Homework Statement
For lead N=210 Z=82 Pb (atomic mass = 209.984163 u) obtain each of the following:
(a) The mass defect in atomic mass units
u
(b) the binding energy (in MeV)
MeV
(c) the binding energy per nucleon (in MeV)
MeV
Homework Equations
The Attempt at a...
Homework Statement
The K characteristic X-ray line for tungsten has a wavelength of 1.94 10-11 m. What is the difference in energy between the two energy levels that give rise to this line? Express this in each of the following units.
(a) joules
J
(b) electron volts
eV
Homework...
Homework Statement
The atomic number of tantalum is Z = 73. According to the Bohr model, what is the energy (in joules) of a K X-ray photon?
Homework Equations
Energy= -(13.6 eV)Z^2/n^2
The Attempt at a Solution
I don't know what to use for n
Homework Statement
Suppose the minimum uncertainty in the position of a particle is equal to its de Broglie wavelength. If the particle has an average speed of 4.7 105 m/s, what is the minimum uncertainty in its speed?
Homework Equations
lambda=h/p & (Py)(Y) is greater than or...
Homework Statement
Doubly ionized lithium Li2+ (Z = 3) and triply ionized beryllium Be3+ (Z = 4) each emit a line spectrum. For a certain series of lines in the lithium spectrum, the shortest wavelength is 1979.8 nm. For the same series of lines in the beryllium spectrum, what is the...
Homework Statement
n a Rutherford scattering experiment a target nucleus has a diameter of 3.5 10-14 m. The incoming has a mass of 6.64 10-27 kg. What is the kinetic energy of an particle that has a de Broglie wavelength equal to the diameter of the target nucleus? Ignore relativistic...
Homework Statement
What is each of the following?
(a) the wavelength of a 6.0 eV photon
m
(b) the de Broglie wavelength of a 6.0 eV electron
m
Homework Equations
?
The Attempt at a Solution
None so far
So I use .5mv^2 to get the KE.
From there I divide the sum of the KE and work function by Planck's Constant. I then divide c by f to get the wavelength?
Homework Statement
Light is incident on the surface of metallic sodium, whose work function is 2.3 eV. The maximum speed of the photoelectrons emitted by the surface is 1.08 106 m/s. What is the wavelength of the light?
Homework Equations
e=hf
p=h/wavelength
The Attempt...
Homework Statement
Suppose that you are traveling on board a spacecraft that is moving with respect to the Earth at a speed of 0.925c. You are breathing at a rate of 10.0 breaths per minute. As monitored on earth, what is your breathing rate in breaths per minute?
Homework Equations...