COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 22, Problem 10QAP
To determine
The comparison of visible light in vacuum with x rays.
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a) Calculate the range of wavelengths (in m) for X-rays given their frequency range is 30,000 to 3.0 ✕ 107 THz.
smaller value? m
larger value? m
(b) Do the same for the visible light frequency range of 380 to 760 THz.
smaller value? m
larger value ? m
The photoelectric effect can be used in engineering designs for practical applications. For example, infrared goggles used in night-vision applications have materials that
give an electrical signal with exposure to the relatively long wavelength of IR light. If the energy needed for signal generation is 6.4 x 10-20 J, what is the minimum
wavelength? What is the frequency of light that can be detected?
c = 2.998 x 10° m/s
h = 6.626 x 10-34 J s
s-1
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Consider six proposed properties of electromagnetic radiation: wave speeds of 3.00 x 10° km/s and 3.00 × 10³m/s, wavelengths
of 423 nm and 0.281 nm, and frequencies of 2.03 × 1018 Hz and 7.49 x 1014 Hz. Place these according to whether they apply
only to the X-ray band, only to the visible light band, to both bands, or to neither band.
X-ray band only
Visible light band only
Both bands
Neither band
Answer Bank
frequency of 2.03 × 1018 Hz
frequency of 7.49 × 1014 Hz
wavelength of 0.281 nm
wavelength of 423 nm
speed of 3.00 x 10® km/s
speed of 3.00 × 10³ m/s
Chapter 22 Solutions
COLLEGE PHYSICS
Ch. 22 - Prob. 1QAPCh. 22 - Prob. 2QAPCh. 22 - Prob. 3QAPCh. 22 - Prob. 4QAPCh. 22 - Prob. 5QAPCh. 22 - Prob. 6QAPCh. 22 - Prob. 7QAPCh. 22 - Prob. 8QAPCh. 22 - Prob. 9QAPCh. 22 - Prob. 10QAP
Ch. 22 - Prob. 11QAPCh. 22 - Prob. 12QAPCh. 22 - Prob. 13QAPCh. 22 - Prob. 14QAPCh. 22 - Prob. 15QAPCh. 22 - Prob. 16QAPCh. 22 - Prob. 17QAPCh. 22 - Prob. 18QAPCh. 22 - Prob. 19QAPCh. 22 - Prob. 20QAPCh. 22 - Prob. 21QAPCh. 22 - Prob. 22QAPCh. 22 - Prob. 23QAPCh. 22 - Prob. 24QAPCh. 22 - Prob. 25QAPCh. 22 - Prob. 26QAPCh. 22 - Prob. 27QAPCh. 22 - Prob. 28QAPCh. 22 - Prob. 29QAPCh. 22 - Prob. 30QAPCh. 22 - Prob. 31QAPCh. 22 - Prob. 32QAPCh. 22 - Prob. 33QAPCh. 22 - Prob. 34QAPCh. 22 - Prob. 35QAPCh. 22 - Prob. 36QAPCh. 22 - Prob. 37QAPCh. 22 - Prob. 38QAPCh. 22 - Prob. 39QAPCh. 22 - Prob. 40QAPCh. 22 - Prob. 41QAPCh. 22 - Prob. 42QAPCh. 22 - Prob. 43QAPCh. 22 - Prob. 44QAPCh. 22 - Prob. 45QAPCh. 22 - Prob. 46QAPCh. 22 - Prob. 47QAPCh. 22 - Prob. 48QAPCh. 22 - Prob. 49QAPCh. 22 - Prob. 50QAPCh. 22 - Prob. 51QAPCh. 22 - Prob. 52QAPCh. 22 - Prob. 53QAPCh. 22 - Prob. 54QAP
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- (1) (a) What is the wavelength of a 25.75 × 10° Hz radar signal? (b) What is the frequency of an X-ray with wave- length 0.12 nm? (1) An EM wave has frequency 8.56 x 10¹4 Hz. What is its wavelength, and how would we classify it? 1.165x 10 m 2.5 x 10⁰ Hz 3.50 x 10 m ultraviolet.arrow_forwardConsider six proposed properties of electromagnetic radiation: wave speeds of 3.00 x 10° km/s and 3.00 x 10°m/s, wavelengths of 403 nm and 0.123 nm, and frequencies of 3.01 x 10 Hz and 6.60 x 1014 Hz. Place these according to whether they apply only to the X-ray band, only to the visible light band, to both bands, or to neither band. X-ray band only Visible light band only Both bands Neither band Answer Bank wavclength of 403 nm speed of 3.00 x 10 km/s frequency of 3.0o1 x 10 Hz speed of 3.00 x 10 m/s frequency of 6.60 x 104 Hz wavelength of 0.123 nmarrow_forwardConsider six proposed properties of electromagnetic radiation: wave speeds of 3.00 x 10° km/s and 3.00 x 10°m/s, wavelengths of 563 nm and 0.193 nm, and frequencies of 2.15 x 1018 Hz and 6.26 x 1014 Hz. Place these according to whether they apply only to the X-ray band, only to the visible light band, to both bands, or to neither band. X-ray band only Visible light band only Both bands Neither band Answer Bank frequency of 6.26 × 1014 Hz. speed of 3.00 x 10* m/s speed of 3.00 x 10* km/s frequency of 2.15 × 10'8 Hz wavelength of 0.193 nm wavelength of 563 nmarrow_forward
- A laser can suspend a small glass sphere in Earth's gravitational field, g = 9.80 m/s2. Assume that the suspended sphere is made of perfectly absorbing black glass. The sphere has a radius of 0.560 mm and a density of 0.190 g/cm3. Determine the radiation intensity needed to keep the small glass sphere suspended. (answer in kW / cm^2)arrow_forwardAn electromagnetic wave is a transverse wave with only a time-varying magnetic field. transverse wave with time-varying electric and magnetic fields. transverse wave with only a time-varying electric field. longitudinal wave with time-varying electric and magnetic fields. O longitudinal wave with either a time-varying electric or magnetic field.arrow_forwardIn which part of the electromagnetic spectrum are each of these waves:(a) f = 10.0 kHz, (b) f = λ = 750 nm ,(c) f = 1.25 × 108 Hz , (d) 0.30 nmarrow_forward
- An x-ray tube is operated at 48900 V. Calculate the minimum wavelength of the radiation emitted by this tube. If this radiation is directed at a crystal, the first-order maximum in the reflected radiation occurs when the angle of incidence is 2.93o. What is the spacing between reflecting planes in the crystal?arrow_forwarded k ces A particular form of electromagnetic radiation has a frequency of 2.74 × 10¹5 Hz. (a) What is the wavelength in nanometers? In meters? Enter your answer in scientific notation. x 10 x 10 (b) To which region of the electromagnetic spectrum would you assign it? X-ray visible nm microwave m infrared ultraviolet radio wave gamma ray x 10 (c) What is the energy (in joules) of one quantum of this radiation? Enter your answer in scientific notation. Jarrow_forward1) A certain star is 16.1 million light-years from Earth. The intensity of the light that reaches Earth from the star is 3.20 × 10−21 W/m2. At what rate does the star radiate EM energy?2) The intensity of solar radiation that falls on a detector on Earth is 1.00 kW/m2. The detector is a square that measures 5.11 m on a side and the normal to its surface makes an angle of 30.0° with respect to the Sun’s radiation. How long will it take for the detector to measure 424 kJ of energy?3) Unpolarized light passes through two ideal polarizers in turn with polarization axes at 43.9° to each other. What is the fraction of the incident light intensity that is transmitted?arrow_forward
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