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3. What is the wavelength of a 92.9 MHz radio wave?
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- 2. Why not assign 2KHZ bandwidth for FM broadcast instead of the usual 200KHZ bandwidth?1. The team monitoring a space probe exploring the outer solar system finds that radio transmissions from the probe take 2.24 hours to reach earth, How distant (in meters) is the probe?12. When a radio telescope observes a region of space between two stars, it detects electromagnetic radiation that has a wavelength of 0.21 m. This radiation was emitted by hydrogen atoms in the gas and dust located in that region. What is the frequency of this radiation? A) 7.1 x 1010 Hz B) 2.1 × 1014 Hz C) 3.0 × 10% Hz D) 6.9 x 101 Hz E) 1.4 x 10° Hz Ans: E
- 1. A radio station utilizes frequencies between commercial AM and FM. What is the frequency of a 11.2 m- wavelength channel? Given: Required : Equation : Solution : Answer : 2. What is the frequency of an EM wave that is carrying a 2.3x10-8J of energy? Given: Required : Equation : Solution : Answer :19. Calculate the frequency of electromagnetic radiation having a wavelength of 60.0 nm. The speed of light is 3.00 x 10³ m/s. a. 5.00 x 106 S¹ b. 5.00 x 10¹5 S-¹ 2.00 x 10-¹6 S-¹ C. d. 200. s¹1. Solve for the frequency of an electromagnetic radiation with a wavelength of 0.21m. Identify the classification of this electromagnetic wave.
- 5.How does a microwave differ from a gamma ray? A.Gamma rays have lower frequencies than microwaves because they have longer wavelengths. B.Microwaves have lower frequencies than gamma rays because they have shorter wavelengths. C.Microwaves have lower frequencies than gamma rays because they have longer wavelengths. D.Gamma rays have lower frequencies than microwaves because they have shorter wavelengths.a. What is the range of wavelengths for FM radio (90 MHz to 108 MHz)? b. What is the range of wavelengths for AM radio (550 MHz to 1700 MHz)?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,microwaves
- 1. Which of the following has the highest frequency? a. infrared b. microwaves c. ultraviolet d. visible light 2. Which of the following is NOT true about visible light? a. Visible light has a higher frequency than infrared. b. Visible light has a higher frequency than radio waves. c. Visible light has a longer wavelength than infrared ultraviolet d. Visible light has a longer wavelength than infrared microwaves 3. Which of the following has the shortest wavelength? a. infrared b. microwaves c. radio waves d. X-rays 4. Which is NOT true about radio waves? a. Radio waves have a longer wavelength than infrared. b. Radio waves have a shorter frequency than microwaves c. Radio waves have the lowest frequency and longest wavelength d. Radio waves have the lowest frequency and shortest wavelength 5. Which of the following has the lowest frequency? a. gamma rays b. ultraviolet waves c. visible light d. X-rays 6. Which of the following is true about electromagnetic waves? a. They have the…18. The magnetic field of a radio wave in vacuum has amplitude 1.5 x 10-11 T and frequency 100.0 MHz. What is the amplitude of the electric field of this radio wave, in V/m? (1) 9.0 × 10-3 (2) 4.5 × 10-3 (3) 1.35 x 10-2 (5) 3.0 × 10-3 (4) 1.5 x 10-3 19. Two coherent radio-frequency point sources separated by d = 2m radiate in phase at a 05 m A radio wave detector moves in a circular path of some radius R monsures the radio-wave R1. What is the maximum electric field strength in an electromagnetic wave that has a maximum magnetic field strength of 4.20×10-4 T (about 10 times the Earth’s)? This is not and will not be graded