Kinetic theory

Breaks are not something people take the time to think about. Even if they are fundamental to the vehicles many people use every day. The functionality of breaks is contributed to physics and engineers ability to understand that physics. There is a lot going on when people press on the brake pedal in their car. The most basic principle of brake pads is in fact friction. This friction is the thing that transfers the energy of the car moving forward to heat energy. Brakes also use pressure as a…

We performed all calculations with the Gaussian09 package [17] at the B97D/6-31+G(d) level of theory [18], with reactions simulated in an acetonitrile solvent, a polar solvent, by the SMD continuum solvation model [19] to stabilize anion and cation behavior. Our jobs specifically involved density functional theory (DFT) to approximate solutions to the Schrödinger equation of our systems [31]. These methods assume certain parameters for the system and…

Physics can often explain many of the everyday activities of life; from playing football to ice skating to visiting an amusement park. Most people step into an amusement park excited for the thrill of riding all of the roller coasters without ever giving any thought to the physics behind the ride. There are several components of physics which contribute to the thrill of roller coasters, including gravitational forces, the law of conservation of energy, friction, centripetal force, and normal…

Research Question: To compare the enthalpy change of reaction of 3 neutralization reactions by using 3 different acids of distinct pH. The same base of NaOH will be used in all three experiments. Introduction: Chemical reactions always have energy change. Energy in the form of heat, if liberated is known as exothermic and if absorbed in the reaction is known as endothermic. When a reaction carried out under standard condition at a of temperature 298K and 1 atm of pressure and 1 mole of water…

The TG and DTA curves obtained for the compounds (C1-C5) are shown in Figure 9. Table 4 lists the results of the thermal studies of these compounds with the initial and final temperatures (ºC), assignments of each decomposition stage based on mass calculation and DTA peaks. These assignments (Δm - Calcd.) are based on the structural fragments from the theoretical formulae of the compounds (C1–C5). This implies that the groups proposed in the right column of Table 4 are not necessarily the…

particles called ........ (A) heat energy (B) light energy (C) of electric energy (D) sound energy 10. When you throw a ball vertically upwards, there will be a change of energy of energy .... (A) the potential to be heat (B) kinetic into heat (C) potential into kinetic (D) kinetic into potential 11. Look at the picture above! Large resultant force acting on the body that is .... a. R = F1 + F2 + F3 b. R = F1 + F2 - F3 c. R = F2 + F3 - F1 d. R = F1 - F2 + F3 12. Here are a variety of…

Determination of Isoprenaline Hydrochloride Concentration Using Ultra Violet/ Visible Spectroscopy and Quantification of Sodium and Potassium Using Flame Spectroscopy Introduction In UV/VIS (ultraviolet-visible light) spectroscopy, light absorption as a function of various wavelengths gives data about electronic transitions within a solution [1]. The electronic transitions involve exciting an electron from one principle quantum state to another by the absorption of energy [2]. A change in…

A new, specific, rapid gas chromatography-mass spectrometry (GC-MS) method was described to identify and quantify pregabalin in human plasma. Silylation and acylation reaction were tried for derivatization of pregabalin before GC-MS analysis. Derivatization was achived using N-(tert-butyldimethylsilyl)-N-methyltrifluoroacetamide (MTBSTFA). Identification and quantification of a new derivative were performed in selected ion monitoring mode using electron impact ionization. Pregabalin was…

This lab investigates the affect of sucrose on mitosis in onion root cells. The results of the experiment do not support the hypothesis. As the concentration of sucrose increases, the percent change in root length of the onion decreases. The individual data shows a 44.75% increase in the length of the onion root for the control group (0.0M). This is the highest percent change in onion root length. The solution is likely hypotonic. This means that it contains a higher concentration of water…

the ball transfers its energy to a rock that falls off of the second level. At the second level, the rock contains gravitational potential energy, but as it is falling to the third level, the gravitational potential energy gradually converts into kinetic energy. Once the rock falls, it hits another lever and the opposite side applies a torque, or a rotational force, to a cylinder, allowing it to roll down an inclined plane and strike another set of dominoes. The last domino hits a ball, which…