![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Physics
![question](/tpl/images/cats/fizika.png)
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
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 10:50
The temperature at a point (x, y) is t(x, y), measured in degrees celsius. a bug crawls so that its position after t seconds is given by x = 6 + t , y = 8 + 1 3 t, where x and y are measured in centimeters. the temperature function satisfies tx(3, 9) = 5 and ty(3, 9) = 4. how fast is the temperature rising on the bug's path after 3 seconds? (round your answer to two decimal places.)
Answers: 3
![question](/tpl/images/cats/fizika.png)
You know the right answer?
Best summarizes the law of conservation of energy?...
Questions
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 06.09.2020 21:01
![question](/tpl/images/cats/health.png)
Health, 06.09.2020 21:01
![question](/tpl/images/cats/mat.png)
Mathematics, 06.09.2020 21:01
![question](/tpl/images/cats/mat.png)
Mathematics, 06.09.2020 21:01
![question](/tpl/images/cats/biologiya.png)
Biology, 06.09.2020 21:01
![question](/tpl/images/cats/mat.png)
Mathematics, 06.09.2020 21:01
![question](/tpl/images/cats/en.png)
English, 06.09.2020 21:01
![question](/tpl/images/cats/istoriya.png)
History, 06.09.2020 21:01
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mkx.png)
Arts, 06.09.2020 21:01
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.09.2020 21:01
![question](/tpl/images/cats/mat.png)
Mathematics, 06.09.2020 21:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.09.2020 21:01
![question](/tpl/images/cats/mat.png)
Mathematics, 06.09.2020 22:01
![question](/tpl/images/cats/mat.png)
Mathematics, 06.09.2020 22:01