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yanalaym [24]
2 years ago
15

Question 1 of 10

Physics
1 answer:
Debora [2.8K]2 years ago
7 0

Answer:

V = λ f    (wavelength * frequency)

λ  = V / f = 343 m/s / 262 / s = 1.3 m

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An ambulance is rapidly approaching you at a stop light. What happens to the frequency and pitch of the sound as the ambulance d
vagabundo [1.1K]

Answer:

A )

Explanation:

This change in frequency observation occur due to doppler effect

if the wave source moves,In the time between one wave peak being emitted and the next, the source will have moved so that the shells will no longer be concentric. The wavefronts will get closer together in front of the source as it travels and will be further apart behind it.  (see the graph)

when the person standing still in front of the ambulance, he will observe a <em>higher frequency </em>than before as the source travels towards them.

f_(observed)=\frac{V_(wave)}{V_(wave)-V_(source)} *f_(original)

The pitch we hear depends on the frequency of the sound wave.

A high frequency corresponds to a high pitch

as we hear a higher frequency , it makes the <em>pitch higher</em> too

5 0
3 years ago
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Two bicyclists are accelerating forward at the same rate. The net force on
DiKsa [7]

Answer:

answer B

i just took it

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In your own words explain why the thickness and length of a wire could effect the flow of electrons​
agasfer [191]

Answer:

(you can use my exact words) The length and thickness would make it so that the electrons move differently than they would a shorter and thinner wire because with the wire being longer the electrons would have a longer trip and with the wire being thicker the electrons would be more spread out and move be able to move more freely

8 0
3 years ago
What is a nebula made from?
BaLLatris [955]

Answer: Its made from dust and gas

Explanation:

6 0
3 years ago
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The average kinetic energy of the particles in a sample of matter is expressed as
vredina [299]

Answer: 3/2 ×KT

Explanation: The average kinetic energy of particles (molecules) in a simple matter is given as

K.E = 3/2 ×KT

where K = boltzman constant and and T = absolute temperature.

7 0
4 years ago
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