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Morgarella [4.7K]
3 years ago
15

A wave is approaching a barrier that has a small hole at the center. Which describes the change in the wave as it encounters the

barrier?
A.The wave will slow down

B.The wave will bend or defract

C.The wave will bounce in the opposite direction, or reflact.

D.The wave will increase its speed
Physics
2 answers:
AleksAgata [21]3 years ago
8 0

The answer is

B. The wave will bend or defract

Lisa [10]3 years ago
4 0

Answer: The correct answer is "The wave will bend or defract".

Explanation:

Diffraction: It is the phenomenon in which the light gets bend around the corner of the aperture or a slit. There is a spreading of the waves as they pass through an aperture.

The wavelength of the wave is comparable or greater than the size of the aperture to observe diffraction. If the wavelength of the wave is not comparable or greater than the size of the aperture then in this case, the diffraction is unnoticeable.

In the given problem, a wave is approaching a barrier that has a small hole at the center. A small hole is aperture here. The wave will bend or defract. The diffraction phenomenon will occur in this case.

Therefore, the correct option is (B).

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How do noise canceling headphones work?
postnew [5]

Answer:

B.) by interfering with sound waves

Explanation:

As we know that the interference of sound waves is of two types

1). constructive interference

2). destructive interference

now we know that constructive interference means the resultant intensity will be more than the intensity of interfering waves as here two waves are in same phase.

In destructive interference the resultant of two waves is given by the minimum resultant of the intensity as here the phase of two waves are opposite to each other.

So we will say that

I = \sqrt{(I_1 + I_2 + 2\sqrt{I_1I_2}cos\theta)}

here in case of noise cancelling headphones we know that the phase of noise is always made in opposite phase with the sound which is used to cancelled the noise.

This will reduce the noise and we will get a clear sound

5 0
3 years ago
Read 2 more answers
Neglecting air resistance which of the following statements is not true regarding the motion of a ball thrown vertically with an
inysia [295]

Answer:

c or b

Explanation:

6 0
3 years ago
Write one general properties of non contact force​
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Answer:    Gravitational force between the two masses does not depend on the medium separating two masses.

3 0
3 years ago
Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from =6 to =1.
scoundrel [369]

When an electron in a hydrogen atom transitions from the state of n=6 to n=1, a photon with an energy of 13.2 eV is released.

<h3>What components make up a photon?</h3>
  • A photon is a microscopic particle that is part of electromagnetic radiation waves.
  • Maxwell demonstrated that photons are merely electric fields flowing through space.
  • A single photon can trigger a response from sensors in the retina.
<h3>What is the difference between an electron and a photon?</h3>
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  • While the electron is a subatomic particle found in every atom, the photon is a sort of elementary particle that serves as an energy carrier.

learn more about photon here

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5 0
2 years ago
Two automobiles of equal mass approach an intersection. One vehicle is traveling with speed 13.0 m/s toward the east, and the ot
puteri [66]

Answer:

Explanation:

We shall apply law of conservation of momentum to know the Speed of northward moving vehicle before collision to check the veracity of driver's statement .

Let v be the velocity of composite mass after collision

Applying law of conservation of momentum in north direction

m v₂ = 2m v sin55.08

Applying law of conservation of momentum in east  direction

m x 13 = 2m v cos55.08

Dividing these two equations

v₂ / 13 = tan55.08

v₂ = 13  tan55.08

= 18.62 m/s

= (18.62 x60 x 60) / 1000

= 67 km/h

= 67 x 5/8 mi/h

= 42 mi/h

So he is lieing.

7 0
4 years ago
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