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never [62]
4 years ago
10

Which would increase the speed of a sound wave?

Physics
1 answer:
nirvana33 [79]4 years ago
6 0

Answer:

it's option 2 : the medium increases in temperature while remaining in the same phase

You might be interested in
Challenge question: An arrow is placed at 3 centimeters to the left of a converging lens. The image appears at 3 centimeters to
Zanzabum

The focal length of the converging lens based on the arrow placed  3 centimeters to the left and the imaged formed 3 cm to the right is 1.5 cm.

<h3>Focal length of the converging lens</h3>

The focal length of the converging lens is determined by applying the following converging lens formula.

1/f = 1/v + 1/u

where;

  • v is the image distance = 3 cm
  • u is the object distance = 3 cm
  • f is the focal length = ?

1/f = 1/3 + 1/3

1/f = 2/3

f = 3/2

f = 1.5 cm

Thus, the focal length of the converging lens is 1.5 cm.

Learn more about converging lens here: brainly.com/question/22394546

8 0
2 years ago
If the frequency of this beam is increased while the intensity is held constant, does the number of electrons ejected per second
Ivan

Answer:

if the intensity of photons is constant then number of ejected electrons will remain same

Explanation:

As per photoelectric effect we know that when light of sufficient frequency fall on the surface of metal then electrons get ejected out of the surface with certain kinetic energy

Here the energy of photons is used to eject out the electrons from metal surface and to give the kinetic energy to the ejected electrons

so we have

h\nu = W + KE

here W = work function of metal which shows the energy required to eject out electrons from metal surface

KE = kinetic energy of ejected electrons

now if we increase the frequency of the photons that incident on the metal surface then in that case the incident energy will increase

So the electrons will eject out with more kinetic energy while if the number of photon is constant or the intensity of photons is constant then number of ejected electrons will remain same

8 0
3 years ago
If the incident intensity of the light is 26 W/m, what is the intensity of the light that emerges from the filter
REY [17]

47W/m^{2}  is the intensity of the light that emerges from the filter

Use Malus's law, the intensity of the light is,

        I=I_{0}, cos² ∅

The intensity of the beam from the first polarizer is equal to the half of

the initial intensity.

            I_{1} = I_{0}/2

Substitute the numerical values we get

94 W/m² 2

= 47 W/m²

What is intensity ?

In physics, the power transferred per unit area is known as the intensity or flux of radiant energy, where the area is measured on a plane perpendicular to the direction of the energy's propagation. Watts per square meter (W/m2) and kilograms per square meter (kg/s3) are the units used in the SI system. With waves like acoustic waves (sound) or electromagnetic waves like light or radio waves, intensity is most usually employed to describe the average power transfer across one period of the wave. Other situations where energy is exchanged can also be described in terms of intensity. One could, for instance, figure out how much kinetic energy each drop of water from a sprinkler is carrying.

To learn more about intensity visit:

brainly.com/question/25556938

#SPJ4

4 0
1 year ago
If two negative charges of -2 C and -2 C are put 32,692 m apart from each other how much force will push them apart?
babunello [35]

Answer:

33.65 N

Explanation:

Force that will push them away is given from the equation;

F = Kq1•q2/r²

Where;

K is coulumbs constant = 8.99 × 10^(9) Nm²/C²

We are given;

q1 = q2 = -2 C

r = 32692 m

Thus;

F = 8.99 × 10^(9) × (-2) × (-2)/32692²

F ≈ 33.65 N

6 0
3 years ago
It takes Harry 38s to walk from x1 = -14m to x2 = -52m . What is his velocity?
Alina [70]
Initial distance from which Harry starts to walk (x1) = - 14 meter
Final distance up to which Harry walks (x2) = - 52 meter
Time taken by Harry to walk from x1 to x2 = 38 second
Then
Velocity = (x2 - x1)/Time taken
             = [- 52 - (-14)]/38 meter/second
             = (-52 + 14)/38
             = -(38/38) meter/second
             = -1 meter/second.
So the velocity at which Harry walks is -1 meter per second. Hope you are satisfied with the procedure and the procedure is also clear enough for you.
3 0
3 years ago
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