Physics, 12.11.2019 22:31 gkasshy334
Asolid sphere, solid cylinder, and a hollow pipe all have equal masses and radii. if the three of them are released simultaneously at the top of an inclined plane and do not slip, which one will reach the bottom first?
(a) sphere
(b) pipe
(c) cylinder
(d) the pipe and cylinder arrive together before the sphere.
(e) they all reach the bottom at the same time.
Answers: 1
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The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.
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To fully describe the photoelectric effect, scientists must consider which of the following to be quantized? o a. both light and matter o b. matter only o c. light only o d. neither light nor matter
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