Unit3 Test
The next five questions refer to these electric meters: |
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15. | How much electricity was used during the month of June? | ||||||||||
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How much would this energy cost the consumer? (assume the average rate of $0.07 per kwh) | ||||||||||
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18. | What was the meter reading on June 1? | ||||||||||
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19. | What was the meter reading on July 1? | ||||||||||
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20. | A piece of iron can be made into a permanent magnet by stroking it with a strong magnet. | ||||
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10. | If the frequency of a wave is 5 Hz, how many waves will pass by a stationary object in 1 minute? | ||||||||||
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11. | A submarine captain wishes to know how far away an undersea cliff face is, so he sends out a SONAR signal. After 0.80 seconds, he receives the echo. How far away is the cliff face? | ||||||||||
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Use this figure to answer the next 3 questions: ![]() |
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12. | On the diagram, which letter represents the amplitude? | ||||||||||
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13. | Which of the letters represents the wavelength? | ||||||||||
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14. | Which position represents the trough? | ||||||||||
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1. | If a star is moving away from Earth at a high speed, which of the following would astronomers observe? | ||||||||||||||||||||
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10. | Which of the following has the most energy? | ||||||||||
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11. | Which of the following best describes the dual nature of light? | ||||||||
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13. | What advantage does knowing about the atomic spectrum give astronomers? | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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