The natural phenomena could be taken as alternative time standards.

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Chapter 1, Problem 3CQ

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The natural phenomena could be taken as alternative time standards.

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Until 1883, every city and town in the United States kept its own local time. Today, travelers reset their watches only when the time change equals 1.0 h. How far, on average, must you travel in degrees of longitude between the time zone boundaries at which your watch must be reset by 1.0 h? (Hint: The Earth rotates 360° in about 24 h.)

1) Mr. Smith has planned to stop to the hospital for his yearly check-up. The graph below shows his journey from home to the hospital and his return. Mr. Smith left home at 10:00am. 50 40 30 20 10 1 2 Time (hours) (a) How far is the hospital from Mr. Smith's home? (b) What time did Mr. Smith arrive at the hospital? (c) How long did his visit last? (d) How long did the journey home take? (e) The journey to and from is the same distance, suggest a reason why the return trip took longer than the trip to the hospital. Distance (kilometers) 3.

Until 1883, every city and town in the United States kept its own local time. Today, travelers reset their watches only when the time change equals 1.0 h. How far, on the average, must you travel in degrees of longitude until your watch must be reset by 10 hours? (Hint: Earth rotates 360° in about 24 h.)