Answer:
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{Note: Answer shown in attached figure, as well}.
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1.0 * 10⁻¹² seconds in one picosecond ;
or, write as: 0.0000000000010 seconds in one picosecond;
or, write as: 1 / (1.0 * 10¹²) seconds per picosecond .
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{See attached figure}.
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Explanation:
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Given:
(3.6 * 10¹⁵ picoseconds) / 1 hr ; find out how many "picosecond(s)" in "1 second"?
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[ (3.6 * 10¹⁵ picosec.) / (1 hr)] * (1 hr / 60 min) * (1 min / 60 sec)
= ?? picoseconds/ sec. ? ;
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→ = [(3.6 * 10¹⁵) / (60*60)] picoseconds/ sec. ;
→ = [(3.6 * 10¹⁵) / (3600)] picoseconds/ sec. ;
→ = 1,000,000,000,000 picoseconds / sec. ;
→ = (to use "2 significant figures"), write as:
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→ = 1.0 * 10¹² picoseconds /sec.
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Note: The question asks, how many "fractions of a second" (i.e., how many second(s) is "one picoseconds".
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Since we have:
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(1.0 * 10¹² picoseconds) /sec. ;
→ then: 1 sec / (1.0 * 10¹² picoseconds) =
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→ [ 1 / (1.0 * 10¹² picoseconds ] sec / picoseconds =
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→ 0.000000000001 sec PER picosecond;
→ to rewrite; retaining 2 (TWO) significant figures;
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{continued; in this attached figure}:
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