which statement best describes both sound and light waves
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- which statement best describes both sound and light waves.
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- Two light pulses are emitted simultaneously from a source. Both pulses travel to a detector, but one first passes through 6.30 m of ice. Determine the difference in the pulses' times of arrival at the detector.If the intensity of light is 6 x 10-2 watts/m? at a distance of 3 meters from the source, what is the intensity of the light at a distance of 9 meters from the source? 3.10² 106 Increasing frequency, f (Hz): 104 106 1 Radio waves (low f, longa) AM 104 10² Decreasing wavelength,λ (m) 108 FM TV 1 1010 Microwave Radar 10-2 10¹2 700 nm 10-4 1014 Infrared 10-6 600 nm 1016 Ultra- violet 10-8 Visible light 1018 X rays 10-10 500 nm 1020 1022 Gamma (y) waves (high f, short 2) 10-12 10-14 400 nm 1024
- A laser emits a beam of monochromatic light with frequency 4.40 x 10^14 Hz. What color is the laser beam? yellow blue violet redWhat experiment(s) show light acting as a wave? Explain in no more than 2 sentences. What experiment(s) shows light acting like a particle? Explain in no more than 2 sentences.What is the Doppler-shifted wavelength of a red (660 nm) traffic light approached at 65 m.p.h.? At what speed would it appear green (520 nm)?
- A spherical source of light with a diameter Deource = 3.55 cm radiates light equally in all directions, with power P = 4.10 W. (a) Find the light intensity (in kW/m2) at the surface of the light source. |kW/m² (b) Find the light intensity (in mW/m2) r = 7.10 m away from the center of the light source. mW/m2 (c) At this 7.10 m distance, a lens is set up with its axis pointing toward the light source. The lens has a circular face with a diameter of Dlens = 16.0 cm and has a focal length of f = 34.0 cm. Find the diameter (in cm) of the light source's image. cm (d) Find the light intensity (in W/m2) at the image. |W/m210² 106 Increasing frequency, f (Hz): 104 106 1 Radio waves (low f, longa) AM 104 10² Decreasing wavelength,λ (m) 108 FM TV 1 1010 Microwave Radar 10-2 10¹2 700 nm 10-4 1014 Infrared 10-6 600 nm 1016 Ultra- violet 10-8 Visible light 1018 X rays 10-10 500 nm 1020 1022 Gamma (y) waves (high f, short 2) 10-12 10-14 400 nm 1024The thickness of the plastic in plastic bags is about 0.001 mm. How many wavelengths of red light is that?