Reference no: EM132582870

Part 1.

Two identical particles with a mass of 2.23x 10-27kg have a charge 4.5 x 10-5C, andare positioned 0.500m apart. They are released so that they can move freely relative to each other.

1. Calculate their electrical potential energy at the moment they are released.

2. Calculate the speed of one of the particles after the particles have separated to 2.00m apart.

3. Calculate the speed of one of the particles after they have moved an infinite distance away from each other.

Part 2.

An electron with a horizontal speed of 3.3 x 106m/s and no vertical component of velocity passes through two horizontal parallel plates, as shown in the diagram below. The magnitude of the electric field between the plates is 180 N/C. The plates are 7.5cm long.

4. Calculate the vertical component of the electron after it leaves the plates.

5. Calculate the final velocity of the electron.

Part 3.

1. An oil droplet is sprayed into a uniform electric field of adjustable magnitude. The 0.04g droplet hovers motionless (gravity force equaling electrostatic force) when the electric field is set to 370N/C and directed downward.

-Determine the sign and magnitude of the charge on the oil droplet.

-Determine the approximate number of excess electrons that are on the oil droplet.