A 3.0-cm-diameter parallel-plate capacitor has a 2.0 mm spacing. The electric field strength inside the capacitor is 1.0×10^5 V/m.a. What is the potential difference across the capacitor?

What is the speed of a proton that has been accelerated through $2300\mathrm{V}$?

Point A is at $-25\mathrm{V}$ and point B is at $400\mathrm{V}$. A proton moves past point A at $3.5\times {10}^5\mathrm{m}/\mathrm{s}$, what is its speed when it reaches point B?

The water molecule is a permanent electric dipole with a dipole moment of $6.2\times {10}^{-30}\mathrm{C}\mathrm{m}$. A water molecule is aligned with an electric field of magnitude $7600\mathrm{V}/\mathrm{m}$. How much energy is required to rotate the molecule 180°?

A student wants to make a very small particle accelerator using a 9.0 V battery. What speed will (b) an electron have after being accelerated from rest through the 9.0 V potential difference?

A 3.0-cm-diameter parallel-plate capacitor has a 2.0 mm spacing. The electric field strength inside the capacitor is 1.0×10^5 V/m.b. How much charge is on each plate?

Two 2.00 cm×2.00 cm plates that form a parallel-plate capacitor are charged to ±0.708 nC. What are the electric field strength inside and the potential difference across the capacitor if the spacing between the plates is (a) 1.00 mm and

Two 2.0-cm-diameter disks spaced 2.0 mm apart form a parallel-plate capacitor. The electric field between the disks is 5.0×10^5 V/m.b. An electron is launched from the negative plate. It strikes the positive plate at a speed of 2.0×10^7 m/s. What was the electron's speed as it left the negative plate?

What is the escape speed of an electron launched from the surface of a 1.0-cm-diameter glass sphere that has been charged to 10 nC?