Physics 10 Class Notes
Spring 2008 Week 9
There is an mathematical equation for the electric and magnetic field of light which is called the wave equation. It was derived by the famous Scottish physicist James Clerk Maxwell. We won
What is now accepted as the picture of atomic physics and by extensionwhat reality is lies in Quantum theory. In the early 1900's several phenomena were observed such as the specta of atoms, the photoelectric effe
HW10_part2 Answers: Additional Problems: 1. One-way between-subjects ANOVA H0 : 1= 2= 3; H1: at least one pair of the means are different. =.05, Fcrit(2, 21)=3.47; Fobs(2, 21)=8.60; Reject the H0 Source SS df MS Factor A 4441.44 2 2220.72 Error 5419.
Motion of bodies Kinematics
description of the motion in terms of position, velocity and acceleration
Mechanics description of the motion in terms of
physical laws, Newtons laws
What is velocity?
position as a function o
Remember the difference between weight and mass?
An anvil will be weightless in space because there is no gravity. But it still has mass, so it would be hard to shake.
Something with a large mass requires a large force to make it accele
The is the force which you times the distance
Work lifting a mass m to a height h
Pushing a block twice as far takes twice as much work.
Energy: the capacity to do work. There are at least two forms of mechanical energy w
Elastic deformation: another form of potential energy
A classic example of elastic deformation is given by springs:
When the force is removed, they return to their original shape, length.
The spring must exert an upward forc
R is the distance from the surface to the center (star, earth, sun, etc)
Going away from the earth, or sun, planet,.
Throw a ball upwards
Velocity needed to reach a height h0 If v0>v0,cri
Problem Set # 1:
2.13 (hint: first express the maximum displacement as an integral over time, then as an
integral over velocity)
2.38 (hint: in NII express the derivative of velocity with time as a d