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Question: On a spacecraft sent to Mars to take pictures, the camera is trigered by radio waves, which, like all electromagnetic waves, travel with the speed of light. The speed of light is 3 × 10^8 m/s and the distance to Mars is 9.7 × 10^10 m. What is the time delay between sending the signal from Earth and receiving the signal on Mars?
The time delay, t, can be calculated through the equation t=d/v, where d is the distance, and v is the speed of the light. Given: d= 9.7 × 10^10 m v= 3 × 10^8 m/s Substitute these values into the equation: t = (9.7 × 10^10 m) / (3 × 10^8 m/s) This simplifies to approximately 323 seconds or about 5.4 minutes. Hence, the time delay between sending the signal from Earth and receiving the signal on Mars is about 5.4 minutes.
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