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... the engine in action: You can see that the slide valve is in charge of letting the high-pressure steam into either side of the cylinder. The control...

1. Charge of proton, Q = 1.6 X 10^-19... ratio is independent of the distance between them. 2...85 X 10^-12) Required charge , q = -1.03 X 10^-4 C (negative...

... unit is Ampere。An ampere is one coulomb of charge going past one point in the duration of one second。 C. Voltage (electrical potential difference...

(a) 圓環取一小段視為點電荷，其電量為ρdl 在套用點電荷的電場公式(q/4πεR^2) dE= ρdl /4πεR^2 在(0,0,h)的電場平行於xy平面的部份會被消掉， 只剩下z方向的部份 dEz=(ρdl /4πεR^2) sinθ θ為 r與圓環半徑b的夾角...

...potential energy--- 位能 (電位差) charge -field system--- 電場particle--- 粒子因此,The charge in potential energy of the charge -field system when the test particle is moved between the ...

...1.80 mm thick, with a dielectric constant of k=3.60. The resultant electric field in the dielectric is E = 1.20×10^6 volts/m 1.Compute the magnitude of the charge per unit area σ on the conducting plate.σ = E/4πk= 1.2*10^6/4π...

A帶正電，移走電子後正電量增加將電子一道B上，負電量增加設移動的電量為q原來的吸力為F = k*Q1*Q2/r^2= 9*10^9 *(1*10^-6) (1*10^-6) / (0.02^2) = 22.5 (N)移動電子後F’ = 9*10^9 *(1*10^-6 + q) (1*10^-6 + q) / (0.02^2) = 45 (N)兩式相除(1*10^-6)^2 / (1*10^-6 + q...

1. 設有x μC的電子從A轉移至B，則A帶電量(1+x) μC，B帶電量 -(1+x) μC， AB間作用力F=kQq/r^2=9*10^9(1+x)^2*10^-12/0.02^2=45→ x=√2-1 1 mole電子帶電量96500 coul→ (√2-1)μC=(0.414*10^-6/96500)*6.02*10^23=2.6...