1
PHYSICS 6
HOUR EXAM 1
SPRING 2003
NAME___________________________________________
This is a closed book, closed notes exam. You may use calculators.
Make sure you show all your work! You will get partial credit for correct intermediate steps.
Useful data and equations:
Avogadro's Number:
No
= 6.0 x 10
23
1 Mole (of substance with atomic mass number [or atomic weight] A)
= A grams, which contains
No
units
speed or velocity = v = distance/time or
v = d/t
acceleration = change of velocity over time =
∆
v /
∆
t
acceleration due to gravity = g = 9.8 m/s
2
d = (1/2)gt
2
Force = mass
×
acceleration
Work = force
×
distance
Power = Energy/time
Classical
Momentum = p = m u
(m = mass, u = velocity)
Classical
Kinetic Energy = 1/2 mv
2
Velocity of light: c = 3 x 10
8
meter/sec
Relativity relations:
Rest Energy = m
0
c
2
Units:
Mass: 1 Kilogram
Energy: 1 J(oule) = 1 Kg m
2
/ sec
2
;
1 electron Volt (eV) = 1.6x10
19
J
Power: 1 Watt = 1 J/s
Grades:
points
/possible points
I
/80
II
/40
(each part is 10 points)
III
/40
(each part is 10 points)
Total:
/160
time dilation: t
=
t
0
1
v
2
c
2
length contraction: L = L
0
1
v
2
c
2
velocity addition
u =
′
u +V
1+
V
′
u
c
2
momentum: p
=
m
0
u
1
u
2
c
2
energy: E =
m
0
c
2
1
u
2
c
2
=
K+m
0
c
2
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 Spring '06
 GaryR.Goldstein
 Physics, Energy, Work, Special Relativity, atomic mass number, average decay time

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