PHYS126 Quiz 7 13-5-2010
Time: 15min
Name:
1.
Student ID:
Use the information below to find the ground-state configuration of the following atoms: 5B,
11Na, 30Zn.
B: 1s22s22p1;
2
2
6
1
11Na: 1s 2s 2p
Balmer Series:
Quantization of Atomic
Energy Levels
Physics 127
Introduction to Modern
Physics Laboratory
Name: Li Pak Ho
Student ID: 08301735
Submission Date: 23rd, Feb, 2009
Introduction
Several exp
PHYS126 Quiz 3 11-3-2010
Time: 20min
Name:
Student ID:
1.
The rest energy of a certain nuclear particle is 8 GeV and its kinetic energy is 9GeV. Find its
momentum (in GeV/c) and speed (in c). (30 mark
i) Time dilation
Let event A and B in S frame are:
A: (0,0) B:(0, t)
Apply Lorentz Transform then we get event A and B in S frame:
Therefore, time dilation comes out
A:(0, 0) B: (-vt,t)
ii) Length con
PHYS126 Quiz 6 29-4-10
Time: 15mins
Name:
Student ID:
T
1. For 2p state (i.e. n = 2, l = 1), what is the magnitude of the angular momentum L?
What are the possible values of Lz ?
L = 1(1 + 1) = 2
L z
PHYS126 Quiz 5 Solution
1. (a)
h2 d 2
+ U = E
2
2m dx
For 0 < x < L, U = 0
h2 d 2
= E
2m dx 2
d 2
= k 2 ,
dx 2
2
where k =
2mE
(1 pt)
h2
General solution is
( x) = A cos kx + B sin kx , where A and
Solution to Quiz 1
(a) Along the water current, t1 =
L
L
2cL
+
=2
c + v c v c v2
(b) Across the water current, t 2 =
2L
c v2
2
2cL
2
t1
c
1
= c v =
=
= , so t1= t2
(c) t
2
2
2L
c v
v2
2
1 2
c2 v 2
c
2
PHYS126 Supplementary Notes 13
In this last tutorial note, we will focus on some typical examples of fermions and
bosons, Paulis exclusion principle, electron configuration and energies of elements in
PHYS126 Supplementary Notes 12
Principal Quantum Number:
n = 1, 2,3, K
Orbital Quantum Number:
l = 0,1, 2,K ( n 1)
Magnetic Quantum Number:
ml = 0, 1, 2,K l
(s, p, d, f)
The interpretation of l and ml
PHYS126 Supplementary Notes 8
A particle with mass m is confined inside in a rigid 1D box within a < x < a . At t = 0
, the particle initial wave function is 0 ( x) =
1
1
x
3 x
cos
cos
.
2a
2a
2a
PHYS126 Supplementary Notes 10
3D Rigid Box
In lecture 19, we have solved the time independent Schrdinger equation for the eigen
wave function and energy for the 2D rigid box by using separation of va
Photoelectric Effect
Physics 127
Introduction to Modern
Physics Laboratory
Name: Li Pak Ho
Student ID: 08301735
Submission Date: 23rd, Feb, 2009
Introduction
W
hen radiation of sufficiently short wave
O C T O B E R 9 , 2 0 17
WHY HE
ALWAYS
BOUNCES
BACK
BY ALEX ALTMAN
AND SEAN GREGORY
time.com
VOL. 190, NO. 14 | 2017
4 | Conversation
6 | For the Record
TheBrief
News from the U.S. and
around the worl
Introduction : earthquake of South Napa in 2014
Earthquake in South Napa occurred in the North San Francisco Bay Area on
2014 August 24 midnight. On the moment the earthquake magnitude is 6.0 and
have
Muscles: For a long time, human muscles were the only prime mover.
Animal muscles were next added, supplemented by wheels and sails.
modern ones
Steam engines: improved by James Watt in the 1780s, c
reduce the reliance
on fossil fuel
>prime mover
Electricity
Jet engine
Electricity
World Primary Energy Supply
Diesel
engine
Containership
Oil tanker
Electric
generator
Global energy consumption (1850
Physics 1003
Lecture 2
Mr. Gary Kalong Ng
[email protected]
Room 4469, ext 7528
Outline
Growth of energy consumption; Population growth;
Exponential growth and multiplication (Doubling);
Generation and use
Nuclear Physics:
Radioactive Decay and
Radiation Absorption
Physics 127
Introduction to Modern
Physics Laboratory
Name: Li Pak Ho (1B)
Student ID: 08301735
Submission Date: 27th Apr, 2009
Introduction
Electrical Conduction in
Solids
Physics 127
Introduction to Modern
Physics Laboratory
Name: Li Pak Ho (1B)
Student ID: 08301735
Submission Date: 6th Apr, 2009
Introduction
We all know that different m
Eigen State of an Operator
r
r
Eigen equation: A a (r ) = a a (r )
r
a (r ) : Eigen state/function of the operator A with an eigen value of a
a : Eigen value
Physical meaning/property of the eigen st
PHYS126 HW11 Solution
1. Given that
By separation of variable, put
, we can obtain:
Decouple the equation into
It is Time-independent Schrdinger equation (TISE) of 1D harmonic oscillator in direction
Lecture 18: The Schrdinger Equation in 1D
Shengwang Du, 08 April 2011
1. The Free Particle
In the free space, U ( x) = 0 , the time-independent Schrdinger equation is:
E E ( x) =
h2 d 2
E ( x)
2m dx
Lecture 19: The 2D Schrdinger Equation
(Shengwang Du, 11&13 April 2011)
1. 2D Schrdinger Equation
Time-dependant Schrdinger equation
ih ( x, y, t ) = H ( x, y, t )
t
1
2 2
ih ( x , y , t ) =
[ p x +