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Parallel Exercises A
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Note:  You will need to refer to Table 7.2 below to complete some of the following exercises.

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  1. What is the speed of light while traveling through (a) water and (b) ice?
    Click here to see the answer (20.0K)

  2. How many minutes are required for sunlight to reach the earth if the sun is 1.50 × 108 km from the earth?
    Click here to see the answer (12.0K)

  3. How many hours are required before a radio signal from a space probe near the planet Pluto reaches Earth, 6.00 × 109 km away?
    Click here to see the answer (39.0K)

  4. A light ray is reflected from a mirror with an angle 10° to the normal. What was the angle of incidence?
    Click here to see the answer (10.0K)

  5. Light travels through a transparent substance at 2.20 × 108 m/s. What is the substance?
    Click here to see the answer (13.0K)

  6. The wavelength of a monochromatic light source is measured to be 6.00 × 10-7 m in a diffraction experiment. (a) What is the frequency? (b)What is the energy of a photon of this light?
    Click here to see the answer (45.0K)

  7. At a particular location and time, sunlight is measured on a 1 square meter solar collector with an intensity of 1,000.0 W. If the peak intensity of this sunlight has a wavelength of 5.60 × 10-7 m, how many photons are arriving each second?
    Click here to see the answer (35.0K)

  8. A light wave has a frequency of 4.90 × 1014 cycles per second. (a) What is the wavelength? (b) What color would you observe (see Table 7.2)?
    Click here to see the answer (14.0K)

  9. What is the energy of a gamma photon of frequency 5.00 × 1020 Hz?
    Click here to see the answer (9.0K)

  10. What is the energy of a microwave photon of wavelength 1.00 mm?
    Click here to see the answer (18.0K)

  11. What is the speed of light traveling through glass?
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  12. What is the frequency of light with a wavelength of 5.00 × 10-7 m?
    Click here to see the answer (25.0K)

  13. What is the energy of a photon of orange light with a frequency of 5.00 × 1014 Hz?
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  14. What is the energy of a photon of blue light with a frequency of 6.50 × 1014 Hz?
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  15. At a particular location and time, sunlight is measured on a onesquare-meter solar collector with an intensity of 1,000.0 watts. If the peak intensity of this sunlight has a wavelength of 5.60 × 10-7 m, how many photons are arriving each second?
    Click here to see the answer (69.0K)






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