theory An electric circuit is formed when a conductive path is created to allow electron movement. This movement of electrons‚ carrying an electric charge through a conductive material is called an electric current. Electrons in motion experience collisions with the lattice ions of the conductor which slows their progress. This opposition to the flow of electric current a conductor produces is called its electrical resistance (Walding‚ 2004). The amount of current in the circuit depends on the resistance
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hydrogen gas would be higher than the gas at room temperature. So therefore it would increase the number of moles produce. 2. Explain in terms of particle collisions and Dalton’s law why it can be assumed that the total pressure inside the gas collection tube is equal to the atmospheric pressure outside of the tube. If the number of particle collisions and the pressure inside the gas collection tube was high
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holding the substrate in a particular position that increases the probability of a reaction occurring between the molecules. Products can only be formed when effective collisions occur‚ this means that reactant molecules colliding is not enough to form effective collisions. Reactions can only occur when particles first collide. The collision present must have enough energy impact to overcome the Activation Energy; they must also have a proper positioning to be effective. Increase the concentration of the
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Chapter 5 pg 143 1. Mass 6.00 kg moved by 18.0N. What is its acceleration? Divide both sides by m a=18N/6.00kg convert N = 18N * 1kg*m/s^2 = 18kg*m/s^2 a=18kg*m/s^2/ 6.00 kg = 3m/s^2 a=3m/s^2 7. Truck pulls trailer with friction force of 870 N and a coefficient of friction 0.23. What is the trailer’s normal force. 870N=.023(FN) divide by .023 FN=870N/.023 FN=37826.7N 9. mass 13.0 kg dropped from a cliff. Find its weight Fw=13.0kg * 9.8m/s^2 Fw=127.4kg*m/s^2 Fw=127.4N 13. A force of 175N
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is the process of learning how to be safe and sensible when driving a vehicle on a road and how to reduce accident causes on road for proper driving. It aims to reduce the harm (deaths‚ injuries‚ and property damage) resulting from motor vehicle collisions. Harm from road traffic crashes is greater than that from all other transportation modes (air‚ sea‚ space‚ off-terrain‚ etc.) combined I- Driving license To make roads safer‚ driving licenses exist‚ so we compare two European countries: United-Kingdom
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CHAPTER 2 QUES. & ANSWERS 1. If a network administrator enters these commands on a switch‚ what will be the result? Switch1(config-line)# line console 0 Switch1(config-line)# password cisco Switch1(config-line)# login to secure the console port with the password "cisco" to deny access to the console port by specifying 0 lines are available to gain access to line configuration mode by supplying the required password to configure the privilege exec password that will be used for remote access
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he only chemical elements which are stable multi atom homonuclear molecules at standard temperature and pressure (STP)‚ are hydrogen (H2)‚ nitrogen (N2) and oxygen (O2); plus two halogens‚ fluorine (F2) and chlorine (Cl2). These gases‚ when grouped together with the monatomic noble gases; which are helium (He)‚ neon (Ne)‚ argon (Ar)‚ krypton (Kr)‚ xenon (Xe) and radon (Rn) ; are called "elemental gases". Alternatively they are sometimes known as "molecular gases" to distinguish them from molecules
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References: Use of a Cellular Phone While Driving 1.1.1 Relative Risk Redelmeier and Tibshirani (1997) concluded that use of a cellular phone while driving increases the relative risk of a collision by a factor of 4.3
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true because they all link to the collision theory of particles colliding with enough energy to make a reaction. It is based on the idea that for a chemical reaction to take place‚ the reacting particles have to hit each other hard enough to break or form new bonds. This is called a successful collision. When particles get stimulated or increased in number‚ the reaction will increase in rate because faster collisions will take place making more successful collisions. This diagram shows five solutions
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Catalysts are compounds that accelerate the progress of a reaction without being consumed. They have the ability to increase the rate of reaction in a chemical reaction. Potentially‚ molecules that would once have taken years to interact‚ can take seconds with the addition of a catalyst. The overall purpose of a catalyst is to ensure that reactions proceed effectively which is why a range of catalysts are commonly used in many elements of society. Common examples of where catalysts are used include;
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