Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
junior college 2 | H2 Maths
One Answer Below
Anyone can contribute an answer, even non-tutors.
Physics
Hi, i dont understand the given solution in green. Can anybody ne help explain?
Date Posted: 6 years ago
Views: 457
See 1 Answer
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Be wary what does n stands for in the question
Date Posted:
6 years ago
Thanks! May i know why is hf/c is change in momentum?
Hi Jennifer. Momentum p=e/c=hf/c.
This formula should be given in your textbook and bear in mind to remember it.
This formula should be given in your textbook and bear in mind to remember it.
However, you must also take note that because photons are absorbed by the surface, change in momentum = hf/c -0. Since there photons do not move after being absorbed.
Ask more if in doubt.
I have only learnt momentum =mass x velocity and the eqn for N2L tho
Got to bear in mind hf/c is for quantum physics.
360 Tutoring Program