Somebody answer i desperately need !
insects preserved with little or no change can be...
Physics, 09.01.2020 13:31 realmofgrads23
Somebody answer i desperately need !
insects preserved with little or no change can be found in fossilized blank.
Answers: 2
Physics, 21.06.2019 18:10
Scientists use laser range-finding to measure the distance to the moon with great accuracy. a brief laser pulse is fired at the moon, then the time interval is measured until the "echo" is seen by a telescope. a laser beam spreads out as it travels because it diffracts through a circular exit as it leaves the laser. in order for the reflected light to be bright enough to detect, the laser spot on the moon must be no more than 1.0 km in diameter. staying within this diameter is accomplished by using a special large-diameter laser. part a if Ī» = 540nm , what is the minimum diameter of the circular opening from which the laser beam emerges? the earth-moon distance is 384,000 km. express your answer to two significant figures and include the appropriate units.
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Physics, 21.06.2019 18:40
An observer that stands still as the electron moves by him, will observe
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Physics, 22.06.2019 02:00
The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e
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Physics, 22.06.2019 14:00
What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration
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History, 22.10.2019 21:50
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Mathematics, 22.10.2019 21:50