Electrons Waves and Photons Study guides, Class notes & Summaries

What is meant by work function (2) - Minimum energy required by an electron to escape from (1) a metal surface (1) What is meant by ionisation energy? (2) - Minimum energy required to remove an electron from an atom (1) from the ground state (1) Why do emitted electrons have a kinetic energy that varies up to a maximum 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 meta...

TEST BANK FOR CHEMISTRY; AN ATOMS FIRST APPROACH, 2ND EDITION BY STEVEN S. ZUMDAHL | COMPLETE CHAPTER 1-21. 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 w...

X-rays are correct answersa form of ionizing radiation When passing through matter, ionizing radiation does what correct answersproduces negatively and positively charged particles (ions) that cause harm to biological tissues What are the six consequences of ionization in human cells correct answers-creation of unstable atoms -production of free electrons -production of low energy x-ray photons -creation of reactive free radicals capable of producing substances poisonous to the cell -c...

TEST BANK FOR CHEMISTRY: AN ATOMS FIRST APPROACH 2ND EDITION BY STEVEN S. ZUMDAHL | COMPLETE CHAPTER 1-21. 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...

RHS EXAM Questions and answers. 100% Accurate. Verified. Electrons - Beta particles = fast moving emmited from nucleus of radioactive atoms Cathode rays = high speed originate in xray tube Radiation - Form of energy carried by waves or stream of particles Xray - Beam of energy has power to penetrate substances and record image Dose rate - Dose received over time , rapid delivery no time for body to repair Radiographs - Picture or visible photographic image Total dose - Qu...

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...

Mosby Exam(question with complete solution)2023 passed An injection set that includes a needle with plastic wings attached is called: A. large bore. B. butterfly. C. contrast agent injecting set. D. sterile tray. - correct answer b X-rays travel as bundles of energy called: A. energy waves. B. phasers. C. electromagnetic bursts. D. photons. - correct answer d The increase in brightness caused by acceleration of the electrons in the image intensifier is called: A...

LRA 222 Final Exam Review Latest Update 100% Pass The anode includes the: target and induction motor the cathode includes the: Filaments and focusing cup the motor that turns the anode operates through what? mutual induction with a rotating anode, the focal spot becomes a: Track the focusing cup is able to keep the electrons together because of what? like charges repel The stator is made up of electromagnets? True prepping the rotor but not making an exposure on a regular basis is related ...

b. 1895 - In what year were x-rays discovered? a. 1892 b. 1895 c. 1898 d. 1901 c. 1898 - In what year were some of the biologically damaging effects of x-rays discovered? a. 1892 b. 1895 c. 1898 d. 1901 d. Vacuum Tubes - X-rays were discovered in experiments dealing with electricity and ______. a. Ionization b. Magnetism c. Atomic structure d. Vacuum Tubes a. Fluoresce - X-rays were discovered when they caused a barium platinocyanide-coated plate to __________. ...

LRA 211 Final Review Study Guide (223/2024) Graded A+ The earliest atomic theory based on an arrangement similar to the solar system is attributed to Rutherford. The three fundamental particles of the atom are the neutron, electron, and proton. The atomic nucleus contains protons and neutrons. The component of the nucleus that has a positive charge and mass is the proton. The electron shell closest to the nucleus is lettered "K". Which of the following is not part of the electromagnetic ...