Bright source of cold ions for surface-electrode traps
... In this Rapid Communication, we demonstrate that large numbers of low-energy ions can be produced by photoionization of a laser-cooled, isotopically pure atomic sample, providing a robust and virtually fail-safe technique to load shallow or initially poorly compensated surface ion traps. We achieve ...
... In this Rapid Communication, we demonstrate that large numbers of low-energy ions can be produced by photoionization of a laser-cooled, isotopically pure atomic sample, providing a robust and virtually fail-safe technique to load shallow or initially poorly compensated surface ion traps. We achieve ...
2007 F=ma Contest
... 24. A ball of mass m is launched into the air. Ignore air resistance, but assume that there is a wind that exerts a constant force Fo in the –x direction. In terms of F0 and the acceleration due to gravity g, at what angle above the positive x-axis must the ball be launched in order to come back to ...
... 24. A ball of mass m is launched into the air. Ignore air resistance, but assume that there is a wind that exerts a constant force Fo in the –x direction. In terms of F0 and the acceleration due to gravity g, at what angle above the positive x-axis must the ball be launched in order to come back to ...
Document
... The Pauli exclusion principle states that the joining of atoms to form a system (crystal) does not alter the total number of quantum states The discrete energy must split into a band of energies in order that each electron can occupy a distinct quantum state ...
... The Pauli exclusion principle states that the joining of atoms to form a system (crystal) does not alter the total number of quantum states The discrete energy must split into a band of energies in order that each electron can occupy a distinct quantum state ...
Magnetic and Electric Flux Quanta: the Pion Mass
... Not only are the two values different and related by the fine structure constant, but in addition a factor of two has crept into the calculation. Thus far we have scrupulously avoided introducing any factors of two. The presence of a factor of two here is therefore thought to be a not-understood res ...
... Not only are the two values different and related by the fine structure constant, but in addition a factor of two has crept into the calculation. Thus far we have scrupulously avoided introducing any factors of two. The presence of a factor of two here is therefore thought to be a not-understood res ...
CHEMISTRY 132
... a. It's composition can vary but its properties remain constant. b. It's composition and properties can vary. c. It's composition remains constant but its properties varies. d. It's composition and properties remains constant. 3) (3 points) Which of the following volume measurements is the least pre ...
... a. It's composition can vary but its properties remain constant. b. It's composition and properties can vary. c. It's composition remains constant but its properties varies. d. It's composition and properties remains constant. 3) (3 points) Which of the following volume measurements is the least pre ...
Variant 1 - Egypt IG Student Room
... reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. To avoid the issue of disclosure of answer-related information ...
... reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. To avoid the issue of disclosure of answer-related information ...
2s - Chemistry
... Bond Order and Bond Stability The larger the bond order, the more stable the molecule or ion is. Bond order = 0 implies there are equal numbers of electrons in bonding and antibonding orbitals, ~ same stability as separate atoms: no bond formed Bond order > 0 implies there are more electrons in bon ...
... Bond Order and Bond Stability The larger the bond order, the more stable the molecule or ion is. Bond order = 0 implies there are equal numbers of electrons in bonding and antibonding orbitals, ~ same stability as separate atoms: no bond formed Bond order > 0 implies there are more electrons in bon ...
electric potential energy
... Comparison: Electric Potential Energy vs. Electric Potential • Electric Potential Energy (U) - the energy of a charge at some location. • Electric Potential (V) - found for a location only – tells what the EPE would be if a charge were located there (usually talk about potential differences between ...
... Comparison: Electric Potential Energy vs. Electric Potential • Electric Potential Energy (U) - the energy of a charge at some location. • Electric Potential (V) - found for a location only – tells what the EPE would be if a charge were located there (usually talk about potential differences between ...
Chapter 13: Properties of Solutions
... Water molecules orient themselves to the surface of the NaCl crystals. The positive end of the water dipole is oriented toward the Cl- ions, and the negative end of the water dipole is oriented toward the Na+ ions. The ion-dipole attraction pulls the ions from their positions. ...
... Water molecules orient themselves to the surface of the NaCl crystals. The positive end of the water dipole is oriented toward the Cl- ions, and the negative end of the water dipole is oriented toward the Na+ ions. The ion-dipole attraction pulls the ions from their positions. ...
electric potential energy
... Comparison: Electric Potential Energy vs. Electric Potential • Electric Potential Energy (U) - the energy of a charge at some location. • Electric Potential (V) - found for a location only – tells what the EPE would be if a charge were located there (usually talk about potential differences between ...
... Comparison: Electric Potential Energy vs. Electric Potential • Electric Potential Energy (U) - the energy of a charge at some location. • Electric Potential (V) - found for a location only – tells what the EPE would be if a charge were located there (usually talk about potential differences between ...
L. Bell*, et. al., "THz emission by Quantum Beating in a Modulation
... quantum well yields z31 / z21 * 0.5E / !1 kV/ cm". Our data are in good agreement with the prediction of the quantum beating model. The solid line in Fig. 3 shows the electric field determined from capacitance-voltage measurements where we have taken the total field !external field plus internal pol ...
... quantum well yields z31 / z21 * 0.5E / !1 kV/ cm". Our data are in good agreement with the prediction of the quantum beating model. The solid line in Fig. 3 shows the electric field determined from capacitance-voltage measurements where we have taken the total field !external field plus internal pol ...
A Semi-Classical Approach to the Jaynes
... In the Born-Openheimer we get effective potentials V (r). A Feshbach resonnance occurs when a bound state becomes degenerate with an atomic state. By tuning the magnetic field, one can adjust the molecule state to be just above or below the atomic state. V (r) ...
... In the Born-Openheimer we get effective potentials V (r). A Feshbach resonnance occurs when a bound state becomes degenerate with an atomic state. By tuning the magnetic field, one can adjust the molecule state to be just above or below the atomic state. V (r) ...
Lab8_MomentofInertia
... Introduction: You have learned that an unbalanced force causes acceleration and acceleration is a change of velocity. You have also learned that when an object has a velocity we say that the object has kinetic energy, ½ m v2. You then learned about potential energy and how a force such as gravity ca ...
... Introduction: You have learned that an unbalanced force causes acceleration and acceleration is a change of velocity. You have also learned that when an object has a velocity we say that the object has kinetic energy, ½ m v2. You then learned about potential energy and how a force such as gravity ca ...
AP CHEMISTRY – Source: 1999 AP Exam CHAPTER 8 TEST
... questions that are too difficult. Go on to the other questions and come back to the difficult ones later if you have time. It is not expected that everyone will be able to answer all the multiple-choice questions. Part A Directions: Each set of lettered choice below refers to the numbered statement ...
... questions that are too difficult. Go on to the other questions and come back to the difficult ones later if you have time. It is not expected that everyone will be able to answer all the multiple-choice questions. Part A Directions: Each set of lettered choice below refers to the numbered statement ...
Old 105 exam 3 - solutions. doc
... Problem 3. A car is on a ferry boat and both are at rest. The car accelerates forward by pushing backward on the ferry. In doing so the magnitude of the car’s momentum changes by a certain amount, and that of the ferry changes by [3?] ______ a. a larger amount b. the same amount c. a smaller amount ...
... Problem 3. A car is on a ferry boat and both are at rest. The car accelerates forward by pushing backward on the ferry. In doing so the magnitude of the car’s momentum changes by a certain amount, and that of the ferry changes by [3?] ______ a. a larger amount b. the same amount c. a smaller amount ...
V. Angular momentum
... A uniform solid disk is set into rotation with an angular speed i about an axis through its center. While still rotating at this speed, the disk is placed into contact with a horizontal surface and released as in the Figure. (a) What is the angular speed of the disk once pure rolling takes place? ( ...
... A uniform solid disk is set into rotation with an angular speed i about an axis through its center. While still rotating at this speed, the disk is placed into contact with a horizontal surface and released as in the Figure. (a) What is the angular speed of the disk once pure rolling takes place? ( ...
Kinetic energy of rolling.
... A uniform solid disk is set into rotation with an angular speed ωi about an axis through its center. While still rotating at this speed, the disk is placed into contact with a horizontal surface and released as in the Figure. (a) What is the angular speed of the disk once pure rolling takes place? ...
... A uniform solid disk is set into rotation with an angular speed ωi about an axis through its center. While still rotating at this speed, the disk is placed into contact with a horizontal surface and released as in the Figure. (a) What is the angular speed of the disk once pure rolling takes place? ...
Electron Ground States in a Few-Electron quantum Dot.
... profile and using capacitance spectroscopy (which allows one barrier to be very thick) Ashoori et al. [12] succeeded in measuring the linear response of fewelectron quantum dots. However, these capacitance-dots did not showy signatures of circular symmetry. Our new dots allow, for the first time, to ...
... profile and using capacitance spectroscopy (which allows one barrier to be very thick) Ashoori et al. [12] succeeded in measuring the linear response of fewelectron quantum dots. However, these capacitance-dots did not showy signatures of circular symmetry. Our new dots allow, for the first time, to ...
4 Unit Packet - SRHSchem
... 3. Is it possible, given the original data in Table 1, to determine the % composition by mass of H for 2-butene without using the equation given in the model? If so, how? ...
... 3. Is it possible, given the original data in Table 1, to determine the % composition by mass of H for 2-butene without using the equation given in the model? If so, how? ...
Quarter 1
... 1. The illustrations show a conservation-of-mass experiment. The solution in the beaker lost mass because: A. B. C. D. ...
... 1. The illustrations show a conservation-of-mass experiment. The solution in the beaker lost mass because: A. B. C. D. ...
Atomic theory
In chemistry and physics, atomic theory is a scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms. It began as a philosophical concept in ancient Greece and entered the scientific mainstream in the early 19th century when discoveries in the field of chemistry showed that matter did indeed behave as if it were made up of atoms.The word atom comes from the Ancient Greek adjective atomos, meaning ""uncuttable"". 19th century chemists began using the term in connection with the growing number of irreducible chemical elements. While seemingly apropos, around the turn of the 20th century, through various experiments with electromagnetism and radioactivity, physicists discovered that the so-called ""uncuttable atom"" was actually a conglomerate of various subatomic particles (chiefly, electrons, protons and neutrons) which can exist separately from each other. In fact, in certain extreme environments, such as neutron stars, extreme temperature and pressure prevents atoms from existing at all. Since atoms were found to be divisible, physicists later invented the term ""elementary particles"" to describe the ""uncuttable"", though not indestructible, parts of an atom. The field of science which studies subatomic particles is particle physics, and it is in this field that physicists hope to discover the true fundamental nature of matter.