True/False: If an object stays still, but the observer moves, the Doppler Effect is still observered

Physics

2 answers:

Musya8 [376]3 years ago

6 0

The answer is to your question is true....plain and simple

Vladimir79 [104]3 years ago

3 0

Well, Harry, what you said is not necessarily true the way you said it.
But we know what you mean, and what you meant to say is true.

The Doppler effect is observed if there is relative radial motion
between an object and an observer AND if the object happens
to be putting out sound or light in the observer's direction.

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tester [92]

Answer:

The total amount of water that enters the tank is:

250 gal/min + 100 gal/min = 350gal/min.

Then, if the level of the water remains constant, this means that the water leaves the tank at a rate of 350gal/min.

We know that the diameter of the pipe is 8 inches, then the area of the pipe is:

A = pi*(d/2)^2 = 3.14*(4in)^2 = 50.24in^2

now, the flow can be calculated as:

Q = v*A = (velocity*area)

if we want to write our velocity in inches per minute, then we need to write the entering flow in cubic inches:

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then:

350gal/min = (350*231) in^3/min = 80,850 in^3/min.

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v = (80,850in^3/min)/50.24in^2 = 1609.3 in/min.

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3 years ago

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mars1129 [50]

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2 years ago

The amount of friction divided by the weight of an object forms a unit less number called the

Romashka [77]

Answer:

Coefficient of friction.

Explanation:

The amount of friction divided by the weight of an object is equal to the coefficient of friction. It is a dimensional less number. It can be given by :

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