The variation in the pressure of helium gas,measured from its equilibrium value,is given by $\Delta$P = 2.9 *10 - 5 cos (6.20x- 3 000t)where x and t have units m and s,and $\Delta$P is measured in N/m2.Determine the wavelength (in m)of the wave.

A) 1 500 B) 0.32 C) 477 D) 1.01 E) 0.50 A) 1 500 B) 0.32 C) 477 D) 1.01 E) 0.50

The wavelength of light visible to the human eye is on the order of 5 *10 - 7 m.If the speed of light in air is 3 * 108 m/s,find the frequency of the lightwave.

A) 3 *107 Hz B) 4 * 109 Hz C) 5 * 1011 Hz D) 6* 1014 Hz E) 4 * 1015 Hz A) 3 *107 Hz B) 4 * 109 Hz C) 5 * 1011 Hz D) 6* 1014 Hz E) 4 * 1015 Hz

Exam 13: Mechanical Waves

A person standing in the street is unaware of a bird dropping that is falling from a point directly above him with increasing velocity.If the dropping were producing sound of a fixed frequency,as it approaches the person would hear the sound

(Multiple Choice)

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Question 41

A boat sounds a fog horn on a day when both the sea water and the air temperature are 25.0 $\degree$ C.The speed of sound in sea water is 1 533 m/s.How much earlier (in s)does a dolphin 1 000 m from the source hear the sound than a person in a boat that is also 1 000 m distant? (Ignore the time it takes the sound to reach the water surface. )

(Multiple Choice)

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Question 42

Transverse waves are traveling on a 1.00-m long piano string at 500 m/s.If the points of zero vibration occur at one-half wavelength (where the string is fastened at both ends),find the frequency of vibration.

(Multiple Choice)

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Question 43

The variation in the pressure of helium gas,measured from its equilibrium value,is given by $\Delta$ P = 2.9 *10 ^- ⁵ cos (6.20x- 3 000t)where x and t have units m and s,and $\Delta$ P is measured in N/m².Determine the wavelength (in m)of the wave.

(Multiple Choice)

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Question 44

If y = 0.02 sin (30x - 400t)(SI units),the wave number is

(Multiple Choice)

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Question 45

The wavelength of light visible to the human eye is on the order of 5 10 ^- ⁷ m.If the speed of light in air is 3 10⁸ m/s,find the frequency of the lightwave.

(Multiple Choice)

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Question 46

The wave equation is written down in an exam as $\frac { d ^ { 2 } y } { d x ^ { 2 } } = v ^ { 2 } \frac { d ^ { 2 } y } { d t ^ { 2 } }$ From dimensional considerations we see that

(Multiple Choice)

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Question 47

The fundamental frequency of a above middle C on the piano is 440 Hz.This is the tenor high A,but a convenient note in the mid-range of women's voices.When we calculate the wavelength,we find that it is

(Multiple Choice)

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Question 48

You are holding on to one end of a long string that is fastened to a rigid steel light pole.After producing a wave pulse that was 5 mm high and 4 cm wide,you want to produce a pulse that is 4 cm wide but 7 mm high.You must move your hand up and down once,

(Multiple Choice)

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Question 49

For the transverse wave described by $y = 0.15 \sin \left[ \frac { \pi } { 16 } ( 2 x - 64 t ) \right] \text { (SI units) }$ ,determine the maximum transverse speed of the particles of the medium.

(Multiple Choice)

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Question 50

If y = 0.02 sin (30x - 400t)(SI units),the velocity of the wave is

(Multiple Choice)

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Question 51

Earthquake waves are classified as P waves and S waves.Which of the following statements is true about these waves?

(Multiple Choice)

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Question 52

A truck moving at 36 m/s passes a police car moving at 45 m/s in the opposite direction.If the frequency of the siren is 500 Hz relative to the police car,what is the frequency heard by an observer in the truck after the police car passes the truck? (The speed of sound in air is 343 m/s. )

(Multiple Choice)

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Question 53

Bats can detect small objects such as insects that are of a size approximately that of one wavelength.If bats emit a chirp at a frequency of 60 kHz,and the speed of sound in air is 340 m/s,what is the smallest size insect they can detect?

(Short Answer)

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Question 54

A student attaches a length of nylon fishing line to a fence post.She stretches it out and shakes the end of the rope in her hand back and forth to produce waves on the line.The most efficient way for her to increase the wavelength is to

(Multiple Choice)

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Question 55

A 100-m long transmission cable is suspended between two towers.If the mass density is 2.01 kg/m and the tension in the cable is 3.00 * 10⁴ N,what is the speed of transverse waves on the cable?

(Multiple Choice)

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Question 56

Showing 41 - 56 of 56

Exam 13: Mechanical Waves

A person standing in the street is unaware of a bird dropping that is falling from a point directly above him with increasing velocity.If the dropping were producing sound of a fixed frequency,as it approaches the person would hear the sound

Transverse waves are traveling on a 1.00-m long piano string at 500 m/s.If the points of zero vibration occur at one-half wavelength (where the string is fastened at both ends),find the frequency of vibration.

The variation in the pressure of helium gas,measured from its equilibrium value,is given by Δ\DeltaΔ P = 2.9 *10 - 5 cos (6.20x- 3 000t)where x and t have units m and s,and Δ\DeltaΔ P is measured in N/m2.Determine the wavelength (in m)of the wave.

If y = 0.02 sin (30x - 400t)(SI units),the wave number is

The wavelength of light visible to the human eye is on the order of 5 *10 - 7 m.If the speed of light in air is 3 * 108 m/s,find the frequency of the lightwave.

The wave equation is written down in an exam as d2ydx2=v2d2ydt2\frac { d ^ { 2 } y } { d x ^ { 2 } } = v ^ { 2 } \frac { d ^ { 2 } y } { d t ^ { 2 } }dx2d2y​=v2dt2d2y​ From dimensional considerations we see that

The fundamental frequency of a above middle C on the piano is 440 Hz.This is the tenor high A,but a convenient note in the mid-range of women's voices.When we calculate the wavelength,we find that it is

You are holding on to one end of a long string that is fastened to a rigid steel light pole.After producing a wave pulse that was 5 mm high and 4 cm wide,you want to produce a pulse that is 4 cm wide but 7 mm high.You must move your hand up and down once,

For the transverse wave described by y=0.15sin⁡[π16(2x−64t)] (SI units) y = 0.15 \sin \left[ \frac { \pi } { 16 } ( 2 x - 64 t ) \right] \text { (SI units) }y=0.15sin[16π​(2x−64t)] (SI units) ,determine the maximum transverse speed of the particles of the medium.

If y = 0.02 sin (30x - 400t)(SI units),the velocity of the wave is

Earthquake waves are classified as P waves and S waves.Which of the following statements is true about these waves?

A truck moving at 36 m/s passes a police car moving at 45 m/s in the opposite direction.If the frequency of the siren is 500 Hz relative to the police car,what is the frequency heard by an observer in the truck after the police car passes the truck? (The speed of sound in air is 343 m/s. )

Bats can detect small objects such as insects that are of a size approximately that of one wavelength.If bats emit a chirp at a frequency of 60 kHz,and the speed of sound in air is 340 m/s,what is the smallest size insect they can detect?

A student attaches a length of nylon fishing line to a fence post.She stretches it out and shakes the end of the rope in her hand back and forth to produce waves on the line.The most efficient way for her to increase the wavelength is to

A 100-m long transmission cable is suspended between two towers.If the mass density is 2.01 kg/m and the tension in the cable is 3.00 * 104 N,what is the speed of transverse waves on the cable?

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The variation in the pressure of helium gas,measured from its equilibrium value,is given by $\Delta$ P = 2.9 *10 ^- ⁵ cos (6.20x- 3 000t)where x and t have units m and s,and $\Delta$ P is measured in N/m².Determine the wavelength (in m)of the wave.

The wavelength of light visible to the human eye is on the order of 5 10 ^- ⁷ m.If the speed of light in air is 3 10⁸ m/s,find the frequency of the lightwave.

The wave equation is written down in an exam as $\frac { d ^ { 2 } y } { d x ^ { 2 } } = v ^ { 2 } \frac { d ^ { 2 } y } { d t ^ { 2 } }$ From dimensional considerations we see that

For the transverse wave described by $y = 0.15 \sin \left[ \frac { \pi } { 16 } ( 2 x - 64 t ) \right] \text { (SI units) }$ ,determine the maximum transverse speed of the particles of the medium.

A 100-m long transmission cable is suspended between two towers.If the mass density is 2.01 kg/m and the tension in the cable is 3.00 * 10⁴ N,what is the speed of transverse waves on the cable?