How much power do the radio waves carry

Assignment Help Physics

Reference no: EM13493290

A source of radio waves is emitted from the center of our galaxy 1.8 x 104 light years away. 1.5 pW (picowatts) of power from these waves blankets the entire surface of the Earth.

a) What is the intensity of the radio waves? (Take the diameter of the Earth to be 12.7 x 103 km.)

b) How much power do the radio waves carry?

c) How much power from these radio waves is received by the Arecibo radio antenna located in Puerto Rico? (The Arecibo antenna is 300 m in diameter.) This is the minimum intensity wave that can be detected by the Arecibo antenna!

Reference no: EM13493290

Questions Cloud

Evaluate the concentration of h3o in a solution : Calculate the concentration of H3O in a solution that contains 5.5 x 10^-5 M OH at 25 degrees celsius. Identify the solution as acid, basic, or neutral.

Find the mean delay e(t) and the average wait time e(w) : Consider a statistical multiplexer (or a data concentrator) in which the input packets from terminals connected to it are merged in order of arrival in a buffer and are then read out first come-first served over an outgoing transmission link. ..

Determine the total cost to redecorate the mayor offices : Overhead is applied to contracts by using a predetermined overhead rate that is based on direct professional labor cost. Actual professional labor during the year was $655,000 and actual overhead was $793,000.

Explain how many grams of barium sulfate are produced : How many grams of barium sulfate are produced if 25.34mL of 0.1133 M BaCl2 completely react given the reaction. BaCl2(aq)+Na2SO4-BaSO4(s)+2NaCl(aq)

How much power do the radio waves carry : A source of radio waves is emitted from the center of our galaxy 1.8 x 104 light years away. How much power do the radio waves carry

Define cell is constructed of two hydrogen electrodes : A concentration cell is constructed of two hydrogen electrodes. The pressure of H2 is 1.00 atm in each hydrogen electrode. One of the electrodes is immersed in a solution with [H+] = 1.0 M and the other in a solution with 0.62 M NH3. What will be ..

How much work does the kid do on the toy : A kid picks up a toy of mass 139g, from the floor. The kid lifts the toy 42.2cm above the floor. How much work does the kid do on the toy

What are the transport protocols : What mechanism is used to detect/avoid/correct data transmission collision in Layer 2, such as Ethernet and WiFi? Describe the mechanism in sufficient details.

Describes what ethics and professional conduct means : Ethics and professional conduct are extremely important in the workplace and different professions have different requirements and expectations of the people within the professions.

User Account

All Pages