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3 years ago

CClassify each characteristic of sound waves.

Physics

2 answers:

pentagon [3]3 years ago

6 0

Explanation :

The characteristics of sound waves are as follows :

(1) Intensity : The power per unit area carried by a sound wave is called as the intensity of wave. So, $I=\dfrac{P}{A}$ . Its unit is $W/m^2$ .

(2) Loudness : Loudness means how the listener perceives the sound intensity. It is determined by the intensity of sound waves.

(3) Frequency : The number of to and fro oscillations of sound wave per unit time is called as its frequency. Its unit is Hz or Hertz.

(4) Pitch : Pitch means the quality of sound. It is closely related to frequency. For high pitch, the number of waves are more.

Alex787 [66]3 years ago

4 0

Explanation : Explain each characteristic of sound waves.

Intensity : the intensity of the sound wave is understand as the power carry by sound wave per unit area in the direction perpendicular to that area.

Loudness : loudness is the quality of the loud and soft of the sound wave.

Frequency : Human normal hear sound frequency between 20 Hz to kHz.

Pitch : Pitch is the quality of low and high of sound wave . pitch relates to the frequency of the slowest vibration in the sound wave for simple sound.

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Which object has the most gravitational potential energy?

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Answer: An 8 kg book at a height of 3 m has the most gravitational potential energy.

Explanation:

Gravitational potential energy is the product of mass of object, height of object and gravitational field.

So, formula to calculate gravitational potential energy is as follows.

U = mgh

where,

m = mass of object

g = gravitational field = $9.81 m/s^{2}$

h = height of object

(A) m = 5 kg and h = 2m

Therefore, its gravitational potential energy is calculated as follows.

$U = mgh\\= 5 kg \times 9.81 m/s^{2} \times 2 m\\= 98.1 J (1 J = kg m^{2}/s^{2})$

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Therefore, its gravitational potential energy is calculated as follows.

$U = mgh\\= 8 kg \times 9.81 m/s^{2} \times 2 m\\= 156.96 J (1 J = kg m^{2}/s^{2})$

(C) m = 8 kg and h = 3 m

Therefore, its gravitational potential energy is calculated as follows.

$U = mgh\\= 8 kg \times 9.81 m/s^{2} \times 3 m\\= 235.44 J (1 J = kg m^{2}/s^{2})$

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Therefore, its gravitational potential energy is calculated as follows.

$U = mgh\\= 5 kg \times 9.81 m/s^{2} \times 3 m\\= 147.15 J (1 J = kg m^{2}/s^{2})$

Thus, we can conclude that an 8 kg book at a height of 3 m has the most gravitational potential energy.

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