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The following physics responses are provided by a student and, as such, should be considered in that context. While every effort is made for accuracy, absolute correctness cannot be fully guaranteed.
| C | I | Question | Answer |
|---|---|---|---|
| 13 | The position of a 0.64-kg mass undergoing simple harmonic motion is given by x = (0.160 m) cos (πt/16). What is its position at t = 5.0 s? | 0.089 m | |
| 13 | The position of a 0.64-kg mass undergoing simple harmonic motion is given by x = (0.160 m) cos (πt/16). What is the maximum net force on the mass as it oscillates? | 3.9*10^-3 N | |
| 13 | The SI base units for spring constant are which of the following? 1) kg·s2 2) kg/m2 3) kg/s2 4) kg·m2 5) kg·m | kg/s2 | |
| 13 | The superposition principle has to do with which of the following? 1) effects of waves at great distances 2) the ability of some waves to move very far 3) how displacements of interacting waves add together 4) relativistic wave behavior 5) both choices A and C are valid. | how displacements of interacting waves add together | |
| 13 | The wavelength of a traveling wave can be calculated if one knows the: 1) frequency. 2) speed and amplitude. 3) amplitude and frequency. 4) frequency and speed. 5) speed. | frequency and speed. | |
| 13 | Three identical springs each have the same spring constant k. If these three springs are attached end to end forming a spring three times the length of one of the original springs, what will be the spring constant of the combination? 1) k 2) 3 k 3) k/3 4) 1.73 k 5) 9 k | k/3 | |
| 13 | Transverse waves travel with a speed of 200 m/s along a taut copper wire that has a diameter of 1.50 mm. What is the tension in the wire? (The density of copper is 8.93 g/cm3.) | 631 N | |
| 13 | Tripling both the tension in a guitar string and its mass per unit length will result in changing the wave speed in the string by what factor? | 1.00 (i.e., no change) | |
| 13 | Tripling the displacement from equilibrium of an object in simple harmonic motion will bring about a change in the magnitude of the object's acceleration by what factor? | 3.0 | |
| 13 | Tripling the mass of the bob on a simple pendulum will cause a change in the frequency of the pendulum swing by what factor? | 1.0 | |
| 13 | Tripling the mass per unit length of a guitar string will result in changing the wave speed in the string by what factor? | 0.58 | |
| 13 | Tripling the weight suspended vertically from a coil spring will result in a change in the displacement of the spring's lower end by what factor? | 3.0 | |
| 13 | Two water waves meet at the same point, one having a displacement above equilibrium of 60 cm and the other having a displacement above equilibrium of 80 cm. At this moment, what is the resulting displacement above equilibrium? | 140 cm | |
| 13 | Waves propagate at 8.0 m/s along a stretched string. The end of the string is vibrated up and down once every 1.5 s. What is the wavelength of the waves that travel along the string? | 12m | |
| 13 | What is the phase difference when two waves, traveling in the same medium, undergo constructive interference? | 0° |
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