Consider a neutron as consisting of a proton plus a π- meson in
an l =...
Consider a neutron as consisting of a proton plus a π- meson in
an l = 1 orbital state. What would be the orbital magnetic dipole
moment of such a configuration? Express your resultas a multiple of
the proton’s magnetic moment.
How would you determine the number of proton-proton pairs, the
number of neutron-neutron pairs, and the number of neutron-neutron
pairs in an atom given its atomic number and mass number? Hence
show that Carbon has 15 proton-proton pairs and 10 neutron-neutron
pairs.
If you drop a proton and a neutron in a gravitational field,
they both fall, but the proton has a charge and accelerating
charges radiate energy, so that leaves less kinetic energy for the
proton and by this reasoning, it should fall more slowly than a
charge-free object.
The issue is discussed but not in the terms above in Peierls's
"Surprises in Theoretical Physics" in the chapter "radiation in
hyperbolic motion", but I didn't understand the chapter well enough
(or...
The proton mass is 1.007276 amu , the neutron mass is 1.008665
amu , and the electron mass is 5.486×10−4 amu .
What is the expected mass of a potassium-39 nucleus, based on
the total mass of its protons and neutrons?
The actual measured mass of a potassium-39 atom is 38.963707 amu
. What is the mass defect, Δm, for a potassium-39
nucleus?
What is the binding energy for a potassium-39 nucleus?
What is the binding energy, ΔE, for a...
(a) You decided to turn a neutron into a proton. Making sure
that the charge is conserved, you wrote down n → p + e-.
When you actually did the experiment, an antineutrino came out in
addition, making the actual interaction n → p + e -+ ¯ν.
Among what needs to be conserved, what was not conserved in the
interaction without the antineutrino?
(b) You managed to capture the emitted electron inside of a
one-dimensional infinite potential well with...
Outside the nucleus, the neutron itself is radioactive and
decays into a proton, an electron, and an antineutrino. The
half-life of a neutron (mass = 1.675 × 10-27 kg) outside the
nucleus is 10.4 min. On average, over what distance x would a beam
of 5.55-eV neutrons travel before the number of neutrons decreased
to 75.0% of its initial value? Ignore relativistic effects.
The deuteron is a bound state of a proton and a
neutron of total angular momentum j = 1. It is known to be
principally an S(ℓ = 0) state with a small admixture of a D(ℓ = 2)
state. Calculate the magnetic moment of the pure d state n-p system
with j = 1. Assume that the n and p spins are to be coupled to make
the total spin s which is then coupled to the orbital angular...
25)
The proton mass is 1.007276 amu , the neutron mass is 1.008665
amu , and the electron mass is 5.486×10−4 amu
Part A
What is the expected mass of a potassium-39 nucleus, based on
the total mass of its protons and neutrons?
Part C
What is the binding energy for a potassium-39 nucleus?
Express your answer numerically in joules per mole.
Please solve this conceptual question.
In positron decay, a proton in the nucleus becomes a neutron and
its positive charge is carried away by the positron. A neutron,
though, has a larger rest energy than a proton. How is that
possible?
(A) A deuteron (one proton and one neutron) is traveling at 3 ·
105 m/s.
The deuteron is in a uniform electric field which causes it to
come to a stop.
(a) How much work is done by the electric field (in Joules)?
(b) Draw a diagram showing the direction of the velocity of the
particle and the force on the particle. Include the direction of
the external electric field.
(c) Draw the same diagram for an electron with the...