How long (in seconds) does it take for a radio wave of frequency 8.94 × 106 s–1 to reach Mars when Mars is 8.2 × 107 km from Earth?

Liight travels 300,000 Km in one second through vacuum..So deepening upon the distance time varies. Sun 8.2 minutes Proxima century 4.2 years. Sirius 8.3 years. Andromeda galaxy 2.5...

Speed of ,light in vacuum is 300,000KM. so 150,000,000 divided by 300,000.=500 seconds.=8.33 minutes.

Light travels at 300,000 kilometers/second. About 12 minutes.is the answer.

150,000,000 divided by 300,000=500 seconds or 8.333 minutes.

THe time taken will be depend upon the distances. Sun 8.3 minutes Proxima centuari 4.243 years. Andromeda galaxy 2.5 million years.

But the Gama rays produced in the core travels through the gases of Sun and takes million years to reach its surface as they collided with atoms...During the travel it...

Earth goes round in 365.24 days and mars in 687 days. So both planets comes near only once i n 2 years. So if we choose the proper launch window...

Phoenix communicate to earth through Mars Reconnaissance Orbiter which in orbit around Mars. Light travels through vacuum at speed of 300,000 kilometer/second. 1 AU=149000000 kilometers. so aproximately 12 minutes...

We know that: $x_(1)106.9059 + x_(2)108.9047 = 107.8682$ $(i)$ $x_(1) + x_(2) = 1$ $(ii)$ We assume that silver has only the 2 , which for a first approximation...

Using my (not very precise) periodic table, I get the mass of Ag as 107.87. This must be a combination of these two . So the % of the other...