Imagine that you have a vehicle traveling on Mars. The shortest distance between Earth and Mars is 56×10^6 km;the longest is 400×10^6 km. Find the shortest delay time for the signal that you send to Mars from Earth in seconds.
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Imagine that you have a vehicle traveling on Mars. The shortest distance between Earth and Mars is 56×10^6 km;the longest is 400×10^6 km. Find the shortest delay time for the signal that you send to Mars from Earth in seconds.
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- Radar is used to determine distances to various objects by measuring the round-trip time for an echo from the object. (a) How far away (in m) is the planet Venus if the echo time is 900 s? (b) What is the echo time (in µs) for a car 77.0 m from a Highway Patrol radar unit? us (c) How accurately (in nanoseconds) must you be able to measure the echo time to an airplane 12.0 km away to determine its distance within 10.0 m? ns(a) Suppose a star is 6.42 ✕ 1018 m from Earth. Imagine a pulse of radio waves is emitted toward Earth from the surface of this star. How long (in years) would it take to reach Earth (b) The Sun is 1.50 ✕ 1011 m from Earth. How long (in minutes) does it take sunlight to reach Earth? (c) The Moon is 3.84 ✕ 108 m from Earth. How long (in s) does it take for a radio transmission to travel from Earth to the Moon and back?What is the most amount of time (in minutes) for a signal from the Mars Rover to reach Earth? (This is when Mars and Earth are farthest apart at 401 million km.)