Recent content by Queequeg

Homework Statement A mass is attached to a spring (on a wall) of constant 100 N/m. The mass is 1 kg. The mass has an initial position of 3 m from the equilibrium position and is given an initial velocity of 5 m/s. Find the period and amplitude of oscillations. Homework Equations [/B] Period...

Homework Statement A voltage source connected to a circuit produces a voltage V, current I and has internal resistance R. What is the new voltage if an identical voltage source is added to the original: a) in parallel b) in series Homework Equations V=IR[/B]The Attempt at a Solution a...

Homework Statement [/B] What is the number of major products of a reaction of trans-3,4-dimethyl-3-heptene and HCl?Homework Equations Once H adds, the chloride ion can attack the carbocation from the top or bottom. The Attempt at a Solution Once the carbocation forms, the carbon that forms...

I understand it when you have a mechanism and the tertiary carbocation is more stable than a secondary and primary carbocation, but is that the reason? Cis-isomers are less stable than trans isomers because of steric strain on that side of the double bond, but a tetrasubstituted alkene will have...

When determining the bond angle of an atom, is it not applicable if you have an atom bonded to only one other atom? such as for CO2, would you only be able to write the angle for C, 180 degrees, but not for oxygen despite the lone pairs?

My organic chemistry textbook says that ethers generally have higher boiling points than alkanes because of dipole-diole interactions, but why then does hexane have a higher boiling point than ethyl-propyl-ether? Is this principle then not true for larger alkanes with 5 or more carbons? Diethyl...

I saw a joke crib sheet for a physics class that said "F=ma, derive the rest," but is it actually possible to derive at least electricity and magnetism questions from Newton's second law?

Thanks, that's what I mean and I need to learn more about spacetime. So if that's true, why bother explaining that the traveling brother undergoes acceleration and that there are actually 3 reference frames because his velocity isn't constant? The spacetime continuum explanation seems much...

Hi, from what I understand about the twin paradox, Is the resolution essentially that since the traveling twin undergoes acceleration when the ship reverses direction, so since the velocity of the twin is no longer constant, the inertial reference frames are no longer valid? Then does that also...

Homework Statement In a circular region in the plane of paper, a magnetic field is directed out of the page and decreasing. What is the direction of the electric field at a point to the right of the region? Homework Equations Lenz's law The Attempt at a Solution Since the magnetic field is...

It was just a discussion question for a lab, thanks!

Hmm that would work and got me thinking, so besides an LC circuit could one also implement a rectifier diode for unidirectional current instead of the sinusoidal wave?

A coil in a magnetic field produces a sinusoidal emf output, so why can't you just attach a capacitor to it to charge it? Is it simply because capacitors store energy in electric fields, so you would need an inductor?

Doesn't the inner wire dissipate energy though, so the fraction supplied to the cable is just all of the power dissipated in the inner wire, using ##I^2 R##? Unless by "cable wire" that's the outer conductor in which case I see no power is dissipated. Thanks

Homework Statement A concentric wire of resistivity ##\rho##,length ##L## has an inner radius ##R_1## and outer radius ##R_2## and charge density ##\lambda##. A current ##I## flows down the inner wire while the outer conductor is grounded, ##V=0##. a) Calculate the potential difference...