College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Chapter 27, Problem 9CQ
To determine
Rank the de Broglie wavelengths of a proton, ant and a baseball from smallest to largest.
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H.W.1: Find the kinetic energy of a proton whose de Broglie wavelength is 1.000 fm = 1.0x1015 m, which is roughly the proton diameter
At very low temperature, the de Broglie wavelengths of the atoms in a gas can become larger than the distance between atoms, which leads to new states of matter. In an early study, a gas of 23Na was cooled to 200 nK. What is the de Broglie wavelength of the sodium atoms at this temperature? To get a sense of scale, at everyday temperatures and pressures, the distance between air molecules is about 3 nm. How does the de Broglie wavelength compare to this distance? (The gas in the study was much more diffuse than this, but the atoms were close enough for some overlap.)
A proton is moving with a speed of v = 1.20 x 10° m/s. What is its de Broglie wavelength (in m)?
m
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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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- An X-ray tube has an applied voltage of 100 kV. (a) What is the most energetic X-ray photon it can produce? Express your answer in electron volts and joules. (b) Find the wavelength of such an X-ray.arrow_forwardWhat is the de Brogue wavelength of an electron travelling at a speed of 5.0106 m/s ?arrow_forwardWhat is the de Brogue wavelength of an electron that is accelerated from rest through a potential difference of 20 keV?arrow_forward
- A 6.0-gram champagne cork is shot out of an opened champagne bottle and traveled at a speed of 65 km/hour. Calculate the de Broglie wavelength (in meters) of the cork.arrow_forwardFind the de Broglie wavelength of a proton (mp = 1.67 10-27 kg) moving with a speed of 1.11 107m/s.?p = marrow_forwardJohn Isner holds the ATP's (Association of Tennis Professionals) official record for the fastest serve at 253 km/h. Calculate the de Broglie wavelength of a tennis ball with the standard weight of 58.8 grams. Give your answer in 10-34 m (for example, if your answer is 5.6x10-34 m, then enter 5.6). This should give you a good idea of why one cannot expect to observe interference affects using tennis balls rather then, for example, electrons.arrow_forward
- An electron and a 6.70 kg bowling ball each have 4.25 eV of kinetic energy. HINT (a) Calculate 1, the de Broglie wavelength of the electron (in m). e' (b) Calculate 1, the de Broglie wavelength of the bowling ball (in m). (c) Calculate the wavelength å, of a 4.25 eV photon (in m). d.arrow_forwardThe wavelengths of visible light range from approximately 400400 to 750 nm750 nm. Part (a) What is the minimum energy for a photon in this range? Give your answer in electron volts. Part (b) What is the maximum energy for a photon in this range? Give your answer in electron volts.arrow_forwardAn electron is accelerated from rest through a potential difference so that the de broglie wavelength is 400pm. Find potential difference is needed? And what would the potential difference need to be to accelerate a proton until it reaches the wavelength?arrow_forward
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