Do Now 02/20/14 1) A heat engine can do 450.5 Joules of work. If 25 Joules are lost to the environment, how much heat is added to the engine? Write this at the very top of your page, you will be creating your own C-Notes today. 4/29/2019

Do Now 02/20/14 1) A heat engine can do 450.5 Joules of work. If 25 Joules are lost to the environment, how much heat is added to the engine? 450.5 Joules – 25 Joules = 425.5 J added to engine. 4/29/2019

Divide your notes into 3 sections (notes, summary, questions) Electrostatics Notes Divide your notes into 3 sections (notes, summary, questions) 4/29/2019

Electricity Notes electricity: study of the invisible forces of electric charges 4/29/2019

Electrostatics Notes Electric charges come from tiny particles inside everything Protons are tiny particles with a positive charge Electrons are tiny particles with a negative charge 4/29/2019

Electrostatics Notes Two positive protons will repel (push away) Two negative electrons will repel (push away) A negative electron will attract a positive proton (pull closer together). 4/29/2019

GOLDEN RULE: Like charges repel (push away) and opposite charges attract (pull closer together) 4/29/2019

Like charges repel; opposite charges attract.

In your notes, complete the table Particles Electrostatic Force (write repel or attract) Two electrons Two protons Two neutrons One proton and one electron

How does the balloon work? The balloon is rubbed on the hair, and picks up electrons. The hair loses electrons. The balloon is __________ charged, and the hair is __________ charged. The two are attracted!! 4/29/2019

Positive vs. Negative charge When an object has more electrons than protons, we say it is negatively charged. When an object has less electrons than protons, we say it is positively charged.

Van Der Graaf Generator. Stop Here for our Demonstrations with the Van Der Graaf Generator. 4/29/2019