Conclusions The purpose of this experiment was to find the relationship between a substance’s specific heat and its atomic weight. In the lab‚ the substances with the higher atomic weights had less specific heat. From this‚ we can conclude that specific heat and atomic weight have an inverse relationship‚ meaning as one decreases the other increases. The reason for this is because if atoms are small‚ or light‚ they have the ability to pack tightly together‚ leaving almost no space between them
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Heat of Combustion of Magnesium Background: The students were given full instructions on how to experimentally determine the enthalpy of reaction (ΔHrxn) for the combustion of magnesium ribbon‚ using Hess’s Law. Data Collection: | |Reaction 1 |Reaction 2 | | |(MgO) |(Mg)
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Experiment 9: Maxwell’s Wheel Introduction: The second lab performed on 2/1/12 involved two investigations concerning Maxwell’s wheel. Maxwell’s wheel is an apparatus that consists of a large disk with a long axle. The disk then bound to a support hanging from above with strings attached to each end of the axle. Maxwell’s wheel is considered to be an important apparatus to investigate physical phenomenon’s because it its ability to combine straight line motion and rotation of a rigid body
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ELECTRIC DISCHARGE MACHINING INTRODUCTION * Sometimes it is referred to as spark machining‚ * Its a manufacturing process whereby a desired shape is obtained using electrical discharges (sparks). * Material is removed from the workpiece by a series of rapidly recurring current discharges between two electrodes‚ separated by a dielectric liquid and subject to an electric voltage. * One of the electrodes – ‘tool-electrode’ or ‘tool’ or ‘electrode’. * Other electrode - workpiece-electrode
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ρ(p)=ρ_0 ( 1+(1.16 p)/(1+1.7p))(1.0-ε(T-T_0 ) Peiran Yang et al. (1993) [15] presented a straight forward‚ fast and robust algorithm for Thermo EHL line contact problems. As compared to conventional N-R method this method was more efficient for pressure calculation and can be used for both micro and Non-Newtonian Thermo EHL. This can also be used for solving transient TEHL with good stability numerically. For calculating the pressure distribution they used the dimensionless form of the equations
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1. Shell and Tube Heat Exchanger – Working Principle The shell and tube heat exchanger comprises of two major things as its name state "Shell and Tube". The shell is a major vassel with quantities of tube inside it (Jalmood‚ n.d). Shell and tube heat exchangers are helpful for pressurized application. Heat is exchanged between the liquid in the tubes and the liquid inside the shell. Configuration of the tube pack is such that‚ all the section sides of the tube could be joined with a typical header
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-many physical properties of compounds depend on the intermolecular forces: -wetting (water absorbed by matter) -surface tension -capillary action -melting and boiling points -cohesion (attraction between like molecules) -adhesion (attraction between unlike molecules) -solubility -evaporation -intermolecular forces are much weaker than covalent bonds ex. if covalent bonds are assigned a strength of 100‚ then intermolecular forces are between 0.001 to 15. -there are 3 types of intermolecular
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Chapter 24 Gauss’s Law Multiple Choice 1. Two charges of 15 pC and –40 pC are inside a cube with sides that are of 0.40-m length. Determine the net electric flux through the surface of the cube. a. +2.8 N ( m2/C b. –1.1 N ( m2/C c. +1.1 N ( m2/C d. –2.8 N ( m2/C e. –0.47 N ( m2/C 2. The total electric flux through a closed cylindrical (length = 1.2 m‚ diameter = 0.20 m) surface is equal to –5.0 N ( m2/C. Determine the net charge within the cylinder
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Chapter 10 Phase Transformations in Metals: development of microstructure and alteration of mechanical properties 1. Phase Transformations: a change in the number and/or character of the phases that constitute the microstructure of an alloy *phase: a homogenous portion of a system that has a uniform physical and chemical make up. *Stages of phase transformation 1. Nucleation: the formation of very small particals‚ called nuclei‚ of the new phase‚ which are capable of growing. 2. Growth: The
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I’m pretty sure we have had this discussion before so i’ve got one of my old copypastas from a previous thread. >> Force travels through solid objects at roughly the speed of sound in that object‚ if you force a piece of an object to move at greater than the speed of sound through that medium it will simply tear whatever is holding it together without transmitting force to the surrounding structure. this gives a kind of hole punch effect if the projectile is moving faster than the speed of
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