Reference no: EM132582685

Part 1. A 78kg spherical boulder is sitting 1.5m from a 37kg spherical rock.

1. What is the gravitational force between the boulder and the rock?

2. What is the gravitational field strength in a location 1.25m away from the 78kg boulder (ignore the effects of the rock)?

3. How far from the surface of the Earth would an astronaut need to travel to reach a location where the gravitational field strength is 8.0N/kg?

Part 2.

Charge 1 is a 2.0 x 10-6C point charge and is located on an x-axis at location 0.0. Charge 2 is 5.0 x 10-6C and is located on that same x-axis at 20.cm. Charge 3 is -7.0 x 10-6C, and it is located at 60.cm.

1. Determine the force that charge 2 exerts on charge 1 (neglect the effect of charge 3).

2. Determine the net force acting on charge 2 from all the other charges.

3. Determine the electric field that charge 2 creates at the location of 80cm (neglect the effects of charge 1 and charge 3).

4. Determine the electric potential that charge 2 creates at the location of 80cm (neglect the effects of charge 1 and charge 3).

5. Determine the total electric field at 80cm.

Part 3

Two horizontal plates are positioned so that the top plate is negative and the bottom plate is positively charged. The voltage gain from moving from the top plate to the bottom plate is 60.0V, and there is a plate separation of 15cm.

1. Determine the electric field between two horizontal plates

2 What change in kinetic energy will an electron experience if it moves from a position right beside the top plate to a position right beside the bottom (positive) plate (ignore the effects of gravity).

3. If an electron at rest were accelerated from the negative plate to the positive plate, what speed with the electron end up with?