At long distances, two nuclei repel each other due to the positive protons and the electrostatic force. However, if two nuclei were to be brought close enough the electrostatic repulsion can be overcome by the attractive force of the nuclear force, which becomes stronger at nearer distances. In the diagram below, the electrostatic force between the positively charged nuclei is repulsive, but when the separation is small enough, the attractive nuclear forces is stronger. As a result, the requirement for fusion reaction to occur is that the two nuclei are brought close together for enough time for the nuclear force to
The different amount energies released results in different color. This reason is the same reason that different elements have different line spectra. The quantum theory says that a certain amount of energy has be released or absorbed and Bohr 's said the same but with restrictions. The quantum theory would explain the vast differences in energy in color. The reason atoms need heat is because heat gives the atoms energy which causes them to move to an excited and then back to ground state.
Apparently, once the ball hits the backboard the rapidity of the ball changes. Backspin on the ball will allow the ball to continue in a perpendicular path allowing the ball to have a larger chance of going in. “The backspin, after contact with the back edge or board, will result in a change in rapidity opposite to the spin direction, changing an equal-angle rebound into a rapidity more in the direction of the net” (Willis). Balls without backspin will more than likely just rebound off the rim or backboard and will have a significantly minor chance of going in. Another aspect of the importance of spin is that it transfers energy.
This was then tested against adding more weight in the second table, which increased the acceleration due to gravity, which made the second table faster than the third. While the third table went the slowest, because of the added weight on the cart which pulls back against the weight end more than tables on and two. This whole process in finding a_calculated would be the same as finding F=ma. Which makes this lab fully about testing Newton’s 2nd law and then checking out findings with percent
Ionization refers to the production of gas phase ions suitable for resolution in the mass analyser or mass filter. There are a many on sources available, each has advantages and disadvantages for particular applications. For example, Electron Ionization (EI) gives a high degree of fragmentation, yielding highly detailed mass spectra which when skilfully analyzed can provide important information about structural elucidation/characterization and facilitate identification of unknown compounds by comparison to mass spectral libraries. However, EI is not suitable for coupling to High-performance liquid chromatography, since at atmospheric pressure, the filaments used to generate electrons burn out rapidly. Thus EI is coupled predominantly with Gas Chromatography, where the entire system is under high
Those are the orbitals surrounding the atom where the electrons are. Atoms are made of electrons, protons, and neutrons, and the number of those depends on the element. The amount of electrons and protons depends on the element’s atomic number where the atomic number is equal to the number of protons, which is equal to the
In 1932 James Chadwick discovered a second particle in the nucleus, he fired alpha particles at beryllium and found that neutrons were released. He revised Bohr’s model of the atom to include a representation of both protons and neutrons in the visual diagram. Today we know that electrons orbit a nucleus made up of protons and neutrons and that the electrons can be described as both waves and
Activity: 1. Observe and describe the effect of different wavelengths on speed of electrons emitted. 2. Observe and describe the effect of different levels of intensity on number of electrons emitted. 3.
The density of a medium is an example of an inertial property. The greater the inertia (i.e., mass density) of individual particles of the medium, the less responsive they will be to the interactions between neighboring particles and the slower that the wave will be. As stated above, sound waves travel faster in solids than they do in liquids than they do in gases. However, within a single phase of matter, the inertial property of density tends to be the property that has a greatest impact upon the speed of sound. A sound wave will travel faster in a less dense material than a more dense material.
Since the particles are in an area of high concentration, there is a greater likelihood of more collisions occurring, resulting in the particles being propelled in the opposite direction, or towards the area of low concentration, eventually leading to a sense of equilibrium of the particles on each side of the gradient. This is the diffusion of the particles. The greater the difference in concentration, the faster diffusion will occur because there are more chances of collision, thus, more chances for the particles to diffuse down their concentration gradient. It is also worth noting that the speed of diffusion is greatly influenced by particle size and temperature. Simple diffusion is unassisted and it does not require energy.