+1-415-670-9189
info@expertsmind.com
How large a radio telescope would need to detect
Course:- Physics
Reference No.:- EM1349708




Assignment Help
Expertsmind Rated 4.9 / 5 based on 47215 reviews.
Review Site
Assignment Help >> Physics

Q. A wire streches from the top of a vertical pole to a point on level ground 16 feet from the base of the pole. if the wire makes an angle of 62 degrees withe the ground, find the height of the pole and the length of the wire.

Q. Consider a civilization broadcasting a signal with a power of 1.8×104 watts. The Arecibo radio telescope, which is about 300 meters in diameter, could detect this signal if it is coming from as far away as 134 light-years. Suppose instead that the signal is being broadcast from the other side of the Milky Way Galaxy, about 70000 light-years away.

How large a radio telescope would we need to detect this signal? (Hint: Use the inverse square law for light.)




Put your comment
 
Minimize


Ask Question & Get Answers from Experts
Browse some more (Physics) Materials
Calculate the boy's speed when he hits the water. How much time is required for the boy to reach the water? How far horizontally will the boy travel before he hits the water?
For light with a wavelength of 600 nanometres, what are the conditions for destructive interference at point P? The path difference should be one fourth the wavelength.
A 5 m deep river runs on a horizontal 7 m long bridge and 8.5 m wide, which is hung in air 10 m high above the ground. What is the normal force exerted upwards by the bridge
A satellite orbits at a distance from the Earth's center of about 6.20 Earth radii and takes 21.7 hours to go around once. What distance (in meters) does the satellite travel
A car is initially 4.0km south of a gas station and is moving with a constant speed of 55km/h due north. How far are the vehicles from the gas station when they pass each othe
The focal length of the eyepiece of a certain microscope is 18.5 mm . The focal length of the objective is 7.85 mm. What is the distance from the objective to the object being
A prescription for a corrective lens calls for + 3.20D . The lensmaker grinds the lens from a "blank" with n = 1.56 and a preformed convex front surface of radius of curvatu
A disk among vertebrae in the spine is subjected to a shearing force of 630 N. Discover its shear deformation taking it to have the shear modulus of 1*109 N/m2. The disk is eq