Recent content by AndrejN96

Homework Statement Suppose you're at a college campus. 3/4 of the people on the campus are students or professors from that college, and the rest 1/4 aren't. When asked a question, students and professors from that college will give you a correct answer every time, and those that aren't from...

Homework Statement Find the minimum uncertainty of the momentum of a small particle with mass m=1g, which is confined within a region of width a=1cm. Homework Equations Delta(p)*Delta(x)>=hbar/2 The Attempt at a Solution Delta(p)*Delta(x)=hbar/2 Delta(p)*10^(-2)=hbar/2 Delta(p)=10^2*hbar/2...

The voltage of the resistor? And if yes, what with it? EDIT: Will the voltage across the resistor in a resonant AC RLC circuit be equal to the voltage of the source?

Homework Statement Given a series RLC circuit, with one R, one L, and one C element, and an AC voltage source with variable frequency, find the resonant frequency experimentally given an ammeter and a voltmeter. Homework Equations The current in the circuit when the circuit is in resonance is...

Homework Statement Show that lim n->inf sin(n*alpha), 0 < alpha < pi, diverges. Homework Equations lim n-> inf sin(n) diverges The Attempt at a Solution I know how to solve this for a constant value of alpha (i.e pi/3), but am unaware of solving this one, where alpha may vary. I know that...

I would find the derivative of the function and find for which values of x the value is >0. Totally overlooked it. Thank you.

Member warned about not showing an attempt. 1. Homework Statement As the title says, I am supposed to find values for x for which the function given below grows. f(x)=(integral from -3 to x of t^4*e^(t^2)dt)+(integral from x^2 to 2 of t*e^tdt) Homework EquationsThe Attempt at a Solution I...

Homework Statement Find the coordinates of the vector of the height of the parallelogram formed by vectors a={1, 2, 1} and b={2, -1, 0} Homework Equations A=|axb|, A=|a|*h The Attempt at a Solution I can find the intensity of the vector h i.e the length of the height, but not its vector. I...

Appreciate it, a lot! :)

So is Is going to flow through R3 and Vc is going to be equal to E3-Is*R3, and I find E3 from there?

Homework Statement Find the resistance of resistor R7 when the switch is turned on so that the power of that resistor is maximum in the circuit. The voltage of the capacitor before the switch is turned on is Vc=200V. Homework Equations Thevenin's theorem The Attempt at a Solution I...

Homework Statement My question is: If we have a parallel plate capacitor with 2 parallel dielectrics both taking A/2 of the complete surface, is the total electric charge equal to sum of the electrical charges in the first dielectric and the second dielectric, i.e is qtotal=q1+q2=σ1*A/2+σ2*A/2...

Homework Statement Plot the graph of lnη vs 1/T for water (use values from table) and alcohol (values measured previously). For water: (Temperature in Kelvin) T=293.15 η=1.002mPas T=308.15 η=0.726mPas T=323.15 η=0.548mPas For alcohol (measured): T=293.15 η=3.202 T=308.15 η=1.254 T=323.15...

Yes, thanks, this was the confirmation that I needed. Cheers!

I just did some more research in literature I have on physics. It says the tension would be the same in all 3 places of the pulley system, because the rope and pulley are light enough to be disregarded.