Physics, 05.10.2020 14:01 torybobadilla
when energy is transfered from one part of a system to another some of the energy is lost durring the transfer and cannot be used as it was intended which two sentences describe examples of this
Answers: 1
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.
Answers: 1
Physics, 23.06.2019 00:50
Which of the following is not an appropriate unit for acceleration? (kg/12 mihr? m/min/sec cm/30c?
Answers: 2
when energy is transfered from one part of a system to another some of the energy is lost durring th...
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