Question 13.5 ptsThe transverse wave move in a direction ______.Group of answer choicesthat changes with speedalong the direction of wave travelthat is at right angle to the direction of wave travel Flag question: Question 2Question 23.5 ptsIf a singer is able to shatter a crystal chandelier with her voice, thisillustrates an example of ______.Group of answer choicesan echointerferenceresonancesound refractionbeats Flag question: Question 3Question 33.5 ptsIf a child swinging to and fro on a swing stands up, her time for ato-and-fro swing is _______.Group of answer choiceslongerunchangedshorter Flag question: Question 4Question 43.5 ptsA water wave passes by a floating wine cork that oscillates up and down twocycles each second. The wave frequency is ______.Group of answer choices6 Hz0.5 Hz2 Hz3 Hz1 Hz Flag question: Question 5Question 53.5 ptsA wave makes 90 vibrations per second. It travels a distance of 40 metersin one second. Its frequency is then _______.Group of answer choices5400 hertz and it travels at 2 m/s90 hertz and it travels at 40 m/s40 hertz and it travels at 90 m/snone of the above Flag question: Question 6Question 63.5 ptsAn object that completes 30 vibrations in 5 seconds has a frequency of______.Group of answer choices150 hertz1 hertz0.17 hertz6 hertz Flag question: Question 7Question 73.5 ptsSound waves in air travel at higher speeds if the temperature of the air is_______.Group of answer choicescoldwarmaverageany of the above Flag question: Question 8Question 83.5 ptsAt high amplitudes, the pendulum clock runs _______.Group of answer choicesslownormally as it does at sea levelfast Flag question: Question 9Question 93.5 ptsWhen designing a music hall, the engineer is concerned with ______.Group of answer choicesreverberationsechoesreflectionall of the abovenone of the above Flag question: Question10Question 103.5 ptsThe human hearing range is about _______.Group of answer choices40 hertz to 40,000 hertz10 hertz to 10,000 hertz20 hertz to 20,000 hertznone of the above Flag question: Question11Question 113.5 ptsForced vibration can produce resonance that requires the ________.Group of answer choicesmatching of constructive and destructive interferencematching of wave amplitudesmaximum amount of energy inputminimum beat frequencyleast amount of energy input Flag question: Question12Question 123.5 ptsA less intense sonic boom at ground level can occur if the aircraft________.Group of answer choicesis smalleris more streamlinedflies higherall of the abovenone of the above Flag question: Question13Question 133.5 ptsOne of the reasons for the higher pitch of your voice after you've inhaledsome helium is that sound travels ______.Group of answer choicesthe same speed in helium but with a longer wavelengthfaster in helium than in airslower in helium than in air Flag question: Question14Question 143.5 ptsA sound wave with a speed of 340 m/s and frequency of 340 Hz. Thewavelength is ______.Group of answer choices100 m1000 m1 m10 mnone of the above Flag question: Question15Question 153.5 ptsHuman hearing is most efficient in hearing _______.Group of answer choicesinfrasonic soundultrasonic soundboth of theseneither of these Flag question: Question16Question 163.5 ptsIn standing waves, a node is a position of _______.Group of answer choicesmaximum amplitudehalf amplitudeminimum amplitude Flag question: Question17Question 173.5 ptsA 1050-hertz tuning fork is sounded at the same time a piano note isstruck. You hear three beats per second. What is the frequency of the pianostring?Group of answer choices1047 hertz3168 hertz1046 hertz1053 hertzneed more information Flag question: Question18Question 183.5 ptsIf the amplitude of a wave is 1 meter, then the crest-to-trough distance ofthe wave must be ______.Group of answer choices1 m0.5 m2 mnone of the above Flag question: Question19Question 193.5 ptsThe origin of a sonic boom ________.Group of answer choicesmust be a sound emitteris not a sound emittermay or may not be a sound emitternone of the above Flag question: Question20Question 203.5 ptsWhen the energy of a wave dissipates into heat, this reduces the wave's_______.Group of answer choiceswavelengthperiodfrequencyspeedamplitude Flag question: SpacerPlease show your full solution steps. First state what is given, then startwith the symbolic equation, then show data entered into the equation, and thenthe final answer with proper units. Please write your steps vertically. Youwill not gain credit for showing only the answer. Flag question: Question21Question 2110 ptsA piano string vibrates at an unknown frequency. In order to determine thefrequency, a tuning fork of frequency of 440 Hz is sounded at the same time thepiano key is struck. A beat frequency of 4 beats per second is heard. What arethe possible frequencies at which the string could be vibrating? Flag question: Question22Question 2210 ptsA bat flying toward a wall emits a sound. It receives its echo 0.2 seclater. How far is the wall from the bat? the bat. Flag question: Question23Question 2310 ptsOn a piano, you strike a key whose frequency is 256Hz.a) What isthe period of this tone?b) If the speed of the tone in air is 340 m/s, what is its wavelength?
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