3. The radar in which both transmission and reception is done using the same antenna are called: a) Monostatic radar b) Bistatic radar c) Monopole radar d) Dipole radar
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Q: 11. Consider regions of the EM spectrum. In order to study the structure of a crystalline solid,…
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A: Given data: The magnetic field strength is B=4.50×10-9 T.
Q: 3. A plane radio wave has Em-10-4 V/m. Calculate a) Bm and b) the intensity of the wave, as measured…
A: Given value--- Em = 10-4 V/m We have to find--- Bm ? intensity of wave ?
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Q: Visible light waves, heat rays, X-rays and radio waves all travel at the same speed in vacuum. a)…
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Q: 17. When the light coming from a distant star is photographed on spectrometer, it is observed that…
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Q: . A laser blackboard pointer delivers 0.10-mW average power in a beam 0.90 mm in diameter. Be sure…
A: Average power is given , P=0.10mW= 0.10*10^-3 W Diameter of beam, d=0.90 mm = 0.90*10^-3 m We have…
Q: 3. The radar in which both transmission and reception is done using the same antenna are called: a)…
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- 3. The intensity of an electromagnetic wave is 2.85 kW/m2. The wave strikes perpendicular to a flat, 312 m2 surface that reflects 23% of its intensity and absorbs the rest. a) Find the magnitude of the force that the wave exerts on this surface. b) Find the magnitude of the electric field for this wave.19. A laser uniformly illuminates an area with green light that has an average intensity of 550 W/m2. What is the rms value of the electric field of this light? A) 322 N/C B) 405 N/C C) 455 N/C D) 643 N/C E) 891 N/C Ans: CProblem 5. Assume that electromagnetic propagation through space is what we have been calling "free space." b) How long does it take to communicate with electromagnetic waves from Mars to Earth? Another way of asking this question is how long does it take for an electromagnetic signal originating on Mars to reach Earth? c) for two humans separated by 6 feet, how long does it take for the light reflected off of one person to be seen by the other person?
- 6. List the electromagnetic waves in order of increasing frequency. a. radio waves,gamma rays,visible light,microwaves,ultraviolet rays,X-rays,infrared rays b. radio waves,microwaves,ultraviolet rays,gamma rays,X-rays,visible light,infrared rays c. radio waves,microwaves,infrared rays,visible light,ultraviolet rays,X-rays,gamma rays d. radio waves,gamma rays,X-rays,infrared rays,ultraviolet rays,visible light,microwaves e. radio waves,gamma rays,visible light,ultraviolet rays,infrared rays,X-rays,microwaves4. The magnetic field strength of a wave in a vacuum is given by H= 0.2 cos(10°t - By) a, A/m. In this situation. a) Find the phase constant and wavelength. b) Find the phase velocity and give the direction of wave propagation c) Give the intensity of the electric field for y=1 cm and = 0.1 ns. d) Define the polarization of the wave on the x-y-z plane and draw the polarization site. 336.) Which of the following is true of electromagnetic waves?a. The frequency is the number of vibrations needed to produce a wavelength. b. As the frequency increases, so does the wavelength. c. The frequency of an electromagnetic wave equals the frequency of the vibrating charge that produces the wave.
- 10.) The speed of electromagnetic waves is a. different for each frequency in a vacuum b. less in a vacuum than in water c. 300,000 km/s in a vacuum d. faster than the speed of light in a vacuum4. A spotlight shines onto a square target of area 0.35 m?. If the average rms strength of the magnetic field in the EM waves of the spotlight is 1.2 x 107 T, calculate the energy transferred to the target if it remains in the light for 12 minutes. (Give answer in joules) F3 FB #3 2$ 4 & * 2 3 5 8 9 W E T U KQ1) A 10 GHz uniform plane wave is propagating along the +z - direction, in a material such that & = 81, µr = 1 and σ = 2 mho/m. a) (20 pts.) Find the values of y, a and B. b) (10 pts.) Find the intrinsic impedance. c) (20 pts.) Write the phasor form of electric and magnetic fields, if the amplitude of the electric field intensity is 0.5 V/m.