Question

never mind

Answer 1

Naomi: This is far more a question from physics than it is from math. But on the surface the questions asked seem to be pretty straightforward.

X-Rays have wavelength 10^(-10) meter. In part (a), we are told that UV rays have wavelength about 1000 times greater than do x-rays. This seems to call for straightforward multiplication. Think about how you'll respond.

Answer 2

That's progress. Think:\[10^{-10}*10^{3}=?\]

Answer 3

Yes, I believe so. Label it. What does it represent?

Answer 4

You've come up with the wavelength of x-rays.
In part B, you need to compare the other wavelengths given and conclude whether or not each one is longer or shorter (or equal to) the wavelength of x-rays.

Answer 5

Take a look at 6 and 7. Is 6 less than 7, equal to 7, or greater than 7? This part of the problem involves nothing more than comparisons and describing what you see.

Answer 6

You've got exactly the right idea here. Contgrats!

Feel OK with this problem by now?

Answer 7

I agree with your "Part B. 3.8 X 10^-7 m is shorter than 7.6 X 10^-7 m" but aren't you supposed to compare those two limiting values to the wavelength of x-rays?

Answer 8

Exactly the same way.

Answer 9

You have 3 different wavelengths here: 3.8 X 10^-7 m, 7.6 X 10^-7 m, and 1x10^(-7) m. Arrange these in ascending order.

Answer 10

@mathmale is this correct

Answer 11

Beautiful! That's exactly the kind of comparison you were asked to do.

Answer 12

thank you so much

Answer 13

@mathmale could you check my other answers please

Answer 14

: While I strongly prefer not to check answers in the sense of responding with "right" or "wrong", I'd be glad to give you feedback on any description you're willing to share on the steps you've taken to solve a given problem.

Answer 15

N: Are you familiar with the Equation Editor? It's well worth using, and it helps to eliminate any ambiguity in what you're asking. 5^-1(3^-2)

is clearer (at least to me) as\[5^{-(3^{-2})}\] Please compare this to the problem statement. Have I correctly reproduced what the problem statement presents?

Answer 16

Fine. Would you type out some of the steps you've gone thru to simplify it? Then I
'd be able to give you feedback on your approach.

Answer 17

What you're actually doing with p is recognizing that p^0 = 1. You're correct on that.
What next?

Answer 18

Yes, that's correct.

So, you end up with what expression?

Answer 19

Looks fine to me. Are you considering my suggestion that you learn to use Equation Editor?

Answer 20

I appreciate your showing me your own work, as you are doing now.

Answer 21

\[\frac{ mq ^{2} }{ n ^{4} }\]

Answer 22

It requires some time to learn, but once you've begun using it correctly, others will be much more likely to understand what a given homework problem is asking you to do. Clarity is everything.