Physics, 05.03.2020 22:22 mpjoserivera
In a certain set of organ pipes, the pipe length for the note _5 (=524Hz) is 30cm. How long a pipe do you expect for _4 (=262Hz) ? What frequency and what length for _3 one octave lower than _4 ?
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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 λ = 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 22:40
In physics the desire of an object to keep doing what it is doing is termed?
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Physics, 22.06.2019 00:30
Which is not one of the major climate zones? question 3 options: rain forest polar tropical temperate
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Physics, 22.06.2019 02:30
If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?
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In a certain set of organ pipes, the pipe length for the note _5 (=524Hz) is 30cm. How long a pipe d...
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