Posted by **Max** on Friday, September 17, 2010 at 12:25am.

Two plates, each of area 3.40*10-4 m2, are used to construct a parallel-plate capacitor with capacitance 1.20 pF.

(a) Find the necessary separation distance.

d = ?m

(b) If the positive plate is to hold a charge of 4.70* 10-12 C, find the charge density.

σ = ?C/m2

(c) Find the electric field between the plates.

E = ?N/C

(d) What voltage battery should be attached to the plate to obtain the preceding results?

V = ?V

- Physics -
**drwls**, Friday, September 17, 2010 at 2:26am
For (a), find the formula for C in terms of epsilon, Area and plate separation. For (b), divide the charge by the area. For (c), use Gauss law and the charge density for the E field . For (d), use V = E*d

Show your work if you need further assistance.

- Physics -
**Anonymous**, Tuesday, August 30, 2011 at 11:32pm
In the figure here, a red car and a green car move toward each other in adjacent lanes and parallel to an x axis. At time t = 0, the red car is at xr = 0 and the green car is at xg = 223 m. If the red car has a constant velocity of 22.0 km/h, the cars pass each other at x = 44.7 m. On the other hand, if the red car has a constant velocity of 44.0 km/h, they pass each other at x = 76.6 m. What are (a) the initial velocity (in km/h) and (b) the (constant) acceleration (in m/s2) of the green car?

## Answer This Question

## Related Questions

- Physics - A parallel-plate capacitor is constructed from two circular metal ...
- Physics - A parallel-plate capacitor is constructed from two circular metal ...
- College Physics - A 12.0- A 12.0- A 12.0-V battery remains connected to a ...
- Physics - A parallel plate capacitor has a rectangular plates with length 5cm ...
- Physics - An air-filled parallel plate capacitor has a plate separation of b = ...
- Physics - A parallel plate air capacitor of capacitance 245pF has a charge of ...
- physics - The plates of a parallel plate capacitor each have an area of 0.40 m2 ...
- physics - An air-filled parallel plate capacitor has a plate separation of 0.6 ...
- Capacitance - A parallel plate capacitor with plates of area 320 cm.^2 is ...
- physics - An electron is released from rest at the negative plate of a parallel ...

More Related Questions