{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Phys.219_Lec.03_2012

# Phys.219_Lec.03_2012 - Lecture 3-1 Physics 219 Question 1...

This preview shows pages 1–5. Sign up to view the full content.

Lecture 3-1 Physics 219 – Question 1 – Jan.18.2012. Three point charges are arranged at the corners of a square as shown. What is the direction of the electric field at the remaining corner? (Take Q > 0.) a) toward the lower right b) toward the upper left c) upward d) to the right e) none of the above -Q Q Q

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Lecture 3-2 Formation of Water Molecules The chemical formula for water is: 2 HO O H H Water molecule is formed by ionic bond. That means the following: The single electrons from the two Hydrogen atoms transfer to the Oxygen atom. Oxygen becomes a doubly negative ion, the Hydrogen atoms turn into positive ions (protons). The Carbon and H ions attract each other and form a neutral molecule. The electron charges and the proton charges are slightly displaced from each other. C H H + + e e e pq d = + _ p G d O
Lecture 3-3 Electric Dipole An electric dipole consists of two separated point charges that have the same magnitude but opposite signs. The product of one of the magnitude of one of the charges and the distance between the charges is called the dipole moment . pd q = G G Many molecules such as H 2 O and HCl have permanent dipole moments and are called polar molecules. The dipole moment is a vector which points from the negative to the positive charge.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Lecture 3-4 Periodic Table of the Elements An atom is describe be 2 quantum numbers: n = 1, 2, 3…… l = n-1, n-2, …. .
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 20

Phys.219_Lec.03_2012 - Lecture 3-1 Physics 219 Question 1...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online