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
sergij07 [2.7K]
2 years ago
5

Define Refraction and give some knowlegde about it

Physics
1 answer:
shepuryov [24]2 years ago
7 0
Refraction is the change in direction of a wave, caused by the change in the wave's speed. Examples of waves include sound waves and light waves. Refraction is seen most often when a wave passes from one transparent medium to another transparent medium. Different types of medium include air and water. When a wave passes from one transparent medium to another transparent medium, the wave will change its speed and its direction. For example, when a light wave travels through air and then passes into water, the wave will slow and change direction.
You might be interested in
The jumping gait of the kangaroo is efficient because energy is stored in the stretch of stout tendons in the legs; the kangaroo
Anna [14]

Answer:

the period T of whole motion should be twice the value for half at he bottom so T is 0.2sec.

w is angular frequency

formula:2π/T

now k is spring constant

F/R-->mw²

putting values:70*(2π/0.2)²

=4.9x10⁶

so we can say that SHM is not affected by the amplitude of the bounce.

6 0
3 years ago
A 2200 kilogram car is accelerating at 3.4 m/s/s. what is the NET force?
sdas [7]
We Know, F = m*a
F = 2200 * 3.4
F = 7480 Kg m/s²

So, your final answer is 7480
7 0
3 years ago
What is the difference between a 3 v and 12 v battery
Lorico [155]
V=IR
The more V, the more I
6 0
3 years ago
A cat dozes on a stationary merry-go-round, at a radius of 5.7 m from the center of the ride. Then the operator turns on the rid
tatyana61 [14]

Answer:

0.76

Explanation:

we are given:

radius (r) =5.7 m

speed (s) = 1 revolution in 5.5 seconds

acceleration due to gravity (g) = 9.8 m/s^{2}

coefficient of friction (Uk) = ?

 we can get the minimum coefficient of friction from the equation below

centrifugal force = frictional force

m x r x ω^{2} = Uk x m x g

r x ω^{2} = Uk x g

Uk = \frac{ r x ω^{2} }{g}

where ω (angular velocity) = \frac{2π}{time}

= \frac{2π }{5.5} = 1.14

Uk = \frac{ 5.7 x 1.14^{2} }{9.8} = 0.76

6 0
3 years ago
Which statement is false?
Mkey [24]

Answer:

Once you reach adulthood, you will not experience peer pressure.

Explanation:

We tend to believe that self-control comes from within, but many of our attitudes depend as much on friends and family as on ourselves. That's because at any stage of our life (even the adult stage) our friends and our family have the power to influence us, sometimes that influence is good and sometimes bad, it's up to us to reason about them.

The people around us have the power to make us fat, consume more alcohol, worry less about the environment and expose ourselves to the sun without proper protection, among many other things.

It is not simply about peer pressure, where you deliberately act in a certain way to suit the group. It is, in fact, largely an unconscious attitude. Without your awareness, your brain is constantly picking up cues from people around you to dictate your behavior. And the consequences can be serious.

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is a factor that affects the outcome of an experiment?
    6·2 answers
  • 36 is what percent of 150?<br>​
    12·2 answers
  • Hi guys. Im doing a project at school where we have to create a mouse trap powered car. I wanted to know what materials are a mu
    10·1 answer
  • An object with an initial velocity of 27 m/s has a final velocity of 39 m/s after 13 seconds.
    6·1 answer
  • Does the following decrease or increase normal force? Pulling up on the object.
    7·2 answers
  • In Part H, you discovered that the luminosity of a light bulb increases if the current increases. The rate at which electric pot
    11·1 answer
  • Two similar waves X and Y travel through the same medium. Wave X has a frequency of 200 hertz and a
    11·1 answer
  • A laborer pushes a box to distance of 20m. if the force required to push the box is 25N what will be the quantity of work done​
    9·1 answer
  • Match the following terms.
    7·1 answer
  • P(A/B) - P(ANB)<br> P(B)<br><br> P(Girl|Sophomore)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!