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, 22.06.2019 04:20, livigrace9004
Calculate the capacitance of a system that stores 2.0 x 10^-10c of charge at 100.0 v. use c=q/v. a. 2.0 x 10^-12 f b. 2.0 x 10^-8 f c. 5.0 x 10^11 f d. 5.0 x 10^7 f
Answers: 1
Physics, 22.06.2019 10:30, alwaysneedhelp8420
If y gets smaller as x gets bigger and y have an relationship?
Answers: 1
What is the heat transfer by the movement of a fluid?...
English, 04.11.2020 03:10
Mathematics, 04.11.2020 03:10
Mathematics, 04.11.2020 03:10
English, 04.11.2020 03:10
Mathematics, 04.11.2020 03:10
History, 04.11.2020 03:10
Mathematics, 04.11.2020 03:10