Chapter 12 Practice Physics Test Holt Physics 1. When a mass attached to a spring vibrates back and forth, at the equilibrium position, thea) acceleration reaches a maximumb) velocity reaches a maximumc) net force reaches a maximumd) velocity reaches zero 2. The angle between a pendulum’s equilibrium position and its maximum displacement is the pendulum’sa) periodb) frequencyc) vibrationd) amplitude 3. Which of the following is the time it takes to complete a cycle of motion?a) amplitudeb) periodc) frequencyd) wavelength 4. How are frequency and period related in simple harmonic motion?a) They are directly relatedb) They are inversely relatedc) they both measure the time per cycled) they both measure the number of cycles per unit of time 5. By what factor should the length of a simple pendulum be changed if the period of vibration were to be tripled?a) 3b) 6c) 9d) 27 6. What is the period of a 4.12 m long pendulum?a) 2.01sb) 3.11sc) 4.07sd) 9.69s 7. Which of the following is a single nonperiodic disturbancea) pulse waveb) periodic wavec) sin waved) transverse wave 8. If the waveform is drawn from a longitudinal wave pattern, the compressed regions correspond toa) the wavelengthb) the crestc) the troughd) the mass 9. A periodic wave has a wavelength of 0.50 m and a speed of 20 m/s. What is the wave frequency?a) 0.02 hzb) 20 hzc) 40 hzd) 10 hz 

10. Bats can detect small objects, such as insects, that are approximately the size of one wavelength. If bats emit a chirp at a frequency of 60.0 kHz and the speed of sound waves in air is 330 m/s, what is the size of the smallest insect they can detect?a) 1.5mmb) 3.5mmc) 5.5mmd) 7.5mm 11. Two waves can occupy the same space at the same time because wavesa) are matterb) are displacements of matterc) do not cause interference patternsd) cannot pass through one another 12. Which of the following is the interference that results when individual displacements on the same side of the equilibrium position are added together to form the resultant wave?a) constructiveb) destructivec) complete constructived) complete destructive 13. At a fixed boundary, waves are a) never reflected nor invertedb) reflected but not invertedc) reflected and invertedd) inverted but not reflected 14. Standing waves are produced by periodic waves ofa) any amplitude and wavelength traveling in the same directionb) the same amplitude and wavelength traveling in the same directionc) any amplitude and wavelength traveling in opposite directionsd) the same frequency, amplitude, and wavelength traveling in opposite directions 15. A 2.0 m long stretched rope is fixed at both ends. Which wavelength would NOT produce standing waves on this rope?a) 2.0 mb) 3.0 mc) 4.0 md) 1.0 m 16. Which of the following wavelengths would NOT produce standing waves on a rope whose length is 1 m?a) 2/3 mb) 1 mc) 2md) 3/4 m 17. A 3.0 m long stretched string is fixed at both ends. If standing waves with a wavelength of two-thirds L are produced on this string, how many nodes will be formed?a) 0b) 2c) 3d) 4  18. The velocity of propagation of a transverse wave on a 2.0 meter long string fixed at both ends is 200 m/s. Which one of the following is not a natural (resonant) frequency of this string?

a) 25 Hzb) 50 Hzc) 100 Hzd) 200 Hz 19. Simple pendulum A swings back and forth at twice the frequency of simple pendulum B. Which statement is correct?a) Pendulum B is twice as long as Ab) Pendulum B is twice as massive as Ac) The length of B is four times the length of Ad) The mass of B is four times the mass of A 20. When the length of a simple pendulum is tripled, the time for one complete vibration increases by a factor ofa) 3b) 2c) 1.7d) 1.4----------Key----------not done yet1. (b) 2. (d) 3. (b) 4. (b) 5. (c) 6. (c) 7. (a) 8. (b) 9. (c) 10. (c) 11. (b) 12. (a) 13. (c) 14. (d) 15. (b) 16. (d) 17. (d) 18. (a) 19. (c) 20. (c)