Floating charge

a) According to the right-hand rule, the direction of the magnetic fields of the 3 wires are shown: We find the magnetic fields B1, B2 and B3: 퐵1=퐵2= 푢0 푖 = 푢0 푖 = 4∗3.14×10−7 ∗(3.65) =ퟒퟐ.ퟔퟔퟎ풖푻 2휋푟 2휋( 2푎) 2 ∗ 3.14 ∗( 2(0.0121)) 퐵3= 푢0 푖 = 푢0 푖 = 4∗3.14×10−7 ∗(3.65) =ퟐퟎ.ퟏퟏퟎ풖푻 2휋푟 2휋(3푎) 2 ∗ 3.14 ∗(3∗(0.0121)) The x components of the B1 and B2 cancel each other; therefore the net magnetic field will be downward and we have (the negative sign is because the direction is downward): 퐵=− 퐵1cos 45 +…

5.4. Electrosensitive hydrogels Hydrogel swells in response to an electrical stimulus with a mechanism very similar to pH, experiences shrinkage, and bending. The major difference between electrical and pH stimulations is that the electric field moves mobile ions in order to regulate an ion concentration gradient through the hydrogel and the solution [54,55]. Polymeric networks containing ionizable groups can have important electrical behavior under an electric field. The electrosensitive…

reasonable to say that it is a diffusion-controlled (reversible) reaction. According to Fig. 2, the reaction is an irreversible redox reaction at the electrode electrolyte interface at low sweep rate. This irreversible nature of the electrode reduces the charge-transfer processes at the interface. We believe that this is a possible reason for the decrease in the supercapacitive properties with the scan…

Consumer Credit: Too Easy To Fail What comes to mind when the term “credit” is used varies from person to person. Maybe credit means a pair of shiny new shoes, or just a fun shopping trip in general. Or maybe credit invokes stress when a pile of bills and late notices comes to mind. Or maybe, nothing comes to mind at all, because cash is king. Like everything, credit over the years has evolved. It has changed its face and grown into something much different from when it began. In today…

how it works. One should also understand that electricity is a type of energy. Electricity is simply the flow of electric charge. This may sound fairly straight forward, but there is a lot more to this simple statement. One might wonder: Where exactly is this charge coming from? What is obtaining this charge? How is the charge flowing and to where? How does an electric charge power a machine or make lights light up? The answer to all these questions begin with the basic building blocks of matter…

much smaller and have less mass than atoms, and that they are uniformly present in many different types of substances. With this new discovery, the question of a balancing positive charge arose. Atoms are known to be charge-neutral, so it was believed that they must contain a positive charge that balanced the negative charge of the electron. Thomson proposed that the electrons, which are negatively charged, were small particles contained within a positively charged sphere. The model of this was…

The Battle of Gettysburg was one of the most important battles of the Civil War. People still consider it historical. The battle could have went either way. The battle, named after Gettysburg, was a hard fought competition for the Confederates, as they maintained confidence throughout the war. The battle was historical in its own way, there were great weapons, and recognized men. The Union had greater numbers than the Confederates. The Union had about 90,000 soldiers. The Confederates had about…

is to start charging patients whose illness is self-inflicted. Treating alcohol-related injuries costs the NHS £3 billion every year and if they charge for this would help cover the cost, and could also drive people away from heavy consumption, effectively easing pressure on the service, if there is a price to pay. Those who say that the NHS should charge for self – inflicted injuries argue that the NHS is using more than £5 billion a year on treating patients who come in with smoking, obesity…

2Ni0.13Co0.13Mn0.54O2 3.4.1. Electrochemical charge/discharge behavior Figure 9 (a-d) shows the charge/discharge profiles of four Li1.2Ni0.13Co0.13Mn0.54O2 electrodes (EV, CA/EDTA, CA and EDTA) cycled at 0.1C between 2.0 and 4.8 V, while Fig. 9(e) depicts the initial charge/discharge profiles of four Li1.2Ni0.13Co0.13Mn0.54O2 electrodes under the same conditions. All the initial charge/discharge profiles show the same general features. All the initial charge curves exhibit the turning point…

conductor. The first requirement is that the sample must contain electrically charged particles. The second requirement is that the electrically charged particles must be able to freely move when electricity is applied to them. Faraday named these “charge carriers” ions. Faraday also introduced the terms cation and anion to distinguish the…