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Anna71 [15]
3 years ago
6

The change in frequency of a wave as its source moves in relation to an observer.

Physics
1 answer:
denis-greek [22]3 years ago
8 0

Answer: B) Frequency

Explanation:

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Explanation:

They strengthen your legs!

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How long does it take an automobile traveling 72.5 km/h to become even with a car that is traveling in another lane at 54.5 km/h
Novosadov [1.4K]

Answer:

7.83

Explanation:

Just using the speed ,distance and time relation..Let time be T

Use this formula and find the distance covered by automobile .

Do same for car ..

and at last subtract the distance of automobile to car =141.

i.e (Distance of automobile -Dist.of car )=141

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3 years ago
The sun doesn't set during what season and at what latitude?
Dahasolnce [82]

Answer: summer and greater than 66°N

Explanation:

Summer is the most appropriate season in which the sun does not set. It is a typical situation for the Arctic Circle. It is the latitude in which the sun does not set in the day and typically during the month of July. The north of this circle is a period of sunshine which last for a period of about six months in the North Pole. Summer never rises in the winter solstice (December).

4 0
3 years ago
Q1) An average force of 50.0 N is exerted on a 4.0-kg cart for 2.0 seconds.
lozanna [386]
<h3>a. The impulse</h3>

The impulse is 100.0 Ns

The impulse I = Ft where

  • F =average force = 50.0 N and
  • t = time = 2.0 s

Substituting these values into the equation, we have

I = Ft

I = 50.0 N × 2.0 s

I = 100.0 Ns

The impulse is 100.0 Ns

<h3>b. Change in momentum</h3>

The change in momentum is 100 kgm/s

Since change in momentum Δp = I where I = impulse.

Since I = 100.0 Ns,

Substituting this into the equation, we have

Δp = I

= 100.0 Ns

= 100 kgm/s

The change in momentum is 100 kgm/s

<h3>c. Mass's change in velocity</h3>

The change in velocity is 25.0 m/s

Since change in momentum Δp = mΔv where

  • m = mass = 4.0 kg and
  • Δv = change in velocity.

Making Δv subject of the formula, we have

Δv = Δp/m

Substituting the values of the variables into the equation, we have

Δv = Δp/m

Δv = 100.0 kgm/s/4.0 kg

Δv = 25.0 m/s

The change in velocity is 25.0 m/s

Learn more about impulse here:

brainly.com/question/25700778

3 0
3 years ago
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