A college student recently had a busy day. Each of
the student’s activities on that day (reading, getting a
dental x-ray, making popcorn in a microwave oven, and
acquiring a suntan) involved radiation from a different
part of the electromagnetic spectrum. Complete the
following table and match each type of radiation to the
appropriate event.
Based off what the information and what I found, which of these factor (Wave length, Frequency, or Energy of Photon) am I suppose to look at when trying to match the events to the data?
Chapter 1: Question 1.9 [ENDORSED]
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 54
- Joined: Fri Sep 29, 2017 7:07 am
- Been upvoted: 5 times
Re: Chapter 1: Question 1.9
You can use the frequencies that you found, and were given to you, to match the events. A lower frequency would mean that it will have a weaker radiation, and higher frequencies would mean it is a stronger type of radiation.
-
- Posts: 51
- Joined: Fri Sep 29, 2017 7:06 am
Re: Chapter 1: Question 1.9
Yup ^^ and because of that, you can also technically look at wavelengths with longer wavelengths having lower radiation and shorter wavelengths with higher radiation
-
- Posts: 58
- Joined: Thu Jul 13, 2017 3:00 am
- Been upvoted: 1 time
Re: Chapter 1: Question 1.9 [ENDORSED]
It helps to think about what kind of wavelength each activity has.
popcorn - microwave
Reading - visible light
Suntan - UV
dental - x ray
You can see the energy increase as you move down the list, the frequency increase, and the wavelength decrease.
Using this, you can reason if your calculated answers make sense.
popcorn - microwave
Reading - visible light
Suntan - UV
dental - x ray
You can see the energy increase as you move down the list, the frequency increase, and the wavelength decrease.
Using this, you can reason if your calculated answers make sense.
-
- Posts: 87
- Joined: Wed Nov 13, 2019 12:18 am
- Been upvoted: 1 time
Re: Chapter 1: Question 1.9
for this specific question, the third part , I converted 300 MHz to Hz and got 3 x 10^8 so when I was doing my calculation I got wavelength as .9 m , can someone explain why the solution says 1 nm, did I mix up some units along the way ?
-
- Posts: 102
- Joined: Fri Sep 24, 2021 7:32 am
Re: Chapter 1: Question 1.9
I have the frequency and wavelength but how do I get the energy of the photon?
-
- Posts: 105
- Joined: Fri Sep 24, 2021 7:22 am
Re: Chapter 1: Question 1.9
Ivan Huang Dis 2B wrote:I have the frequency and wavelength but how do I get the energy of the photon?
Hi Ivan! To find the energy of the photon we need to use the equation E=hv, plugging in plank's constant for h and our frequency for v. That will give you the energy of the photon!
-
- Posts: 107
- Joined: Fri Sep 24, 2021 7:04 am
Re: Chapter 1: Question 1.9
Ivan Huang Dis 2B wrote:I have the frequency and wavelength but how do I get the energy of the photon?
Hello!
So to get the energy of the photon, you would use the equation E(Energy of Photon)= h(planck's constant) x v(frequency).
Hope this helps.
Return to “Properties of Light”
Who is online
Users browsing this forum: No registered users and 11 guests