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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
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Chapter 23 Solutions
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- The electric field of an electromagnetic wave traveling in vacuum is described by the following wave function: E =(5.00V/m)cos[kx(6.00109s1)t+0.40] j where k is the wavenumber in rad/m, x is in m, t s in Find the following quantities: (a) amplitude (b) frequency (c) wavelength (d) the direction of the travel of the wave (e) the associated magnetic field wavearrow_forwardA typical microwave oven operates at a frequency of 2.45 GHz. What is the wavelength associated with the electromagnetic waves in the oven? (a) 8.20 m (b) 12.2 cm (c) 1.20 108 m (d) 8.20 109 m (e) none of those answersarrow_forwardThe 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_forward
- An electromagnetic wave with frequency 7.8x10^14 Hz travels with a speed of 1.5x10^8 m/s in a theoretical Material X.. What is the wavelength of the wave in the Material X? 362 nm 192 nm 5200 nm 250 nmarrow_forwardEMW!!arrow_forwardPolice radar speed guns basically work by reflecting electromagnetic waves off the car’s surface. Suppose you want to drive real fast on the motorway and somehow you have tracked exactly the frequency of police speed radar. The frequency of the police speed radar is f = 1811 Hz. Find its wavelength. Hint c = 3 x 108 No need to include the unit. Write your answer in whole numbers.arrow_forward
- The speed of all empty space is 3.00 × 108 m/s. electromagnetic waves in a) What is the wavelength of radio waves emitted at 98.9 MHz? Answer in units of m. b) What is the wavelength of visible light emitted at 5.9 × 108 MHz? Answer in units of m. c) What is the wavelength of X rays emitted at 3.1 x 10¹2 MHz? Answer in units of m.arrow_forwardA perfectly reflecting thin square mirror 3 m on a side faces the Sun at about Earth's distance from the Sun so that the solar intensity is 1400 W/m. If the mirror has a mass of 10 g and starts from rest, how fast is it moving after 100,000 seconds (a little more than 1 day) in m/s?arrow_forwardAn electromagnetic wave of wavelength 435nm is traveling in a vacuum in the -z-direction. The electric field has an amplitude 2.70×10^−3 V/m2.70×10−3V/m and is parallel to the x-axis. What is the frequency? Express your answer in hertz. What is the magnetic-field amplitude? Express your answer in teslas.arrow_forward
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