Physics, 16.10.2020 18:01 chimbali9736
What is the mass of a 7 kg bowling ball on the moon?
Answers: 1
Physics, 21.06.2019 18:10, eweqwoewoji
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, 21.06.2019 23:10, theh301234
6–55 refrigerant-134a enters the condenser of a residential heat pump at 800 kpa and 358c at a rate of 0.018 kg/s and leaves at 800 kpa as a saturated liquid. if the compressor consumes 1.2 kw of power, determine (a) the cop of the heat pump and (b) the rate of heat absorption from the outside air.
Answers: 2
Physics, 22.06.2019 00:40, yaneiryx5476
Aballet student who learns with the of his instructor is demonstrating learning.
Answers: 3
Physics, 22.06.2019 02:30, ayoismeisjuam
What are the factors that affect the resistance of a wire?
Answers: 1
What is the mass of a 7 kg bowling ball on the moon?...
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