Page 1 of 5CTWaves-1 Is "The Wave" at the stadium a transverse wave or a longitudinal wave? A) Transverse B) Longitudinal C) neitherAnswer: TransverseCTWaves-2A wave on a stretched drum head is an example of a A) Transverse wave B) Longitudinal wave C) it's not a wave at allAnswer: TransverseCTWaves-3The graph below shows a snapshot of a wave on a string which is traveling to the right. There is a bit of paint on the string at point P.At the instant shown, the velocity of paint point P has which direction?Answer: downwardE) None of theseAt the instant shown, the acceleration of the particle has which direction? (Same choices)Answer: downwardPhys1120 Concept Tests, M.Dubson ©University of Colorado at BoulderABDCy x P vwavePage 2 of 5CTWaves-4 Three waves are traveling along identical strings (same mass per length, same tension, same everything). Wave B has twice the amplitude of the other two. Wave C has 1/2 the wavelength than A or B.Which Wave goes slowest? A B C D) All have same vAnswer: All have same v. In general, the speed of a wave depends on the properties of the medium.Which wave has the highest frequency? A B C D) All 3 have the same frequencyAnswer: CPhys1120 Concept Tests, M.Dubson ©University of Colorado at Bouldery x vwave y x y x A C BPage 3 of 5CTWaves-5 Consider the equation x – v t = , where v and are constants. The variable x is position and t is the time. A point x that obeys this equation is a point that A) increases (moves to the right) with speed vB) decreases (moves to the left) with speed vC) is constant x (not moving)D) increases (moves to the right) with speed E) decreases (moves to the left) with speed Answer: increases (moves to the right) with speed vCTWaves-6 Two traveling waves 1 and 2 are described by the equations.y x t x ty x t x t122 24 2( , ) sin( )( , ) sin( ) All the numbers are in the appropriate SI (mks) units.Which wave has the higher speed? A) 1 B) 2 C) Both have the same speed.The wavelength of wave 1 is most nearlyA) 1m B) 2m C) 3m D) 4mThe period of wave 2 is most nearlyA) 1s B) 2 s C) 3 s D) 4 sAnswers: Wave 2 has the higher speed. The wavelength of wave 1 is about 3 m ( m, to be exact). The period of wave 2 is about 3 s .Phys1120 Concept Tests, M.Dubson ©University of Colorado at BoulderPage 4 of 5CTWaves-7 Two impulse waves are approaching each other, as shown. Which picture correctly shows the total wave when the two waves are passing through each other?Answer: DPhys1120 Concept Tests, M.Dubson ©University of Colorado at BoulderA)B)C)D)Page 5 of 5CTWaves-8 When you turn up the volume on your sound system, .. A) the speaker cone oscillates back and forth more rapidly, completing more cycles per second B) the speaker cone oscillates back and forth more slowly, completing fewer cycles per second C) the speaker cones oscillates back and forth a farther distance in each cycleD) the speaker cones oscillates back and forth a shorter distance in each cycleE) None of theseAnswer: C CTWaves-9 Three pressure waves in air (sound waves) , all with the mathematical formx ty(x, t) A sin 2T� �� �= p -� �� �l� �� �, are labeled A, B, and C. Which sound is the loudest and which is the highest pitch?Answer: B is loudest (highest amplitude) and C is highest pitch (highest frequency, shortest wavelength). Phys1120 Concept Tests, M.Dubson ©University of Colorado at
View Full Document
Unlocking...