PHLB09H3 Final: STUDY QUESTIONS FINAL Winter 2015

Rank in order, from largest to smallest, the gravitational potential energies of the balls.

A 1>2=4>3

B. 1>2>3> 4

C. 3>2>4>1

D. 3> 2= 4>1 

E.none of these

<DIV>Aluminum has a resistivity of 2.65 x 10^-8omega<BR><BR>a) 1. 6Omega</DIV><BR><BR>
<DIV>b) 0.40 Omega</DIV><BR><BR>
<DIV>c) 0.13 Omega</DIV><BR><BR>
<DIV>d) 1.3 x 10^-2 Omega</DIV>

<p>Object A, which has amass&#160;<em>m</em>&#160;and avelocity&#160;<em>v</em>₀<imgtitle="ihatbold" src="http://www.webassign.net/images/ihatbold.gif"alt="ihatbold" />, collides head-on with object B, which has amass 2<em>m</em>&#160;and avelocity&#160;¹/₂<em>v</em>₀<imgtitle="jhatbold" src="http://www.webassign.net/images/jhatbold.gif"alt="jhatbold" />. Following the collision, object B has avelocityof&#160;¹/₄<em>v</em>₀<imgtitle="ihatbold" src="http://www.webassign.net/images/ihatbold.gif"alt="ihatbold" /></p>
<p>.</p>
<p>&#160;</p>
<p>Express the change in the kinetic energy in termsof&#160;<em>m</em>&#160;and&#160;<em>v</em>₀.</p>