Green light can have a wavelength of 550 nm. What would be the frequency of this light? A. 1.65 x 1014 Hz B. 165 Hz C. 5.45 x 1014 Hz D. 545 Hz
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Green light can have a wavelength of 550 nm. What would be the
A. 1.65 x 1014 Hz
C. 5.45 x 1014 Hz
D. 545 Hz
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- Radar is used to determine distances to various objects by measuring the round-trip time for an echo from the object, (a) How far away is the planet Venus if the echo time is 1000 s? (b) What is the echo time for a car 75.0 m from a highway police radar unit? (c) How accurately (in nanoseconds) must you be able to measure the echo time to an airplane 12.0 km away to determine its distance within 10.0 m?6.a. A light wave has a wavelength of 1,310 nm. What's the frequency of this wave?A. 229 THzB. 914 THzC. 371 THzD. 436 THz 6.b. A light wave has a frequency of 358 THz. What's the wavelength of this wave?A. 917 nmB. 556 nmC. 838 nmD. 1,018 nmA plane wave of light that propagates in vacuum in the x-direction obeys the following function: E(x, t) = (2,000 N/C)sin[(1.26 x 107m-1) − (3.14 x 1015 rad/s)t]. What is the speed of the light wave? a. 3.00 x 108 m/s b. 2.49 x 108 m/s c. 2.13 x 108 m/s d. 1.25 x 108 m/s e. 1.84 x 108 m/s
- Cell phones pick up radio frequencies of approximately 1.85GHz (1.85x109 Hz).a. If the speed of light is ? = 3 × 108m/s, what is the wavelength of these radio waves?b. If I increased the frequency of the radio waves, what would happen to the wavelength?4. An electromagnetic wave has a frequency of 4.40 x 1014 Hz. Which of these expressions would yield the wavelength of this wave in meters? a. 4.40 x 1014 divided by 3.00 x 108 b. 4.40 x 1014 x 3.00 x 108 c. 3.00 x 108 d. 3.00 x 108 divided by 4.40 x 1014 e. 4.40 x 1014 mWhich of the following frequencies corresponds to light with the longest wavelength? a. 8.50 × 1020 s–1 b. 4.12 × 105 s–1 c. 3.20 × 109 s–1 d. 3.00 × 1013 s–1 e. 9.12 × 1012 s–1
- a. What is the frequency of blue light that has a wavelength of 450 nm?b. What is the frequency of red light that has a wavelength of 650 nm?A set of waves has a speed of 4.2 m/s and a frequency of 2.0 Hz. The wavelength is O 3.2 m. O 2.1 m. O 0.48 m. O 8.4 m. O 0.84 m.3.10 The earth is 146.9 million km from the sun, and receives light with an intensity of 1.36 kW/m2. Mars is 227.9 million km from the sun. a. Calculate the intensity of sunlight for a satellite that is in the vicinity of Mars. b. If the satellite has solar cells with an efficiency of 29%, what area is required to generate 1 kW of electrical power?
- cál Sci What is the frequency of a radio wave with a wavelength of 6.00 x 10 m? O A. 5.00 x 10° Hz O B. 2.00 x 10° Hz O C. 1.80 x 10' Hz O D. 1.80 x 10° HzLight has a frequency of 7.21 × 1013 hertz. What is its wavelength? The speed of light is 3.00 × 108 m/s. a. 2.40 × 10−4 nm b. 2.40 × 105 nm c. 2.16 × 109 nm d. 4.16 × 103 nm e. 4.16 × 10−6 nmIf two light rays one has wavelength A = 680 nm and the other one has wavelength опе 2=530 nm. 6. a) Which light rays travels a smaller distance in 1 second? Explain. b) Which light rays has the smaller frequency? Explain.