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GR8677 #69 |
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Alternate Solutions |
ben
2006-07-19 15:54:53 | i think an easier way to do it that gives the exact answer without having to memorize a table is to simply solve for v explicitly in the equation 3/sqrt(1-v^2/c^2)=5. just square both sides and you'll find that v^2/c^2=16/25 at which point the answer is obvious. |  |
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Comments |
barefoot0
2006-11-27 12:23:00 | But 16/25 is .64 not .8 so you would get answer B instead. But ETS said answer C is correct.
barefoot0
2006-11-27 12:25:13 |
never mind I forgot to take the square root.
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|  | nitin
2006-11-21 04:19:22 | trombone,
I think you need to check yourself out. You're acting like a kid, and your aim is clearly to insult me, which is a shame since I did not address you in anyway. Your attitude is that of a moron, and Lubos Motl has given a good definition of it. |  | nitin
2006-11-16 11:25:38 | Another nonsensical solution...
Ben is right, and I simply don't understand why you decide to change from the fractional form " " to the decimal form " ", which drives you into a long mess!
trombone
2006-11-18 19:16:45 |
The only nonsensical thing here is you bitching about the method that was used. Post a better solution if you have one, otherwise stop whining.
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| | tera
2006-08-13 07:38:59 | The comment of ben is quite correct iti isd very simply because the square roots become precise
| | ben
2006-07-19 15:54:53 | i think an easier way to do it that gives the exact answer without having to memorize a table is to simply solve for v explicitly in the equation 3/sqrt(1-v^2/c^2)=5. just square both sides and you'll find that v^2/c^2=16/25 at which point the answer is obvious. | |
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