Field Theory Answers

On the x axis there are point charges 3μC and 5μC located at the positions x=-2cm and x=3cm respectively. Find the direction and magnitude of the electric field at the origin.

A point charge of -10µC is located at x=-4cm. Find the magnitude and direction of the Electric field at the origin.

Two charges are on the x axis: A −16μC charge is at the origin and a 4μC charge is at x = 2cm. Find the magnitude and direction of the electric field at the point P, which is 3cm along the +x axis.

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?