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Physics Spring Final

QuestionAnswer
The reason a charged balloon will stick to a wall is that induced opposite charges in the wall are closer than other wall charges.
A positive ion has more protons than electrons
Particle A has twice as much charge as particle B. Compared to the force on particle A, the force on particle B is the same
Bring a charged object near a conductor and then momentarily touch the conductor. This demonstrates charge by induction
The electric field inside an uncharged metal ball is zero. If the ball gains a negative charge, the electric field inside the ball will be zero
Much electronic equipment contains transistors and diodes that are made from semiconductors. Semiconductors can be very good insulators, can conduct electricity and contain helpful impurities
The fundamental force underlying all chemical reactions is Electrical
To be safe in the unlikely case of a lightning strike, it is best to be inside a building framed with steel
Two charged particles held close to each other are released. As they move, the force on each particle increases. Therefore, the particles have opposite signs
Two charges are separated by a certain distance. If the magnitude of each charge is doubled, the force on each charge is quadrupled
A volt is a unit of electric potential
Every proton in the universe is surrounded by its own gravitational field and electric field
After you rub a balloon on your hair, the balloon will likely be charged to several thousand volts
Electrical potential energy is the energy a charged object has because of its location
Coulomb's law says that the force between any two charges depends inversely on the square of the distance between the charges
Two charged particles held near each other are released. As they move, the acceleration of each decreases. Therefore, the particles have the same sign
Created by: Cinda
 

 



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