A sound wave in water has an intensity of 1.00 × 10−3 W/m2. The density of water is 1,000 kg/m3 and the speed of sound in water is 1,482 m/s. The pressure amplitude of the sound wave is

A) 60.2 N/m2. B) 54.4 N/m2. C) 49.5 N/m2. D) 42.5 N/m2. E) 39.5 N/m2. A) 60.2 N/m2. B) 54.4 N/m2. C) 49.5 N/m2. D) 42.5 N/m2. E) 39.5 N/m2.

The bulk modulus of water is 0.210 × 1010 N/m2 and the density is 1000 kg/m3. The speed of sound in water is

A) 1,450 m/s. B) 2,150 m/s. C) 2,490 m/s. D) 2,750 m/s. E) 3,100 m/s. A) 1,450 m/s. B) 2,150 m/s. C) 2,490 m/s. D) 2,750 m/s. E) 3,100 m/s.

A sound wave in air has an intensity of 1.00 × 10−3 W/m2. The density of air is 1.29 kg/m3 and the speed 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.

Exam 12: Sound | Examlex

Sound traveling in air at 23^°C enters a cold front where the air temperature is 2^°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 speed of sound in air at 20^°C is 343 m/s.

(Multiple Choice)

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Question 41

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° 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 is 340 m/s.

(Multiple Choice)

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Question 42

A bat is flying toward a cave wall. If it hears reflected sound of frequency 60.9 kHz, what is its flying speed, assuming it emits sound at 52.0 kHz? The speed of sound is 341.5 m/s.

(Multiple Choice)

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Question 43

A 40.0 cm long organ pipe is filled with air and is open at both ends. The speed of sound in air at 0°C is 331 m/s. If the temperature of the air decreases by 10°C, then what is the frequency of the fundamental mode?

(Multiple Choice)

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Question 44

Pianos are usually strung with multiple identical wires sounding each note. If two wires that are each 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?

(Multiple Choice)

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Question 45

A 60.0 cm long organ pipe is filled with air at 15°C and is open at both ends. The speed of sound in air at 0°C is 331 m/s. Another 60.0 cm long organ pipe is filled with air at 25.0°C and is open at both ends. What is the beat frequency between the second modes of the two organ pipes?

(Multiple Choice)

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Question 46

A block holding a ringing tuning fork is attached to a wall by a spring. The block oscillates back and forth 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 of the spring? The speed of sound is 340 m/s.

(Multiple Choice)

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Question 47

A sound wave in water has an intensity of 1.00 × 10⁻³ W/m². The density of water is 1,000 kg/m³ and the speed of sound in water is 1,482 m/s. The pressure amplitude of the sound wave is

(Multiple Choice)

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Question 48

The intensity of a sound wave is directly proportional to

(Multiple Choice)

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Question 49

A sound wave radiates from a source uniformly 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

(Multiple Choice)

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Question 50

A string with a mass per length of 2.00 g/m is stretched with a force of 120 N between two points that are 0.400 m apart. The fundamental frequency of the stretched string is in tune with the frequency of the second mode of an organ pipe filled with air at −20°C and open at both ends. The speed of sound in air at 0^°C is 331 m/s. What is the length of the organ pipe?

(Multiple Choice)

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Question 51

An organ pipe is open at one end and closed at the other. The frequency of the third mode is 300 Hz higher than the frequency of the second mode. If the speed of sound is 345 m/s, then what is the length of the organ pipe?

(Multiple Choice)

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Question 52

The bulk modulus of water is 0.210 × 10¹⁰ N/m² and the density is 1000 kg/m³. The speed of sound in water is

(Multiple Choice)

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Question 53

A sound wave in air has an intensity of 1.00 × 10⁻³ W/m². The density of air is 1.29 kg/m³ and the speed of sound in air is 331 m/s. The pressure amplitude of the sound wave is

(Multiple Choice)

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Question 54

The speed of sound is usually greatest in a

(Multiple Choice)

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Question 55

A 50.0 cm long organ pipe is filled with air and is open at both ends. The speed of sound in air at 0°C is 331 m/s. What is the frequency of the second mode?

(Multiple Choice)

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(78)

Question 56

A string with a mass per length of 2.00 g/m is stretched with a force of 150 N between two points that are 0.500 m apart. The fundamental frequency of the stretched string is in tune with the fundamental frequency of an organ pipe filled with air and open at both ends. The speed of sound in air at 0°C is 331 m/s. What is the length of the organ pipe?

(Multiple Choice)

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Question 57

The sound of a band is rated as 50 dB at a distance of 30.0 m. What is the sound intensity level of the band when one is 10.0 m from the band?

(Multiple Choice)

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Question 58

An ambulance is generating a siren sound at a frequency of 2,400 Hz. The speed of sound is 345.0 m/s. The observer is traveling at a velocity of 24.00 m/s toward the ambulance and the ambulance is traveling at a velocity of 20.00 m/s toward the observer. What is the frequency of the siren perceived by the observer?

(Multiple Choice)

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Question 59

The speed of sound in air at 0°C is 331 m/s. What is the speed of sound in air at a temperature of 30°C?

(Multiple Choice)

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Question 60

Showing 41 - 60 of 80

Exam 12: Sound

Sound traveling in air at 23°C enters a cold front where the air temperature is 2°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 speed of sound in air at 20°C is 343 m/s.

A bat is flying toward a cave wall. If it hears reflected sound of frequency 60.9 kHz, what is its flying speed, assuming it emits sound at 52.0 kHz? The speed of sound is 341.5 m/s.

A 40.0 cm long organ pipe is filled with air and is open at both ends. The speed of sound in air at 0°C is 331 m/s. If the temperature of the air decreases by 10°C, then what is the frequency of the fundamental mode?

A 60.0 cm long organ pipe is filled with air at 15°C and is open at both ends. The speed of sound in air at 0°C is 331 m/s. Another 60.0 cm long organ pipe is filled with air at 25.0°C and is open at both ends. What is the beat frequency between the second modes of the two organ pipes?

A sound wave in water has an intensity of 1.00 × 10−3 W/m2. The density of water is 1,000 kg/m3 and the speed of sound in water is 1,482 m/s. The pressure amplitude of the sound wave is

The intensity of a sound wave is directly proportional to

A sound wave radiates from a source uniformly 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

An organ pipe is open at one end and closed at the other. The frequency of the third mode is 300 Hz higher than the frequency of the second mode. If the speed of sound is 345 m/s, then what is the length of the organ pipe?

The bulk modulus of water is 0.210 × 1010 N/m2 and the density is 1000 kg/m3. The speed of sound in water is

A sound wave in air has an intensity of 1.00 × 10−3 W/m2. The density of air is 1.29 kg/m3 and the speed of sound in air is 331 m/s. The pressure amplitude of the sound wave is

The speed of sound is usually greatest in a

A 50.0 cm long organ pipe is filled with air and is open at both ends. The speed of sound in air at 0°C is 331 m/s. What is the frequency of the second mode?

The sound of a band is rated as 50 dB at a distance of 30.0 m. What is the sound intensity level of the band when one is 10.0 m from the band?

The speed of sound in air at 0°C is 331 m/s. What is the speed of sound in air at a temperature of 30°C?

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Sound traveling in air at 23^°C enters a cold front where the air temperature is 2^°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 speed of sound in air at 20^°C is 343 m/s.

A sound wave in water has an intensity of 1.00 × 10⁻³ W/m². The density of water is 1,000 kg/m³ and the speed of sound in water is 1,482 m/s. The pressure amplitude of the sound wave is

The bulk modulus of water is 0.210 × 10¹⁰ N/m² and the density is 1000 kg/m³. The speed of sound in water is

A sound wave in air has an intensity of 1.00 × 10⁻³ W/m². The density of air is 1.29 kg/m³ and the speed of sound in air is 331 m/s. The pressure amplitude of the sound wave is