Recent content by Sarah00

Homework Statement Homework EquationsThe Attempt at a Solution My Solution: My Friend Solution: Are we both right? If not, who is right? and what is the mistake in other's solution! Thanks![/B]

I mean how to write it in a concise and academic way?

If I was right, the graphs are not isomorphic.. but how to prove that in a nice way!

I tried that and this is what I got: a=7 b=2 f=5 d=4 g=6 so what is left is c and e, I tried once mapping c to 1 and it was wrong (by matrices) so I tried it c with 3 and it was wrong as well !

Thanks for your reply. What I did is I wrote the degree above each vertex. Then I form a path going to all vertices. After that, I try to map it with the other graph. However, this was challenging. 4 vertices have degree 4 2 vertices degree 3 I tried all possibilities to prove it is isomorphic...

Homework Statement Are the 2 graphs isomorphic? Homework EquationsThe Attempt at a Solution Both have same vertices, edges, set of degrees. But I failed to prove isomorphism by adjacency matrices.

Thanks. "until the pressure difference stops the reverse flow" can you explain how? by reminding me with the physics principle or something like that

I don't think my question was very clear.. The picture was about chest tube. Which has different types. The pic in previous post is called 3-chamber.. there is another thing which is single-chamber: which is in figure A: This is pretty easy .. like if I have a cup filled with water and a...

Homework Statement Hi, I'm a junior doctor. It's been so long since I had physics! I've question about tube that's placed in chest cavity to drain air/fluid/etc. The second bottle, is under-water seal bottle. I know that its purpose is to prevent air moving TO the patient. but how? The "trap...

This is the book's answer:

Further to my previous post ..

Hi! If I have a sequence that its first 4 terms are: 30, -31, +32, -32 The pattern is geometric sequence but has alternating signs.. How can I find its sum .. I know it is composed of 2 sequences .. However, when I try to separate the 2 sequences .. I get them of different "lengths" In...

Homework Statement Homework Equations Net Torque = Moment of Inertia * Angular Acceleration Net Force = Mass * Acceleration The Attempt at a Solution I first applied the first formula on the pulley, I found out that Tension Force = Acceleration Then, I used Newton's second law on m1 which...

Homework Statement 2. Homework Equations Net Force = 0 Net Torque = 0 The Attempt at a Solution I know how to deal with these problems. My question is: What the word 'minimum' means here? A zero normal force over the second support point?

Thanks!