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Our Universe
Coursework 8
Due in on Wednesday of week 10 at 16:00
Useful information
Boltzmanns constant k = 1.38 1023 J K1
Mass of hydrogen atom mH = 1.67 1027 kg
Gravitational constant G = 6.67 1011
Our Universe
Coursework 6
Due in on Wednesday of week 8 at 16:00
Exercise class question - not to be handed in
The purpose of this question is to illustrate the fact that the tidal acceleration exerte
Our Universe
Coursework 4
Due in on Wednesday of week 5 at 16:00
Useful Information
Gravitational constant G = 6.67 1011 N m2 / kg2
Solar mass 1.98 1030 kg
Exercise class question - not to be handed
Our Universe
Coursework 7
Due in on Wednesday of week 9 at 16:00
Useful information
Boltzmanns constant k = 1.38 1023 J K1
Plancks constant h = 6.63 1034 m2 kg s1
Mass of hydrogen molecule mH2 = 3.34
Our Universe
Coursework 5
Due in on Wednesday of week 6 at 16:00
Exercise class question - not to be handed in
The Earth spins on its axis once every 24 hours, and the Moon orbits the Earth once every
Our Universe
Coursework 9
Not to be handed in - practice questions from weeks 11 and 12 of the lecture course
Useful information
Boltzmanns constant k = 1.38 1023 J K1
Mass of hydrogen atom mH = 1.67
Electric and Magnetic Fields - Solutions 1
Chris White ([email protected])
1. The dot product between two vectors is zero if either of the vectors has zero magnitude, or if cos = 0,
where i
Electric and Magnetic Fields - Solutions 5
Chris White ([email protected])
1. The drift velocity is the average velocity that a mobile charge carrying particle has in a conducting
material,
y
L
Q1
P
x
L
x
Q2
Figure 1: Charge configuration used in question 1.
Electric and Magnetic Fields - Exercises 2
Chris White ([email protected])
Questions marked with () are meant to be more
Electric and Magnetic Fields - Solutions 2
Chris White ([email protected])
1. The field due to a system of point charges can be obtained by superposing the field due to the individual
charg
Electric and Magnetic Fields - Solutions 3
Chris White ([email protected])
1. Gauss law states that
E =
Q
,
0
where E is the total electric flux through a closed surface S, and Q the total
v +
v
R
Figure 1: The electron and proton of question 4.
Electric and Magnetic Fields - Exercises 6
Chris White ([email protected])
Questions marked with () are meant to be more challenging
E
L
L
Figure 1: The electron loop (shown in red) considered in problem 1.
Electric and Magnetic Fields - Exercises 4
Chris White ([email protected])
Questions marked with () are meant to be
Electric and Magnetic Fields - Exercises 3
Chris White ([email protected])
Questions marked with () are meant to be more challenging. Please let me know of any typing errors and
/ or other
Electric and Magnetic Fields - Exercises 5
Chris White ([email protected])
Questions marked with () are meant to be more challenging. Please let me know of any typing errors and
/ or other
z
y
x
I
I
(a)
y
(b)
Figure 1: (a) An infinite sheet of current in the (x, y) plane; (b) a view looking down the x-axis, such that
the current is pointing towards us.
Electric and Magnetic Fields - Exe
Electric and Magnetic Fields - Exercises 1
Chris White ([email protected])
Questions marked with () are meant to be more challenging. Please let me know of any typing errors and
/ or other
Quantum Physics PHY4215 - Exercise Sheet 5
1. The Gaussian wavepacket is a wave with variable amplitude
(x) k0 ,d (x) =
2
1
ik0 x x 2
2d
e
1
4 d
Show that this is a normalized wavefunction, i.e.
Z
(x
Electrostatics
When some materials are rubbed, they become charged with static electricity. They can then
attract other materials. The force of friction causes charging. This effect can be used in som
Radioactivity
Everything around us is made up of atoms. Each atom has a central nucleus, with
electrons orbiting around it.
The nuclei of most atoms are stable; however, in a small
number of atoms, th
Alpha,
Beta and Gamma
Radiation
Nuclear radiation occurs naturally and is around us all the time.
Radioactive decay occurs when a nucleus of an unstable atom breaks down and
emits ionising radiation.
Alpha,
Beta and Gamma
Radiation
Nuclear radiation occurs naturally and is around us all the time.
Radioactive decay occurs when a nucleus of an unstable atom breaks down and
emits ionising radiation.
Electricity from the Sun
The sun is a stable source of energy. It transfers energy to Earth as light and infra-red radiation.
Energy from the sun can be used to generate electricity directly. Photocel
Heat and Temperature
The temperature of a substance tells us how much energy each particle has. It is a
measure of the average kinetic energy per particle in a substance. Heat is a
measure of energy.
Physics
Investigato
ry Project
Ishika Gupta
XII-A
9
2016-17
CERTIFICATE
This is to certify that ISHIKA GUPTA of class XII-A has
completed the project on
To investigate the relation between the rati