1. Two oxide ions (net charge of -2e) are fixed in place at a distance of 50.0 um away from each other. a. What is the magnitude and direction of the field at a point p between the ions, located 10 pm
from the ion on the left?
b. Find the force that would be exerted on an electron if it were to be placed at point P. (Be sure to
include the direction of the force.)
I

11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?

Awave travels at a speed of 5.2 m/s. if the distance between crests is 0.40 m, what is the frequency of the wave? use f=v/wavelength a. 13 hz b. 2.1 hz c. 0.077 hz d. 5.6 hz

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?