2010年6月29日 · F=\\frac{q1q2}{4\\pi\\epsilon_{0}} If epsilon 0 was defined as the proportionality constant for this equation, why was 4 pi not included in Eo? Why does there have to be a 4pi in the equation, instead of just having Eo equal its current value times 4pi?

2011年7月23日 · We can prove that E1-E0 is constant by solving the time-independent Schrodinger's equation for the energy eigenvalues at different potential values. If the energy difference between the first excited state and the ground state remains the same, then E1-E0 is constant. 4. What are the implications of a constant E1-E0? A constant E1-E0 implies ...

2010年7月8日 · The constant depends on the medium and we could write it as a straightforward constant(k) or ,what you are referring to,as 1/4pi*epsilon.The two constants are the same and in many problems it is easier to use the straightforward k but if we did there would be other problems where,because of spherical symmety,4 pi would appear in the final answer.Using the second …

2005年7月22日 · In summary, there is a constant that appears in Coulomb's Law, also known as the Coulomb constant or k. It is related to c^2 and has different values depending on the system of units used. The most commonly used units are the SI system, the Gaussian system, and the Heaviside-Lorentz system.

2011年8月27日 · What is k called? what is the name of this constant, and what is it equal to since I was told it was the electric constant and went about solving it with that value, but at the back in the answer section they used the value 9x10^9! Thanks guy! :D

2010年6月4日 · q: why we express coulomb constant constant in 1/(4*pi*epsilon0) form rather writing as a constant value 9*10^9 ? why we do not write the value directly as a gravitational constant why 1/(4*pi) came with the constant, we can directly write the exact value. whats the benefit of writing in this complex way..please help. i am looking for your help

2005年6月10日 · Planck constant, h, is a measured quantity, but hbar is not. According to NIST measured quantity h Planck constant: h = 6.6260693 x 10^-34 kg-m^2/s

2009年5月13日 · So the electrostatic constant k = 9*10^9, but I've also seen it written in my Fundamentals of Phys book (Resnick) and Wikipedia as k = 1/(4*pi*e0). Why is this? Thanks.

2015年6月17日 · Physics news on Phys.org Study demonstrates phase-tunable spin-wave-mediated mutual synchronization of spin Hall nano-oscillators; World's first scalable, connected, photonic quantum computer prototype developed; Physicists decipher structure of antimony melt, explain nature of observed structural anomalies

2013年6月10日 · It has the electric field and magnetic field intrinsic to light, which is related to coulomb's constant c = 1/√μ0εo The μ has the 4π factor. The reason for the difference in dimensions is because you chose to divide by ten million because it gave you the right number. It cancels out the 10^-7 in the magnetic permeation constant