In the air over a particular region at an altitude of 500 m above the ground, the electric field is 120 N/C directed downward. At 600 m above the ground, the electric field is 100 N/C downward. What is the average volume charge density in the layer of air between these two elevations? Is it positive or negative?
Momentum- inertia in motion; product of the mass of an object and its velocity. Momentum = mv Impulse- driving, motivating force; product of the force acting on an object and the time during which it acts. Impulse = Ft ; Impulse = Change in Momentum: Ft = mv Impulse-Momentum Relationship- impulse is equal to the change in the momentum of the object that the impulse acts upon. Ft = mv Law of Conservation of Momentum- In the absence of an external force, momentum of a system remains unchanged. Momentum before an event involving only internal forces is equal to the momentum after an event. mv(before event) = mv(after event) Elastic Collision- collision in which objects rebound without lasting deformation or generation of heat. Inelastic Collision- collision in which objects become distor