Urgent physics questions for november

<p><a href=“Dropbox - 20131029_184722.jpg - Simplify your life”>https://www.dropbox.com/sh/vm3ccenylyxshmw/ycbYH73NnV/20131029_184722.jpg?m&lt;/a&gt;&lt;/p&gt;

<p>… ?</p>

<p><a href=“Dropbox - 20131029_184731.jpg - Simplify your life”>https://www.dropbox.com/sh/vm3ccenylyxshmw/A6qtSOGLnS/20131029_184731.jpg?m&lt;/a&gt;&lt;/p&gt;

<p>so how to we know that the force acting on both is equal so we can calc their acc ?</p>

<p><a href=“Dropbox - 20131029_184746.jpg - Simplify your life”>https://www.dropbox.com/sh/vm3ccenylyxshmw/vOpSthNIY9/20131029_184746.jpg?m&lt;/a&gt;&lt;/p&gt;

<p>Shouldn’t they have BOTH the same sign AND magnitude?!
so both answers B and D?</p>

<p><a href=“Dropbox - 20131029_184801.jpg - Simplify your life”>https://www.dropbox.com/sh/vm3ccenylyxshmw/_df6rhDWSa/20131029_184801.jpg?m&lt;/a&gt;&lt;/p&gt;

<p>When do i know if it emits a photon or undergoes nuclear fission?</p>

<p><a href=“Dropbox - 20131029_184842.jpg - Simplify your life”>https://www.dropbox.com/sh/vm3ccenylyxshmw/Uo3k6oSCsJ/20131029_184842.jpg?m&lt;/a&gt;&lt;/p&gt;

<p>why is it c?</p>

<p><a href=“Dropbox - 20131029_184857.jpg - Simplify your life”>https://www.dropbox.com/sh/vm3ccenylyxshmw/6BQOe6norj/20131029_184857.jpg?m&lt;/a&gt;&lt;/p&gt;

<p>I couldn’t solve this by (q1/r1^2)= (q2/r2^2)</p>

<p><a href=“Dropbox - 20131029_184911.jpg - Simplify your life”>https://www.dropbox.com/sh/vm3ccenylyxshmw/E8Ep58UTgu/20131029_184911.jpg?m&lt;/a&gt;&lt;/p&gt;

<p>The answer key says a but a mere application of v=d/t gets us c (my answer)</p>

<p>what did i miss?</p>

<p><a href=“Dropbox - 20131029_184921.jpg - Simplify your life”>https://www.dropbox.com/sh/vm3ccenylyxshmw/dLzDkd9nPP/20131029_184921.jpg?m&lt;/a&gt;&lt;/p&gt;

<p>why b?</p>

<p><a href=“Dropbox - 20131029_184935.jpg - Simplify your life”>https://www.dropbox.com/sh/vm3ccenylyxshmw/GCucSa9F3a/20131029_184935.jpg?m&lt;/a&gt;&lt;/p&gt;

<p>okay so all i know is that in chem we took that if the atom were a football field, the nucleus would be a pea in the middle of that field…</p>

<p><a href=“Dropbox - 20131029_184947.jpg - Simplify your life”>https://www.dropbox.com/sh/vm3ccenylyxshmw/r3c02M3xSk/20131029_184947.jpg?m&lt;/a&gt;&lt;/p&gt;

<p>why does it have more displacement when it’s moving at constant speed rather than when it’s accelerating constantly?</p>

<p><a href=“Dropbox - 20131029_185004.jpg - Simplify your life”>https://www.dropbox.com/sh/vm3ccenylyxshmw/0Nvv4w65aN/20131029_185004.jpg?m&lt;/a&gt;&lt;/p&gt;

<p>how do we solve 71?</p>

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<p>49?</p>

<p>71.
F1—> force due to grav.
F2----> ‘’ ‘’ ‘’ elec. field</p>

<p>F1=F2
mg= elec. field strength X Q
(10^-6)X10 = 10 X Q</p>

<p>Q= 10^-6 C</p>

<p>Ch. (D)</p>

<p>Q 49</p>

<p>Calc. Acceleration,</p>

<p>a=(v-u)/t
=(100-0)/10
=10 m/s^2</p>

<p>F= ma
= 50X10
= 500 N</p>

<p>dist.= s</p>

<p>s= ut + .5 a(t^2)
=0. + .5<em>10</em>10*10
=500 m</p>

<p>Work done= F X dist.
= 500 X 500
= 2500 J</p>

<h1>44</h1>

<p>Q. 44
Nuke fission = ‘’ process in which the nucleus of a particle splits into smaller parts (lighter nuclei)‘’ <a href=“http://en.m.wikipedia.org/wiki/Nuclear_fission[/url]”>http://en.m.wikipedia.org/wiki/Nuclear_fission&lt;/a&gt;
Hydrogen has the smallest atom, so it can’t split to a smaller one.
An excited atom always attains stability by emitting energy( photon)</p>

<h1>46</h1>

<p>Ur formula is wrong.
Correct one is (q1<em>q2)/r1^2 = (q1</em>q2)/ r2^2.</p>

<h1>29</h1>

<p>Q 28</p>

<p>Use these formulas:</p>

<p>F1 X L1 = F2 X L2</p>

<p>F1 + F2 = 150</p>

<h1>26</h1>

<p>Yes …</p>

<p>These are the answers to all the questions by the one and only photon! :D</p>

<p>For anyone who cares </p>

<p><a href=“Dropbox - Error - Simplify your life”>Dropbox - Error - Simplify your life;