Q1. An electric field of 220000 N/C points due west at a certain spot. What is the magnitude of the force that acts on a charge of -10C at the spot?
Q2. A beam contains 2.0 x10^8 doubly charged positive ions per cubic centimeter, all of which are moving north with a speed of 1.3 105 m/s.
Q3. A 3kg block sits at the top of a frictionless ramp that has the height of 5.4 meters. The weight of the block is 27.4 Newton's.
What is the initial gravitational potential energy of block?
What would be the block's kinetic energy at the bottom of ramp?
What would be the block's velocity at the bottom of ramp?