1. | If you push an object a given distance, while applying twice the force, you do |
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2. | A job is done slowly, while an identical job is done quickly. Both jobs require the same amount of work, but different amounts of |
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3. | A bow is drawn so that it has 40 J of potential energy. When fired, the arrow will ideally have a kinetic energy that is |
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4. | The ball rolling down an incline has its maximum potential energy at |
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5. | Which has greater kinetic energy, a car traveling at 30 km/hr or a car of half the mass traveling at 60 km/hr? |
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6. | If a power plant is 90% efficient, and the transmission system that delivers power to consumers is 90 % efficient, then the overall efficiency is |
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7. | A TV set is pushed a distance of 2 m with a force of 20 N. How much work is done on the set? |
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8. | A car moves 4 times as fast as another identical car. Compared to the slower car, the faster car has |
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9. | When a car is braked to a stop, its kinetic energy is transformed to |
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10. | Do 100 J of work in 50 s and your power output is |
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11. | An object lifted 10 meters gains 200 J of potential energy. If the same object is lifted 20 meters, its potential energy gain is |
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12. | An object that has kinetic energy must be |
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13. | A ball player wishes to determine pitching speed by throwing a ball horizontally from an elevation of 5 m above the ground. The player sees the ball land 25 m down range. What is the player's pitching speed? |
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14. | A river 100 m wide flows due south. A boat that goes 1 m/s relative tot he water is pointed due east as it crosses from the west bank. The boat crosses in |
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15. | Which of the following is electrically neutral? |
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16. | The volume of matter comes mostly from its |
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17. | If a gram of antimatter meets a kilogram (1000g) of matter, the amount of mass to survive is |
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18. | What makes an element distinct? |
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19. | In an electrically neutral atom, the number of protons in the nucleus is balanced by an equal number of |
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20. | The smallest particle of those listed below is |
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21. | Solid matter is mostly empty space. The reason solids don't fall through one another is because |
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22. | If one neutron is added to a helium nucleus, the result is |
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23. | Like a transverse wave, a longitudinal wave has |
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24. | The vibrations of a transverse wave move in a direction |
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25. | Radio waves travel at the speed of light, 300,000,000 m/s. The wavelength of a radio wave received at 100 megahertz is |
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26. | If the frequency of a certain wave is 10 hertz, its period is |
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27. | A wave travels an average distance of 6 meters in one second. What is the wave's velocity? |
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28. | A child wings to and fro on a playground swing. If the child stands rather than sits, the time for a to-and-fro swing is |
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29. | If at concert you run toward the orchestra, the frequency of the sound you hear will be |
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30. | The approximate range of human hearing is |
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31. | We are best at hearing |
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32. | A sound wave is a |
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33. | The speed of a sound wave in air depends on |
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34. | The object with the highest natural frequency is a |
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35. | Caruso is said to have made a crystal chandelier shatter with his voice. This is a demonstration of |
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36. | Sound waves can interfere with one another so that no sound results |
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37. | The phenomenon of beats results from sound |
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38. | Resonance can be looked at as forced vibration with the |
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39. | An explosion occurs 34 km away. Since sound travels at 340 m/s, the time it takes fr the sound to reach you is |
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40. | The beat frequency produced when a 240 hertz tuning fork and a 246 hertz tuning fork are sounded together is |
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41. | A general rule for estimating the distance in kilometers between an observer and a lightning bolt is to count the number of seconds between seeing the lightning and hearing it, and dividing by |
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42. | A piano tuner knows that a key on the piano is tuned to the frequency of his tuning fork when he strikes them at the same time and the number of beats he hears each second is |
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43. | The period of the second hand on a clock is |
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44. | The amplitude of a particular wave is 1 meter. The top-to-bottom distance of the disturbance is |
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45. | You dip your finger repeatedly into water and make waves. If you dip your finger more frequently, the wavelength of the waves |
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46. | An object that completes 10 vibrations in 20 seconds has a frequency of |
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47. | Wave interference occurs for |
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48. | The Doppler effect is characteristic of |
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49. | A bow wave is produced when a wave source moves |
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50. | The pendulum with the greatest frequency is the pendulum with the |
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