College Physics
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Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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• A cell phone transmits at a frequency of 1.94 * 109
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the wavelength of the
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- Electromagnetic radiation from the sun reaches the earth at a rate 1370W/m^2. The radius of the sun is 6.96x10^8m and the distance from the center of the sun to earth is 1.5x10^11. Assume solar radiation reaches sun as single wave. A) what is the electric field amplitude of solar radiation when it reaches earth ? b)what is total energy radiated by sun in 2.5 seconds give answer in J c) if we assume sun emits like a black oft with emissivity e=1 calculate the temperature on the surface of Sun in Celsius Please show workarrow_forward75cm The intensity of sunlight sdeiking the earth is 1.4kW/m². what is the maximum power that could possibly be abrorbed by the earcth? (The earth's radius is 4000 miles) How does this Compare with the average power dlemands af humankind! Given the earth-sun distarice of 93 million miles, of I50 million miles, and the mars -Sun distance what is the intenrity of sunlight shriking mars? The 6 pluto-sun dirtance is about 4. billion miles; what is intinidy on pluta?arrow_forwardAn electromagnetic wave has wavelength λ and frequency f. What is the frequency of an electro-magnetic wave whose wavelength is 2λ?arrow_forward
- The average intensity of an EM wave is 4.50×10^7 W/m^2. What is the peak amplitude of the electric field of this wave? What is the peak amplitude of the magnetic field of this wave?arrow_forwardAn electromagnetic wave in vacuum has an electric field amplitude of 510 V/m. Calculate the amplitude of the corresponding magnetic field. nTarrow_forwardWhat is the magnetic field strength (B) for an electromagnetic wave that has an electric field strength E)=770 V/m? = T ) Note that you can enter the answer in scientific notation using "E": x.yz times 109 is represented as x.yzEq. For example, 1.23 x 10-9 can be entered as 1.23E-9.arrow_forward
- What is the maximum value of the electric field in an electromagnetic wave whose maximum intensity is 7.55 W>m2?arrow_forwardMehularrow_forwardAn electromagnetic wave propagates according to the equation (in picture) in a polarized state. Determine the wavelength and period of the EM wavearrow_forward
- A plane electromagnetic wave is traveling in a vacuum. The magnetic field is directed along the z-axis and given by: B, = 3.0µT sin ((1.0 × 107 )x - (3.0 × 1015 )t ) a) Determine the wavelength , of the wave. b) What is the frequency, f, of the wave in Hertz? c) Determine the maximum strength of the B-field. d) Determine the maximum strength of the E-field and it direction. e) Can you find a time and place when the B-field is zero? f) What is the strength of the E-field when the B-filed is zero?arrow_forwardA sinusoidal electromagnetic wave emitted by a cellular phone has a wavelength of 35.9 cm and an electric-field amplitude of 5.60×10−2 V/m at a distance of 350 m from the antenna. Calculate the frequency of the wave. f=?Hz Calculate the magnetic-field amplitude.Bmax=?T Find the intensity of the wave.I=?W/m^2arrow_forwardPlease keep all decimalsarrow_forward
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