seidi.yamauti
 Name:
 Seidi Yonamine
 School:
 USP
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0 
Questions Asked

seidi.yamauti:
Group Title
Hi, folks.
I need help with a whole question here:…
 updated one month ago
 32 replies
 4 Medals
Mathematics

seidi.yamauti:
Group Title
There are 3 metals A,B and C. Read a) and b), and arrange A,B and C in order of decreasing ionization tendency.
a) A dissolves in dilute …
 updated one month ago
 No Medals Yet
Mathematics

seidi.yamauti:
Group Title
A mixed gas of 4.0L composed of gas A (molecular weight 4.0) and gas B (m.w 20) at 0ºC ant 1atm pressure has a mass of 3.0g. What is the m…
 updated one month ago
 1 reply
 No Medals Yet
Mathematics

seidi.yamauti:
Group Title
In the solid state, which of the following substances (1 to 5) forms a molecular crystal?
1. sodium cloride
2. carbon dioxide
…
 updated one month ago
 1 reply
 No Medals Yet
Mathematics

seidi.yamauti:
Group Title
Hi, folks.
I'm applying to a scolarship in Japan and there is a chemistry test to do (among others), but i don't remember most of the sub…
 updated one month ago
 No Medals Yet
Mathematics

seidi.yamauti:
Group Title
You have 100 marbles numbered 0 to 99 in a bag. You repeatedly draw a marble from the bag (all marbles being equiprobable), note its number,…
 updated 7 months ago
 No Medals Yet
Mathematics

seidi.yamauti:
Group Title
http://www.feynmanlectures.info/exercises/atwood.html
Why can't i substitute the masses by an unique mass m, and just make F=mg? This way…
 updated 7 months ago
 2 replies
 No Medals Yet
Mathematics

seidi.yamauti:
Group Title
I'm so lost at this one, i'm feeling dumb. Can someone help me?
http://www.feynmanlectures.info/exercises/atwood.html…
 updated 7 months ago
 No Medals Yet
Mathematics

seidi.yamauti:
Group Title
A ball with mass m and velocity v hits a wall, and suffers an elastic colision. So it comes back vith velocity v (1 dimension motion).
…
 updated one year ago
 7 replies
 2 Medals
Mathematics

seidi.yamauti:
Group Title
I wrote it in MIT's 8.01[OCW  Physics] subject, but seems that there are not much movement..
At the end of lecture 12, Prof. Walter Lewi…
 updated one year ago
 6 replies
 No Medals Yet
Mathematics

seidi.yamauti:
Group Title
At the end of lecture 12, Prof. Walter Lewin asks if the time for an object that is launched from ground zero with an angle != 0 to reach th…
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

seidi.yamauti:
Group Title
So what about wide tires?
 updated one year ago
 No Medals Yet
Mathematics

seidi.yamauti:
Group Title
Do you know some good sites for selfstudying?
Other than Open Study and OCW, edx..., is there some place that you actually find organize…
 updated one year ago
 5 replies
 2 Medals
Mathematics

seidi.yamauti:
Group Title
An object with mass m1=4.00kg and a box with mass m2=5.00kg are attached by a wire (massless) that pass trough a sheave (negligible mass too…
 updated one year ago
 17 replies
 1 Medal
Mathematics

seidi.yamauti:
Group Title
Solve the wave equation [if someone can post the wave equation] by the separation of variables method (y(x,t)=X(x)T(t)) for the case of both…
 updated one year ago
 12 replies
 1 Medal
Mathematics

seidi.yamauti:
Group Title
[linear algebra] <(x1,x2),(y1,y2)> = x1y1 + tx2y2
For which valor of t, it is an in internal (scalar) product?
 updated 2 years ago
 12 replies
 No Medals Yet
Mathematics

seidi.yamauti:
Group Title
An undamped oscillator of mass m and natural frequency Wo moves under the action of an external force F=Fo sin(wt). Starting from the equili…
 updated 2 years ago
 8 replies
 1 Medal
Mathematics

seidi.yamauti:
Group Title
An undated oscillator of mass m and natural frequency Wo moves under the action of an external force F=Fo sen(wt)! Starting from the equilib…
 updated 2 years ago
 11 replies
 No Medals Yet
Mathematics

seidi.yamauti:
Group Title
What is the maximun of f(x)=3cosx+2sinx ?
Whithout using derivatives
 updated 2 years ago
 26 replies
 8 Medals
Mathematics

seidi.yamauti:
Group Title
A little platform oscile with a frequency of 4hz and an amplitude of 7 cm, attached to a vertical spring. A small object is poised on the to…
 updated 2 years ago
 7 replies
 No Medals Yet
Mathematics

seidi.yamauti:
Group Title
It's been on the web since a while
48÷2(9+3)=?
…
 updated 2 years ago
 22 replies
 4 Medals
Mathematics

seidi.yamauti:
Group Title
There's a problem in Halliday I  chapter 1
In my book it's question 19 (but it's a brasillian version). I'll try to translate it from por…
 updated 2 years ago
 7 replies
 3 Medals
Mathematics