<div class="xblock xblock-public_view xblock-public_view-vertical" data-init="VerticalStudentView" data-runtime-version="1" data-course-id="course-v1:MITx+22.011x+3T2018" data-usage-id="block-v1:MITx+22.011x+3T2018+type@vertical+block@971a72a0087e4680bcf45dc8b75ac053" data-graded="True" data-block-type="vertical" data-request-token="4400f986582811f08711128af0940f85" data-runtime-class="LmsRuntime" data-has-score="False">
<h2 class="hd hd-2 unit-title">1.1.8. Video Lecture</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+22.011x+3T2018+type@video+block@2fe3eccb2e9d4007b7b70ffe6589a9f1">
<div class="xblock xblock-public_view xblock-public_view-video xmodule_display xmodule_VideoBlock" data-init="XBlockToXModuleShim" data-runtime-version="1" data-course-id="course-v1:MITx+22.011x+3T2018" data-usage-id="block-v1:MITx+22.011x+3T2018+type@video+block@2fe3eccb2e9d4007b7b70ffe6589a9f1" data-graded="True" data-block-type="video" data-request-token="4400f986582811f08711128af0940f85" data-runtime-class="LmsRuntime" data-has-score="False">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Video"}
</script>
<h3 class="hd hd-2">Video</h3>
<div
id="video_2fe3eccb2e9d4007b7b70ffe6589a9f1"
class="video closed"
data-metadata='{"duration": 1215.59, "autoAdvance": false, "ytApiUrl": "https://www.youtube.com/iframe_api", "completionPercentage": 0.95, "saveStateUrl": "/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@video+block@2fe3eccb2e9d4007b7b70ffe6589a9f1/handler/xmodule_handler/save_user_state", "publishCompletionUrl": "/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@video+block@2fe3eccb2e9d4007b7b70ffe6589a9f1/handler/publish_completion", "captionDataDir": null, "poster": "https://mitx-edx-video-meta-storage.s3.amazonaws.com/media/video-images/149f9a042ce546ceb6db99a6d291b518.png?Expires=1751559341&x-amz-security-token=IQoJb3JpZ2luX2VjEBAaCXVzLWVhc3QtMSJHMEUCIQCFbfdTdrDVEc25NphaP%2F3Oi1S6qHVezFsBKuzKDnTSiQIgMsa78UM%2FAYkDktndNC6VUiu0uNHyejM9JuwkVBX5BnkqugUIGRAEGgw4NTkyMDU2Mzc0MTEiDCCRmx8MHhOdHEP0ISqXBffxSerd7%2B9M2dN84cxcEuQMbK4o458ZoWnkkqrvqPt4zTcBYX0pR%2BnFhDhytFnVwZhmtBLlzEPTRLVfj6DE36MkbslAXgPxnilyRxYnPTx0EgxceHisY77MzixUxMjnP81v9uoMeEKpMGEo%2FDuuLjJLEhBbFBd2l8%2FxGQWyGmIMbZUsjBqLrr%2BFLaWeBiPY6l%2BZY8%2FnujuLlSVJN7eQ3jMXZ8vq%2FehlzS%2BFj3bl8cPZmQuH4tAHVLoCbFP4HlZvz3KHaJiwB9LZ5dLAfSKoJ2ieWtJCqvdvYQyKaVDeRsRMF%2FWVENS4GUfaGWLbbKeFDl%2FGz8TXT8%2FSqwrAUyRXNh6KOczfaRdgpV9iMVYCXjSpXDnDwkgSUsMWuD%2BtXDDRyEIBIjq2EJ7zzrhIhYy%2BiXwJSon1rJogFDhg%2BenJIMYQgBPOMyI2M7TwkmLQ4LHfXPWZL149ZPsXUWRCeSGZmGHJgKxVe%2B7paLb6ImIt5gt6U%2FEYg5KujBvoToLQqhSKXOJMxh9%2FfnmtPYMvnqp8V%2Fr2cTGWUEcB0atGJiWNVirVDb4XODYAdb87i1sM9Dk3D2ZGpI3alUqCDygqj5x%2FD%2FzyOa%2F7Cm%2BxrZ3PlulwDBNuHaeXZMelNsuYt%2BbAwE9BhIVI8fjfc8q4aytjz2xebE4n9SAigPPK2aSQ%2BHMOOyD9YJQfCnZg4zA9sNfJjXmQe6p95MC7RRjSnrd4Jpx1RSIT%2FN36SP7Jh%2BFPrv8iGZrbwxs2R4fcJQFJs7uYbBLrqfv2%2Fcjl%2BCSXTlTmN9pduBCOuO89kXAHzTwDa5i%2BoA%2BaPD7%2BRoNSoE0fMqppejBOLt71PX8Mwlnvwv2gva6TlZQ0LtcWXEEAstJcPLKwoeNPRdK1mEPJwTCfwJrDBjqxAYI30TQbFknSGl8%2BdNo0xDA3EkCc1lWbd%2BfqcFgmf1jlWSmknbzWUWmSlbHialuiPlt4CcEg14rkx0A6rwdCmqR92eRxMRrygjSmomgDv2WdlRARc6T5yUPidbOqR0gpQp4UOVMCkAVkyDIbbRROU8gXkfVFTBJQiVErNZ1GFdhKMRJ0tvot23Jnl%2FPFRZ0IykN3fWHBddP5uG1l5lAshbHsS3LJsEyijt%2BZrPW8gxEyew%3D%3D&Signature=m7sYQ05JhoH8de5CAbY3edSn7J0%3D&AWSAccessKeyId=ASIA4QDFFSUR76VQCUDW", "lmsRootURL": "https://openlearninglibrary.mit.edu", "savedVideoPosition": 0.0, "recordedYoutubeIsAvailable": true, "speed": null, "start": 0.0, "completionEnabled": false, "sources": ["https://d2f1egay8yehza.cloudfront.net/MITx22.011x-V008700_DTH.mp4", "https://d2f1egay8yehza.cloudfront.net/MITx22.011x-V008700/MITx22.011x-V008700.m3u8"], "generalSpeed": 1.0, "streams": "1.00:Stbmko_s6Rg", "ytMetadataEndpoint": "", "transcriptLanguage": "en", "end": 0.0, "transcriptAvailableTranslationsUrl": "/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@video+block@2fe3eccb2e9d4007b7b70ffe6589a9f1/handler/transcript/available_translations", "saveStateEnabled": false, "showCaptions": "true", "transcriptLanguages": {"en": "English"}, "autohideHtml5": false, "prioritizeHls": false, "autoplay": false, "ytTestTimeout": 1500, "transcriptTranslationUrl": "/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@video+block@2fe3eccb2e9d4007b7b70ffe6589a9f1/handler/transcript/translation/__lang__"}'
data-bumper-metadata='null'
data-autoadvance-enabled="False"
data-poster='null'
tabindex="-1"
>
<div class="focus_grabber first"></div>
<div class="tc-wrapper">
<div class="video-wrapper">
<span tabindex="0" class="spinner" aria-hidden="false" aria-label="Loading video player"></span>
<span tabindex="-1" class="btn-play fa fa-youtube-play fa-2x is-hidden" aria-hidden="true" aria-label="Play video"></span>
<div class="video-player-pre"></div>
<div class="video-player">
<div id="2fe3eccb2e9d4007b7b70ffe6589a9f1"></div>
<h4 class="hd hd-4 video-error is-hidden">No playable video sources found.</h4>
<h4 class="hd hd-4 video-hls-error is-hidden">
Your browser does not support this video format. Try using a different browser.
</h4>
</div>
<div class="video-player-post"></div>
<div class="closed-captions"></div>
<div class="video-controls is-hidden">
<div>
<div class="vcr"><div class="vidtime">0:00 / 0:00</div></div>
<div class="secondary-controls"></div>
</div>
</div>
</div>
</div>
<div class="focus_grabber last"></div>
<h3 class="hd hd-4 downloads-heading sr" id="video-download-transcripts_2fe3eccb2e9d4007b7b70ffe6589a9f1">Downloads and transcripts</h3>
<div class="wrapper-downloads" role="region" aria-labelledby="video-download-transcripts_2fe3eccb2e9d4007b7b70ffe6589a9f1">
<div class="wrapper-download-transcripts">
<h4 class="hd hd-5">Transcripts</h4>
<ul class="list-download-transcripts">
<li class="transcript-option">
<a class="btn btn-link" href="/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@video+block@2fe3eccb2e9d4007b7b70ffe6589a9f1/handler/transcript/download" data-value="srt">Download SubRip (.srt) file</a>
</li>
<li class="transcript-option">
<a class="btn btn-link" href="/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@video+block@2fe3eccb2e9d4007b7b70ffe6589a9f1/handler/transcript/download" data-value="txt">Download Text (.txt) file</a>
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-init="VerticalStudentView" data-runtime-version="1" data-course-id="course-v1:MITx+22.011x+3T2018" data-usage-id="block-v1:MITx+22.011x+3T2018+type@vertical+block@54ece64dd85041b9aad233c97ff6df8d" data-graded="True" data-block-type="vertical" data-request-token="4400f986582811f08711128af0940f85" data-runtime-class="LmsRuntime" data-has-score="False">
<h2 class="hd hd-2 unit-title">1.1.8. Required Assessment</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+22.011x+3T2018+type@html+block@15574ef9133a437ea492450078ce192e">
<div class="xblock xblock-public_view xblock-public_view-html xmodule_display xmodule_HtmlBlock" data-init="XBlockToXModuleShim" data-runtime-version="1" data-course-id="course-v1:MITx+22.011x+3T2018" data-usage-id="block-v1:MITx+22.011x+3T2018+type@html+block@15574ef9133a437ea492450078ce192e" data-graded="True" data-block-type="html" data-request-token="4400f986582811f08711128af0940f85" data-runtime-class="LmsRuntime" data-has-score="False">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "HTMLModule"}
</script>
<p>You can access the KAERI Table of Nuclides <a href="http://atom.kaeri.re.kr:8080/" target="[object Object]">here</a></p>
</div>
</div>
<div class="vert vert-1" data-id="block-v1:MITx+22.011x+3T2018+type@problem+block@4669878c188d4c26a59e1bda81322987">
<div class="xblock xblock-public_view xblock-public_view-problem xmodule_display xmodule_ProblemBlock" data-init="XBlockToXModuleShim" data-runtime-version="1" data-course-id="course-v1:MITx+22.011x+3T2018" data-usage-id="block-v1:MITx+22.011x+3T2018+type@problem+block@4669878c188d4c26a59e1bda81322987" data-graded="True" data-block-type="problem" data-request-token="4400f986582811f08711128af0940f85" data-runtime-class="LmsRuntime" data-has-score="True">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Problem"}
</script>
<div id="problem_4669878c188d4c26a59e1bda81322987" class="problems-wrapper" role="group"
aria-labelledby="4669878c188d4c26a59e1bda81322987-problem-title"
data-problem-id="block-v1:MITx+22.011x+3T2018+type@problem+block@4669878c188d4c26a59e1bda81322987" data-url="/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@problem+block@4669878c188d4c26a59e1bda81322987/handler/xmodule_handler"
data-problem-score="0"
data-problem-total-possible="1"
data-attempts-used="0"
data-content="
<h3 class="hd hd-3 problem-header" id="4669878c188d4c26a59e1bda81322987-problem-title" aria-describedby="block-v1:MITx+22.011x+3T2018+type@problem+block@4669878c188d4c26a59e1bda81322987-problem-progress" tabindex="-1">
Assessment 1
</h3>
<div class="problem-progress" id="block-v1:MITx+22.011x+3T2018+type@problem+block@4669878c188d4c26a59e1bda81322987-problem-progress"></div>
<div class="problem">
<div>
<div class="wrapper-problem-response" tabindex="-1" aria-label="Question 1" role="group"><div class="choicegroup capa_inputtype" id="inputtype_4669878c188d4c26a59e1bda81322987_2_1">
<fieldset aria-describedby="status_4669878c188d4c26a59e1bda81322987_2_1 description_4669878c188d4c26a59e1bda81322987_1_1">
<legend id="4669878c188d4c26a59e1bda81322987_2_1-legend" class="response-fieldset-legend field-group-hd">Using the Table of Nuclides, answer which mode(s) of decay are observed from the radioactive decay of tritium (3H)</legend>
<p class="question-description" id="description_4669878c188d4c26a59e1bda81322987_1_1">Select all that apply </p>
<div class="field">
<input type="checkbox" name="input_4669878c188d4c26a59e1bda81322987_2_1[]" id="input_4669878c188d4c26a59e1bda81322987_2_1_choice_0" class="field-input input-checkbox" value="choice_0"/><label id="4669878c188d4c26a59e1bda81322987_2_1-choice_0-label" for="input_4669878c188d4c26a59e1bda81322987_2_1_choice_0" class="response-label field-label label-inline" aria-describedby="status_4669878c188d4c26a59e1bda81322987_2_1 description_4669878c188d4c26a59e1bda81322987_1_1"> Alpha decay
</label>
</div>
<div class="field">
<input type="checkbox" name="input_4669878c188d4c26a59e1bda81322987_2_1[]" id="input_4669878c188d4c26a59e1bda81322987_2_1_choice_1" class="field-input input-checkbox" value="choice_1"/><label id="4669878c188d4c26a59e1bda81322987_2_1-choice_1-label" for="input_4669878c188d4c26a59e1bda81322987_2_1_choice_1" class="response-label field-label label-inline" aria-describedby="status_4669878c188d4c26a59e1bda81322987_2_1 description_4669878c188d4c26a59e1bda81322987_1_1"> Beta decay
</label>
</div>
<div class="field">
<input type="checkbox" name="input_4669878c188d4c26a59e1bda81322987_2_1[]" id="input_4669878c188d4c26a59e1bda81322987_2_1_choice_2" class="field-input input-checkbox" value="choice_2"/><label id="4669878c188d4c26a59e1bda81322987_2_1-choice_2-label" for="input_4669878c188d4c26a59e1bda81322987_2_1_choice_2" class="response-label field-label label-inline" aria-describedby="status_4669878c188d4c26a59e1bda81322987_2_1 description_4669878c188d4c26a59e1bda81322987_1_1"> Gamma decay (isomeric transition, or IT)
</label>
</div>
<div class="field">
<input type="checkbox" name="input_4669878c188d4c26a59e1bda81322987_2_1[]" id="input_4669878c188d4c26a59e1bda81322987_2_1_choice_3" class="field-input input-checkbox" value="choice_3"/><label id="4669878c188d4c26a59e1bda81322987_2_1-choice_3-label" for="input_4669878c188d4c26a59e1bda81322987_2_1_choice_3" class="response-label field-label label-inline" aria-describedby="status_4669878c188d4c26a59e1bda81322987_2_1 description_4669878c188d4c26a59e1bda81322987_1_1"> Electron capture
</label>
</div>
<div class="field">
<input type="checkbox" name="input_4669878c188d4c26a59e1bda81322987_2_1[]" id="input_4669878c188d4c26a59e1bda81322987_2_1_choice_4" class="field-input input-checkbox" value="choice_4"/><label id="4669878c188d4c26a59e1bda81322987_2_1-choice_4-label" for="input_4669878c188d4c26a59e1bda81322987_2_1_choice_4" class="response-label field-label label-inline" aria-describedby="status_4669878c188d4c26a59e1bda81322987_2_1 description_4669878c188d4c26a59e1bda81322987_1_1"> Spontaneous fission
</label>
</div>
<span id="answer_4669878c188d4c26a59e1bda81322987_2_1"/>
</fieldset>
<div class="indicator-container">
<span class="status unanswered" id="status_4669878c188d4c26a59e1bda81322987_2_1" data-tooltip="Not yet answered.">
<span class="sr">unanswered</span><span class="status-icon" aria-hidden="true"/>
</span>
</div>
</div></div>
</div>
<div class="action">
<input type="hidden" name="problem_id" value="Assessment 1" />
<div class="submit-attempt-container">
<button type="button" class="submit btn-brand" data-submitting="Submitting" data-value="Submit" data-should-enable-submit-button="True" aria-describedby="submission_feedback_4669878c188d4c26a59e1bda81322987" >
<span class="submit-label">Submit</span>
</button>
<div class="submission-feedback" id="submission_feedback_4669878c188d4c26a59e1bda81322987">
<span class="sr">Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button.</span>
</div>
</div>
<div class="problem-action-buttons-wrapper">
</div>
</div>
<div class="notification warning notification-gentle-alert
is-hidden"
tabindex="-1">
<span class="icon fa fa-exclamation-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="4669878c188d4c26a59e1bda81322987-problem-title">
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
<div class="notification warning notification-save
is-hidden"
tabindex="-1">
<span class="icon fa fa-save" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="4669878c188d4c26a59e1bda81322987-problem-title">None
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
<div class="notification general notification-show-answer
is-hidden"
tabindex="-1">
<span class="icon fa fa-info-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="4669878c188d4c26a59e1bda81322987-problem-title">Answers are displayed within the problem
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
</div>
"
data-graded="True">
<p class="loading-spinner">
<i class="fa fa-spinner fa-pulse fa-2x fa-fw"></i>
<span class="sr">Loading…</span>
</p>
</div>
</div>
</div>
<div class="vert vert-2" data-id="block-v1:MITx+22.011x+3T2018+type@problem+block@75cbde34c1f04f2cb169021ec10b449a">
<div class="xblock xblock-public_view xblock-public_view-problem xmodule_display xmodule_ProblemBlock" data-init="XBlockToXModuleShim" data-runtime-version="1" data-course-id="course-v1:MITx+22.011x+3T2018" data-usage-id="block-v1:MITx+22.011x+3T2018+type@problem+block@75cbde34c1f04f2cb169021ec10b449a" data-graded="True" data-block-type="problem" data-request-token="4400f986582811f08711128af0940f85" data-runtime-class="LmsRuntime" data-has-score="True">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Problem"}
</script>
<div id="problem_75cbde34c1f04f2cb169021ec10b449a" class="problems-wrapper" role="group"
aria-labelledby="75cbde34c1f04f2cb169021ec10b449a-problem-title"
data-problem-id="block-v1:MITx+22.011x+3T2018+type@problem+block@75cbde34c1f04f2cb169021ec10b449a" data-url="/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@problem+block@75cbde34c1f04f2cb169021ec10b449a/handler/xmodule_handler"
data-problem-score="0"
data-problem-total-possible="2"
data-attempts-used="0"
data-content="
<h3 class="hd hd-3 problem-header" id="75cbde34c1f04f2cb169021ec10b449a-problem-title" aria-describedby="block-v1:MITx+22.011x+3T2018+type@problem+block@75cbde34c1f04f2cb169021ec10b449a-problem-progress" tabindex="-1">
Assessment 2
</h3>
<div class="problem-progress" id="block-v1:MITx+22.011x+3T2018+type@problem+block@75cbde34c1f04f2cb169021ec10b449a-problem-progress"></div>
<div class="problem">
<div>
<div class="wrapper-problem-response" tabindex="-1" aria-label="Question 1" role="group"><div id="formulaequationinput_75cbde34c1f04f2cb169021ec10b449a_2_1" class="inputtype formulaequationinput">
<div class="unanswered">
<label class="problem-group-label" for="input_75cbde34c1f04f2cb169021ec10b449a_2_1" id="label_75cbde34c1f04f2cb169021ec10b449a_2_1">Fill in the number of nucleons (first box) and the charge state including plus/minus sign (second box) from the daughter nucleus of Uranium resulting from the alpha decay of \(^{239}Pu\)</label>
<input type="text" name="input_75cbde34c1f04f2cb169021ec10b449a_2_1" id="input_75cbde34c1f04f2cb169021ec10b449a_2_1" data-input-id="75cbde34c1f04f2cb169021ec10b449a_2_1" value="" aria-describedby="status_75cbde34c1f04f2cb169021ec10b449a_2_1" size="20"/>
<span class="trailing_text" id="trailing_text_75cbde34c1f04f2cb169021ec10b449a_2_1"/>
<span class="status unanswered" id="status_75cbde34c1f04f2cb169021ec10b449a_2_1" data-tooltip="Not yet answered.">
<span class="sr">unanswered</span><span class="status-icon" aria-hidden="true"/>
</span>
<p id="answer_75cbde34c1f04f2cb169021ec10b449a_2_1" class="answer"/>
<div id="input_75cbde34c1f04f2cb169021ec10b449a_2_1_preview" class="equation">
\(\)
<img src="/static/images/spinner.bc34f953403f.gif" class="loading" alt="Loading"/>
</div>
</div>
<div class="script_placeholder" data-src="/static/js/capa/src/formula_equation_preview.b1967ab28c31.js"/>
</div></div>
<div class="wrapper-problem-response" tabindex="-1" aria-label="Question 2" role="group"><div id="formulaequationinput_75cbde34c1f04f2cb169021ec10b449a_3_1" class="inputtype formulaequationinput">
<div class="unanswered">
<input type="text" name="input_75cbde34c1f04f2cb169021ec10b449a_3_1" id="input_75cbde34c1f04f2cb169021ec10b449a_3_1" data-input-id="75cbde34c1f04f2cb169021ec10b449a_3_1" value="" aria-describedby="status_75cbde34c1f04f2cb169021ec10b449a_3_1" size="20"/>
<span class="trailing_text" id="trailing_text_75cbde34c1f04f2cb169021ec10b449a_3_1"/>
<span class="status unanswered" id="status_75cbde34c1f04f2cb169021ec10b449a_3_1" data-tooltip="Not yet answered.">
<span class="sr">unanswered</span><span class="status-icon" aria-hidden="true"/>
</span>
<p id="answer_75cbde34c1f04f2cb169021ec10b449a_3_1" class="answer"/>
<div id="input_75cbde34c1f04f2cb169021ec10b449a_3_1_preview" class="equation">
\(\)
<img src="/static/images/spinner.bc34f953403f.gif" class="loading" alt="Loading"/>
</div>
</div>
<div class="script_placeholder" data-src="/static/js/capa/src/formula_equation_preview.b1967ab28c31.js"/>
</div></div>
</div>
<div class="action">
<input type="hidden" name="problem_id" value="Assessment 2" />
<div class="submit-attempt-container">
<button type="button" class="submit btn-brand" data-submitting="Submitting" data-value="Submit" data-should-enable-submit-button="True" aria-describedby="submission_feedback_75cbde34c1f04f2cb169021ec10b449a" >
<span class="submit-label">Submit</span>
</button>
<div class="submission-feedback" id="submission_feedback_75cbde34c1f04f2cb169021ec10b449a">
<span class="sr">Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button.</span>
</div>
</div>
<div class="problem-action-buttons-wrapper">
</div>
</div>
<div class="notification warning notification-gentle-alert
is-hidden"
tabindex="-1">
<span class="icon fa fa-exclamation-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="75cbde34c1f04f2cb169021ec10b449a-problem-title">
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
<div class="notification warning notification-save
is-hidden"
tabindex="-1">
<span class="icon fa fa-save" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="75cbde34c1f04f2cb169021ec10b449a-problem-title">None
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
<div class="notification general notification-show-answer
is-hidden"
tabindex="-1">
<span class="icon fa fa-info-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="75cbde34c1f04f2cb169021ec10b449a-problem-title">Answers are displayed within the problem
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
</div>
"
data-graded="True">
<p class="loading-spinner">
<i class="fa fa-spinner fa-pulse fa-2x fa-fw"></i>
<span class="sr">Loading…</span>
</p>
</div>
</div>
</div>
<div class="vert vert-3" data-id="block-v1:MITx+22.011x+3T2018+type@problem+block@c0c80692f02f471d802e2dfd0da7675d">
<div class="xblock xblock-public_view xblock-public_view-problem xmodule_display xmodule_ProblemBlock" data-init="XBlockToXModuleShim" data-runtime-version="1" data-course-id="course-v1:MITx+22.011x+3T2018" data-usage-id="block-v1:MITx+22.011x+3T2018+type@problem+block@c0c80692f02f471d802e2dfd0da7675d" data-graded="True" data-block-type="problem" data-request-token="4400f986582811f08711128af0940f85" data-runtime-class="LmsRuntime" data-has-score="True">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Problem"}
</script>
<div id="problem_c0c80692f02f471d802e2dfd0da7675d" class="problems-wrapper" role="group"
aria-labelledby="c0c80692f02f471d802e2dfd0da7675d-problem-title"
data-problem-id="block-v1:MITx+22.011x+3T2018+type@problem+block@c0c80692f02f471d802e2dfd0da7675d" data-url="/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@problem+block@c0c80692f02f471d802e2dfd0da7675d/handler/xmodule_handler"
data-problem-score="0"
data-problem-total-possible="1"
data-attempts-used="0"
data-content="
<h3 class="hd hd-3 problem-header" id="c0c80692f02f471d802e2dfd0da7675d-problem-title" aria-describedby="block-v1:MITx+22.011x+3T2018+type@problem+block@c0c80692f02f471d802e2dfd0da7675d-problem-progress" tabindex="-1">
Assessment 3
</h3>
<div class="problem-progress" id="block-v1:MITx+22.011x+3T2018+type@problem+block@c0c80692f02f471d802e2dfd0da7675d-problem-progress"></div>
<div class="problem">
<div>
<div class="wrapper-problem-response" tabindex="-1" aria-label="Question 1" role="group"><div class="choicegroup capa_inputtype" id="inputtype_c0c80692f02f471d802e2dfd0da7675d_2_1">
<fieldset aria-describedby="status_c0c80692f02f471d802e2dfd0da7675d_2_1 description_c0c80692f02f471d802e2dfd0da7675d_1_1">
<legend id="c0c80692f02f471d802e2dfd0da7675d_2_1-legend" class="response-fieldset-legend field-group-hd">Smoke detectors which use \(^{241}Am\) as a radioactive source are quite susceptible to alarms from:</legend>
<p class="question-description" id="description_c0c80692f02f471d802e2dfd0da7675d_1_1">Choose only one option </p>
<div class="field">
<input type="checkbox" name="input_c0c80692f02f471d802e2dfd0da7675d_2_1[]" id="input_c0c80692f02f471d802e2dfd0da7675d_2_1_choice_0" class="field-input input-checkbox" value="choice_0"/><label id="c0c80692f02f471d802e2dfd0da7675d_2_1-choice_0-label" for="input_c0c80692f02f471d802e2dfd0da7675d_2_1_choice_0" class="response-label field-label label-inline" aria-describedby="status_c0c80692f02f471d802e2dfd0da7675d_2_1 description_c0c80692f02f471d802e2dfd0da7675d_1_1"> Heat
</label>
</div>
<div class="field">
<input type="checkbox" name="input_c0c80692f02f471d802e2dfd0da7675d_2_1[]" id="input_c0c80692f02f471d802e2dfd0da7675d_2_1_choice_1" class="field-input input-checkbox" value="choice_1"/><label id="c0c80692f02f471d802e2dfd0da7675d_2_1-choice_1-label" for="input_c0c80692f02f471d802e2dfd0da7675d_2_1_choice_1" class="response-label field-label label-inline" aria-describedby="status_c0c80692f02f471d802e2dfd0da7675d_2_1 description_c0c80692f02f471d802e2dfd0da7675d_1_1"> Light
</label>
</div>
<div class="field">
<input type="checkbox" name="input_c0c80692f02f471d802e2dfd0da7675d_2_1[]" id="input_c0c80692f02f471d802e2dfd0da7675d_2_1_choice_2" class="field-input input-checkbox" value="choice_2"/><label id="c0c80692f02f471d802e2dfd0da7675d_2_1-choice_2-label" for="input_c0c80692f02f471d802e2dfd0da7675d_2_1_choice_2" class="response-label field-label label-inline" aria-describedby="status_c0c80692f02f471d802e2dfd0da7675d_2_1 description_c0c80692f02f471d802e2dfd0da7675d_1_1"> Dust
</label>
</div>
<div class="field">
<input type="checkbox" name="input_c0c80692f02f471d802e2dfd0da7675d_2_1[]" id="input_c0c80692f02f471d802e2dfd0da7675d_2_1_choice_3" class="field-input input-checkbox" value="choice_3"/><label id="c0c80692f02f471d802e2dfd0da7675d_2_1-choice_3-label" for="input_c0c80692f02f471d802e2dfd0da7675d_2_1_choice_3" class="response-label field-label label-inline" aria-describedby="status_c0c80692f02f471d802e2dfd0da7675d_2_1 description_c0c80692f02f471d802e2dfd0da7675d_1_1"> Smoke
</label>
</div>
<span id="answer_c0c80692f02f471d802e2dfd0da7675d_2_1"/>
</fieldset>
<div class="indicator-container">
<span class="status unanswered" id="status_c0c80692f02f471d802e2dfd0da7675d_2_1" data-tooltip="Not yet answered.">
<span class="sr">unanswered</span><span class="status-icon" aria-hidden="true"/>
</span>
</div>
</div></div>
</div>
<div class="action">
<input type="hidden" name="problem_id" value="Assessment 3" />
<div class="submit-attempt-container">
<button type="button" class="submit btn-brand" data-submitting="Submitting" data-value="Submit" data-should-enable-submit-button="True" aria-describedby="submission_feedback_c0c80692f02f471d802e2dfd0da7675d" >
<span class="submit-label">Submit</span>
</button>
<div class="submission-feedback" id="submission_feedback_c0c80692f02f471d802e2dfd0da7675d">
<span class="sr">Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button.</span>
</div>
</div>
<div class="problem-action-buttons-wrapper">
</div>
</div>
<div class="notification warning notification-gentle-alert
is-hidden"
tabindex="-1">
<span class="icon fa fa-exclamation-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="c0c80692f02f471d802e2dfd0da7675d-problem-title">
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
<div class="notification warning notification-save
is-hidden"
tabindex="-1">
<span class="icon fa fa-save" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="c0c80692f02f471d802e2dfd0da7675d-problem-title">None
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
<div class="notification general notification-show-answer
is-hidden"
tabindex="-1">
<span class="icon fa fa-info-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="c0c80692f02f471d802e2dfd0da7675d-problem-title">Answers are displayed within the problem
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
</div>
"
data-graded="True">
<p class="loading-spinner">
<i class="fa fa-spinner fa-pulse fa-2x fa-fw"></i>
<span class="sr">Loading…</span>
</p>
</div>
</div>
</div>
</div>
</div>
© All Rights Reserved