discuss ap physics b multiple choice

<p>i think for that question it just tests your general knowledge on the average size of an atom but no clue how ure suppose to know</p>

<p>mv^2/r=GM1M2/r2 so
v=(GxM of earth/R)^.5</p>

<p>so KE=.5<em>M</em>((G*M of earth/R)^.5)^2</p>

<p>two parallel conducting plates separated by a distance d are connected to a battery of emf E. Which of the following is correct if plate separation is doubled while the battery remains connected?</p>

<p>ahhh</p>

<p>C=Ae/d
V=Q/C</p>

<p>if d=2d then C=.5C
if C decreases than V increases which is EMF</p>

<p>i think conducting plates means capacitors but im not sure??</p>

<p>wow nice how do u know all of this</p>

<p>was that right though?</p>

<p>yea it was the anwer was that it would double </p>

<p>is the mechanical work done on a gas greatest when it is an isothermal process</p>

<p>jus learned mirrors in like 30 min for the first time.</p>

<p>well when your isothermal, your internal energy doesnt change so all the work you do on the gas is equal and opposite to the heat in the system but i dont think that really explains anything lol</p>

<p>How do you do 17 on the 98 MC?</p>

<p>anyone wanna chat on aim about these quesstions</p>

<p>my aim is AJanitorsCloset</p>

<p>mirrors arent that essential rarely ttested except for plane mirrors</p>

<p>dont u just draw a vector so the answer is c</p>

<p>Why is it down though?</p>

<p>Electric fiedl points out from positive charges.</p>

<h1>41 on 1993</h1>

<p>sry bout that, im on aim express</p>

<p>how bout posting the questions i dont have the Mc questions. or is there a link i dont know about?</p>