Asked by Anonymous
Calculate the following numbers into scientific notation (include units)'
1) 7800 nm + 95 pm =
(would it be 7.8x10^7pm) ?
2) (65x10 4m) x (4.5x10-6s-1) =
(the 4 is meant to be a little 4 and the -6 and -1 are meant to be small)
1) 7800 nm + 95 pm =
(would it be 7.8x10^7pm) ?
2) (65x10 4m) x (4.5x10-6s-1) =
(the 4 is meant to be a little 4 and the -6 and -1 are meant to be small)
Answers
Answered by
drwls
1) 7800 nm + 95 pm = 7.800*10^-9 m + 9.5*10^-11 m = 7.8095*10^-9 m
This should be "rounded off" to 7.810*10^-9 m based upon the number of significant figures in the 7800 nm figure, which I assume to be 4.
2) (65x10 4m) x (4.5x10-6s-1) = 2.925 m/s
This should be rounded off to 2.93 m/s
This should be "rounded off" to 7.810*10^-9 m based upon the number of significant figures in the 7800 nm figure, which I assume to be 4.
2) (65x10 4m) x (4.5x10-6s-1) = 2.925 m/s
This should be rounded off to 2.93 m/s
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