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Spring98
 one year ago
Part A: The sun produces 3.9 • 10^33 ergs of radiant energy per second. How many ergs of radiant energy does the sun produce in 2.45 • 10^5 seconds?
Part B: Which is the more reasonable measurement of the distance between the tracks on a DVD:
7.4 • 10^–4 mm or 7.4 • 10^4 mm? Justify your answer.
Spring98
 one year ago
Part A: The sun produces 3.9 • 10^33 ergs of radiant energy per second. How many ergs of radiant energy does the sun produce in 2.45 • 10^5 seconds? Part B: Which is the more reasonable measurement of the distance between the tracks on a DVD: 7.4 • 10^–4 mm or 7.4 • 10^4 mm? Justify your answer.

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welshfella
 one year ago
Best ResponseYou've already chosen the best response.1Part A Just multiply the 2 numbers

Spring98
 one year ago
Best ResponseYou've already chosen the best response.1the answer would be 9.555

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1Part B 7.4 * 10^4 mm = 74 meters

Spring98
 one year ago
Best ResponseYou've already chosen the best response.1wait so is that how i really do it?^

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1The first part is 9.555 but what about the exponent of 10 ??

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1you also have to multiply 10^33 and 10^5

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1No you ADD the exponents

Spring98
 one year ago
Best ResponseYou've already chosen the best response.1oops ok so it is 10^40

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1* sorry 9.555 * 10^38

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1No ergs amount of radiant energy

Spring98
 one year ago
Best ResponseYou've already chosen the best response.1thank you very much. You are the best helper ever!! :)

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1yw as for part B the distances will be very small right? and numbers like 10^4 are very large!!!
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