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PolarNik [594]
3 years ago
9

A train is approaching the station. Explain what happens to the frequency of the sound as the train draws closer. What do you he

ar?
Physics
2 answers:
Hitman42 [59]3 years ago
3 0
The frequency of sound waves goes up, so the pitch goes up as well. More frequent=higher pitched
Assoli18 [71]3 years ago
3 0

Answer:

Frequency is more

Explanation:

If there is a apparent change in the frequency of sound due to the relative motion between the observer and the source, it is called doppler effect.

The formula for the doppler effect is

f' = \frac{v-v_{o}}{v-v_{s}}f

Where, f be the original frequency, f' be the apparent frequency, v be te speed of sound, v0 be the speed of observer and vs be the speed of source.

So, as observer at rest, vo = 0

f' = \frac{v}{v-v_{s}}f

Here, f' > f

So, the frequency of sound heared y the observer is more.

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riadik2000 [5.3K]

Answer:

I think they cross the line when they force sports into their child's life, and take away their choice of what they want to do so they essentially waste their childhood preparing for something that may never happen or they just don't get the opportunity to explore their artistic abilities.

Explanation:

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3 years ago
Pascal's Principle states that (a) If we apply pressure to a fluid in a sealed container, the pressure will be felt undiminished
nika2105 [10]

Answer:

a) If we apply pressure to a fluid in a sealed container, the pressure will be felt undiminished at every point in the fluid and on the walls of the container.

Explanation:

Pascal´s Principle can be applied in the hydraulic press:

If we apply a small force (F1) on a small area piston A1, then, a pressure (P) is generated that is transmitted equally to all the particles of the liquid until it reaches a larger area piston and therefore a force (F2) can be exerted that is proportional to the area(A2) of the piston.

P=F/A

P1=P2

F1/ A1= F2/ A2

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In an incompressible liquid, the volume and amount of mass does not vary when pressure is applied.

5 0
2 years ago
What is the definition of a volt in science?
OverLord2011 [107]
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How long does it take a glass of salt water to freeze than a glass of fresh water
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Hope this helps!
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