Answers: 3
Another question on Physics
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, 22.06.2019 20:30
You are doing a science experiment with a fahrenheit thermometer. your data must be in degrees celsius. if you measure a temperature of 125°f, what is this temperature in degrees celsius
Answers: 1
Physics, 23.06.2019 01:30
Which statements did both aristotle and ptolemy assume? check all that apply.
Answers: 1
You know the right answer?
Can someone tutor me in physics. ...
Questions
English, 14.12.2019 16:31
Mathematics, 14.12.2019 16:31
English, 14.12.2019 16:31
Business, 14.12.2019 16:31
Social Studies, 14.12.2019 16:31
