Recent content by Jreyes613

Thank you guys. Yes , my TA said that you can use the Baker -Campbell-Hausdorff formula. I will be able to solve it now, thanks!

Homework Statement Hello! I'm having troubles with this proof. given two operators A &B , such that [A,B] = λ where λ is complex,and μ is also complex, show that exp{μ(A+B)} = exp{μA}exp{μB}exp{(-μ^2λ)/2} Homework Equations [A,B] = λ. [A,B] = AB-BA = λ The Attempt at a...

! thank z, me and my friend used I=Vo/(R+r) to solve for Vo, Vo=I(R+r) got two equations Vo=5.25(r) *since when R=0, I=5.25 Then i used another point Vo=1.5(2.5+r) and solved for Vo. With this, i was able to solve for my internal resistance to equal one. :) thank you gneill!

okay yes, ( i saw my bad re arranging in the equation) So I will end up with I=Vo/(R+r) I am still in the mist here... i am not sure how to calculate each individual resistor since i am not given their individual values.

okay, so it would still be I=Req(Vo) but instead i would just add the resistances without inversing them. Req= R+r right?

okay, so i have the equation I=V/R since the resistors are in parallel, (1/Req)=(1/R+1/r) take the inverse of both sides to get Req so i get I=Req(Vo) Is this right?

these were given to me! this is all the information given.

oops! i forgot to click attach on the second file. new here :)

Homework Statement A variable resistor, R, is connected to the terminals of a battery (dashed box in the diagram). The graph below shows data collected in the circuit as R is varied. What is V0, in volts? What is the internal resistance, r, in ohms? Homework Equations Ohm's Law The...