Description and Theories A. Principles and Theories Used to Obtain our Result An conventional spring, when subjected the weight (w=mg) of an object at one of its terminations, will displace a certain distance, x, with an equal and opposite force, F, being created in the spring of which opposes the pull of the weight. This conventional spring will become significantly distorted if it is subjected to a large enough weight and the force, F, will only be able to return the spring to its original configuration once the burden is removed. The force that will restore the spring to its original configuration is directly proportional to the displacement that occurred. The following equation represents this relationship where k denotes the spring constant or stiffness of the spring, F=-kx Since x symbolizes the displacement or change in the length of the spring the above equation can now be surmised in the following manner, F=mg=-k∆l This new form makes it evident that a linear proportion exists between the plot of F as function of changing in length, ∆, thus confirming the spring does in fact obey Hooke’s Law.
According to Beer's Law, the absorbance of crystal violet is proportional to its concentration. Therefore, a spectrophotometer connected to a computer interface will determine the absorbance of the crystal violet over a period of time. Knowledge on how to use a spectrophotometer is necessary to
Experiment 1: Pressure, Temperature, and Velocity Measurement Objective: The objective of this experiment is to determine the pressure and density of laboratory air, calibrate a pressure transducer and scannivalve, then determine the test section speed as a function of fan speed using three methods of velocity measurement. Equipment: Absolute pressure transducer, digital thermometer, pressure transducer (voltmeter), micromanometer, scannivalve, Pitot tube, low-speed wind tunnel. Part 1: Measurement of Atmospheric Pressure and Density 1. Read the barometer and wind-tunnel thermocouple. 2.
For most purposes Newton's laws of gravity apply, with minor modifications to take the general theory of relativity into account. 2. Inertia - A property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force. 3. Potential Energy - Is the energy stored in an object due to its position in a force field or in a system due to its configuration.
To analyse this further, we can observe Newton’s first law of motion. Newton’s law describes how an object in motion, remains in motion. This is why the roller coaster continues going up the slope [1]. However, the KE is lost, as gravity takes effect and
A straight line approximation for the Mohr-Coulomb failure envelope can then be drawn. The friction angle is thus calculated from the slope of the failure envelope. As with any experiment, the more tests taken for different normal stresses, the more accurate the Mohr-Coulomb failure envelope will be. Experimental Procedure * Weigh the initial mass of soil and record it. * Measure the height, width and length of the shear box and record it.
In simple terms , a law describes what nature does under certain conditions, and will predict what will happen as long as those conditions are met. Can not be changed. Theories have a few similarities to a scientific law, but is the opposite when it comes to the rest. Theories are a body of knowledge and explanatory concepts that seek to increase our understanding a major phenomena in nature (Moore, 1984). A scientifically accepted general principle supported by a substantial body of evidence offered to provide an explanation of observed facts and as a basis for future discussion or investigation (Lincoln et al.,1990).
Reaction Order and Rate Laws Abstract The purpose of the experiment is to determine the rate law for a reaction between hydrochloric acid (HCl) and sodium thiosulfate (Na2S2O3) and once found to calculate the k or specific rate constant of the reaction. To determine the reaction order and rate constant; two experiments with several trials of each will be conducted. First, the concentration of HCl will be changed while the concentration of Na2S2O3 is held constant. Next, the concentration of Na2S2O3 will be varied while the concentration of HCl is held constant. From this experimental data it is found that HCl is zero order in the reaction and Na2S2O3 is first order.
Keeping the amount of water and time was imperative and double checking to make sure everything is right was prudent 3. In your own words, explain the collision theory, and what is necessary for a collision to be successful.
Objective: 1. Measure distance and time during constant velocity movement. 2. Calculate average velocity as the slope of a Position vs. Time graph. Theory: Before this lab we learned about displacement, velocity, vector, and scalar.