the ground y_2, is given by

y_2 = v_0t - \frac{1}{2}gt^2 (2)

At the instant the two balls collide, they will have the same displacement, therefore

y_1 = y_2 \Rightarrow 10 - \frac{1}{2}gt^2 = v_0t - \frac{1}{2}gt^2

or

v_0t = 10\:\text{m}

Solving for t, we get

t = \dfrac{10\:\text{m}}{v_0} = \dfrac{10\:\text{m}}{10\:\text{m/s}} = 1\:\text{s}

We can use either Eqn(1) or Eqn(2) to hind the height where they collide. Let's use Eqn(1):

y_1 = 10\:\text{m} - \frac{1}{2}(9.8\:\text{m/s}^2)(1\:\text{s})^2

\:\:\:\:\:\:\:= 5.1\:\text{m}

8 0
3 years ago
Objects in motion eventually stop moving due to a _____ .can someone help me with this question
Tom [10]

External force.

Air resistance, friction, grass rubbing on a rolling ball, etc.

If there is no external force on a moving object, it keeps going.

Forever !

8 0
3 years ago
What's faster a slow car or a fast feather?​
krok68 [10]

Answer:

A fast feather

Explanation:

The faster any item is, the more momentum it has

5 0
3 years ago
Read 2 more answers
Can someone give me an objective and subjective statement example please
shusha [124]

Answer:

Objective: It is raining. Subjective: I love the rain!

Explanation:

Anything objective sticks to the facts, but anything subjective has feelings. Objective and subjective are opposites.

(Hope this helps can I pls have brainlist (crown)☺️)

7 0
2 years ago
Hannah just finished building a house of cards that stands four stories high. She is worried that it will fall down. Which of th
Tju [1.3M]
A.) <span>If no unbalanced force acts upon the house of cards, then it will remain standing forever.

[ Other Statements doesn't make any sense in Physics, they can be true in some situation & can't be false, option A is the only answer ]
Hope this helps!</span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • Moving from 0m/s to 25m/s in 8.0s equals an average acceleration of...
    13·2 answers
  • A horse 1 m tall running towards a tree at a constant velocity of 20m/s,
    10·1 answer
  • Heat has the same units as:
    12·1 answer
  • Easy Guided Online Tutorial A special electronic sensor is embedded in the seat of a car that takes riders around a circular loo
    6·1 answer
  • 3+3+##+=484hcfngccnfjkr,hca,nkvn,zhjcf v
    7·1 answer
  • This is an earth science question about Issac Newton’s laws and I need some major help
    15·1 answer
  • A kind of tempory magnet​
    7·2 answers
  • If the purpose of electronic monitoring is to control offenders, it is a _____(1)_____, but if the purpose is to reintegrate off
    13·1 answer
  • A plane that is 2000m in the air of the potential energy of the plane is 86000 J what is the mass of the plane
    5·1 answer
  • An object, which is at the origin at time t=0
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!