Physics 1010 chapters 19-30 Exam with verified detailed answers

Physics 1010 chapters 19-30 Exam with verified ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




detailed answers ||\\|//||




If there is no material medium to vibrate, then no _____________ is possible. - correct
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answer✔✔sound



__________ cannot travel in a vacuum, but _________ can. - correct answer✔✔sound, ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




light



What is the unit of frequency? - correct answer✔✔Hertz
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The ___________ of a vibration or wave is the time for one complete vibration - correct
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answer✔✔Period



What is the equation for wave speed? - correct answer✔✔wave speed= wavelength x
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frequency



When the crest of one wave overlaps the crest of another, their individual effects add
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together to produce a wave of increased amplitude. This is called what? - correct
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answer✔✔Constructive Interference ||\\|//||




When the crest of one wave overlaps the trough of another, their individual effects are
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reduced. The high part of one wave simply fills in the low part of another. This is called
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what? - correct answer✔✔destructive interference
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regions of minimal or zero displacement, with minimal or zero energy - correct
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answer✔✔nodes

, regions of maximum displacement and maximum energy - correct answer✔✔antinodes
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Waves where the oscillations are perpendicular to the direction that the wave propagates. -
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correct answer✔✔Transverse waves ||\\|//|| ||\\|//||




Waves where the oscillations are parallel to the direction that the wave moves - correct
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answer✔✔Longitudinal waves ||\\|//||




Maximum displacement from equilibrium - correct answer✔✔amplitude ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




What is the SI unit for Amplitude? - correct answer✔✔meters
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SI unit for period? - correct answer✔✔seconds
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number of cycles per second - correct answer✔✔Frequency ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




What is the speed of sound in the air? - correct answer✔✔330-345 m/s
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True or false: Speed of sound in the air is faster as the temperature increases - correct
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answer✔✔True



True or false: sound travels slower the denser a material is - correct answer✔✔False
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(faster)



The greater the amplitude of a compression wave in air, the ___________ the sound we
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hear - correct answer✔✔louder
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