important to environmental scientists? Be able to define and give examples of the three laws governing matter and energy-how do these laws affect our understanding of matter/energy quantity and quality Be able to differentiate between potential and kinetic energy Be able to discuss the concept of entropy and how this process affects all living things Check out the chemistry review if you feel you need some additional chemistry background for this section I. One important thing about systems and living
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College Physics OpenStax College Rice University 6100 Main Street MS-380 Houston‚ Texas 77005 To learn more about OpenStax College‚ visit http://openstaxcollege.org. Individual print copies and bulk orders can be purchased through our website. © 2013 by Rice University. The textbook content was produced by OpenStax College and is licensed under a Creative Commons Attribution 3.0 Unported License. Under the license‚ any user of the textbook or the textbook content herein must provide proper attribution
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the top of the 1st hill with the speed of 32.9 m/s Energy= 800156 J P= E/T = 800156J/40s = 200003.9 W b) E1-Wf =E2 The expected speed of the cars is 8.5 m/s. Friction did 608000 J of work on the cars from the top of the hill to the braking zone. The expected speed of the cars is 8.5 m/s. Friction did 608000 J of work on the cars from the top of the hill to the braking zone. Eg+Ek-Wf= Eg1+Ek1 mgh+1/2mv2-Wf= mgh1+1/2mv21 Wf= mgh+1/2mv2- mgh1-1/2mv21 = (9.8)(65)+1/2(2
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wheel the kinetic energy has two components‚ translational due to the bodily movement of the mass centre down the slope and rotational due to the wheel spin. Now the source of this energy is the loss in potential energy as the wheel moves down the slope. If it is reasonable to assume that friction effects are insignificant then no energy is lost. Thus the loss in potential energy becomes a gain in kinetic energy. Hence‚ Loss in potential energy = mgh‚ is equal to the (1) Gain in kinetic energy
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way softball works and why it works. Momentum Running: When running the bases in softball‚ there is a lot more to it then the average person would think. While we run the bases‚ we are changing our momentum by applying more force‚ the force of friction‚ onto the ground which causes more force exerted on us because of Newton’s 3rd law. Applying more force in turn increases the base-runner’s velocity. Catching: When catching a fly ball or grounder‚ it is best to move with the ball and not catch
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Describe and explain how river processes change along the long profile of a river A river changes shape as it flows from its source (where a river starts) to its mouth (where a river flows into a sea or lake). The shape of the long profile (a slice through the river from source to mouth) shows how the rivers gradient‚ height‚ energy and load changes due to erosion processes such as abrasion‚ cavitation‚ attrition‚ hydraulic action and corrosion as well as how the rivers deposition rates fluxuate
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School of Engineering and Design SED06: Examinations Cover Sheet SUBJECT AREA: MECHANICAL ENGINEERING Module Code: Module Title: ME1301 THERMOFLUIDS Date-Month: MAY Year: 2012 Time allowed Hours: THREE Answer FOUR questions: TWO from Section A‚ TWO from Section B. Examiner(s): Prof. T. Megaritis and Dr R. Kirby Special Stationery Requirements: Thermodynamic and Transport Properties of Fluids‚ GFC Rogers and YR Mayhew. Only School approved calculators are allowed. Use
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remediation. AMD prevention is a key requirement for meeting mine closure standards and AMD prediction plays an integral role in waste management and AMD prevention. However‚ both the static and kinetic tests used currently have shortfalls‚ including only providing a worst case scenario‚ providing limited kinetic data‚ particularly with respect to microbial catalysis or requiring an excessive time frame for the provision of useful data. In this study‚ we review biological tests reported to predict
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Energetic vibrations can be explained by using the example of a mass on a spring where potential and kinetic energy are involved. This system can be put into motion by “hitting the mass to put in kinetic energy or by pulling it to one side to put in potential energy” (Crowell) and will continue in this motion‚ trading the energy from potential to kinetic and back again‚ assuming there is no friction in the system. Knowing that the total energy is constant and that it is proportional to the square of
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that I do almost everyday and has been a big part of my life for as long as I can remember. My poster depicts the physics involved in kicking‚ the ball rolling across the field‚ and bending the ball. Kicking a soccer ball involves transferring kinetic energy‚ or movement‚ from your leg to the ball. The energy you apply into the ball combines with the stored energy already present combining to create a velocity that is even faster than the object that hit it (your leg). Factors
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