Wave Characteristics: How much time does it take a beam of light to travel 2.9 km through space? (c = 3.0 × 108 m/s)
A. 9.7 s
B. 9.7 ms
C. 9.7 ?s
D. 9.7 ns
E. 9.7 ps
Answer: C
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Snell's Law: A plastic cube is immersed in water having an index of refraction of 1.33. A laser beam in the plastic strikes the interface at an angle of 14.5° with the normal in the plastic. In the water, this beam makes an angle of 21.8° with the normal. What is the speed of light in the plastic cube? (c = 3.0 × 108 m/s)
Fill in the blank(s) with the appropriate word(s).
What is the purpose of the lab, the importance of the topic, and the question you are trying to answer?
What will be an ideal response?
Why can studies of carbon isotopes be used to detect the presence of past biological activity in rocks?
A) living organisms absorb only the most common carbon isotope B) living organisms remove all carbon from rocks C) living organisms absorb certain carbon isotopes more easily than others D) carbon isotopes are found only in living organisms
A sound source of frequency 1 100 Hz moves at 40.0 m/s toward a listener who is at rest. What is the apparent frequency heard by the listener? (speed of sound = 340 m/s)
a. 1 230 Hz b. 970 Hz c. 980 Hz d. 1 250 Hz e. 870 Hz