Question

Will fan and medal!!!
The frequency of a given region of the electromagnetic spectrum ranges from 4 × 10¹Ê to 7.5 × 10¹Ê Hz. The speed of light is
2.998 × 10§ m/s. Which waves are found in this region?

microwaves

infrared waves

visible light

ultraviolet reays

Answer 1

@Teddyiswatshecallsme

Answer 2

I know it's not microwaves, my teacher told me that much, but I'm at a loss for the rest.

Answer 3

@MTALHAHASSAN2

Answer 4

Your exponential numbers are not clear! If you use the formula wavelength = speed of light / frequency and work out the wavelengths for both of your frequencies and compare with the approximate values given below, you will be able to answer this question.

microwaves 1 x 10^-3m - 1m
infrared 1 x 10^-3m - 1 x 10^-6m
visible 1 x 10^-6m - 1 x 10^-7m
UV 1 x 10^-8 - 1 x 10^-9m.

Also, have a look at some of the electromagnetic images on the internet e.g yahoo.images!
You will find this v.useful!

Answer 5

I found this on google 5 different times and it wasn't helpful >.< I don;t understand how to do this and I can't make it anymore clear, it is a question from my quiz I copied it word for word, I have to answer using the information they gave me

Answer 6

oh ok

Answer 7

So no ideas? Because I don't know what to do and if I don't pass my quiz it'll bring my whole grade down

Answer 8

which grade question is it

Answer 9

I think 12th grade, do you know someone who might know?

Answer 10

ok let me find anyone then

Answer 11

i will advice you to try this website they are goona help you faster over there
www.peeranswer.com

Answer 12

You know that speed of light=(frequency)(wavelength)
All those waves in the choices all have different wavelength.
Frequency is in hertz
Speed of light is 3.00 x 10^8
You were given frequency and speed of light.
Now find the wavelength.
If the wavelength has the same exponent in scientific notation to one of the waves, then it is that one.

Answer 13

I still have no clue what it would be.. @Shalante

Answer 14

What is number for speed of light?

Answer 15

2.998 × 10§ m/s

Answer 16

which is?

Answer 17

How you would insert that variable in a scientific calculator?

Answer 18

29.88?

Answer 19

Read my explanation.

Answer 20

I did I don;t know how to do that so it doesn't help me. I barely understood it

Answer 21

All you do is read in my explanation to know the number for speed of light.
If you cant do that, then I dont know.
It is going to take a while. (A huge waste of time)

Answer 22

Try to focus and reread it several times carefully

Answer 23

Also, if you are asking for help, ask which part that you do not understand one at a time chronologically.

Answer 24

The numbers them selves confuse me, I don't know how to set up my equation I guess you could say

Answer 25

Ah, I see
3.00 x 10^8=\[3.00\times10^8\]
So what are the number for speed of light and frequency?

Answer 26

Well when I multiplied what they they give me 300,000,000

Answer 27

Hertz can be written as hz
Did you pass Algebra 1?
Since you are in chemistry and are that far, I assumed you have a good math background.

Answer 28

Yes 300,000,000 is normal number for this question.

Answer 29

....no I'm horrible at math.... like horribly horrible

Answer 30

So from there where would we go?

Answer 31

Speed of light=(frequency)(wavelength)
Speed of light is in the unit m/s
Wavelength is in the unit m
Frequency is in hertz or hz
Which of those are given in the problem. (meaning they have a number)

Answer 32

Frequency?

Answer 33

What about frequency?

Answer 34

Reread your problem several times carefully to get a better understanding of what I am saying

Answer 35

Sorry my computer died yesterday and is 300,000,000 the wavelength?

Answer 36

@ChiefArnav

Answer 37

I'll stick to @Shalante's explanation.

Answer 38

Well I never got to finish talking with him and now he's off line and I'm stuck

Answer 39

Providing a link:
http://www.davidterr.com/science-articles/electromagnetic_spectrum.html

Answer 40

I'm still confused and my teacher is getting mad at me. Any way you could let me know what it is then explain how you got that?

Answer 41

The ans is visible light...

Answer 42

not 100% sure though

Answer 43

Thank you, it was right. Could you show me how you got that?

Answer 44

All I used was the given frequency.

Answer 45

Each part of the spectrum has a name and frequency.
Like
Gamma rays
they have a frequency of 3 time 10^19 hz

Answer 46

Wavelength less than one nm if you wanted t know.

Answer 47

to*

Answer 48

Still in doubt,@WhatEven ?

Answer 49

No I understand a little better now. Could you help with one more?