MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Department of Physics
Physics 8.01T
Fall Term 2004
Problem Set 8: Center of Mass, Momentum and Impulse: Solutions
Problem 1: Pre-Experiment 07 Concept Questions
a) Cart A is at rest on a straight horizontal track with
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Physics Department
8.044 Statistical Physics I
Spring Term 2004
Exam #1
Problem 1 (30 points) Doping a Semiconductor
p(x)2
0.2
02
l d
x2
When diusing impurities into a particular semiconductor the probability density
Question 1: Quick answers
[ 5 Points]
(a). (4 pts) Professor F. Ishy claims to have discovered a new force of magnitude F = A|r1 + r2 |
between protons, where r1 and r2 are the position vectors of the protons and A is a constant
that hes trying to get nam
Massachusetts Institute of Technology
Department of Physics
Physics 8.01L
SAMPLE EXAM 1
SOLUTIONS
September 26, 2005
Problem 1
a)
x=
1 2
1
At = A(2)2 = 2A
2
2
Vx = At = 2A
b)
8 seconds to run 100 2Am at speed 2A.
8(2A) = 100 2A 18A = 100 A =
100
18
x = 2A
Problem 2 (20 points) Lorentz-Force
The diagram below shows the trajectories of three charged
particles moving in a uniform magnetic field of strength B. The
field points into the plane of the paper. The particles are moving
in the plane of the paper. The
Problem 1
A sprinter running a 100 meter race starts at rest, accelerates at constant acceleration with
magnitude A for 2 seconds, and then runs at constant speed until the end.
a) Find the position (relative to the start position) and speed of the runner
Oct 29 No Class
Problem Set 8: Due Tues Nov 2 at 4:00 pm.
Nov 1
Hour One: Conservation Laws: Momentum and Collision Theory.
Reading: YF 8.3-8.6
Hour Two: Problem Solving Session 14: Conservation of Momentum
Reading: YF 8.3-8.6
Nov 3
Hour One: Experiment 7
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Department of Physics
Physics 8.01T
Fall Term 2004
Problem Set 7: Potential Energy, Change in Mechanical Energy Solutions
Problem 1: Gravitational Potential and Kinetic Energy
A satellite of mass m = 5.0 102 kg is ini
Problem 1: Gravitational Potential and Kinetic Energy
A satellite of mass m = 5.0 102 kg is initially in a circular orbit about the earth with a radius
r0 = 4.1 107 m and velocity v0 = 3.1 103 m s around the earth. Assume the earth has mass
me = 6.0 10 24
Massachusetts Institute of Technology
Spring Term 2005
8.02X Electricity and Magnetism
Practice Quiz #3b
Problem 1 (20 points) Lorentz-Force
The diagram below shows the trajectories of three charged
particles moving in a uniform magnetic field of strength