Earth's rotation rate, then and now. Research with an extinct type of clams that lived 70...
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Earth's rotation rate, then and now. Research with an extinct type of clams that lived 70 million years ago involves the daily growth rings that formed on the shells. Measurements reveal that the day back then was 23.5 hours long. (a) In radians per hour, what is Earth's current rate of rotation w? (b) What was it back then? (c) Back then, how many days were in a year, the time Earth takes to make a complete revolution about the Sun? (a) Number (b) Number i Mi (c) Number i Units Units Units < > Earth's rotation rate, then and now. Research with an extinct type of clams that lived 70 million years ago involves the daily growth rings that formed on the shells. Measurements reveal that the day back then was 23.5 hours long. (a) In radians per hour, what is Earth's current rate of rotation w? (b) What was it back then? (c) Back then, how many days were in a year, the time Earth takes to make a complete revolution about the Sun? (a) Number (b) Number i Mi (c) Number i Units Units Units < > Earth's rotation rate, then and now. Research with an extinct type of clams that lived 70 million years ago involves the daily growth rings that formed on the shells. Measurements reveal that the day back then was 23.5 hours long. (a) In radians per hour, what is Earth's current rate of rotation w? (b) What was it back then? (c) Back then, how many days were in a year, the time Earth takes to make a complete revolution about the Sun? (a) Number (b) Number i Mi (c) Number i Units Units Units < > Earth's rotation rate, then and now. Research with an extinct type of clams that lived 70 million years ago involves the daily growth rings that formed on the shells. Measurements reveal that the day back then was 23.5 hours long. (a) In radians per hour, what is Earth's current rate of rotation w? (b) What was it back then? (c) Back then, how many days were in a year, the time Earth takes to make a complete revolution about the Sun? (a) Number (b) Number i Mi (c) Number i Units Units Units < >
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