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yarga [219]
2 years ago
6

Two girls stand 500m away from a tall wall

Physics
1 answer:
Mama L [17]2 years ago
4 0

From the calculations, the speed of sound in this case is 16.9 m/s.

<h3>What is an echo?</h3>

The term echo has to do with the reflection of sound waves. Sound is a mechanical wave.

we know that the speed of sound is obtained from;

V = 2x/t

x = distance covered

t = time taken

V = 2(500)/59

v = 16.9 m/s

The error in the experiment could come from;

  • Lack of precise time measurement
  • Error can also arise from the environment of the experiment

Learn more about echo:brainly.com/question/9527413

#SPJ1

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A box-shaped metal can has dimensions 5 in. by 19 in. by 4 in. high. All of the air inside the can is removed with a vacuum pump
GuDViN [60]

Answer:

The force is  F  =  1397 lb

Explanation:

From the question we are told that

    The length of the box is  l  =  19 \ in

    The width of the box is  w =  5 \ in

     The height is  h  =  4\ in

The pressure experience on one of the sides is mathematically represented as

     p = \frac{F}{A}

Where A is the area of the box which is mathematically evaluated as

    A =  l * w

substituting values

     A =  5 *19

      A = 95 \ in^2

This pressure is equivalent to the atmospheric pressure which has a constant value of  p = 14.7 pi

This implies that

        14.7  = \frac{F}{95}

=>   F  =  14.7 *95

=>    F  =  1397 lb

       

5 0
3 years ago
PLEASE HELP GIVING BRAINLIEST ANSWER
Rasek [7]
Potential energy is an object’s stored energy when it is not moving. Kinetic energy is an object’s energy in motion. You can’t be both moving and not moving at the same time, so PE and KE cannot be equal.
7 0
3 years ago
Using this illustration, what is the chemical formula
forsale [732]

Answer:la primera o la tercera

Explanation:

Porque son 3 átomos en uno

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2 years ago
What shape is the graph produced by a force vs acceleration graph?
hammer [34]

The answer to the question<u> What shape is the graph produced by a force vs acceleration graph</u> is A. Linear

Since Force, F = ma where m = mass and a = acceleration. For constant mass, F ∝ a. That is, F is directly proportional to acceleration, a.

Since this is a linear relationship, the graph of force vs acceleration will be linear.

The answer to the question<u> What shape is the graph produced by a force vs acceleration graph</u> is A. Linear

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brainly.com/question/24322515

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Answer:

its an antique physics apparatus for demonstrating acoustic standing waves in a tube.

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