Mechanical Waves and Wave Properties Quiz
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Questions and Answers

What is the time for a wave to complete one cycle called?

Period

In which type of wave does the wave travel perpendicular to the direction of the waves?

Transverse Wave

What is the term for the number of complete wave cycles per second?

Frequency

What happens to the reflected pulse at a high boundary (less to more dense)?

<p>Reflected pulse will have more speed and wavelength than transmitted</p> Signup and view all the answers

What happens to the reflected pulse at a soft boundary (more to less dense)?

<p>Reflected pulse will have less speed and wavelength than transmitted</p> Signup and view all the answers

What is the term for the perceived frequency of a sound source being lower or higher than the emitted frequency due to relative velocities of the emitter and detector?

<p>Doppler effect</p> Signup and view all the answers

What happens when an object travels at the speed of sound?

<p>High pressure compressions build up in front of it, referred to as a sound barrier, and a shock wave trails behind, resulting in a sonic boom when heard by a listener.</p> Signup and view all the answers

What is the emission of light from 'hot' matter called?

<p>Incandescence</p> Signup and view all the answers

What is the emission of light when excited electrons fall to lower energy levels called?

<p>Luminescence</p> Signup and view all the answers

What is amplitude related to in the context of light?

<p>Intensity</p> Signup and view all the answers

What is color related to in the context of light?

<p>Frequency</p> Signup and view all the answers

What is the fixed speed of light in a vacuum?

<p>299,792,458</p> Signup and view all the answers

How does the speed of light change when it travels from a vacuum to a medium?

<p>Light always travels slower in a medium than it does in a vacuum.</p> Signup and view all the answers

What is the critical angle related to in the context of light?

<p>It applies to a light beam going from a medium with a high index of refraction to a medium with a low index of refraction.</p> Signup and view all the answers

What is the difference between a vector and a scalar?

<p>A vector has both magnitude and direction, while a scalar has only magnitude.</p> Signup and view all the answers

What is the only force acting on an object in free fall problems?

<p>Gravity</p> Signup and view all the answers

Sound travels as a ______ wave

<p>longitudinal</p> Signup and view all the answers

The speed of sound increases as the air temperature ______

<p>increases</p> Signup and view all the answers

The perceived frequency of a sound source can be lower or higher than the emitted frequency due to the ______ effect

<p>Doppler</p> Signup and view all the answers

In fixed end reflection, there are no changes in frequency, speed, or ______

<p>wavelength</p> Signup and view all the answers

Free end reflection results in no change in frequency, speed, or ______

<p>wavelength</p> Signup and view all the answers

In a transverse wave, the wave travels perpendicular to the direction of the ______

<p>waves</p> Signup and view all the answers

When something travels at the speed of sound, all of the High pressure compressions build up in front of it, this is referred to as a Sound Barrier. ______ the sound barrier is very difficult, when the speed of sound is exceeded, it is called Super Sonic speeds. When Speed of sound is exceeded, the object is passing the sound its creating -A shock wave trails behind the object, when a listener hears the shockwave, they experience a sonic boom.

<p>Breaking</p> Signup and view all the answers

Unit 3-Light -Incandescence Emission of light from 'hot' matter (1800k) -Luminescence: Emission of light when excited electrons fall lower energy levels. -Amplitude related to intensity -Color related to fredericy -The speed of light in a Vacuum is fixed at 299,792,45 → Light always travels slower in a medium than it does in a vacuum -When light travels from I medium to another the speed changes Absolute index of refraction measures how much lig beads when it leaves a Vacuum and enters a new medium Relative index of refraction measures how much light will refract when passing from one medium to another. Lower Index of refraction = Faster Medium Fast to slow medium (Low to high Index of refraction) → light bends towards the normal line. ex: Light passing from Air to water Slow to Fast medlum (High to low index of refraction) light bends away from the normal line. exilight parsing from water to air Critical Angle →Only apply to to a light beam going from a medium with a high index of refraction to a med with a low index of refraction The critical angle is when the refracted beam of light parallel (90°), with the interface between the 2 mee →→If the angle. of incidence (i) exceeds the critical angle, nothing is refra but is all reflected into the Original medium. Vector: Magnitude & Direction Scaler: Magnitude only. Vector Addition & Subtraction For subtraction, make sure to draw the inverse of the vector that is being subtracted. * Tip to Tip method. Addition use Tip to Tail method - Fall Problems involve objects which are dropped or own straight up in the air The only thing arting on the object is gravity. When a object is dropped: 1) Starts from rest (Vi=0) 2) it will accelerate uniformly ignoring air resistance) towards center of the earth at 9.80m2 3) Final velocity is a maximum right before it strikes the ground. 4) An object thrown upwards will have equal velocities at equal heights -For multipart problems the parts can be 1) + Acceleration 2)-Acceleration 3) Uniform motion.

<p>Velocity</p> Signup and view all the answers

The critical angle is when the ______ beam of light is parallel (90°), with the interface between the 2 media. If the angle of incidence (i) exceeds the critical angle, nothing is ______ but is all reflected into the Original medium.

<p>refracted</p> Signup and view all the answers

The speed of ______ in a Vacuum is fixed at 299,792,45 → Light always travels slower in a medium than it does in a vacuum -When ______ travels from I medium to another the speed changes Absolute index of refraction measures how much lig beads when it leaves a Vacuum and enters a new medium Relative index of refraction measures how much ______ will refract when passing from one medium to another. Lower Index of refraction = Faster Medium Fast to slow medium (Low to high Index of refraction) → ______ bends towards the normal line.

<p>light</p> Signup and view all the answers

Vector: Magnitude & Direction Scaler: Magnitude only. Vector Addition & Subtraction For subtraction, make sure to draw the inverse of the vector that is being subtracted. * Tip to Tip method. Addition use Tip to Tail method - Fall Problems involve objects which are dropped or own straight ______ in the air The only thing arting on the object is gravity. When a object is dropped: 1) Starts from rest (Vi=0) 2) it will accelerate uniformly ignoring air resistance) towards center of the earth at 9.80m2 3) Final velocity is a maximum right before it strikes the ground. 4) An object thrown ______wards will have equal velocities at equal heights -For multipart problems the parts can be 1) + Acceleration 2)-Acceleration 3) Uniform motion.

<p>up</p> Signup and view all the answers

Lower Index of refraction = Faster Medium Fast to slow ______ (Low to high Index of refraction) → light bends towards the normal line. ex: Light passing from Air to water

<p>medium</p> Signup and view all the answers

Slow to Fast medium (High to low index of refraction) ______ bends away from the normal line. exi______ parsing from water to air

<p>light</p> Signup and view all the answers

Critical Angle →Only apply to a light beam going from a medium with a high index of refraction to a med with a low index of refraction The critical angle is when the refracted beam of light is parallel (90°), with the ______ between the 2 media.

<p>interface</p> Signup and view all the answers

If the angle of incidence (i) exceeds the critical angle, nothing is refracted but is all ______ into the Original medium.

<p>reflected</p> Signup and view all the answers

Fall Problems involve objects which are dropped or own straight up in the air The only thing arting on the object is gravity. When a object is dropped: 1) Starts from rest (Vi=0) 2) it will accelerate uniformly ignoring air resistance) towards center of the earth at 9.80m2 3) Final velocity is a maximum right before it strikes the ground. 4) An object thrown upwards will have equal velocities at equal heights -For multipart problems the parts can be 1) + Acceleration 2)-Acceleration 3) Uniform motion.

<p>acting</p> Signup and view all the answers

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