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GRE Physics Solutions
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NOW: WITH FREE PRINTABLE SOLUTIONS. See Gold Linkbar above.

Welcome to GRE Physics Solutions. This is where you'll find complete in-depth solutions to all problems from the ETS released GRE Advanced Physics Examinations.

Free solutions, always and forever. The site aims to provide the most comprehensive and easy-to-access source of solutions to released GRE Physics exams.

 

A Brief Guide to Basic Site Navigation:

1-liner: Jump directly to a particular problem via the QuickLoad bar. (On the grey bar on top of the page, you can quickly jump to a problem by selecting GRxxxx, Problem y.)

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Alternate solutions are contributed by users like you in the comments section appending each problem. Your questions pertaining to a particular problem are, in turn, answered by other users. If you find any errors or have an alternate solution you'd like to share---feel free to post a comment!

 

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Top 10 latest comments:

1 Exam GR8677; Problem 18; Page 0
Posted by Kabuto Yakushi, on 2010-09-02 09:49:11.
 
     
I just plugged the wave function into the schrodingers equation. \frac{d\psi}{dt} is obviously zero so V(x)\psi equals the second time derivative of psi time the \frac{-\hbar^2}{2m}. Solving one gets B). Thanks for the great site Yosun.    
     
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2 Exam GR8677; Problem 8; Page 0
Posted by Kabuto Yakushi, on 2010-09-02 09:25:45.
 
     
Just use the Impulse-Momentum theorem. F \Deltat = M \DeltaV the answer falls out.    
     
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3 Exam GR9277; Problem 19; Page 0
Posted by ashestofeonix, on 2010-08-31 01:54:18.
 
     
uhh... I hate to be a stickler about something as silly as correct units but.... the density of water is 1 g/cm, that is 1kg/dm^3... And most of the earth is not water... most of the SURFACE of the earth is covered by water, but most of the volume is iron & nickel. There really is a big difference.    
     
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4 Exam GR9277; Problem 29; Page 0
Posted by shak, on 2010-08-29 15:55:08.
 
     
right    
     
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5 Exam GR9677; Problem 91; Page 0
Posted by shak, on 2010-08-20 17:19:23.
 
     
good trap:)))    
     
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6 Exam GR8677; Problem 93; Page 0
Posted by his dudeness, on 2010-08-19 18:37:17.
 
     
Yeah I definitely fell for it too... Here's Wikipedia to the rescue: "Occasionally it is maintained that µ is always < 1, but this is not true. While in most relevant applications µ < 1, a value above 1 merely implies that the force required to slide an object along the surface is greater than the normal force of the surface on the object. "    
     
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7 Exam GR9677; Problem 81; Page 0
Posted by shak, on 2010-08-19 07:02:42.
 
     
Can u please explain me, why are u dividing frequency of A4 to the frequency of D2 to find harmonics? even , if then answer is close to 6 , but it is smaller than 6, and therefore answer should be 5,i.e lowest? thank you    
     
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8 Exam GR8677; Problem 31; Page 0
Posted by his dudeness, on 2010-08-18 13:12:00.
 
     
kroner, the situation is the exact opposite of what you said. If point B has a negative voltage with respect to point A, then the electric field points from A-->B. This means that positive charges want to drop in voltage and electrons want to go up in voltage. So we need the detector to be at a negative value that's sufficiently high to stop the electron current which arises naturally (even at zero voltage). Tricky stuff!    
     
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9 Exam GR8677; Problem 1; Page 0
Posted by atp_ch, on 2010-08-17 05:43:03.
 
     
test    
     
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10 Exam GR9677; Problem 66; Page 0
Posted by shak, on 2010-08-16 21:09:25.
 
     
good analysis!!!!!thank u    
     
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