Matt6288
  • Matt6288
I need a math wizard! What is wrong with the dimensional analysis work in the following problem in which 5 feet/second was converted to miles per hour?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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Matt6288
  • Matt6288
5feet/second was converted to miles per hour? 5feet/1second*1mile/5280feet*1minute/60s… ≈ 0.0001 miles per hour.
Matt6288
  • Matt6288
A. In the first conversation ratio, the second should be on top and the feet should be on bottom. B. In the second conversation ratio, the feet should be on top and the mile should be on bottom. C. In the third conversion ratio, the seconds should be on top and the minutes should be on the bottom. D. In the fourth conversation ratio, the hour should be on top and the minutes should be on bottom.
amistre64
  • amistre64
\[\frac{ft}{sec}\frac{sec}{min}\frac{min}{hr}=\frac{ft}{hr}\] \[\frac{ft}{hr}\frac{mile}{ft}=\frac{mile}{hr}\]

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amistre64
  • amistre64
or some versions of that
amistre64
  • amistre64
so the min/sec that they have is not a healthy operation
Matt6288
  • Matt6288
so it would be A?
amistre64
  • amistre64
hard to tell, that last bit needs to be an sec/hr i believe
amistre64
  • amistre64
5feet 1mile 1minute sec feet sec is what they got so feet are off the top and we got mile/sec we need sec/hr to finish up
amistre64
  • amistre64
the third conversion ... hard to count them, is whats bad at any rate
amistre64
  • amistre64
is ft/sec the 1st conversion or the is it not counted as a conversion?
amistre64
  • amistre64
ok, it reads as the first; so C is your best pick. oy that was torture :)
Matt6288
  • Matt6288
Thx :)

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