hmm so far..
m= mass of box and M=mass of cart. I assume the acceleration of the box and cart is the same.
F(box)=force(friction)=umg=ma
ug=a
F(cart)=force done by you=Ma
Substitute ug=a into the equation.
u*g*M=Force so mass of the box doesn't matter?
Homework Statement
http://www.screencast.com/users/trinhn812/folders/Jing/media/d77fab7d-ece6-4c9c-be65-bf41f94770fd
Homework Equations
I got the right answers doing the work shown, but I don't understand the logic of how I solved question 4.
The Attempt at a Solution
Homework Statement
http://www.screencast.com/users/trinhn812/folders/Jing/media/9582a1aa-b21a-4e50-8774-b60866a7d666
Homework Equations
lambda=h/p
The Attempt at a Solution
So I got 4.04E-12 m but the book says the answer is 3.23pm
I'm not sure where I'm wrong
Homework Statement
http://www.screencast.com/users/trinhn812/folders/Jing/media/23298f1b-2ef4-4cdf-8b7a-58c9be07335a
Homework Equations
E=hf
The Attempt at a Solution
I'm not even sure how to get the distance for this problem.
Homework Statement
http://www.screencast.com/users/trinhn812/folders/Jing/media/6596c399-feb6-49cf-82a7-d6d16c2a88e8
Question 17
Homework Equations
So I solved this problem using kinematics and would like to learn how to solve it use conservation of energy. I can't seem to get the right...
http://www.screencast.com/users/trinhn812/folders/Jing/media/07c73e88-45a9-4703-91e1-237b20135d2c
I'm not sure why the answer is A. I tried reasoning myself that it has to do with the critical angle, but I can't seem to convince myself.
I'm still a bit confused as to why the dot like patterns are horizontal. What is the black dot? Is that suppose to indicate a circular single slit?
In the following picture, I'm confused as to how the picture on the left translate to the one on the right. As the diffraction pattern on the left...
I'm just having a horrendous time trying to figure this problem out. My geometry is really lacking.
http://www.screencast.com/users/trinhn812/folders/Jing/media/64c9342a-985a-4bb2-9e29- [Broken]
98b5b5ebb1ad
I believe so. The wavelets due to huygen's principle can still propagate at the edges of the hair. Do the wavelets propagate horizontally around the vertical hair? It just confuses because single slit oriented vertically produce vertical patterns. But hair doesn't and I am told it acts similar...