A particle of charge q and mass m moves in the uniform fields E u = E0 k n and B u = B0 k n. At t = 0, the particle has velocity v u 0 = v0ni. What is the particles speed at a later time t?
Dr. Ilia Gogoladze Physics by Walker, 4 edition Force - A push and pull - Forces are what cause any change in the velocity of an object Classes of Forces - Contact forces o Involve physical contact between two objects - Field forces o Act through empty space. o No physical contact is required Fundamental Forces - Gravitational force o Between objects - Electromagnetic forces o Between electric charges - Strong force o Between subatomic particles (quarks, gluons) - Weak forces o Between subatomic particles Forces - A spring can be used to calibrate the magnitude of a force. - Doubling the force causes double the reading on the spring