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




Assignment Help
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
A hollow, conducting sphere with an outer radius of 0.246m and an inner radius of 0.195m has a uniform surface charge density of +6.35×10?6C/m^2. find the strength of the ele
How many lines per centimeter must a grating have if there is to be nosecond-orderspectrum for any visible wavelength (400–750 nm)? (State the maximum number of lines per cent
A ball attached to a string starts at rest and undergoes a constantangular acceleration as it travels in a horizontal circle of radius0.30m. What is the tangential accelerat
Two diffraction patterns are formed on the screen. What is the distance between the common center of the diffraction patterns and the first occurrence of the spot where the d
A compound microscope has an objective lens of focal length 10.0 mm with an eyepiece of focal length 15.2 mm , and it produces its final image at infinity. How far from the
A man of mass m stands on a crate of mass M. He pulls on a light rope passing over a smooth light pulley. The other end of the rope is attached to the crate. For the system
If a person radiates about 66 W of power at room temperature, how long does it take for person to radiate away the energy acquired by consuming a 230 Calorie doughnut.
A proton with a kinetic energy of 3GeV is travelling in the synchrotron. Assume the synchlotron can be considered as a set of dipole magnets with a uniform magnetic field B