Exam 13: Vibrations and Waves

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Two springs,each with spring constant k,are attached end to end in a series fashion.A second pair of identical springs are also attached in series fashion.Then the pair of series attached springs are attached in parallel to each other.What is the effective spring constant of the resulting combination of springs?

(Multiple Choice)

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Question 41

A mass of 0.4 kg,hanging from a spring with a spring constant of 87 N/m,is set into an up-and-down simple harmonic motion.What is the speed of the mass when moving through a point at 0.05 m displacement? The starting displacement of the mass is 0.1 m from its equilibrium position.

(Multiple Choice)

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Question 42

Suppose a 0.9-kg mass on a spring that has been compressed 0.1 m has elastic potential energy of 1.1 J.What is the spring constant?

(Multiple Choice)

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Question 43

A string is strung horizontally with a fixed tension.A wave of frequency 90 Hz is sent along the string,and it has a wave speed of 55.1 m/s.Then a second wave,one of frequency 180 Hz,is sent along the string.What is the wave speed of the second wave?

(Multiple Choice)

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Question 44

If the frequency of a traveling wave train is increased by a factor of three in a medium where the speed is constant,which of the following is the result?

(Multiple Choice)

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Question 45

A mass of 0.4 kg,attached to a spring with a spring constant of 80 N/m,is set into simple harmonic motion.What is the magnitude of the acceleration of the mass when at its maximum displacement of 0.2 m from the equilibrium position?

(Multiple Choice)

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Question 46

When an object is moving in simple harmonic motion,which of the following is at a minimum when the displacement from equilibrium is zero?

(Multiple Choice)

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Question 47

A mass of 0.39 kg,hanging from a spring with a spring constant of 72 N/m,is set into an up-and-down simple harmonic motion.What is the speed of the mass when moving through the equilibrium point? The starting displacement from equilibrium is 0.14 m.

(Multiple Choice)

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Question 48

A mass on a spring vibrates in simple harmonic motion at a frequency of 3.9 Hz and an amplitude of 7.8 cm.If a timer is started when its displacement is a maximum (hence x = 7.8 cm when t = 0),what is the displacement of the mass when t = 3.4 s?

(Multiple Choice)

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Question 49

Which of the following is an example of a longitudinal wave?

(Multiple Choice)

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Question 50

Which one of the following quantities is at a maximum when an object in simple harmonic motion is at its maximum displacement?

(Multiple Choice)

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Question 51

Equal wavelength waves of amplitude 0.24 m and 0.16 m interfere with one another.What is the resulting minimum amplitude that can result?

(Multiple Choice)

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Question 52

Which is not an example of approximate simple harmonic motion?

(Multiple Choice)

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Question 53

The superposition principle has to do with which of the following?

(Multiple Choice)

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Question 54

A pendulum on the Earth has a period T.The acceleration of due to gravity on Mars is less than that on the Earth,and the acceleration due to gravity on the Moon is even less.Where would the period of an identical pendulum be the least?

(Multiple Choice)

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Question 55

When car shock absorbers wear out and lose their damping ability,what is the resulting oscillating behavior?

(Multiple Choice)

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Question 56

A mass on a spring vibrates in simple harmonic motion at a frequency of 4.2 Hz and an amplitude of 4.2 cm.If a timer is started when its displacement is a maximum (hence x = 4.2 cm when t = 0),what is the acceleration magnitude when t = 4 s?

(Multiple Choice)

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Question 57

A mass-spring system on a horizontal frictionless surface is set in simple harmonic motion with amplitude A.The mass is then doubled and the system is again set into simple harmonic motion with the same amplitude.Which of the following is true about the total mechanical energy of the system due to doubling the mass?

(Multiple Choice)

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Question 58

A mass on a spring vibrates in simple harmonic motion at a frequency of 2 Hz and an amplitude of 7 cm.If a timer is started when its displacement is a maximum (hence x = 7 cm when t = 0),what is the speed of the mass when t = 7 s?

(Multiple Choice)

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Question 59

A simple pendulum has a mass of 0.21 kg and a length of 1.9 m.It is displaced through an angle of 36° and then released.After a time,the maximum angle of swing is only 12°.How much energy has been lost to friction?

(Multiple Choice)

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Question 60

Showing 41 - 60 of 83

Exam 13: Vibrations and Waves

A mass of 0.4 kg,hanging from a spring with a spring constant of 87 N/m,is set into an up-and-down simple harmonic motion.What is the speed of the mass when moving through a point at 0.05 m displacement? The starting displacement of the mass is 0.1 m from its equilibrium position.

Suppose a 0.9-kg mass on a spring that has been compressed 0.1 m has elastic potential energy of 1.1 J.What is the spring constant? ​

A string is strung horizontally with a fixed tension.A wave of frequency 90 Hz is sent along the string,and it has a wave speed of 55.1 m/s.Then a second wave,one of frequency 180 Hz,is sent along the string.What is the wave speed of the second wave? ​

If the frequency of a traveling wave train is increased by a factor of three in a medium where the speed is constant,which of the following is the result?

A mass of 0.4 kg,attached to a spring with a spring constant of 80 N/m,is set into simple harmonic motion.What is the magnitude of the acceleration of the mass when at its maximum displacement of 0.2 m from the equilibrium position? ​

When an object is moving in simple harmonic motion,which of the following is at a minimum when the displacement from equilibrium is zero?

A mass of 0.39 kg,hanging from a spring with a spring constant of 72 N/m,is set into an up-and-down simple harmonic motion.What is the speed of the mass when moving through the equilibrium point? The starting displacement from equilibrium is 0.14 m. ​

A mass on a spring vibrates in simple harmonic motion at a frequency of 3.9 Hz and an amplitude of 7.8 cm.If a timer is started when its displacement is a maximum (hence x = 7.8 cm when t = 0),what is the displacement of the mass when t = 3.4 s? ​

Which of the following is an example of a longitudinal wave?

Which one of the following quantities is at a maximum when an object in simple harmonic motion is at its maximum displacement?

Equal wavelength waves of amplitude 0.24 m and 0.16 m interfere with one another.What is the resulting minimum amplitude that can result? ​

Which is not an example of approximate simple harmonic motion?

The superposition principle has to do with which of the following?

A pendulum on the Earth has a period T.The acceleration of due to gravity on Mars is less than that on the Earth,and the acceleration due to gravity on the Moon is even less.Where would the period of an identical pendulum be the least?

When car shock absorbers wear out and lose their damping ability,what is the resulting oscillating behavior?

A mass on a spring vibrates in simple harmonic motion at a frequency of 4.2 Hz and an amplitude of 4.2 cm.If a timer is started when its displacement is a maximum (hence x = 4.2 cm when t = 0),what is the acceleration magnitude when t = 4 s? ​

A mass on a spring vibrates in simple harmonic motion at a frequency of 2 Hz and an amplitude of 7 cm.If a timer is started when its displacement is a maximum (hence x = 7 cm when t = 0),what is the speed of the mass when t = 7 s? ​

A simple pendulum has a mass of 0.21 kg and a length of 1.9 m.It is displaced through an angle of 36° and then released.After a time,the maximum angle of swing is only 12°.How much energy has been lost to friction? ​

Introduction

Introduction: Part A

Motion in One Dimension

Motion in One Dimension: Part A

Vectors and Two-Dimensional Motion

Vectors and Two-Dimensional Motion: Part A

The Laws of Motion

The Laws of Motion: Part A

Energy

Energy: Part A

Momentum and Collisions

Momentum and Collisions: Part A

Rotational Motion and the Law of Gravity

Rotational Motion and the Law of Gravity: Part A

Rotational Equilibrium and Rotational Dynamics

Rotational Equilibrium and Rotational Dynamics: Part A

Solids and Fluids

Solids and Fluids: Part A

Thermal Physics

Thermal Physics: Part A

Energy in Thermal Processes Heat and Internal Energy

Energy in Thermal Processes Heat and Internal Energy: Part A

The Laws of Thermodynamics Work in Thermodynamic Processes

The Laws of Thermodynamics Work in Thermodynamic Processes: Part A

Vibrations and Waves: Part A

Sound

Sound: Part A

Electric Forces and Electric Fields

Electric Forces and Electric Fields: Part A

Electrical Energy and Capacitance

Electrical Energy and Capacitance: Part A

Current and Resistance Electric Current

Current and Resistance Electric Current: Part A

Direct-Current Circuits Sources of EMF

Direct-Current Circuits Sources of EMF: Part A

Magnetism Magnets

Magnetism Magnets: Part A

Induced Voltages and Inductance

Induced Voltages and Inductance: Part A

Alternating-Current Circuits and Electromagnetic Waves

Alternating-Current Circuits and Electromagnetic Waves: Part A

Reflection and Refraction of Light

Reflection and Refraction of Light: Part A

Mirrors and Lenses

Mirrors and Lenses: Part A

Wave Optics

Wave Optics: Part A

Optical Instruments

Optical Instruments: Part A

Relativity

Relativity: Part A

Quantum Physics Blackbody Radiation and Plancks Hypothesis

Quantum Physics Blackbody Radiation and Plancks Hypothesis: Part A

Atomic Physics

Atomic Physics: Part A

Nuclear Physics

Nuclear Physics: Part A

Nuclear Energy and Elementary Particles

Nuclear Energy and Elementary Particles: Part A

Particle Collisions, Mediating Photons, and Quark Structures: Exploring the Fundamentals of Physics

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Suppose a 0.9-kg mass on a spring that has been compressed 0.1 m has elastic potential energy of 1.1 J.What is the spring constant?

A string is strung horizontally with a fixed tension.A wave of frequency 90 Hz is sent along the string,and it has a wave speed of 55.1 m/s.Then a second wave,one of frequency 180 Hz,is sent along the string.What is the wave speed of the second wave?

A mass of 0.4 kg,attached to a spring with a spring constant of 80 N/m,is set into simple harmonic motion.What is the magnitude of the acceleration of the mass when at its maximum displacement of 0.2 m from the equilibrium position?

A mass of 0.39 kg,hanging from a spring with a spring constant of 72 N/m,is set into an up-and-down simple harmonic motion.What is the speed of the mass when moving through the equilibrium point? The starting displacement from equilibrium is 0.14 m.

A mass on a spring vibrates in simple harmonic motion at a frequency of 3.9 Hz and an amplitude of 7.8 cm.If a timer is started when its displacement is a maximum (hence x = 7.8 cm when t = 0),what is the displacement of the mass when t = 3.4 s?

Equal wavelength waves of amplitude 0.24 m and 0.16 m interfere with one another.What is the resulting minimum amplitude that can result?

A mass on a spring vibrates in simple harmonic motion at a frequency of 4.2 Hz and an amplitude of 4.2 cm.If a timer is started when its displacement is a maximum (hence x = 4.2 cm when t = 0),what is the acceleration magnitude when t = 4 s?

A mass on a spring vibrates in simple harmonic motion at a frequency of 2 Hz and an amplitude of 7 cm.If a timer is started when its displacement is a maximum (hence x = 7 cm when t = 0),what is the speed of the mass when t = 7 s?

A simple pendulum has a mass of 0.21 kg and a length of 1.9 m.It is displaced through an angle of 36° and then released.After a time,the maximum angle of swing is only 12°.How much energy has been lost to friction?