Yesterday your chronometer read 11h 59m 59s...

Question 1 of 2707066636ee928f7522a1c51a79d

Yesterday your chronometer read 11h 59m 59s at 1200 GMT time tick. Today the chronometer reads 12h 00m 01s at the 1200 GMT tick. What is the chronometer rate?

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Question 1 of 27070

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Yesterday your chronometer read 11h 59m 59s at 1200 GMT time tick. Today the chronometer reads 12h 00m 01s at the 1200 GMT tick. What is the chronometer rate?

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🔍 Key Concepts

• chronometer error (difference between chronometer time and true GMT at a given instant) • chronometer rate (change in chronometer error per 24 hours) • how to tell if a chronometer is fast or slow

💭 Think About

• At 1200 GMT, if your chronometer shows a time slightly before 1200, is it fast or slow? What about if it shows a time slightly after 1200? • Find the chronometer’s error on the first day and on the second day. Did the error increase or decrease from one day to the next? • Once you know how many seconds the error changed in 24 hours, decide whether that means the chronometer is gaining or losing time.

✅ Before You Answer

• Compute yesterday’s error and today’s error relative to 1200 GMT before looking at the choices. • Check the direction of change: is the chronometer getting closer to correct time or farther away? • Make sure the sign of the rate matches the behavior: a chronometer that is gaining time has one sign; a chronometer that is losing time has the opposite sign.