<?xml version="1.0" encoding="UTF-8"?>
<quiz>
  <question type="matching">
    <name>
      <text>Identify significance of terms</text>
    </name>
    <questiontext format="html">
      <text><![CDATA[<p>The following differential equation models the behaviour of a damped-driven oscillator, where \(x\) is position and \(t\) is time.  <br />\[ \frac{\mathrm{d}^2 x}{\mathrm{d} t^2} + k \frac{\mathrm{d} x}{\mathrm{d} t} +\omega^2 x = p(t). \]<br />What is the physical significance of each term?</p><p> </p>]]></text>
    </questiontext>
    <generalfeedback format="html">
      <text/>
    </generalfeedback>
    <defaultgrade>1</defaultgrade>
    <penalty>0.3333333</penalty>
    <hidden>0</hidden>
    <idnumber/>
    <shuffleanswers>true</shuffleanswers>
    <correctfeedback format="html">
      <text><![CDATA[<p>Your answer is correct.</p>]]></text>
    </correctfeedback>
    <partiallycorrectfeedback format="html">
      <text><![CDATA[<p>Your answer is partially correct.</p>]]></text>
    </partiallycorrectfeedback>
    <incorrectfeedback format="html">
      <text><![CDATA[<p>Your answer is incorrect.</p>]]></text>
    </incorrectfeedback>
    <shownumcorrect/>
    <subquestion format="html">
      <text><![CDATA[<p>\(\frac{\mathrm{d}^2 x}{\mathrm{d} t^2} \)</p>]]></text>
      <answer>
        <text>Accelleration</text>
      </answer>
    </subquestion>
    <subquestion format="html">
      <text><![CDATA[<p>\(k \frac{\mathrm{d} x}{\mathrm{d} t}\)</p>]]></text>
      <answer>
        <text>Friction/damping</text>
      </answer>
    </subquestion>
    <subquestion format="html">
      <text><![CDATA[<p>\(\omega^2 x\) </p>]]></text>
      <answer>
        <text>Force</text>
      </answer>
    </subquestion>
    <subquestion format="html">
      <text><![CDATA[<p>\(p(t)\)</p>]]></text>
      <answer>
        <text>External forcing</text>
      </answer>
    </subquestion>
  </question>
</quiz>
