College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Chapter 27, Problem 3CQ
To determine
What happens to the wavelength at the peak of the radiation distribution as the temperature increases.
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Suppose that the microwave radiation has a wavelength of 11.6 cm. How many photons are required to heat 265 mL of coffee from 25.0 degrees Celcius to 62.0 degrees Celcius? Assume that the coffee has the same density, 0.997 g/mL, and specific heat capacity, 4.184 J/(g.K), as water over this temperature range.
Calculate the temperature of a blackbody if the spectral distribution peaks at (a) gamma rays, λ = 1.50 x 10-14 m; (b) x rays, 1.50 nm; (c) red light, 640 nm; (d) broadcast television waves, λ = 1.00 m; and (e) AM radio waves, λ = 204m.
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Chapter 27 Solutions
College Physics
Ch. 27.5 - Prob. 27.1QQCh. 27.5 - Prob. 27.2QQCh. 27.5 - Prob. 27.3QQCh. 27.6 - Prob. 27.4QQCh. 27.6 - Prob. 27.5QQCh. 27 - Prob. 1CQCh. 27 - Prob. 2CQCh. 27 - Prob. 3CQCh. 27 - Prob. 4CQCh. 27 - Prob. 5CQ
Ch. 27 - Prob. 6CQCh. 27 - Prob. 7CQCh. 27 - Prob. 8CQCh. 27 - Prob. 9CQCh. 27 - Prob. 10CQCh. 27 - Prob. 11CQCh. 27 - Prob. 12CQCh. 27 - Prob. 13CQCh. 27 - Prob. 14CQCh. 27 - Prob. 15CQCh. 27 - Prob. 16CQCh. 27 - Prob. 1PCh. 27 - Prob. 2PCh. 27 - Prob. 3PCh. 27 - Prob. 4PCh. 27 - Prob. 5PCh. 27 - Prob. 6PCh. 27 - Prob. 7PCh. 27 - Prob. 8PCh. 27 - Prob. 9PCh. 27 - Prob. 10PCh. 27 - Prob. 11PCh. 27 - Prob. 12PCh. 27 - Prob. 13PCh. 27 - Prob. 14PCh. 27 - Prob. 15PCh. 27 - Prob. 16PCh. 27 - Prob. 17PCh. 27 - Prob. 18PCh. 27 - Prob. 19PCh. 27 - Prob. 20PCh. 27 - Prob. 21PCh. 27 - Prob. 22PCh. 27 - Prob. 23PCh. 27 - Prob. 24PCh. 27 - Prob. 25PCh. 27 - Prob. 26PCh. 27 - Prob. 27PCh. 27 - Prob. 28PCh. 27 - Prob. 29PCh. 27 - Prob. 30PCh. 27 - Prob. 31PCh. 27 - Prob. 32PCh. 27 - Prob. 33PCh. 27 - Prob. 34PCh. 27 - Prob. 35PCh. 27 - Prob. 36PCh. 27 - Prob. 37PCh. 27 - Prob. 38PCh. 27 - Prob. 39PCh. 27 - Prob. 40PCh. 27 - Prob. 41APCh. 27 - Prob. 42APCh. 27 - Prob. 43APCh. 27 - Prob. 44APCh. 27 - Prob. 45APCh. 27 - Prob. 46APCh. 27 - Prob. 47APCh. 27 - Prob. 48APCh. 27 - Prob. 49APCh. 27 - Prob. 50APCh. 27 - Prob. 51APCh. 27 - Prob. 52AP
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- A black body at a high temperature T kelvin radiates energy at the rate of E W/m2. If the temperature falls by 30% (i.e., to 0.7*T kelvin), the radiation energy rate will be a) 0.7*E b) E/0.7 c) 0.24*E d) 4.16*Earrow_forwardA furnace emits radiation at 2000 K. Treating it as black body radiation, calculate the wavelength at which the emission is maximum. a.) 1.449 x 10 ^ -6 m b.) 2.449 x 10 ^ -6 m c.) 3.449 x 10 ^ -6 m d.) 4.449 x10 ^ -6 marrow_forwardWhich of the following statements is true regarding how blackbody radiation changes as the temperature of the radiating object increases? 1. Both the maximum intensity and the peak wavelength decrease. 2. Both the maximum intensity and the peak wavelength increase. 3. The maximum intensity increases, and the peak wavelength decreases. 4. The maximum intensity decreases, and the peak wavelength increases.arrow_forward
- Compton scattering can also occur if a photon collides with a proton (mass 1.673 * 10-27 kg) at rest. If you do an experiment of this kind using gamma-ray photons with wavelength 2.50 * 10-12 m = 2.50 pm, for what scattering angle is the wavelength of the scattered gamma rays longer than the wavelength of the incident gamma rays by (a) 0.0100% and (b) 0.0800%?arrow_forwardSuppose that the microwave radiation has a wavelength of 12 cm . How many photons are required to heat 255 mL of coffee from 25.0 ∘C to 62.0 ∘C? Assume that the coffee has the same density, 0.997 g/mL , and specific heat capacity, 4.184 J/(g⋅K), as water over this temperature range.arrow_forwardWhich of the following statements about a black body are true? Select one or more: a.The spectrum of the cosmic background radiation corresponds with great accuracy to the radiation of a black body at a temperature of 2.7 K. b.A black body absorbs all the radiation that hits it, and emits no radiation at all. c.According to Planck's radiation law (black body distribution), the wavelength corresponding to the maximum energy density of the radiation decreases (and the frequency increases) as the temperature increases. d.A black body reflects all the radiation that hits it, and absorbs no radiation at all.arrow_forward
- If 1.88 × 10¹⁸ photons fall per cm² per cm² area of a radiation detector exposed to light coming from a source and the value of 0.77 J cm⁻d min⁻¹ is read from the meter, what should be the wavelength of the incident light?arrow_forwardWhat is the relation between the de Broglie wavelength λ, mass m, and kinetic energy K for (a) a lowenergy proton, and (b) a very high energy proton?arrow_forwardAs noted in the chapter, the cosmic microwave background radiation fits the Planck equation for a blackbody at 2.7 K. (a) What is the wavelength at the maximum intensity of the spectrum of the background radiation? (b) What is the frequency of the radiation at the maximum? (c) What is the total power incident on Earth from the background radiationarrow_forward
- Calculate the kinetic energy (in eV) of a nonrelativistic neutron that has a de Broglie wavelength of 7.9×10-12 m (h = 6.626 × 10-34 J ∙ s, mneutron = 1.675 × 10-27 kg, 1 eV = 1.60 × 10-19 J)arrow_forwardWhat is the energy of a neutron having wavelength 300nm?arrow_forwardCalculate the wavelength (in Å) of the photon incident on a proton initially at rest if the maximum fractional frequency shift Δν/ν0Δν/ν0 of such a photon is 2,29×10−52,29×10−5. The mass of the proton is 1.67×10−271.67×10−27 kg.arrow_forward
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