[ 1] The gravitational field of a star causes light to bend, so the star behaves very much
like
[A] a diverging lens.
[B] a converging lens.
[C] a prism.
[D] A star does not cause light to bend.
[ 2] The image distance of a meniscus convex lens for an obj
55.
A beam of neutrons with a de Broglie wavelength of 0.250 nm diffracts from a crystal of table salt,
which has an interionic spacing of 0.282 nm. (a) What is the speed of the neutrons? (b) What is the
angle of the second interference maximum?
h
p
h
=
m
PHYS 2211L
LAB 2
The Force Table
Purpose
In this laboratory we will investigate the vector nature of forces. We will also investigate
what happens when two or more forces are applied to the same object. That is, we will
determine the net force exerted whe
FG =mgsin
F N =mgcos
A B=|AB|cos
A B=| AB|sin
Constant Acceleration
2
x=v o t +1/2 a t
x=1/2 ( v v o ) t
v =v o +at
v 2=v 2o +2 a x
Work, Power, Energy
1
KE= m v 2
2
PE=mgh
KE + PE =KE f + PE f
W =Fd cos
W = PE KE
W
P=
t
P=Fv cos
Elastic Potential
Constants
2
1
9 Nm
k=
=910
4 E
C2
C2
E=8.851012
N m2
19
e= 1.60210 C
27
m proton=1.67210 kg
31
melectron=9.110 kg
Force Generated from two charges
k|q1 q2|
F=
N Coulom b' s Law
2
r
Force of Electric Field on Charge
F=qE
Electric Potential due to point cha