Week #7 Chapter 10 Static and Current Electricity Exercises (p.221) 6. Strictly speaking‚ will a penny be slightly more massive if it has a negative charge or a positive charge? Explain. A negative charge because when it is negatively charged electrons are added to the penny. 17. What is the voltage at the location of a 0.0001 C charge that has an electric potential energy of 0.5 J (both voltage and potential relative to the same reference point)? Potential = energy Charge = 0.5 J / 0.0001
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Bibliography: http://www.howstuffworks.com/electromagnet.htm http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/elemag.html
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I assumed that slung peace would come out first because it is a nonmagnetic material‚ which will not create any magnetic induction‚ and magnetic forced will not act; it neither oppose nor support slung motion through the metal tube. However‚ a piece of the magnet crates magnetic force with the metal tube. Falling of the magnetic piece creates magnetic force‚ which oppose the magnetic piece’s motion‚ causing it fall slowly through the metal tubes. In the following experiment‚ a single magnet (60g)
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=τ θ Δ I = r2dm W= τ· dθ rotational k.e. K =½ 2 Iω angular momentum L =mrv s θ i n L =r ×p hooke’s law F =− Δ k x L= ω I frequency 1 ƒ = T ω=2ƒ π universal gravitation Gm m Fg =− 1 2r̂ r2 gravitational field Gm g =− 2 r̂ r gravitational p.e. Gm m Ug =− 1 2 r gravitational potential Gm Vg =− r orbital speed Gm v =√ r escape speed 2 Gm v =√ r s.h.o. m T =2 √ π k simple pendulum ℓ T =2 √ π g density pressure
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The Nobel Prize in Physics 2010 was awarded jointly to: Andre Geim and Konstantin Novoselov (University of Manchester) "for groundbreaking experiments regarding the twodimensional material graphene" The rise of graphene A.K. Geim and K.S. Novoselov Nature Materials‚ vol. 6‚ March 2007 Presented by Angela Intermite Journal Club presentation 18/10/2010 Overview • Definition of graphene • History of a material that should not exist • Experimental evidence • Electronic structure • Electronic
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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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potential coil is connected in parallel. Also‚ on analog wattmeters‚ the potential coil carries a needle that moves over a scale to indicate the measurement. A current flowing through the current coil generates an electromagnetic field around the coil. The strength of this field is proportional to the line current and in phase with it. The potential coil has‚ as a general rule‚ a high-value resistor connected in series with it to reduce the current that flows through it. The result of this arrangement
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There are many functions of roller coasters such as the chain lift‚ catapult-launch lift etc. The first component is the chain lift the chain lift is a series of connected carts that move on tracks. The train has no engine nor power source the power is gravity and momentum. To build up this momentum(potential energy) the train needs to get to the top of the hill. The lifting mechanism is a long length of chain that runs up the hill under the track. The chain is a fasten loop and the chain on the
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Ebbets Field Baseball has always been something that I have loved. Whenever I get the opportunity to be around baseball I am. I enjoy every aspect of the game‚ the pastime and now. That is why I chose the piece of art I did for this paper. For my piece of artwork‚ I didn’t choose a piece of art that was extremely famous by any means. I actually chose a piece of art that most people probably don’t even know exists. The piece of art I chose was Ebbets Field Giclee on Canvas by a man named Al Sorenson
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