Electron diffraction Study guides, Revision notes & Summaries
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OCR 2023 GCE Physics A H156/01: Breadth in physics AS Level Question Paper & Mark Scheme (Merged)
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2 
© OCR 2023 
Section A 
You should spend a maximum of 25 minutes on this section. 
Write your answer to each question in the box provided. 
1 What is a typical value, in cm, for the wavelength of microwave radiation? 
A 0.0003 
B 0.03 
C 3 
D 300 
Your answer [1] 
2 The diagrams show four systems of forces with three forces acting at a single point. The forces 
are in the same plane. The diagrams are drawn to scale. 
Which system could be in equilibrium? 
A 
B 
C 
D 
Your answer [1] 
3 
© O...
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In-Depth Notes AQA A Level Physics (7408) : Nuclear Physics
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Explore the fascinating world of nuclear physics with these comprehensive AQA Physics A-Level notes. Designed to provide a deep understanding of nuclear phenomena and their implications, this document delves into a wide range of topics critical for your A-level exam preparation. 
 
Topics Covered: 
 
Rutherford Scattering: Discover how Rutherford's pioneering experiment unveiled the structure of the atomic nucleus through the scattering of alpha particles. 
 
Closest Approach: Understand the con...
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Test Bank for Fundamentals of Physics, Extended, 12th Edition by David Halliday
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Test Bank for Fundamentals of Physics, Extended, 12e 12th Edition by David Halliday, Robert Resnick, Jearl Walker. Full Chapters test bank are included - Chapter 1 to 44 
 
1 Measurement 1 
 
1.1 Measuring Things, Including Lengths 1 
 
1.2 Time 5 
 
1.3 Mass 6 
 
2 Motion Along a Straight Line 13 
 
2.1 Position, Displacement, and Average Velocity 13 
 
2.2 Instantaneous Velocity and Speed 18 
 
2.3 Acceleration 20 
 
2.4 Constant Acceleration 23 
 
2.5 Free-Fall Acceleration 28 
 
2.6 Graphica...
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AQA A LEVEL PHYSICS PAPER 1 EXAM LATEST 20242025 Questions with 100% Correct Answers | Updated & Verified
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1.	What is meant by work function (2): Minimum energy required by an electron to escape from (1) a metal surface (1) 
2.	What is meant by ionisation energy? (2): Minimum energy required to remove an electron from an atom (1) from the ground state (1) 
3.	Why do emitted electrons have a kinetic energy that varies up to a maxi- mum value? (4): Energy of a photon is fixed/constant (1) Energy is required for electrons to overcome work function ø (1) Electrons deeper into/below the surface of the me...
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TEST BANK for Fundamentals of Molecular Virology 2nd Edition by Acheson
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TEST BANK for Fundamentals of Molecular Virology 2nd Edition by Acheson. 
Package Title: Testbank 
Course Title: Acheson 2nd edition Chapter Number: 01 
 
 
Question type: Multiple Choice 
 
 
1)	Which of the following terms describes the protein shell that surrounds the viral genome? 
 
a)	capsid 
b)	envelope 
c)	matrix 
d)	virion 
e)	capsomere Answer: a 
 
2)	Which of the following would not be a nucleic acid form found in a viral genome? 
 
a)	dsDNA 
b)	ssDNA 
c)	dsRNA 
d)	ssRNA 
e)	an RNA:DN...
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General Chemistry ACS EXAM Review 168 Questions with Verified Answers,100% CORRECT
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General Chemistry ACS EXAM Review 168 Questions with Verified Answers 
 
Rutherford's Gold Foil Experiment - CORRECT ANSWER proposed that atoms consist of a tiny, massive, positive nucleus surrounded by electrons 
 
nucleus - CORRECT ANSWER contains all the positive charge and nearly all the mass of the atom 
 
James Chadwick - CORRECT ANSWER discovered the neutron 
 
cathode rays - CORRECT ANSWER move from negative electrode to positive electrode (like electrons in a voltaic cell) 
 
Thompson...
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CHM 1045 - exam 3 Questions and Answers 100% Pass
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___________ and _________ are inversely proportional; _________ and _______ are directly 
proportional - frequency and wavelength ; frequency and energy 
1st Law of Thermodynamics - delta-U = q + W 
heat transferred + work done by system on surroundings 
- W is positive if work is done on the system (by surrounding) 
- W is negative if work is done by the system 
A system doing work pushes back on surroundings, it ___________. When surroundings do work, pushes 
back on system, it _________ . - e...
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TEST BANK FOR CHEMISTRY: AN ATOMS FIRST APPROACH, 2ND EDITION BY STEVEN S. ZUMDAHL | COMPLETE CHAPTER 1-21
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Chapter 1 - Chemical Foundations 
1. Consider the element indium, atomic number 49, atomic mass 114.8 g. The nucleus of an atom of indium-112 
contains: 
a. 49 protons, 63 neutrons, 49 electrons. 
b. 49 protons, 49 neutrons. 
c. 49 protons, 49 alpha particles. 
d. 49 protons, 63 neutrons. 
e. 49 protons, 112 neutrons. 
ANSWER: d 
POINTS: 1 
2. A hypothetical element consists of two isotopes of masses 78.95 amu and 80.95 amu with abundances of 
32.9% and 67.1%, respectively. What is the average a...
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UTA Microbiology Chapter 2 Graded A Q&A Complete
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Reflection - The bouncing back of a wave when it hits a surface through which it cannot pass. 
Transmission - the passage of light through an object 
Interference - the combination of two or more waves that results in a single wave 
Diffraction - The bending of a wave as it moves around an obstacle or passes through a narrow 
opening 
Refraction - Change direction and or speed 
refractive index - a measure of the light-bending ability of a medium 
Refractive index equation - 300,000kps/speed kps...
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MMSC490 Practice Exam 1 (100% Accurate Answers)
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cytoplasmic organelles are: 
a. absent in prokaryotic cells and present in eukaryotic cells. 
b. present in both prokaryotic and eukaryotic cells. 
c. present in prokaryotic cells and absent in eukaryotic cells. 
d. absent in both prokaryotic and eukaryotic cells. correct answers a. absent in prokaryotic cells and present in eukaryotic cells 
 
E. coli is a useful model system for molecular biology studies because: 
a. it has a small genome. 
b. it reproduces rapidly. 
c. mutants can easily be i...
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