# Calculate square roots

i'm doing my online hw as we speak and they problem i'm on is this

Use your calculator to find the square root of 6.70 × 10^-19

and i calculated that problem in my calculated and i got

6.7e^-19 and i typed it in my hw and its giving me an error and saying
"This question expects a numeric answer"

can anyone help me?

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i guess just try to type it in as

6.70 × (10^(-19))

nick727kcin said:
i guess just try to type it in as

6.70 × (10^(-19))
I just tried that and it didn't work and i got this message

"Only a number required. Computer reads units of "× (10^(-19))".

Integral
Staff Emeritus
Gold Member
What am I missing here? 6.7e-19 is NOT the square root of 6.7e-19.

As a side note generally when the e notation is used you do to superscript it.

berkeman
Mentor
TMNT said:
i'm doing my online hw as we speak and they problem i'm on is this

Use your calculator to find the square root of 6.70 × 10^-19

and i calculated that problem in my calculated and i got

6.7e^-19 and i typed it in my hw and its giving me an error and saying
"This question expects a numeric answer"

can anyone help me?
Well first of all, your answer is not correct. You show the same number again, just with a different exponential notation. As for getting the online parser to accept your answer, just type it exactly in the same format that it is showing you its question number in. Look at where there are spaces, and how it is showing exponential notation.

As berkeman said, the answer is not correct.

But I want to point out my feelings towards the notation.
esomething typically means the exponent function - that is, the base of the natural log (e ~= 2.7).

If you want to denote 10^something, use either a*10b or aEb (the latter being more of an engineer's notation).

This is just my opinion, but I think most will agree using "aeb" is deceiving.