Fisica 2

Pages: 3 (685 words) Published: June 2, 2011
Capitulo 24
The two plates of a capacitor hold +2800uC of charge, respectively, when the potential difference is 930V. What is the capacitance? [pic]
How much charge flows from a 12.0-V battery when it is connected to a 12.6 u-F capacitor? [pic]
An electric field of 4.80x10^5 V/m is desired between two parallel plates, each of area 21.0 cm2 and separated by 0.250cm of air. What charge must be on each plate? [pic]
How strong is the electric field between two parallel plates of a 0.80-uF air-gap capacitor if they are 2.0mm apart and each has a charge of 92uC? [pic]
2200V is applied to a 2800-pF capacitor. How much electric energy is stored? [pic]
How much energy is stored by the electric field between two square plates, 8.0cm on a side, separated by a 1.3-mm air gap? The charges on the plates are equal and opposite and of magnitude 320uC? [pic] The electric field between the plates of a paper-separated (k=3.75) capacitor is 9.21x10^4 V/m. The plates are 1.95mm apart and the charge on each plate is o.675uC. Determine the capacitance of this capacitor and the area of each plate. [pic]

Capitulo21

What is the magnitude of the electric force of attraction between an iron nucleus(q= +26e) and its innermost electron if the distance between them is 1.5x 10^-12m? [pic]
What is the magnitude of the force a +25uC charge exerts on a +2.5 mC charge 28cm away? [pic]
Particles of charge +75, +48, and -85uC are placed in a line. The center one is 0.35m from each of the others. Calculate the net force on each charge due to the other two.

[pic]
Three charged particles are placed at the corners of an equilateral triangle of side 1.20m. Yhe charges are +7.0uC, -8.0uC and -6.0uC. Calculate the magnitude and direction of the net force on each due to the other two. [pic]

A charge of 4.15mC is placed at each corner of a square 0.100m on a side. Determine the magnitude and direction of the force on each charge.[pic] [pic]
What are the magnitude and direction of the...

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