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P150_ExamF_F07

# P150_ExamF_F07 - Physics 151 Final Exam Name Lab Section...

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Physics 151 Name______________________________ December 14, 2007 Final Exam Lab Section Number_______________ Instructions: There are 40 multiple choice questions (worth 2 points each), and 6 work problems (worth a total of 120 points). You must answer all questions to receive full credit. You must show all equations and substitutions made to obtain your answers for the work problems. Write the final answers to the problems with their respective units in the spaces provided. Part I (80) Part II (120) Total (200)

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Part I: Short Answers Multiple Choice: Please write in the letter of the item that best answers the question. Also enter your answers in the clicker system. 1.______ The speed of a sound wave is determined by (A) its amplitude. (B) its intensity. (C) its pitch. (D) the number of harmonics present. (E) the transmitting medium. 2.______ During a time interval of exactly one period of vibration of a tuning fork, the emitted sound travels a distance (A) equal to the length of the tuning fork. (B) equal to twice the length of the tuning fork. (C) equal to one wavelength. (D) of 343 meters. (E) which decreases with time. 3.______ The displacement wave and the pressure wave in a sound wave are (A) in phase. (B) 45 o out of phase. (C) 90 o out of phase. (D) 180 o out of phase. (E) 360 o out of phase. 4.______ An organ pipe, open at both ends, has harmonics at 500 Hz and 600 Hz with no other harmonics in between these two frequencies. The fundamental frequency of this organ pipe is (A) 50 Hz. (B) 100 Hz. (C) 150 Hz. (D) 200 Hz. (E) 250 Hz. 5.______ Which of the following is a scalar quantity? (A) Velocity. (B) Distance. (C) Displacement. (D) Acceleration. (E) None of these. 6.______ Two bodies are free falling with negligible air resistance, side by side, above a horizontal plane. If one of the bodies is given a horizontal acceleration during its descent, it (A) strikes the plane at the same time as the other body. (B) strikes the plane earlier than the other body. (C) has the vertical component of its velocity altered. (D) has the vertical component of its acceleration altered. (E) follows a straight line path along the resultant acceleration vector.
7.______ A newton is the force (A) of gravity on a 1 kg body. (B) of gravity on a 1 g body. (C) that gives a l g body an acceleration of 1 cm/s 2 . (D) that gives a 1 kg body an acceleration of 1 m/s 2 . (E) that gives a 1 kg body an acceleration of 9.8 m/s 2 . 8.______ The standard 1-kg mass is attached to a compressed spring and the spring is released. If the mass initially has an acceleration of 5.6 m/s 2 , the force of the spring has a magnitude of (A) 2.8 N. (B) 5.6 N. (C) 11.2 N. (D) 0. (E) An undetermined amount. 9.______

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P150_ExamF_F07 - Physics 151 Final Exam Name Lab Section...

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