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Svetach [21]
3 years ago
5

Question 1 The orange line is measuring the

Physics
1 answer:
11111nata11111 [884]3 years ago
4 0

Answer:

Approximately 4.5 square miles

Explanation:

(surrounding van Nuys and sepulveda stations) and one measuring approximately 2.85 square miles ( surrounding north Hollywood Station)

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The speed of sound at sea level is normally about 340 m/s. A stationary fire alarm has a frequency of 15,000 Hz. An observer run
Musya8 [376]

Answer:

The velocity of the observer is 6.8 m/s

Explanation:

Doppler effect equation is given by the formula:

f'=\frac{v+v_o}{v-v_s} f\\\\where\ f'\ is \ the\ observed \ frequency=15300\ Hz,v_o\ is\ the\ velocity\ of\ the\ observer,\\v_s\ is\ the\ velocity\ of \ source=0,v\ is\ the\ velocity\ of\ sound=340\ m/s\ and\ f\ is\ actual\\frequency=15000\ Hz.\\\\substituting:\\\\15300=15000(\frac{340+v_o}{340} )\\\\340+v_o=346.8\\\\v_o=6.8\ m/sThe velocity of the observer is 6.8 m/s

3 0
3 years ago
What were the four pieces of evidence Alfred Wegener found to support his hypothesis about pangea?
sasho [114]

1 Same fossil in diff area

2 plate techtonics

3 same soil in diff area

4 they all fit like a giant puzzle

5 0
4 years ago
Which of the following is an example of a buoyant force acting on an object?
baherus [9]

Answer:

  1. option c theobject floats on top of a fluid
3 0
3 years ago
The main benefit you receive from using locomotor movements in a variety of activities is? Question 3 options:
Helga [31]

Answer:

run walk jump digk pwss botch

Explanation:

fudge

4 0
3 years ago
Read 2 more answers
Rank the band gap energies of the following solids. Metal insulator semiconductor superconductor I. large band gap energy II. sm
Anon25 [30]

Answer:

Metal - smallest band gap energy

insulators -  large band gap energies

semiconductor -  Band gap of intermediate energies

superconductor cooper pair theory is applied for calculating gap energies.

Explanation:

Metal - smallest band gap energy

it is due to the fact that valence and conduction bond in metal are in overlapped conditioned. Therefore showing zero gap energies

insulators -  large band gap energies

insulator has high band gap

semiconductor -  Band gap of intermediate energies

semi conductor has gap of intermediate range

while for superconductor cooper pair theory is applied for calculating gap energies.

5 0
4 years ago
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