Physics Study Guide Chapter 22 Electrostatics

Physics Unit 22 Study Guide

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What is electrostatics?
It is Electricity at rest
What are the two differences between gravity and electrical force?
1. Electrical force can repel and attract, gravity can only attract.2. Electrical force is more powerful then gravity.
What do same charges do? What do different charges do?
Same charges repel each other, different charges attract each other.
What is the charge in a hydrogen molecule?How many protons and electrons are there?
At the begging there are 1 electron and 1 proton but then it looses its electron so 1 proton is left. The charge is positive.
What is the conservation of energy?
It is that no energy is created or destroyed out of nothing, but it can rearage.
What is the formation of a molecule?
It is the nucleous contains neutrons and protons and the electrons surrand the nucleous.
How does a balloon stick to the wall?
Polarization, it is when there is slightly more electrons then protons or slightly more protons then electrons, the electrons are repealed beacuse the balloon is negative, the protons are closer to the balloon and the charges atrract each other.
What does a good conductor have to do?Examples?
They have to loosly hold their electrons. Example metal
What makes a bad conductor?Example
It holds their electron very tightly, rubber or glass.
What is grounding?
It is when all the electrons travel to the ground beacuse they are all repleing each other so they have more room when they go into the ground.
What is an ion?
An ion is when it looses or gains electrons.
What is the charge after you give away a proton?
The charge will not change beacue it is impossibe to give or take protons, they do not change the charge electrons do.
What is the oppisite of a conductor?Examples?
An insulator it hold it electrons tightly and is not a very good conductor. Like glass and rubber
What is more safer when lightning stricks, a metal building, a glass building, or a wood building?
The building that is safest is the metal building beaucuse it is a good conductor, it would conduct all the lighting on the outside of the building not the inside so you are safe, then the lighting would travel towards the ground.
What makes you hair stand up?
Your hair stands up beaucuse electrons are traveling through you hair and they are all repeling each other.