Engineering, 10.11.2019 03:31, stephanieb75
Frank d. drake, an investigator in the seti (search for extra-terrestrialintelligence) program, once said that the large radio telescope in arecibo, puerto rico, can detect a signal which lays down only a picowatt of power over entire surface of theearth. what is the power received by the radio telescope if the diameter of the antenna is300 m? what would be the power of the source at the center of our galaxy which couldprovide such a signal? the center of galaxy is 22000 light years away. assume thatsource is radiating uniformly in all directions and that the earth is a disk with the radiusof 6378 km.
Answers: 3
Other questions on the subject: Engineering
Engineering, 03.07.2019 14:10, makaylashrout77
Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.
Answers: 2
Engineering, 04.07.2019 18:10, settasav9641
Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.
Answers: 3
Engineering, 04.07.2019 18:10, Larkinlover703
Items are similar to the free issue items, but their access is limited. (clo5) a)-bin stock items free issue b)-bin stock controlled issue c)-critical or insurance spares d)-rebuildable spares e)-consumables
Answers: 1
Do you know the correct answer?
Frank d. drake, an investigator in the seti (search for extra-terrestrialintelligence) program, once...
Questions in other subjects:
Mathematics, 18.03.2022 19:20
Mathematics, 18.03.2022 19:20
Physics, 18.03.2022 19:20
