Synoptic physics paraphrased
... and are difficult to absorb. When neutrons travel very close to a nucleus it suddenly experiences a large force. It cannot be an inverse square law like gravity, and it is not electromagnetic. There is a new force that is only detected outside the immediate surroundings of the nucleus. A proton is r ...
... and are difficult to absorb. When neutrons travel very close to a nucleus it suddenly experiences a large force. It cannot be an inverse square law like gravity, and it is not electromagnetic. There is a new force that is only detected outside the immediate surroundings of the nucleus. A proton is r ...
Work done (J) - MrSimonPorter
... Ft = mv – mu The quantity Ft is called the impulse, and of course mv – mu is the change in ...
... Ft = mv – mu The quantity Ft is called the impulse, and of course mv – mu is the change in ...
Forces
... • Nuclear Force: The strongest of all other forces. • Strong Nuclear Force: Holds the nucleus of an atom together despite the large electric force of repulsion between particles in the nucleus. • Weak Nuclear Force: Exists inside the nucleus. – A form of electromagnetic force. – Involved in the bre ...
... • Nuclear Force: The strongest of all other forces. • Strong Nuclear Force: Holds the nucleus of an atom together despite the large electric force of repulsion between particles in the nucleus. • Weak Nuclear Force: Exists inside the nucleus. – A form of electromagnetic force. – Involved in the bre ...
atomic physics
... These orbits are associated with definite energies and are also called energy shells or energy levels. In these orbits, the electron's acceleration does not result in radiation and energy loss as required by classical electromagnetics. The Bohr model of an atom was based upon Planck's quantum theory ...
... These orbits are associated with definite energies and are also called energy shells or energy levels. In these orbits, the electron's acceleration does not result in radiation and energy loss as required by classical electromagnetics. The Bohr model of an atom was based upon Planck's quantum theory ...
PPTX - University of Toronto Physics
... The Fundamental Forces of Nature The four fundamental forces of nature: 1.Gravity 2.Electromagnetism 3.Weak Nuclear Force 4.Strong Nuclear Force • Gravity is always attractive, and acts between any two objects. • Electromagnetism causes repulsion and attraction between charged particles, such as th ...
... The Fundamental Forces of Nature The four fundamental forces of nature: 1.Gravity 2.Electromagnetism 3.Weak Nuclear Force 4.Strong Nuclear Force • Gravity is always attractive, and acts between any two objects. • Electromagnetism causes repulsion and attraction between charged particles, such as th ...
Energy is the ability to do work
... (a) How fast must a 3000-kg elephant move to have the same kinetic energy as a 65.0-kg sprinter running at 10.0 m/s? (b) Discuss how the larger energies needed for the movement of larger animals would relate to metabolic rates. ...
... (a) How fast must a 3000-kg elephant move to have the same kinetic energy as a 65.0-kg sprinter running at 10.0 m/s? (b) Discuss how the larger energies needed for the movement of larger animals would relate to metabolic rates. ...
Contact forces
... or try to move across each other. Friction always opposes the motion or attempted motion of one surface across another surface. ...
... or try to move across each other. Friction always opposes the motion or attempted motion of one surface across another surface. ...
Lecture 1.
... call as nuclear force. It is a very intense force but it has a very short range inside nucleus only. Nuclear forces are independent of charges of charged particles. The nuclear force is the same in between two protons and in between two neutrons. Introduced by Hideki Yukawa (1907 - 1981): o 1935: pi ...
... call as nuclear force. It is a very intense force but it has a very short range inside nucleus only. Nuclear forces are independent of charges of charged particles. The nuclear force is the same in between two protons and in between two neutrons. Introduced by Hideki Yukawa (1907 - 1981): o 1935: pi ...
A rough estimate or calculated guess
... force which exists in response to another force acting on an object - always acts in opposite direction to force causing it ...
... force which exists in response to another force acting on an object - always acts in opposite direction to force causing it ...
Ch 2 Notes: 2
... 2. Electromagnetic Force = the force between electrical charges. May be a force of attraction or repulsion. It is assumed that their charges are equal in magnitude, but opposite in direction. 3. Weak Nuclear Force = the force between subatomic particles during certain types of radioactive decay. Bot ...
... 2. Electromagnetic Force = the force between electrical charges. May be a force of attraction or repulsion. It is assumed that their charges are equal in magnitude, but opposite in direction. 3. Weak Nuclear Force = the force between subatomic particles during certain types of radioactive decay. Bot ...
Nuclear force
The nuclear force (or nucleon–nucleon interaction or residual strong force) is the force between protons and neutrons, subatomic particles that are collectively called nucleons. The nuclear force is responsible for binding protons and neutrons into atomic nuclei. Neutrons and protons are affected by the nuclear force almost identically. Since protons have charge +1 e, they experience a Coulomb repulsion that tends to push them apart, but at short range the nuclear force is sufficiently attractive as to overcome the electromagnetic repulsive force. The mass of a nucleus is less than the sum total of the individual masses of the protons and neutrons which form it. The difference in mass between bound and unbound nucleons is known as the mass defect. Energy is released when nuclei break apart, and it is this energy that used in nuclear power and nuclear weapons.The nuclear force is powerfully attractive between nucleons at distances of about 1 femtometer (fm, or 1.0 × 10−15 metres) between their centers, but rapidly decreases to insignificance at distances beyond about 2.5 fm. At distances less than 0.7 fm, the nuclear force becomes repulsive. This repulsive component is responsible for the physical size of nuclei, since the nucleons can come no closer than the force allows. By comparison, the size of an atom, measured in angstroms (Å, or 1.0 × 10−10 m), is five orders of magnitude larger. The nuclear force is not simple, however, since it depends on the nucleon spins, has a tensor component, and may depend on the relative momentum of the nucleons.A quantitative description of the nuclear force relies on partially empirical equations that model the internucleon potential energies, or potentials. (Generally, forces within a system of particles can be more simply modeled by describing the system's potential energy; the negative gradient of a potential is equal to the vector force.) The constants for the equations are phenomenological, that is, determined by fitting the equations to experimental data. The internucleon potentials attempt to describe the properties of nucleon–nucleon interaction. Once determined, any given potential can be used in, e.g., the Schrödinger equation to determine the quantum mechanical properties of the nucleon system.The discovery of the neutron in 1932 revealed that atomic nuclei were made of protons and neutrons, held together by an attractive force. By 1935 the nuclear force was conceived to be transmitted by particles called mesons. This theoretical development included a description of the Yukawa potential, an early example of a nuclear potential. Mesons, predicted by theory, were discovered experimentally in 1947. By the 1970s, the quark model had been developed, which showed that the mesons and nucleons were composed of quarks and gluons. By this new model, the nuclear force, resulting from the exchange of mesons between neighboring nucleons, is a residual effect of the strong force.