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Oksana_A [137]
3 years ago
15

1 point

Physics
2 answers:
Sphinxa [80]3 years ago
7 0

Answer:

the answer is doppler effect

Explanation:

the doppler effect is the change in frequency of a wave in realation to an observer who is moving relative to the wave source. it is named after the austrian physicist christan doppler,who described the phenomenon in 1842. :) happy to help

Anna11 [10]3 years ago
5 0

Answer:

doppler effect

Explanation:

took the quiz

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An electric motor rotating a workshop grinding wheel at 1.06 102 rev/min is switched off. Assume the wheel has a constant negati
kvasek [131]

Answer:

t = 106π / 30*2.1

Explanation:

w_{i} = 1.06*10^{2}    => 106

    => 106 x 2π/60

    => 106/30π

∝ = -2.1 rad/sec²

w_{f} => 0

w_{f} = w_{i} + ∝t

∴ (w_{f} - w_{i}) / ∝ = t

t = 106π / 30*2.1

6 0
3 years ago
Through both refraction and diffraction, the atmosphere alters the apparent speed and, to a lesser extent, the direction of the
musickatia [10]

Answer:

The Ionospheric Effect

Explanation:

One of the largest errors in GPS positioning is attributable to the atmosphere. The long, relatively unhindered travel of the GPS signal through the virtual vacuum of space changes as it passes through the earth’s atmosphere. Through both refraction and diffraction, the atmosphere alters the apparent speed and, to a lesser extent, the direction of the signal. This causes an apparent delay in the signal's transit from the satellite to the receiver.

4 0
3 years ago
If you were to build a pipe organ with open-tube pipes spanning the range from 25 hz to 19 khz. The speed of sound in air is 343
Dennis_Churaev [7]

The length of the shortest pipe which is l2 will be 0.018m

<h3>What is Length?</h3>

This is defined as the measurement or extent of a substance from end to end. The formula is shown below:

L = v/f where v is speed , f is frequency

f1 = 25hz , f2 = 19khz

The length for both sides is seen below:

l1 = 343/25 = 13.72m

l2 = 343/19000 = 0.018m.

The length of the shortest pipe is therefore 0.018m.

Read more about Length here brainly.com/question/24259483

3 0
2 years ago
The theory of continental drift proposes that the Earth's continents may have once been united as a supercontinent but have drif
JulijaS [17]

Answer:

Alfred Wegener proposed that the continents were once united into a single supercontinent named Pangaea, meaning all earth in ancient Greek. He suggested that Pangaea broke up long ago and that the continents then moved to their current positions. He called his hypothesis continental drift.

Explanation:

hope it was helpful

6 0
3 years ago
Read 2 more answers
If the designers of submarines do not appropriately account for hydrostatic pressure,
andre [41]

Answer:

A) the pressure could crush the submarine

Explanation:

  • The submarines are mainly used for defense purposes.
  • In world war 1 and 2 the submarines played a vital role in the war.
  • The submarines work according to the principle of buoyancy.
  • According to this principle, when seawater is filled inside the tank in a required amount, the submarines sink.
  • When the seawater is expelled, the submarine rises to above the sea.
  • Most of the time, it dives deep into the sea, the hydrostatic pressure should be taken into account.
  • If the hydrostatic pressure is not considered, the pressure could crush the submarine.
7 0
3 years ago
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