Physics, 08.06.2021 17:30, lealiastentz532542
A lens with a focal length of 20 cmcm is placed 45 cmcm in front of a lens with a focal length of 5.0 cm. How far from the second lens is the final image of an object infinitely far from the first lens?
Answers: 2
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Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.
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Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?
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Matter that emits no light at any wavelength is called
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A lens with a focal length of 20 cmcm is placed 45 cmcm in front of a lens with a focal length of 5....
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