A sound wave in air has an intensity of 1.00 $\times$ 10-3 Watts/m2.The density of air is 1.29 kg/m3 and the velocity of sound in air is 331 m/s.The pressure amplitude of the sound wave is

A) 0.740 N/m2. B) 0.821 N/m2. C) 0.850 N/m2. D) 0.924 N/m2. E) 0.980 N/m2. A) 0.740 N/m2. B) 0.821 N/m2. C) 0.850 N/m2. D) 0.924 N/m2. E) 0.980 N/m2. D

The speed of sound in air at 0$^{\circ}$C is 331 m/s.If the density of air is 1.29 kg/m3,then what is the bulk modulus of air?

A) 1.15 $\times$ 105 N/m2 B) 1.41 $\times$ 105 N/m2 C) 1.68 $\times$ 105 N/m2 D) 2.03 $\times$ 105 N/m2 E) 2.50 $\times$ 105 N/m2 A) 1.15 $\times$ 105 N/m2 B) 1.41 $\times$ 105 N/m2 C) 1.68 $\times$ 105 N/m2 D) 2.03 $\times$ 105 N/m2 E) 2.50 $\times$ 105 N/m2

Exam 12: Sound | Examlex

A 30.0 cm long brass rod is suspended at the ends by long strings.The rod is struck at one end parallel to the rod and causes the rod to vibrate longitudinally with the ends free.(Y = 9.00 $\times$ 10¹⁰ N/m², S = 3.50 $\times$ 10¹⁰ N/m², B = 6.70 $\times$ 10¹⁰ N/m²,density = 8,470 kg/m³)The frequency of the vibration is

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Question 1

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A sound wave in air has an intensity of 1.00 $\times$ 10^-3 Watts/m².The density of air is 1.29 kg/m³ and the velocity of sound in air is 331 m/s.The pressure amplitude of the sound wave is

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Question 2

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A sound wave radiates from a source in all directions.If the power of the sound source is 200 watts,then the intensity level of the sound wave 1000 m from the source is (in dB)

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Question 3

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A string with a mass per length of 2.00 g/m is stretched between two points that are 0.400 m apart.The second mode frequency of the stretched string is 50.0 Hz lower than the third mode frequency.What is the tension in the string?

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Question 4

A block holding a ringing tuning fork oscillates back and forth,attached to a wall by a spring of spring on a horizontal,frictionless surface,with amplitude 17 cm.The mass of the tuning fork and block together is 0.75 kg.An observer who is situated so that the block's direction of motion is either directly towards or away from him notes that the frequency he hears varies between 174 and 178 Hz.What is the spring constant for the spring ? The speed of sound at the time of the experiment is 340 m/s.

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Question 5

A 30 cm long organ pipe is filled with air and is open at one end and closed at the other.The velocity of sound in air at 0 $^{\circ}$ C is 331 m/s.What is the wavelength of the second mode?

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Question 6

The sound of a jet engine is given as 120 dB.What is the intensity of the jet sound wave?

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Question 7

A 1024 Hz tuning fork is dangled at the end of a string such that its center of mass is 1.2 m below the point at which the other end of the string is attached to door frame,making a pendulum of sorts.The tuning fork may be treated as a point mass for the purposes of this problem.If the pendulum is brought to an amplitude of 22 $^{\circ}$ and released,what is the range of frequencies heard by an observer standing in the plane of the pendulum's motion? The speed of sound in this case is 340 m/s.

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Question 8

A string with a mass per length of 2.00 g/m is stretched between two points that are 0.400 m apart.The third mode frequency of the stretched string is 20.0 Hz lower than the fourth mode frequency.What is the tension in the string?

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Question 9

A 1024 Hz tuning fork is dangled at the end of a string such that its center of mass is 1.2 m below the point at which the other end of the string is attached to door frame,making a pendulum of sorts.The tuning fork may be treated as a point mass for the purposes of this problem.If the pendulum is brought to a maximum angle and released.If the range of frequencies heard by an observer standing in the plane of the pendulum's motion is 1020-1028 Hz,what is the angle to which the pendulum was raised? The speed of sound in this case is 340 m/s.

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Question 10

A bat is flying toward a cave wall at 27.0 m/s.What is the frequency of the reflected sound that it hears,assuming it emits sound at 52.0 kHz? The speed of sound is 341.5 m/s.

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Question 11

Two piano strings are simultaneously played - their mass and length are identical,but the tensions differ.If the first string resonates with a fundamental frequency of 330 Hz,and its tension is 1.2% greater than that of the second string,what is the fundamental frequency of the second string?

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Question 12

An ambulance is generating a siren sound at a frequency of 2,400 Hz.The velocity of sound is 345.0 m/s.If the observer is traveling at a velocity of 24.00 m/s toward the stationary ambulance,then what is the frequency of the siren perceived by the observer?

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Question 13

Pianos are usually strung with multiple identical wires sounding each note.If two wires that each are meant to have a fundamental frequency of 283.5 Hz are played,and a beat frequency of 1.5 Hz is heard,by what fraction must the string which is lower in frequency than the other have its tension adjusted?

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Question 14

The intensity of a sound wave is directly proportional to

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Question 15

The speed of sound in air at 0 $^{\circ}$ C is 331 m/s.If the density of air is 1.29 kg/m³,then what is the bulk modulus of air?

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Question 16

Sound traveling in air at 23 $^{\circ}$ C enters a cold front where the air temperature is 2 $^{\circ}$ C.If the frequency of the sound is 1500 Hz,what is the difference in the wavelength between the cold air and the warm air?

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Question 17

The sound of a bird singing is given as 5 dB.What is the intensity of the sound of a bird singing?

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Question 18

A 3.0 m organ pipe is open at both ends and contains air.The velocity of sound in air is 331 m/s.What is the wavelength of the lowest frequency mode?

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Question 19

A 40.0 cm long organ pipe is filled with air and is open at both ends.The velocity of sound in air at 0 $^{\circ}$ C is 331 m/s.What is the frequency of the fundamental mode?

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Question 20

Showing 1 - 20 of 90

Exam 12: Sound

A sound wave in air has an intensity of 1.00 ×\times× 10-3 Watts/m2.The density of air is 1.29 kg/m3 and the velocity of sound in air is 331 m/s.The pressure amplitude of the sound wave is

A sound wave radiates from a source in all directions.If the power of the sound source is 200 watts,then the intensity level of the sound wave 1000 m from the source is (in dB)

A string with a mass per length of 2.00 g/m is stretched between two points that are 0.400 m apart.The second mode frequency of the stretched string is 50.0 Hz lower than the third mode frequency.What is the tension in the string?

A 30 cm long organ pipe is filled with air and is open at one end and closed at the other.The velocity of sound in air at 0 ∘^{\circ}∘ C is 331 m/s.What is the wavelength of the second mode?

The sound of a jet engine is given as 120 dB.What is the intensity of the jet sound wave?

A string with a mass per length of 2.00 g/m is stretched between two points that are 0.400 m apart.The third mode frequency of the stretched string is 20.0 Hz lower than the fourth mode frequency.What is the tension in the string?

A bat is flying toward a cave wall at 27.0 m/s.What is the frequency of the reflected sound that it hears,assuming it emits sound at 52.0 kHz? The speed of sound is 341.5 m/s.

Two piano strings are simultaneously played - their mass and length are identical,but the tensions differ.If the first string resonates with a fundamental frequency of 330 Hz,and its tension is 1.2% greater than that of the second string,what is the fundamental frequency of the second string?

An ambulance is generating a siren sound at a frequency of 2,400 Hz.The velocity of sound is 345.0 m/s.If the observer is traveling at a velocity of 24.00 m/s toward the stationary ambulance,then what is the frequency of the siren perceived by the observer?

The intensity of a sound wave is directly proportional to

The speed of sound in air at 0 ∘^{\circ}∘ C is 331 m/s.If the density of air is 1.29 kg/m3,then what is the bulk modulus of air?

Sound traveling in air at 23 ∘^{\circ}∘ C enters a cold front where the air temperature is 2 ∘^{\circ}∘ C.If the frequency of the sound is 1500 Hz,what is the difference in the wavelength between the cold air and the warm air?

The sound of a bird singing is given as 5 dB.What is the intensity of the sound of a bird singing?

A 3.0 m organ pipe is open at both ends and contains air.The velocity of sound in air is 331 m/s.What is the wavelength of the lowest frequency mode?

A 40.0 cm long organ pipe is filled with air and is open at both ends.The velocity of sound in air at 0 ∘^{\circ}∘ C is 331 m/s.What is the frequency of the fundamental mode?

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A sound wave in air has an intensity of 1.00 $\times$ 10^-3 Watts/m².The density of air is 1.29 kg/m³ and the velocity of sound in air is 331 m/s.The pressure amplitude of the sound wave is

A 30 cm long organ pipe is filled with air and is open at one end and closed at the other.The velocity of sound in air at 0 $^{\circ}$ C is 331 m/s.What is the wavelength of the second mode?

The speed of sound in air at 0 $^{\circ}$ C is 331 m/s.If the density of air is 1.29 kg/m³,then what is the bulk modulus of air?

Sound traveling in air at 23 $^{\circ}$ C enters a cold front where the air temperature is 2 $^{\circ}$ C.If the frequency of the sound is 1500 Hz,what is the difference in the wavelength between the cold air and the warm air?

A 40.0 cm long organ pipe is filled with air and is open at both ends.The velocity of sound in air at 0 $^{\circ}$ C is 331 m/s.What is the frequency of the fundamental mode?