Field Theory Answers

An object having a net charge of 20μC is placed in a uniform electric field of 1000N/C directed vertically. What is the mass of this object?

Two small conducting balls of identical mass m and charge q hang from non-conducting rope of length L Assume that Ɵ is very small tanƟ = sinƟ. Find an expression for the equilibrium separation x of the balls.

What must be the distance between point charge q1 = 20μC and point charge q2 = −40μCfor the electrostatic force between them to have a magnitude of 10N?

A point charge of 4µC is 10cm distant from a second point charge of −2 µC. Calculate the magnitude of the force on each charge.

Explain uncertainty principles.

1.   A square metal plate with a length of 0.20 m and with a charge of 9.7 x 10 ^-7 C. Find the electric field of the square metal plate. 

A 10kg box full of 1943 original Turtle Man comics falls from loading platform to a spring loaded platform 3 m below. Assume that there is no friction and that the spring can be modeled using Hooke's Law. Is the speed of the block at a minimum the instant the block strikes the spring? provide a calculation. If a 100kg box of Turtle Man action figures were placed on the spring platform, how much energy would be stored in the spring?

A 10kg box full of 1943 original Turtle Man comics falls from loading platform to a spring loaded platform 3 m below. Assume that there is no friction and that the spring can be modeled using Hooke's Law determine the speed of the block just before it hits the spring. Determine the spring constant if the mass compressed the spring 0.5 meters before coming to rest.

Two electrons have been removed from each atom.

Find the distance between two such atoms, if they

repel each other with a force of 8.8´10-9N, when placed

in free space.

Explain scattering.