Planck - Study guides, Class notes & Summaries
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CLEP Chemistry Latest Update Graded A
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CLEP Chemistry Latest Update Graded A John Dalton Proposed that matter is composed of atoms; these atoms have different identities called elements, which combine to form compounds; measured masses of reactants and products. 
J.J. Thompson Observed deflection of particles in a cathode ray tube; proposed that atoms are composed of positive and negative charges; developed the plum pudding model of the atom 
Robert Millikan Calculated the charge-to-mass ratio of electrons using oil drops falling in ...
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ASTR 61 Exam 1Questions Well Solved| Success Guaranteed|18 Pages
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A Planck curve is indicative of the following properties: 
 
A temperature, velocity and position 
B temperature, wavelength and velocity 
C spectral type, temperature and energy 
D intensity, frequency and temperature 
E frequency, wavelength and velocity - ️️D 
A third quarter moon crosses an observer's meridian at about: 
 
A midnight 
B noon 
C sunrise 
D sunset 
E 9:00 PM - ️️C 
According to Kepler's second law, a planet is moving fastest in its orbit when it is at: 
 
A aphelion ...
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Introduction to Group Theory with Applications in Molecular and Solid State Physics
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Introduction to Group Theory 
with Applications in Molecular and Solid State Physics 
Karsten Horn 
Fritz-Haber-Institut der Max-Planck-Gesellschaft
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Radiation Therapy Board Exam Review - MOSBY Questions with well explained answers
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Orthovoltage machines operated in the range of 
A. 10-40 KV 
B. 100 KV 
C. 100-200 KV 
D. 150-500 KV - Answer-D. 150-500 KV 
0.01 J/Kg is equivalent to: 
A. 1 Roengtgen 
B. 1 RAD 
C. 1 Gy 
D. 1 Bq - Answer-B. 1 RAD 
A pocket dosimeter is a 
A. low energy dosimeter 
B. thermoluminescent dosimeter 
C. cutie pie 
D. none of the above - Answer-A. low energy dosimeter 
Traditional unit of absorbed dose equivalent. 
A. REM 
B. RAD 
C. Roentgen 
D. RBE - Answer-A. REM 
Unit of exposure in air is:A. Roe...
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BCH 463 TOP Exam Questions and CORRECT Answers
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*Exam 1 Questions*See Below. 
What is the "average energy" in the equation that Planck used to fix the Rayleigh-Jean 
classical prediction on blackbody radiation? 
(A) hν/(e^(hν/(k_B T))-1) 
(B) 8πν/c^3 
(C) k_B T 
(D) nhv(A) hν/(e^(hν/(k_B T))-1) 
As seen in the image, if the 8π^3/c^3 terms are ignored, the simplified expression is the 
answer
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BCH 463: BIOPHYSICAL CHEMISTRY FINAL EXAM 2024 WITH 100% ACCURATE SOLUTIONS
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BCH 463: BIOPHYSICAL CHEMISTRY FINAL EXAM 2024 WITH 100% ACCURATE SOLUTIONS 
 
What is the "average energy" in the equation that Planck used to fix the Rayleigh-Jean classical prediction on blackbody radiation? 
 
(A) hν/(e^(hν/(k_B T))-1) 
(B) 8πν/c^3 
(C) k_B T 
(D) nhv - correct answer (A) hν/(e^(hν/(k_B T))-1) 
 
As seen in the image, if the 8π^3/c^3 terms are ignored, the simplified expression is the answer. 
 
The following figure shows the measurement of the energy density emitte...
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DAT General Chemistry 172 Questions with 100% Correct Answers | Updated | Guaranteed A+
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Atomic Number - ️️number of protons found in that atom; low number; (Z) 
 
Mass Number - ️️Protons + Neutrons; high number; (A) 
 
Atomic Mass - ️️relative mass of that atom compared to the mass of a carbon-12 atom (which is set at 12.00); measured in amu; 
 
1 amu = - ️️1.66x10^-24 
 
Atomic Weight - ️️weight (g) of one mole (mol) of a given element (g/mol); the weighted average of all the masses (not the weights) of an element, weighted according to the natural abundance of...
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Astronomy 111- Final Exam || with 100% Accurate Solutions.
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If we traveled away from Earth through the galaxy, the constellations correct answers would appear to change slowly 
 
The scientific method can be summarized using the three words correct answers observation 
theory 
testing 
 
Galileo's observations of the full phase of Venus were inconsistent with the Ptolemaic model of the solar system because correct answers In the Ptolemaic model Venus is always closer to the Earth than the Sun is 
 
One Sidereal day is _____ than one solar day correct an...
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Quantum Mechanics Already Graded A+
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Quantum Mechanics Already Graded A+ 
Max Planck : German physicist who solved the problem of why different wave lengths are 
emitted at different temperatures- proposed that the energy absorbed or emitted by an object could 
only occur in "pieces"- which he called quantum 
Wener Heisenberg : German theoretical physicist- published his theory on quantum 
mechanics when he was 23- concluded that it is impossible to make a measurement on an object 
without disturbing the object 
Albert...
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Chemistry Praxis Review Questions and Answers
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Schrodinger (1925) Continued upon Bohr's findings to determine where electrons are typically found. 
 
Heisenberg (1927) Created the heisenberg uncertainty principle because you never can predict where the electron is. (Breaking Bad) 
 
De Broglie (1924) Electrons act like waves around the atom. 
 
Niels Bohr (Bohrbit) (1913) Electrons can orbit the nucleus in certain special orbits at different energy levels around the nucleus. 
 
Earnest Rutherford (foil) (1910) Fired beam of alpha particles ...
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