Inquiry into Physics
8th Edition
ISBN: 9781337515863
Author: Ostdiek
Publisher: Cengage
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Chapter 8, Problem 28Q
To determine
The reason why X-Rays are more strongly absorbed by bones than by muscles and other tissues.
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Gamma-ray detectors like the one described in the preceding problem often use calorimetry to determine gamma-ray energies. Suppose a beam of 100-MeV gamma rays strikes a target with a mass of 2.5 kg and specifi c heat 430 J/(kg # K). How many gamma rays are needed to raise the target’s temperature by 10 mK?
Q6. When a slab of material is inserted between a collimated 60Co source and a detector, it is
found that the fluxes of 1.17 and 1.33 MeV gamma-rays are reduced, respectively, to 62 and
65% of their values with no absorbers. Calculate the ratio of the attenuation coefficient of the
material for the two energies. What would be the reduction in the fluxes if two slabs were used?
Ionizing radiation enters a Geiger tube with 1.45 MeV of energy. As the radiation passes through the tube, all of this energy goes into
creating ion pairs and each ion pair requires 30 eV of energy.
(a) If an applied voltage sweeps these ions out of the gas in 1.10 µs, determine the current (in A).
1.19e-8
X
What is the definition of current? How many electronic charges constitute an ion pair? How can you determine the number of ion
pairs created? A
(b) Since the applied voltage in the Geiger tube accelerates these separated ions, creating other ion pairs in subsequent collisions, the
actual current is greater than that determined in part (a). If this effect multiplies the number of ion pairs by 880, determine the
actual current (in A).
1.05e-6
X
How is the increase in current related to the increase in number of ion pairs? A
Chapter 8 Solutions
Inquiry into Physics
Ch. 8 - Give two lessons that may be learned from the...Ch. 8 - Prob. 1AACh. 8 - Prob. 2AACh. 8 - Prob. 1PIPCh. 8 - Prob. 2PIPCh. 8 - Prob. 1MIOCh. 8 - Prob. 2MIOCh. 8 - Prob. 1QCh. 8 - Prob. 2QCh. 8 - (Indicates a review question, which means it...
Ch. 8 - Prob. 4QCh. 8 - (Indicates a review question, which means it...Ch. 8 - Prob. 6QCh. 8 - Prob. 7QCh. 8 - Prob. 8QCh. 8 - Prob. 9QCh. 8 - Prob. 10QCh. 8 - Prob. 11QCh. 8 - Prob. 12QCh. 8 - Prob. 13QCh. 8 - Prob. 14QCh. 8 - Prob. 15QCh. 8 - Prob. 16QCh. 8 - (Indicates a review question, which means it...Ch. 8 - (Indicates a review question, which means it...Ch. 8 - Prob. 19QCh. 8 - (Indicates a review question, which means it...Ch. 8 - Prob. 21QCh. 8 - Prob. 22QCh. 8 - (Indicates a review question, which means it...Ch. 8 - Prob. 24QCh. 8 - Prob. 25QCh. 8 - Prob. 26QCh. 8 - Prob. 27QCh. 8 - Prob. 28QCh. 8 - Prob. 29QCh. 8 - Prob. 30QCh. 8 - Prob. 31QCh. 8 - Prob. 32QCh. 8 - Prob. 33QCh. 8 - Prob. 34QCh. 8 - Prob. 35QCh. 8 - Prob. 36QCh. 8 - Prob. 37QCh. 8 - Prob. 38QCh. 8 - The charger cord used to recharge a cell phone...Ch. 8 - The generator at a power plant produces AC at...Ch. 8 - Compute the wavelength of the carrier wave of your...Ch. 8 - What is the wavelength of the 60,000-Hz radio wave...Ch. 8 - Compute the frequency of an EM wave with a...Ch. 8 - Prob. 6PCh. 8 - Determine the range of wavelengths in the UV...Ch. 8 - A piece of iron is heated with a torch to a...Ch. 8 - The filament of a light bulb goes from a...Ch. 8 - Prob. 10PCh. 8 - Prob. 11PCh. 8 - Prob. 12PCh. 8 - Prob. 13PCh. 8 - Prob. 14PCh. 8 - Prob. 15PCh. 8 - Prob. 16PCh. 8 - Earth’s magnetic field lines are not parallel to...Ch. 8 - A cyclometer is a device mounted on a bicycle that...Ch. 8 - Prob. 3CCh. 8 - The right-hand rule is a way to determine the...Ch. 8 - Prob. 5CCh. 8 - If a coil of wire is connected to a very sensitive...Ch. 8 - Prob. 7CCh. 8 - Prob. 8CCh. 8 - Prob. 9CCh. 8 - Prob. 10CCh. 8 - Prob. 11C
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