Physics for Scientists and Engineers
10th Edition
ISBN: 9781337553278
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 38, Problem 49AP
Review. Around the core of a nuclear reactor shielded by a large pool of water. Cerenkov
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High-Energy Cancer Treatment.
Scientists are working on a new technique
to kill cancer cells by zapping them
with ultrahigh-energy (in the range of
1012 W) pulses of light that last for an
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e 8.85 x 10-¹2 C²/Nm²
Chapter 38 Solutions
Physics for Scientists and Engineers
Ch. 38.1 - Which observer in Figure 38.1 sees the balls...Ch. 38.1 - A baseball pitcher with a 90-mi/h fastball throws...Ch. 38.4 - Suppose the observer O on the train in Figure 38.6...Ch. 38.4 - A crew on a spacecraft watches a movie that is two...Ch. 38.4 - You are packing for a trip to another star. During...Ch. 38.4 - You are observing a spacecraft moving away from...Ch. 38.6 - You are driving on a freeway at a relativistic...Ch. 38.8 - The following pairs of energiesparticle 1: E, 2E;...Ch. 38 - In a laboratory frame of reference, an observer...Ch. 38 - Prob. 2P
Ch. 38 - A meterstick moving at 0.900c relative to the...Ch. 38 - A muon formed high in the Earths atmosphere is...Ch. 38 - A deep-space vehicle moves away from the Earth...Ch. 38 - An astronaut is traveling in a space vehicle...Ch. 38 - For what value of does = 1.010 0? Observe that...Ch. 38 - You have been hired as an expert witness for an...Ch. 38 - A spacecraft with a proper length of 300 m passes...Ch. 38 - A spacecraft with a proper length of Lp passes by...Ch. 38 - A light source recedes from an observer with a...Ch. 38 - A cube of steel has a volume of 1.00 cm3 and mass...Ch. 38 - Review. In 1963, astronaut Gordon Cooper orbited...Ch. 38 - You have an assistantship with a math professor in...Ch. 38 - Police radar detects the speed of a car (Fig....Ch. 38 - Shannon observes two light pulses to be emitted...Ch. 38 - A moving rod is observed to have a length of =...Ch. 38 - A rod moving with a speed v along the horizontal...Ch. 38 - A red light flashes at position xR = 3.00 m and...Ch. 38 - You have been hired as an expert witness in the...Ch. 38 - Figure P38.21 shows a jet of material (at the...Ch. 38 - A spacecraft is launched from the surface of the...Ch. 38 - Calculate the momentum of an electron moving with...Ch. 38 - Prob. 24PCh. 38 - Prob. 25PCh. 38 - Prob. 26PCh. 38 - An unstable particle at rest spontaneously breaks...Ch. 38 - (a) Find the kinetic energy of a 78.0-kg...Ch. 38 - Prob. 29PCh. 38 - Prob. 30PCh. 38 - Protons in an accelerator at the Fermi National...Ch. 38 - You are working for an alternative energy company....Ch. 38 - The total energy of a proton is twice its rest...Ch. 38 - When 1.00 g of hydrogen combines with 8.00 g of...Ch. 38 - The rest energy of an electron is 0.511 MeV. The...Ch. 38 - Prob. 36PCh. 38 - Prob. 37PCh. 38 - Prob. 38PCh. 38 - Prob. 39PCh. 38 - An unstable particle with mass m = 3.34 1027 kg...Ch. 38 - Review. A global positioning system (GPS)...Ch. 38 - Prob. 42APCh. 38 - An astronaut wishes to visit the Andromeda galaxy,...Ch. 38 - Prob. 44APCh. 38 - Prob. 45APCh. 38 - The motion of a transparent medium influences the...Ch. 38 - An object disintegrates into two fragments. One...Ch. 38 - Prob. 48APCh. 38 - Review. Around the core of a nuclear reactor...Ch. 38 - Prob. 50APCh. 38 - Prob. 51APCh. 38 - Prob. 52APCh. 38 - Prob. 53CPCh. 38 - A particle with electric charge q moves along a...Ch. 38 - Suppose our Sun is about to explode. In an effort...
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- (a) Find the momentum of a 100-keV X-ray photon. (b) Find the velocity of a neutron with the same momentum. (c) What is the neutron’s kinetic energy in eV?arrow_forwardAround the core of a nuclear reactor shielded by a large pool of water, Cerenkov radiation appears as a blue glow (see figure below). Cerenkov radiation occurs when a particle travels faster through a medium than the speed of light in that medium. It is the electromagnetic equivalent of a bow wave or a sonic boom. An electron is traveling through water at a speed 7.2% faster than the speed of light in water. U.S. Department of Energy/Photo Researchers, Inc. (a) Determine the electron's total energy. MeV (b) Determine the electron's kinetic energy. MeV (c) Determine the electron's momentum. MeV/c (d) Find the angle between the shock wave and the electron's direction of motion. Oarrow_forwardAround the core of a nuclear reactor shielded by a large pool of water, Cerenkov radiation appears as a blue glow (see figure below). Cerenkov radiation occurs when a particle travels faster through a medium than the speed of light in that medium. It is the electromagnetic equivalent of a bow wave or a sonic boom. An electron is traveling through water at a speed 7.2% faster than the speed of light in water. U.S. Department of Energy/Photo Researchers, Inc. (a) Determine the electron's total energy. X Your response differs from the correct answer by more than 10%. Double check your calculations. MeV (b) Determine the electron's kinetic energy. X Your response differs from the correct answer by more than 100%. MeV (c) Determine the electron's momentum. X Your response differs from the correct answer by more than 10%. Double check your calculations. MeV/c (d) Find the angle between the shock wave and the electron's direction of motion. Oarrow_forward
- The most energetic electromagnetic waves in the universe are gamma-rays from gamma ray bursts (GRBs) from collapsing massive stars, observed by satellites with expected energies of 100 TeV (1 TeV = 1012eV). 1. What is the frequency of these energetic gamma ray photons? 1 eV = 1.60 x 10-19 J. 2. What is the wavelength?arrow_forwardMultiple-Concept Example 6 explores the approach taken in problems such as this one. Quasars are believed to be the nuclei of galaxies in the early stages of their formation. Suppose a quasar radiates electromagnetic energy at the rate of 1.5 × 104¹ W. At what rate (in kg/s) is the quasar losing mass as a result of this radiation? Number i A quasar at the center of a spiral galaxy Unitsarrow_forwardthe US, Verizon's new 5G signal uses electromagnetic waves of frequency 28 GHz, which is 28 x 10^9 Hz. a. What wavelength of light is this? b. What kind of electromagnetic wave is this (radio, infrared, x-ray, etc)? C. Your microwave oven uses electromagnetic waves of frequency 2.4 GHz or 2.4 x 10^9 Hz. The energy contained in a photon is directly proportional to its frequency. This means that: Everizon 28 x 10°HZ W hile EMicrowave Oven x 2.4 × 10°HZ How many times more energy does a photon from the Verizon cell signal have than the photon from your microwave? Compare that to the previous (4G LTE) signal of 700 MHz or 7 x 10^8 Hz. (Before you get too worried remember that total energy delivered is related to intensity as well, not just individual photon energy. You can blind yourself with a red laser, but not with a dim red penlight of the same frequency, for example). acearrow_forward
- EM radiation has an average intensity of 2900 W/m2. Which of the following statements about the E or B fields in this radiation is correct? Bmax = 4.93 x 10-6 T Brms = 4.17 x 10-6 T Erms = 806.2 N/C Emax = 1131.6 N/Carrow_forwardE14P8arrow_forwardA spacecraft in orbit around the moon measures its altitude by reflecting a pulsed 10 MHz radio signal from the surface. If the spacecraft is 10 km high, what is the time between the emission of the pulse and the detection of the echo?A. 33 ns B. 67 nsC. 33 μs D. 67 μsarrow_forward
- A star’s spectrum emits more radiation with a wavelength of 690.0 nm than with any other wavelength. If the star is 9.78 ly from Earth and its radius is 7.20 × 108 m, what will an Earth-based observer measure for this star’s intensity? Stars are nearly perfect blackbodies. (Note: ly stands for light-years.) Answer in W/m2arrow_forwardThere are several proteins that exist in nature that are fluorescent, which means they absorb visible light or other electromagnetic radiation and reemit that light, usually at a longer wavelength. One of the more prevalent fluorescent proteins is GFP, or green fluorescent protein, which emits bright green fluorescent light when exposed to light in the blue to ultraviolet region of the electromagnetic spectrum (see the photo). The main absorption, or excitation, wavelength for one type of GFP is 395 nm. (a) What is the energy (in eV) of a photon in this absorbed light? The emission spectrum of the light from the GFP peaks near 509 nm, which is in the shorter wavelength (higher energy) portion of the green part of the visible spectrum. (b) What is the energy (in eV) of a photon in the emitted light? (c) If the emitted light corresponded to the longest wavelength in the Balmer series from a hydrogen-like atom, what would be the effective value of Z for this atom? (Note: Z will not be a…arrow_forwardAn electromagnetic wave of frequency 4.4 x 1012 Hz propagates with speed 0.89c. Calculate the wavelength, in mm. Use two significant figures in your answer.arrow_forward
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