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
charle [14.2K]
3 years ago
14

sound waves generated in a classroom must _______ through an open doorway in order to propagate into the hallway. reflect refrac

t diffract
Physics
2 answers:
quester [9]3 years ago
5 0
<h3><u>Answer;</u></h3>

Diffract

Sound waves generated in a classroom must <em><u>diffract</u></em> through an open doorway in order to propagate into the hallway.

<h3><u>Explanation;</u></h3>
  • <em><u>Sound waves are a type of mechanical waves that requires a material medium for transmission,</u></em> they are longitudinal wave with all the properties of other waves.
  • <em><u>Diffraction is one of the property of waves that involves a change in direction of waves as they pass through an opening or around a barrier in their path. </u></em><u><em>Sound wave diffract around corners or through the door openings, allowing people to hear others speaking to us from rooms that are adjacent. </em></u>
galina1969 [7]3 years ago
3 0
<span>Sound waves generated in a classroom must diffract  through an open doorway in order to propagate into the hallway. </span>
You might be interested in
What is a tool that can be used to measure the size of a force
Travka [436]
The answer to this question would be: a spring scale.

The spring scale that you use to determine your body weight is actually a device that measures your body gravitational force. The force itself influenced by your body weight, that is why it can determine your body weight.
More weight means more force, more force will shrink the spring more.
7 0
3 years ago
Which of the following terms is given to a pair of stars that appear to change position in the sky, indicating that they are orb
Ad libitum [116K]

Answer:

option A

Explanation:

The correct answer is option A

The binary star system is the system in which two stars are continuously orbiting each other,

In the eclipsing binary system, two stars revolve about there center of mass and in this system one one-star eclipse another star.

Spectroscopic binary stars are found from the observation of radial velocity and the brighter member of such binary can be seen to have continuously changed the wavelength and periodic velocity.

When the pairs of stars appear to change position in the sky then it is known as visual binary.

5 0
3 years ago
Which of these is the most ductile? A. clay B. gold C. wood D. glass
Feliz [49]
I'm pretty sure the answer is gold
8 0
3 years ago
A cannon is mounted on a tower above a wide, level field. The barrel of the cannon is 20 m above the ground below. A cannonball
OLga [1]

<u>Answer:</u>

  Cannonball will be in flight before it hits the ground for 2.02 seconds

<u>Explanation:</u>

  Initial height from ground = 20 meter.

  We have equation of motion , s= ut+\frac{1}{2} at^2, s is the displacement, u is the initial velocity, a is the acceleration and t is the time.

  In this the velocity of body in vertical direction = 0 m/s, acceleration = 9.8 m/s^2, we need to calculate time when s = 20 meter.

  Substituting

         20=0*t+\frac{1}{2} *9.8*t^2\\ \\ t = 2.02 seconds

  So it will take 2.02 seconds to reach ground.

5 0
3 years ago
What is the importance of a reference point when looking at motion
Cloud [144]
<span>It is important to use a fixed common reference point on your work peace or drawing to avoid cumulative error</span>
8 0
3 years ago
Other questions:
  • Tell the value of the underlined digit 843,208,732,833 eight is underlined
    12·2 answers
  • After a metal object turns to dust(rust) it would have ?
    15·1 answer
  • _________ are exchanged or shared during the formation of a chemical bond.
    12·2 answers
  • A 2-kg object is moving horizontally with a speed of 4 m/s. How much net force is required to keep the object moving at this spe
    9·1 answer
  • A slab of glass has a 0.600 cm thick layer of water on top of it. A light ray strikes the water at an incident angle of 59.0°. A
    11·1 answer
  • The velocity time graph of a car shown below a) Calculate the magnitude of displacement of the car in 40 seconds. b) During whic
    15·1 answer
  • 35 pts please help quick
    12·1 answer
  • If multiple measurements are taken and they vary quite a bit from each other, the measurements are
    15·2 answers
  • 1.
    14·2 answers
  • Example 7.3
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!