Enegy Definition and 12 Threads

i just finished some basic concepts about electricity and wanted to confirm if my deduction/understanding is correct: in a simple circuit of let's say a battery and lamp,motor,resistor, the difference between potential of two ends of battery(voltage) say how much potential energy per charge has...

Whether in vacuum inside a CRT, or in a metal, a potential difference has to be applied for free electrons to move from the negative to the positive terminal. However, the reality is that free electrons are still moving when no voltage is present at the 2 ends of a metal conductor. In this...

Homework Statement The force on a particle is directed along an x axis and given by F = F0(x/x0 - 1) where x is in meters and F is in Newtons. If F0 = 1.5 N and x0 = 4.9 m, find the work done by the force in moving the particle from x = 0 to x = 2x0 m. Homework Equations F = force, w = work, x...

Anyone know if the following statement is true (and why)? "Getting to higher ground would increase his gravitational potential energy, decreasing the effects of non-conservative forces, which would allow him to move easier." CLARIFICATION: "move easier" refers to a lack of friction and not the...

Lets say you have your basic fusion reaction D + H → He3 + γ + 5.49 MeV Now exactly how much of the energy is carried away by the gamma ray and how much by the Alfa particle ?

"KE=3/2nRT=3/2kT" is applicable to only monatomic gas or all kind of gas? What about " KE=1/2*fkT" ? (f: degree of freedom) Is it implies the same thing as "KE=3/2nRT=3/2kT" ? Thank you.

hello sir ...can anyone explain me the value of (U) at infinity with respect to Earth as reference point

Homework Statement What initial kinetic energy must an alpha particle have if it is to approach a stationary nickel nucleus to within a distance of 24.6 fm? Homework Equations not sure The Attempt at a Solution I'm not really sure how to connect the KE with the distance of the...

Homework Statement F=force, a=acceration, m=mass, U potential energy, P momentum, E=energy How do derive 2 and 3 from 1( see below). Homework Equations 1) F=ma, 2) E= (p^2)/(2m) + U, 3) ma = -del U The Attempt at a Solution I try to understand why U pop into the...

Hi, I did some calculations but somehow I feel it's not 100% correct. Could someone have a look please. Many Thanks "Task" A pile driver of mass mh has struck a pile of mass mp and driven the pile D meters into the ground, if the velocity of the strike is V, determine the force due to...

I was wondering if my thought on Zero Point Field was correct. First of all is it part of the material universe? Second, is it kind of like an ether or mediam through which things move through?

A proton (mass 1 u) moving at 7.80 x10^6m/s collides elastically and head-on with a second particle moving in the opposite direction at 2.40x10^6 m/s. After the collision, the proton is moving opposite to its initial direction at 6.60x10^6m/s. Find the mass and final velocity of the second...