anonymous
  • anonymous
Ultraviolent rays, which cause sun burn by penetrating only the top level of kin, have a wavelength about 1000 times the wavelength of an X-ray. Find the wavelength of ultraviolent rays. Show your work.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
Medical X-rays, with a wavelength of about 10 ^-10m, can penetrate completely through you skin.
anonymous
  • anonymous
can u help me...
Frostbite
  • Frostbite
Why don't you just multiply the wavelength of an X-ray with 1000 in order to get the wavewength of a UV ray?

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Frostbite
  • Frostbite
Not sure, but sounds like that it is only that.
Frostbite
  • Frostbite
beside we know that X-rays have a wavelength on about 100 nano meter.. if we take 10^-10 meter and convert to nano meters.. we get 0.1 nm. Multiply that with 1000 and you get 100 nm.
anonymous
  • anonymous
ok so 10^-10m * 1000
Frostbite
  • Frostbite
if I had to guess, yes. Because we know the multiplication factor and one of the wavelengths. However if I were you I would calculate in nano meters. nano = 10^-9
anonymous
  • anonymous
ok this wat i got = 1000000000000
Frostbite
  • Frostbite
wait.. how did you get that huge number?
anonymous
  • anonymous
i got t bye mulitplyn 10^-9*1000
Frostbite
  • Frostbite
I doubt that. Lets do it in the head: \[10^{-9}*1000=10^{-9}*10^{3}=10^{-9+3}=10^{-6}\]
anonymous
  • anonymous
oh ok so the answer is 10^-6
Frostbite
  • Frostbite
wait...
Frostbite
  • Frostbite
it was not 10^-9 but 10^-10
Frostbite
  • Frostbite
\[10^{-10} m*1000=10^{-10} m *10^{3}=10^{-10+3} m=10^{-7} m\] \[10^{-7} m * 10^{9} \frac{ nm }{ m }=100 nm\]
anonymous
  • anonymous
so 100nm is that right
Frostbite
  • Frostbite
Yes 100 nano meters :)
Frostbite
  • Frostbite
I think. not 100% sure if the procedure is right... seems to esay for some reason.
anonymous
  • anonymous
ok so 100nm, can you help me with another one
Frostbite
  • Frostbite
Just post it then I might take a look :)
Frostbite
  • Frostbite
I ment as a question :)
anonymous
  • anonymous
Consider the sequence 2, 6, 18, 54…. Let n= the term number in the sequence. Let A (n) = the value of the nth term of the sequence. 4. What is the common ratio of the sequence? Common ratio: 5. Complete each statement. a. A (1) =2=2*3^? b. A (2) =6=2*3=2*3^? c. A (3) =18=2*3*3=2*3^? d. A (4) =54=2*3*3*3=2*3^? 6. What is the relationship between the exponent of the base 3 and the value of n? 7. Complete the statement: A (n) = 2*3^?
Frostbite
  • Frostbite
Hmmm I think you need to post this as a seperate question, not sure I fully understand the question.
anonymous
  • anonymous
Activity 2 Consider the sequence 2, 6, 18, 54…. Let n= the term number in the sequence. Let A (n) = the value of the nth term of the sequence. 4. What is the common ratio of the sequence? Common ratio: 5. Complete each statement. a. A (1) =2=2*3^? b. A (2) =6=2*3=2*3^? c. A (3) =18=2*3*3=2*3^? d. A (4) =54=2*3*3*3=2*3^?
Frostbite
  • Frostbite
I just ment i don't understand the way they put it... I'm not from the US so I have to translate the words back and forth, and when I do so I get something that don't make sence. All I can say is that you can discribe your function/seq as this: A(n)=2*3^n, n belongs to all whole positive numbers.
anonymous
  • anonymous
ok, is that is that all you get. @Frostbite wat bout you @aspenfields
anonymous
  • anonymous
im just thinking and trying to figure it out atm
anonymous
  • anonymous
haye ca you put that work back to the first one please...@Frostbite
anonymous
  • anonymous
@skullpatrol
anonymous
  • anonymous
ok while we are waitin for that one can u help me with this other one...please!!!
anonymous
  • anonymous
which one
anonymous
  • anonymous
A. What is the common ratio of the sequence 80, 20, 5, 5/4…? Common ratio: B. What are the next three terms in the sequence? Next three terms:
anonymous
  • anonymous
haye can you please help.... @skullpatrol
skullpatrol
  • skullpatrol
Any ideas?
anonymous
  • anonymous
ok are you going tew help me on the first one or the next three term, but with the first one o idea and the second one i do i have 1 idea
skullpatrol
  • skullpatrol
What number do you need to multiply by 80 to get 20?
anonymous
  • anonymous
you cant muliply anything by 80 to get 20 but 20*4 is 80
skullpatrol
  • skullpatrol
How about $$\frac{1}{4}$$
anonymous
  • anonymous
oh so 80 tmes 1/4 is 20
skullpatrol
  • skullpatrol
$$80*\frac{1}{4}=20$$
anonymous
  • anonymous
oh ok so 20*1/4=5
skullpatrol
  • skullpatrol
Yes.
anonymous
  • anonymous
thanks so much ok so can you help me on the other one now.... the first one or do you want me to post it up there
anonymous
  • anonymous
wait can you help me on the next three terms
skullpatrol
  • skullpatrol
Just keep multiplying by 1/4...
anonymous
  • anonymous
ok is the next term 5/16, then 5/64, then 5/256
anonymous
  • anonymous
is that right
anonymous
  • anonymous
are yall still there.@skullpatrol @tayluvsya
anonymous
  • anonymous
@skullpatrol
skullpatrol
  • skullpatrol
Correct.
anonymous
  • anonymous
so i did it right. ok so can you help me on the first one
anonymous
  • anonymous
i really dont get so can you please help me
skullpatrol
  • skullpatrol
What was the question?
anonymous
  • anonymous
Activity 2 Consider the sequence 2, 6, 18, 54…. Let n= the term number in the sequence. Let A (n) = the value of the nth term of the sequence. 4. What is the common ratio of the sequence? Common ratio: 5. Complete each statement. a. A (1) =2=2*3^? b. A (2) =6=2*3=2*3^? c. A (3) =18=2*3*3=2*3^? d. A (4) =54=2*3*3*3=2*3^?
skullpatrol
  • skullpatrol
What do you have to multiply 2 by to get 6?
anonymous
  • anonymous
3
anonymous
  • anonymous
so all of them are three is that alright
skullpatrol
  • skullpatrol
Just like multiplying by 1/4 each time.
anonymous
  • anonymous
ok that i dont get can you please help me i have to turn this in before 12:30
skullpatrol
  • skullpatrol
To get the next term multiply by 3
anonymous
  • anonymous
so a. 6 b.18 c.54 d. 162 is that right
skullpatrol
  • skullpatrol
Yes.
skullpatrol
  • skullpatrol
The whole idea behind these type of questions is to answer: "what do I need to multiply by to get the next term"? and then continue using that number.
anonymous
  • anonymous
so what i got up there are those the right answers....
skullpatrol
  • skullpatrol
Yes.
anonymous
  • anonymous
ok i have 3 more
anonymous
  • anonymous
actually it comes along with it, look back up with the one we just worked out and it says the common ratio, is the ratio times 1/4 or what
anonymous
  • anonymous
haye wat happened @skullpatrol

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