help

Question

help

anonymous · Answer

i need help with a small project and it's only a few questions long. it's about Scientific notation; which is a tool that is used frequently in science, including astronomy, chemistry, biology, and more. I need help converting numbers etc..

anonymous · Answer

@fateal

kohai · Answer

I can help you with scientific notation

anonymous · Answer

okay

anonymous · Answer

http://prntscr.com/4nud0z

kohai · Answer

Okay. Have you started this yet?

anonymous · Answer

not really

kohai · Answer

Okay, the first thing you should do is label each planet on there and look up the distance from the sun in km

anonymous · Answer

alright..

kohai · Answer

And then fill it in and print screen it again, and we can actually work with the scientific notation

anonymous · Answer

give me a moment please

kohai · Answer

No worries

anonymous · Answer

Alright.

anonymous · Answer

@kohai

kohai · Answer

Good, good. So now we're going to look at a few examples to get you into the scientific notation mindset. And then we'll look at your assignment and you should breeze through it. Does that sound okay?

anonymous · Answer

Yeah that sounds great.

kohai · Answer

So we'll look at a few and see if you can see the pattern. If not I can help you

kohai · Answer

24327 = 2.4327 x 10^4

7354 = 7.354 x 10^3

482 = 4.82 x 10^2

Do you notice anything about these?

anonymous · Answer

mm. the equations seem to be backwards? and there's always a decimal in the equations, along with exponents.

kohai · Answer

Right, after the first number there is ALWAYS a decimal. The rest of the numbers shuffle behind it. 

The amount of numbers behind the decimal is the number the exponent winds up being. Count it and see for yourself :) There is also always a x10^n 

Do you see what I mean?

anonymous · Answer

Yes yes, I do.

kohai · Answer

So what is 57349 in scientific notation?

anonymous · Answer

Hm... Is it 5.7349? Is there a x10^n ?

kohai · Answer

There is always a x10^n. So what would the full thing look like?

anonymous · Answer

5.7349 x 10^n?

kohai · Answer

The n is going to be the amount of numbers after the decimal :) It's kind of like a place holder to show that there's something supposed to be there. Very close though!

anonymous · Answer

Oh okay!

kohai · Answer

So there's four numbers after the decimal, so the exponent is going to be 4. 
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