![subject](/tpl/images/cats/fizika.png)
Large radio telescopes, like the one in Arecibo, Puerto Rico, can detect extremely weak signals. Suppose one radio telescope is sensitive enough to detect a signal which lays down only 0.95 pW of power on an area of 6.1 × 1017 m2. (a) What would be the total power that would be received by the antenna, assuming that its diameter is 380 m? (b) What would be the power of a source at 17000 ly distance from Earth that could provide such a signal? A light-year is the distance light travels in one year.
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Other questions on the subject: Physics
![image](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 03:50, am2garcia5
A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c
Answers: 3
![image](/tpl/images/cats/fizika.png)
![image](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 09:00, SisterMina
The material that keeps its new shape after it is stretched is called?
Answers: 1
You know the right answer?
Large radio telescopes, like the one in Arecibo, Puerto Rico, can detect extremely weak signals. Sup...
Questions in other subjects:
![Konu](/tpl/images/cats/mat.png)
Mathematics, 26.07.2021 14:50
![Konu](/tpl/images/cats/fizika.png)
Physics, 26.07.2021 14:50
![Konu](/tpl/images/cats/en.png)
English, 26.07.2021 14:50
![Konu](/tpl/images/cats/en.png)
English, 26.07.2021 14:50
![Konu](/tpl/images/cats/himiya.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 26.07.2021 14:50
![Konu](/tpl/images/cats/mat.png)
Mathematics, 26.07.2021 14:50
![Konu](/tpl/images/cats/biologiya.png)
Biology, 26.07.2021 14:50
![Konu](/tpl/images/cats/himiya.png)
Chemistry, 26.07.2021 14:50