Recent content by mikee

Because S = Integral(Ti to Tf) (Cv / T) dT, and Cv is not dependant on temperature for the problem so integral 1/T T = Ln(Tf/Ti).. and then i just plugged in the values.

Homework Statement In order to take a warm bath, you mix 50 liters of hot water at 55 degrees Celsius with 25 liters of cold water at 10 degrees Celsius, How much new entropy have you created by mixing the water Homework Equations S = Integral(Ti to Tf) (Cv / T) dT The Attempt...

Yes the second image is applicable. Where T and H are the parallel conductors where the current will run to make them repel each other. And I am not exactly sure why the AC component would help? I would think because it oscillates back and forth it would be harder to filter the noise out?

Ok i didnt mean to insult anyone, i just thought anyone who could answer the question would be familiar with the experiment and disregard that comment. Anyways In this experiment we used a current balance in which the upper conductor is free to pivot on knife edges. The upper conductor is...

Homework Statement Hello i just have an interesting question, and was wondering if my answer to it had any validity. Ok so i did an experiment The Current balance experiment(for everyone not familiar with it, you can google it and get all the info you want) to try and estimate mu naught...

[b]1. Homework Statement [/b ]http://teacher.pas.rochester.edu/phy121/PracticeExams/FinalExam/FinalExam_files/image015.jpg This is not the exact picture, instead of having M1 there let end of the string be connected to the ground instead Find the tensions and accelerations Homework...

Homework Statement Hello i am just studying for an exam coming up and, i am looking at complex atwood machines, I am not really familiar(or understand fully) the conservation of string, if anyone knows a place where i can learn a little bit more about it that would be apreciated, thank you...

Homework Statement Find all solutions in Z12 to the equation X^2=4 Homework Equations The Attempt at a Solution This is my attempt, since it is in Z12, i wrote X^2=4(modulo 12) and by this the answers are trivial, X= 2, 4,8,... and also -2,-4... this just seems to easy so i...

The definition i learned was that singular means non invertable

Ok so if you Multiply both sides by Ainverse you would get AinverseAC=Ainverse0, which equals IC=0 which is C=0 and since C is not 0 this is a contradiction and therefore proves A is singular?

Homework Statement Let A be an nxn matrix. If A is row equivalent to a matrix B and there is a non-zero column matrix C such that BC=0, prove that A is singular Homework Equations The Attempt at a SolutionIm not quite sure but since B and A are row equivalent than there reduced...

Homework Statement An electron is oriented between two charged plates (oriented vertically). The electron experiences a constant force perpendicular to the plates. It has a mass of 9.0 x 10^-31 kg, is moving vertically with a velocity of 2.0 x 10^6m/s and enters the region between the two...

haha ok i think I've got it i can just use the equations for the projections and if the right side equals the left side viola ha thanks

Homework Statement How would i go about solving Proju(Proju(v))=Proju(v) Just a note Proju(v) means the projection of v onto you Homework Equations The Attempt at a Solution how would i go about solving this is mathematical terms, it is obvious when you do it...

Projectile Motion down an Inclined plane Homework Statement K just one quick question if an object is shot down an inclined plane at 10m/s horizontally at 30 degrees, if i put the x-axis to be the inclined plane and the y-axis and be perpendicular to the incline plane, would x(t) = 10cos30t and...