Physics for Scientists and Engineers with Modern Physics
10th Edition
ISBN: 9781337553292
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 33, Problem 42AP
To determine
The value of
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A uniform beam of laser light has a circular cross section of diameter d = 7.5 mm. The beam’s power is P = 4.9 mW.
(a) Calculate the intensity, I, of the beam in units of W / m2.
(b) The laser beam is incident on a material that completely absorbs the radiation. How much energy, ΔU, in joules, is delivered to the material during a time interval of Δt = 0.89 s? (c) Use the intensity of the beam, I, to calculate the amplitude of the electric field, E0, in volts per meter. (d) Calculate the amplitude of the magnetic field, B0, in teslas.
A parabolic reflector focuses electromagnetic waves into a beam as shown in the figure. The electromagnetic radiation is pulsed, with a pulse frequency of 19.0 GHz, and the duration of each pulse is
t = 1.00 ns.
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(d)
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(e)
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µN
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Chapter 33 Solutions
Physics for Scientists and Engineers with Modern Physics
Ch. 33.1 - Prob. 33.1QQCh. 33.3 - What is the phase difference between the...Ch. 33.3 - Prob. 33.3QQCh. 33.5 - Prob. 33.4QQCh. 33.6 - Prob. 33.5QQCh. 33.7 - Prob. 33.6QQCh. 33.7 - Prob. 33.7QQCh. 33 - Prob. 1PCh. 33 - Prob. 2PCh. 33 - Prob. 3P
Ch. 33 - Prob. 4PCh. 33 - The distance to the North Star, Polaris, is...Ch. 33 - Prob. 6PCh. 33 - Prob. 7PCh. 33 - Prob. 8PCh. 33 - Prob. 9PCh. 33 - Prob. 10PCh. 33 - Prob. 11PCh. 33 - Prob. 12PCh. 33 - If the intensity of sunlight at the Earths surface...Ch. 33 - Prob. 14PCh. 33 - Prob. 15PCh. 33 - Review. Model the electromagnetic wave in a...Ch. 33 - Prob. 17PCh. 33 - Prob. 18PCh. 33 - Prob. 19PCh. 33 - Prob. 20PCh. 33 - Prob. 21PCh. 33 - The intensity of sunlight at the Earths distance...Ch. 33 - Prob. 23PCh. 33 - Prob. 24PCh. 33 - Prob. 25PCh. 33 - Prob. 26PCh. 33 - Extremely low-frequency (ELF) waves that can...Ch. 33 - A large, flat sheet carries a uniformly...Ch. 33 - Prob. 29PCh. 33 - Prob. 30PCh. 33 - Prob. 31PCh. 33 - Prob. 32PCh. 33 - Prob. 33APCh. 33 - Prob. 34APCh. 33 - Prob. 35APCh. 33 - Prob. 36APCh. 33 - Prob. 37APCh. 33 - One goal of the Russian space program is to...Ch. 33 - Prob. 39APCh. 33 - Prob. 40APCh. 33 - Prob. 41APCh. 33 - Prob. 42APCh. 33 - Prob. 43APCh. 33 - Prob. 44APCh. 33 - Review. (a) A homeowner has a solar water heater...Ch. 33 - Prob. 46APCh. 33 - Prob. 47APCh. 33 - Prob. 48APCh. 33 - Prob. 49APCh. 33 - Prob. 50CPCh. 33 - Prob. 51CP
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- At the top of Earth’s atmosphere, the time-averaged Poynting vector associated with sunlight has a magnitude of about 1.49 kW/m2. a. What is the maximum value for the electric field of a wave of this intensity? Give your answer in volts per meter. b. What is the maximum value for the magnetic field of a wave of this intensity? Give your answer in teslas. c. What is the total power radiated by the sun? Assume that the Earth is 1.5×10111.5×1011 m from the Sun and that sunlight is composed of electromagnetic plane waves. Give your answer in watts.arrow_forwardAt one location on the Earth, the rms value of the magnetic field caused by solar radiation is 1.80 μT. From this value, calculate (a) the rms electric field due to solar radiation, (b) the average energy density of the solar component of electromagnetic radiation at this location, and (c) the average magnitude of the Poynting vector for the Sun’s radiation.arrow_forwardWhat is the radiation pressure 1.5 m away from a 500 W lightbulb? Assume that the surface on which the pressure is exerted faces the bulb and is perfectly absorbing and that the bulb radiates uniformly in all directionsarrow_forward
- Consider the situation shown in the figure. A uniform electric field in the z-direction (towards you from the paper plane) with a value given by E =a.t and a uniform magnetic field in the z-direction with a value given by B=b.t are given. Both areas are limited to a circular region with radius R. If the magnitude of the electric field induced at point a=1V/m.s, b=1T/s and P on the circumference of the circle is 9000 V/m in 2.seconds,what is the magnitude of the magnetic field induced at point P at t =2 seconds? (in picoTesla) (hint:in the absence of free flow, you can use time dependent maxwell equation)arrow_forwardWhen an electric current flows through the filament of an incandescent light bulb, it gets very hot and glows (or incandesces). Consider a particular bulb with a filament with 140 Ω resistance which carries a current of 1.00 A. Assume the length of the filament is L = 9.00 cm long with a radius of r = 0.900 mm. (a) Calculate the Poynting vector (in kW/m2) at the surface of the filament, associated with the static electric field producing the current and the current's static magnetic field. magnitude: ? kW/m2 direction: Radially inward or outward? (b) Find the magnitudes of the static electric field (in kV/m) and static magnetic field (in µT) at the surface of the filament. electric field: ? kV/m magnetic field: ? µTarrow_forwarda long, straight copper wire (diameter 2.50 mm and resistance 1.00 ohm per 300 m) carries a uniform current of 25.0 A in the positive x direction. For point P on the wire’s surface, calculate the magnitudes of (a) the electric field , (b) the magnetic field , and (c) the Poynting vector , and (d) determine the direction of S.arrow_forward
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