Math Help ( Conversions)
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Math Help ( Conversions)

[From: ] [author: ] [Date: 12-07-09] [Hit: ]
ANSWER- I got 5 x 10(to the power of -1) or 0.5 ms. Is this right? I have no idea how i got it.-reaction-time = 5.1 second = 1000 milliseconds,......
I have a question that I am sort of stumped on.

a) A reaction is essentially complete in 5.0 x 10(to the power of-4)seconds. If one millisecond is equal to 10(to the power of negative -3) seconds, how many milliseconds will the reaction take

ANSWER- I got 5 x 10(to the power of -1) or 0.5 ms. Is this right? I have no idea how i got it.

-
reaction-time = 5.0 x 10^-4 seconds

1 second = 1000 milliseconds,
SO,
reaction-time = 1000*(5.0 x 10^-4) = 5 x 10^-1 milliseconds >============< ANSWER
OR,
Reaction-time = 0.5 milliseconds >=============================< ANSWER
Your Answer is Correct. . . . . .

-
5.0 x 10(to the power of-4)seconds=.0005
10(to the power of negative -3) seconds=.001
.0005 is 1/2 of .001 so the reaction takes .5ms
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