CD 411-Top Hat Midterm Questions
CD 411-Top Hat Midterm Questions CD 411
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This 6 page Study Guide was uploaded by Kara Mockaitis on Tuesday March 10, 2015. The Study Guide belongs to CD 411 at University of Alabama - Tuscaloosa taught by Dr. Buhr in Spring2015. Since its upload, it has received 55 views.
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Date Created: 03/10/15
Top Hat QuestionsMidterm 1 The density of air becomes greater the higher you go from sea level a True b False 2 Which of the following refers to mass per unit volume a Elasticity c Density b Pressure d Weight 3 For vibration to occur a source MUST have both mass and what 4 5 Weight is aforce a True b False 6 A Newton meter squared is a measure of what 7 8 Which of the following is derived from velocity a Displacement b Acceleration c Time 9 How many fundamental physical quantities are there a One c Three b Two d Four 10Which of Newton39s Laws is associated with the concept of inertia a 1st b 2nd c 3rd 110n a pendulum when force is maximal displacement from equilibrium is what a Zero b Maximal c Equal to force 12What is the capacity to do work 13 14Which of the following describes momentum M a Mass x acceleration b Mass x velocity c Mass x acceleration x distance d Mass x acceleration area 15What is the unit for pressure a Hertz c Newton b Pascal d Joule 16The speed of sound through a medium is greater for sound sources that have greater elasticity a True b False 17The speed of sound increases as the temperature of the medium increases all else being equal a True b False 18 If the vocal folds vibrate at a frequency of 200 Hz what is the period T a 1 second c 001 seconds b 01 seconds d 005 seconds 19The restoring force is what at maximal displacement of a pendulum a Maximum c Equal to inertia b Minimum d Equal to kinetic energy 20The root mean square of a sound pressure wave with peak amplitude of 2 is what 21 22The mean of the instantaneous amplitudes of a sound pressure wave with peak amplitude of 2 is what 23 24Which of the following is in phase with particle velocity a Particle displacement b Particle acceleration c Instantaneous pressure 25 For a given angle eg 45 degrees sin 6 is a constant regardless of the lengths of x and r a True b False 26 quotThe magnitude of the restoring force is proportional to distance displacedquot is known as what law a Newton39s 1st Law c Newton39s 3rd Law b Newton39s 2nd Law d Hooke39s Law 27A radian is equal to how many degrees a 180 c 573 b 360 d 628 28The natural frequency of vibration of a guitar string is inversely proportional to the square root of the crosssectional mass a True b False 29The natural frequency of vibration of a springmass system is inversely proportional to the square root of stiffness a True b False 30The frequency of a sound wave depends on properties of the sound source a True b False 31 The rms sound pressure of a wave with peak amplitude 1 Pa is what 32 33 Damping varies sinusoidally over time and is in phase with which of the following a Displacement b Velocity c Acceleration 34The wavelength of a 10 Hz sound will be greater in air than in water a True b False 35Which of the following does NOT influence the frequency of vibration of a guitar string a Crosssectional mass c Stiffness of guitar pick b Tension d Length 36 For any peak amplitude of a sound pressure wave rms amplitude is always greater than fullwave rectified amplitude a True b False 37 How many radians are in a circle 38 39A gold medal has twice the value of a silver medal a True b False 40An exponential scale can also be referred as what other scale a Ordinal c Ratio b Nominal d lnterval 41 Any number raised to the 0 power is what 42 43What is the value of 4 raised to the 3 power 44 45What is the logarithm base 10 of 1000000 46 47Solve the following log 10quot1 10quot2 a 0 c 1 b 1 d 10 48Solve the following 10quot1 10quot2 a 0 c 1 b 1 d 10 49What law of exponents is this a Law 1 b Law 2 c Law3 5010quot12x10quot6 51 52What is the Law of Logarithms that this is relevant to a Law 1 c Law 3 b Law2 d Law4 5310A1010A12 54 55What is energy expenditure per second per unit squared Power is expressed in terms of what pressure ratio of 801 is equal to how many dB 3An intensity ratio of 801 is equal to how many dB For every doubling of intensity dB increased by what a 2 c 6 b 3 d 10 64What dB level corresponds to a ratio of 1 a O c 316 1 d 10 FXESFr y P39PPPBTF39T39T39P39CP hfbp39 2 aa ab ac adAnswers ae 1 b False 2 c Density 3 Elasticity 4 a True 5 Pressure 6 b Acceleration 7 c Three 8 a 1st 9 a Zero 10Energy 11b Mass x velocity 12b Pascal 13b False 14a True 15d 005 seconds 16a Maximum 171414 180 19 c Instantaneous pressure 20a True 21 d Hooke39s Law 22c 573 23a True 24b False 25a True 260707 27 b Velocity 28b False 29c Stiffness of guitar pick 30a True 31628 32b False 33c Ratio 341 350015625 366 37b 1 38d 1O 39a Law 1 400000001 41 b Law 2 42100 43 lntensity 44Watts 4538 4619 47b 3 48a 0 49
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