Studio PHY-2053C Fall 2017: Lab 2
Purpose:
Part A:
The purpose of this experiment is to determine how resistive forces and terminal velocity
vary with the mass of a falling object.
Part B:
The purpose
Christine Wright
Physics Homework
9/28/17
Position vs. Time
40
35
30
25
Position (microns) 20
15
10
5
0
0
5
10
15
20
25
30
35
60
70
Time (seconds)
Average velocity = 0.85 microns/s
Speed vs. Time
3.5
Two atoms collide while moving in a dilute gas. The larger atom has a mass M 1 = 6 Daltons
and a speed v1 = 200 m/s, while the smaller has a mass M2 = 1 Daltons. During the collision
both atoms simply
Nicole Hansen
September 12, 2017
PHY1020
Chapter 1 Essay Assignment
Part A
1.)
The federal government has made a huge improvement in the technology for forecasting
storms due to an $83.5 million inves
The Fischer-Tropsch process is used to produce fuel by converting a mix of
carbon monoxide and hydrogen into liquid hydrocarbons through a set of chemical
reactions. The reason it is important to be a
Physics 2010
Fall 2009
Sid Rudolph
MIDTERM 4 REVIEW
Problems marked with an asterisk (*) are for the final. Solutions are on the course web page.
1.
A.
The drawing to the right shows glass tubing, a r
Cameron Canton,
Demi White,
Claudia Gonzalez
Pendulum Lab
Procedures:
Effect of Amplitude
1. Length of string and mass remain constant
2. Decide on 3 different amplitudes using protractor
3. Measure
Problem:
The neutrons in a parallel beam, each having kinetic energy 1/40 eV, are directed through
two slits 0.50 mm apart. How far apart will the interference peaks be on a screen 1.0 m
away?
Solutio
Problem:
An electron and a 140-g baseball are each traveling 150 m/s measured to an accuracy of
0.055%. Calculate and compare the uncertainty in position of each.
Solution:
Lets first calculate the ab
Problem:
What is the energy of photons (in eV) emitted by a 102.1-MHz FM radio station?
Solution:
The energy of a photon is given by its wavelength (or frequency):
E = hf = 6.626 1034 Js 102.1 106 Hz
Problem:
Barium has a work function of 2.48 eV. What is the maximum kinetic energy of electrons
if the metal is illuminated by light of wavelength 390 nm? What is their speed?
Solution:
The maximum KE
Problem:
How much total kinetic energy will an electron-positron pair have if produced by a 2.54MeV photon?
Solution:
The photon has to provide the energy to create the electron-positron pair, and the
Problem:
How hot is a metal being welded if it radiates most strongly at 410 nm?
Solution:
Using Wiens law
pT = 2.90 103 mK , we can find the temperature of
the weld, since p = 410 nm.
410 109 m T =
Problem:
About 0.1 eV is required to break a hydrogen bond in a protein molecule. What are the
minimum frequency and maximum wavelength of a photon that can accomplish this?
Solution:
E = 0.1 eV is th
Problem:
What is the energy range in eV, of photons in the visible spectrum, of wavelength 400 nm
to 700 nm?
Solution:
The energy of a photon is given by its wavelength (or frequency):
E = hf =
hc
To
1A. A Physics Professor decides to do the photoelectric effect experiment with hydrogen gas. At room
temperature, almost all the hydrogen atoms are in the ground (n = 1) state.
a) What is the work fun
1A. One of your professors has a near point of 14 cm and a far point of 21 cm. Assume a lens-eye
distance of 1.6 cm.
a) What should be the prescription (power of lens) for the glasses so that he can s
LAB 01 Equipotentials and Electric Fields
Vincent Mulvaney
August 31st, 2016
PHY2049L Wednesday at 2:30 pm
Lab Station E
Partner: Daniel Belc
Abstract
The answer is no. Our measured values for the ele
PHY 5667 : Quantum Field Theory A, Fall 2015
September 3rd , 2015
Assignment # 2
(due Thursday September 10th , 2015)
1. Let us write the infinitesimal form of a Lorentz transformation in the vector r
PHY 5667 : Quantum Field Theory A, Fall 2015
October 8th , 2015
Assignment # 5
(due Thursday October 22nd , 2015)
1. Consider the action of parity (P ), time-reversal (T ), and charge-conjugation oper
PHY 5667 : Quantum Field Theory A, Fall 2015
Assignment # 1, Solutions
1. The Lagrangian for a relativistic free particle is:
Lrel = mc2 1 ,
(1)
where 1 = 1 2 , = v/c, v is the particle velocity, m is
PHY 5667 : Quantum Field Theory A, Fall 2015
Assignment # 5, Solutions
Problem 2
The time-ordered product of fermion fields is defined as
T (x)(y)
= (x)(y)(x
0 y0 ) (y)(x)(y0 x0 ) .
Writing the field
PHY 5667 : Quantum Field Theory A, Fall 2015
Assignment # 2, Solutions
Problem 1
The Lorentz transformation corresponding to an infinitesimal rotation by an angle about
the x axis can be written as,
PHY 5667 : Quantum Field Theory A, Fall 2015
August 27th , 2015
Assignment # 1
(due Thursday September 3rd , 2015)
1. Write down the Lagrangian of a relativistic free particle and show that, in the li
PHY 5667 : Quantum Field Theory A, Fall 2015
November 24th , 2015
Final Exam
(due by Friday December 11th , 2015)
1. Show explicitly that at one loop in QED:
1.a) the three-photon vertex is zero;
1.b)