<div class="xblock xblock-public_view xblock-public_view-vertical" data-runtime-class="LmsRuntime" data-usage-id="block-v1:MITx+22.011x+3T2018+type@vertical+block@ae910e89f8c34faa8fb83a13df53dfcd" data-init="VerticalStudentView" data-runtime-version="1" data-course-id="course-v1:MITx+22.011x+3T2018" data-block-type="vertical" data-has-score="False" data-graded="True" data-request-token="adcb9a2fff1411ee9bd816fff75c5923">
<h2 class="hd hd-2 unit-title">3.2.1. Video Lecture</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+22.011x+3T2018+type@video+block@09e01327e80b489ea034751b6c54c720">
<div class="xblock xblock-public_view xblock-public_view-video xmodule_display xmodule_VideoBlock" data-runtime-class="LmsRuntime" data-usage-id="block-v1:MITx+22.011x+3T2018+type@video+block@09e01327e80b489ea034751b6c54c720" data-init="XBlockToXModuleShim" data-runtime-version="1" data-course-id="course-v1:MITx+22.011x+3T2018" data-block-type="video" data-has-score="False" data-graded="True" data-request-token="adcb9a2fff1411ee9bd816fff75c5923">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Video"}
</script>
<h3 class="hd hd-2">Video</h3>
<div
id="video_09e01327e80b489ea034751b6c54c720"
class="video closed"
data-metadata='{"speed": null, "publishCompletionUrl": "/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@video+block@09e01327e80b489ea034751b6c54c720/handler/publish_completion", "streams": "1.00:DoTt5EZBumw", "prioritizeHls": false, "completionEnabled": false, "autoAdvance": false, "captionDataDir": null, "transcriptLanguages": {"en": "English"}, "recordedYoutubeIsAvailable": true, "showCaptions": "true", "completionPercentage": 0.95, "saveStateUrl": "/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@video+block@09e01327e80b489ea034751b6c54c720/handler/xmodule_handler/save_user_state", "ytMetadataEndpoint": "", "duration": 320.19, "autohideHtml5": false, "transcriptLanguage": "en", "ytApiUrl": "https://www.youtube.com/iframe_api", "lmsRootURL": "https://openlearninglibrary.mit.edu", "sources": ["https://d2f1egay8yehza.cloudfront.net/MITx22.011x-V010500/MITx22.011x-V010500.m3u8", "https://d2f1egay8yehza.cloudfront.net/MITx22.011x-V010500_DTH.mp4"], "transcriptAvailableTranslationsUrl": "/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@video+block@09e01327e80b489ea034751b6c54c720/handler/transcript/available_translations", "savedVideoPosition": 0.0, "transcriptTranslationUrl": "/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@video+block@09e01327e80b489ea034751b6c54c720/handler/transcript/translation/__lang__", "saveStateEnabled": false, "ytTestTimeout": 1500, "poster": "https://mitx-edx-video-meta-storage.s3.amazonaws.com/media/video-images/27da57f5c2bd4cab9c2d98078b8de3f8.png?Expires=1713617778&x-amz-security-token=IQoJb3JpZ2luX2VjEOX%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCXVzLWVhc3QtMSJHMEUCIQCwckIoQzaSimDFXWvJfKaP2lV0pBqZgLfW4pzx4vugxwIgdntGfxV7AO9zjT9BAbKNx%2FuxPtAwaQLk%2F2YNXoWDqzgquwUILhADGgw4NTkyMDU2Mzc0MTEiDM1RE3uFGTVO%2FaKcayqYBenAzPsyHDOZhb6xsG1glcHy4BCjuNoSOGCkpAC4GeYjZscul6CO8503yVsNkKPwVCdwPrjqdnhCQft3Q57g89y8l%2BaPSYRAO8gdBASf0LQPMrMYyu%2F2%2FKqidJEz9NpKSIRDQSn8LuhEukN8aq83XX9tUt8ZJbkcCzLspO6eiHRXrNGSWBBt72aJqW0ZjE46U4yfOoVSV4SY4krCi7jF4%2BbFNV%2BAMBlzLwzTZXdO1ASc7bebhSI0O%2F7Pn9FY8fLQFFWrZhL8R53Yz5ImopYIZ5tEb8lsP6YM3ubStTCKGnIqWT1TYB%2FsTA5wI%2FuPK5%2BtDlJl%2BvxBZI%2B6WIYEnC7I1QC0u2hVv9h3RA7GQZ64m9MlWkpKBvGYxTzO0K%2FpxmZJORbc%2FQpssIqBY2iFChOvlZURL7sj76%2F3bUZbyPQSiJcCa3WmEKLJX0ylUaRcT93Jc6zebZqprECc4J2FBn00nC5dNyxp28ji6Wgi0Ly%2Fgh39sy%2Bt48%2BAhwTXjAS%2FMVUyYRnbm4mhWgzW3DQMO89yltoAdCV8eraN5wFfQ8Pz13v8QsH3I6vooCDmErPanj9lW2N53tApC8ayQQt%2Fi1GDGvVoctFG4JgJ1IQXwS9yDYizf9twXAQ%2FpRVoD3y9kawm3hh%2BqMbxahomXrT%2FZ3Vfl5kLHfSMJdEbtdvZ7BWaeXjlRnnfSG%2BxtI6yZJbR%2BRuTKqnRJZpRVGOMo5J1PwBMK3j5xtl3tbPVnRCQjw5oSJ7Fv0W%2F59tbX4gL1sdp4ZYMWf2Y%2Bu4uuvysi8aHcFkwAYdwhdYZ4WFhpj1X4HZm%2Bh0eKX0XyOCV2Jh2euROF%2BAUFTfWMm%2BUEM%2BbUbCQ%2BVD%2B5PZZHHkR3tcrMNZdw22kQS%2Bfm%2BGbrrP%2FyD4wou6OsQY6sQG%2FjFR8mqqMA7Y6NtmKDnFx1%2BaNaYrmFIQSf4qfCFlt13PhG%2FVLwA10zr%2BpyVxKhMxIKYMzb2PqFzXN9e%2FZmRkjVBWxfQre199XZ2xB0DYuJ0z6fB%2FIBONxVGpd3%2FivoNbuG4m8E3MXN%2FrLGTl6h64qZ4UOzYhXJhDxao0DKtM45LK8v7AM7IFuz9b5uxUfEbXXLDcGN%2FcFOXNSna%2BgWU%2FpTZDA6gvdj2g%2BlSXhRvcj%2FQE%3D&Signature=ykfhHeiSpADvWLsaZpTsvu19Slg%3D&AWSAccessKeyId=ASIA4QDFFSURX7HRVPAY", "autoplay": false, "generalSpeed": 1.0, "start": 0.0, "end": 0.0}'
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="09e01327e80b489ea034751b6c54c720"></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_09e01327e80b489ea034751b6c54c720">Downloads and transcripts</h3>
<div class="wrapper-downloads" role="region" aria-labelledby="video-download-transcripts_09e01327e80b489ea034751b6c54c720">
<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@09e01327e80b489ea034751b6c54c720/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@09e01327e80b489ea034751b6c54c720/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-runtime-class="LmsRuntime" data-usage-id="block-v1:MITx+22.011x+3T2018+type@vertical+block@87852a66e1be47da8af7afa5acdd6e50" data-init="VerticalStudentView" data-runtime-version="1" data-course-id="course-v1:MITx+22.011x+3T2018" data-block-type="vertical" data-has-score="False" data-graded="True" data-request-token="adcb9a2fff1411ee9bd816fff75c5923">
<h2 class="hd hd-2 unit-title">3.2.1. Notes & Additional Material</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+22.011x+3T2018+type@html+block@72d5980a8b9c4515b2f3d73368326f82">
<div class="xblock xblock-public_view xblock-public_view-html xmodule_display xmodule_HtmlBlock" data-runtime-class="LmsRuntime" data-usage-id="block-v1:MITx+22.011x+3T2018+type@html+block@72d5980a8b9c4515b2f3d73368326f82" data-init="XBlockToXModuleShim" data-runtime-version="1" data-course-id="course-v1:MITx+22.011x+3T2018" data-block-type="html" data-has-score="False" data-graded="True" data-request-token="adcb9a2fff1411ee9bd816fff75c5923">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "HTMLModule"}
</script>
<p><strong>Use the following links to download this lecture's notes:</strong></p>
<p><a href="/assets/courseware/v1/5bc4a5f45b9c6fb85492edaea05ea699/asset-v1:MITx+22.011x+3T2018+type@asset+block/Unit_3.2.1_required_pdf_lecture_notes_vf2.pdf" target="[object Object]">Lecture 3.2.1. [Lawson Criterion and Plasma Confinement] - Required Lecture Notes</a></p>
<p></p>
</div>
</div>
</div>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-runtime-class="LmsRuntime" data-usage-id="block-v1:MITx+22.011x+3T2018+type@vertical+block@3ef710d55f4240f09c65c1844f44573d" data-init="VerticalStudentView" data-runtime-version="1" data-course-id="course-v1:MITx+22.011x+3T2018" data-block-type="vertical" data-has-score="False" data-graded="True" data-request-token="adcb9a2fff1411ee9bd816fff75c5923">
<h2 class="hd hd-2 unit-title">3.2.1. Required Assessment</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+22.011x+3T2018+type@problem+block@f33e69df4f224fa293afa77244bc7b78">
<div class="xblock xblock-public_view xblock-public_view-problem xmodule_display xmodule_ProblemBlock" data-runtime-class="LmsRuntime" data-usage-id="block-v1:MITx+22.011x+3T2018+type@problem+block@f33e69df4f224fa293afa77244bc7b78" data-init="XBlockToXModuleShim" data-runtime-version="1" data-course-id="course-v1:MITx+22.011x+3T2018" data-block-type="problem" data-has-score="True" data-graded="True" data-request-token="adcb9a2fff1411ee9bd816fff75c5923">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Problem"}
</script>
<div id="problem_f33e69df4f224fa293afa77244bc7b78" class="problems-wrapper" role="group"
aria-labelledby="f33e69df4f224fa293afa77244bc7b78-problem-title"
data-problem-id="block-v1:MITx+22.011x+3T2018+type@problem+block@f33e69df4f224fa293afa77244bc7b78" data-url="/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@problem+block@f33e69df4f224fa293afa77244bc7b78/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="f33e69df4f224fa293afa77244bc7b78-problem-title" aria-describedby="block-v1:MITx+22.011x+3T2018+type@problem+block@f33e69df4f224fa293afa77244bc7b78-problem-progress" tabindex="-1">
Assessment 1
</h3>
<div class="problem-progress" id="block-v1:MITx+22.011x+3T2018+type@problem+block@f33e69df4f224fa293afa77244bc7b78-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_f33e69df4f224fa293afa77244bc7b78_2_1">
<fieldset aria-describedby="status_f33e69df4f224fa293afa77244bc7b78_2_1 description_f33e69df4f224fa293afa77244bc7b78_1_1">
<legend id="f33e69df4f224fa293afa77244bc7b78_2_1-legend" class="response-fieldset-legend field-group-hd">The triple product of density, temperature and confinement define what criterion for a self-sustaining fusion plasma?</legend>
<p class="question-description" id="description_f33e69df4f224fa293afa77244bc7b78_1_1"> Select only one option. </p>
<div class="field">
<input type="radio" name="input_f33e69df4f224fa293afa77244bc7b78_2_1" id="input_f33e69df4f224fa293afa77244bc7b78_2_1_choice_0" class="field-input input-radio" value="choice_0"/><label id="f33e69df4f224fa293afa77244bc7b78_2_1-choice_0-label" for="input_f33e69df4f224fa293afa77244bc7b78_2_1_choice_0" class="response-label field-label label-inline" aria-describedby="status_f33e69df4f224fa293afa77244bc7b78_2_1 description_f33e69df4f224fa293afa77244bc7b78_1_1"> Lawson criterion
</label>
</div>
<div class="field">
<input type="radio" name="input_f33e69df4f224fa293afa77244bc7b78_2_1" id="input_f33e69df4f224fa293afa77244bc7b78_2_1_choice_1" class="field-input input-radio" value="choice_1"/><label id="f33e69df4f224fa293afa77244bc7b78_2_1-choice_1-label" for="input_f33e69df4f224fa293afa77244bc7b78_2_1_choice_1" class="response-label field-label label-inline" aria-describedby="status_f33e69df4f224fa293afa77244bc7b78_2_1 description_f33e69df4f224fa293afa77244bc7b78_1_1"> Fusion criterion
</label>
</div>
<div class="field">
<input type="radio" name="input_f33e69df4f224fa293afa77244bc7b78_2_1" id="input_f33e69df4f224fa293afa77244bc7b78_2_1_choice_2" class="field-input input-radio" value="choice_2"/><label id="f33e69df4f224fa293afa77244bc7b78_2_1-choice_2-label" for="input_f33e69df4f224fa293afa77244bc7b78_2_1_choice_2" class="response-label field-label label-inline" aria-describedby="status_f33e69df4f224fa293afa77244bc7b78_2_1 description_f33e69df4f224fa293afa77244bc7b78_1_1"> Confinement criterion
</label>
</div>
<div class="field">
<input type="radio" name="input_f33e69df4f224fa293afa77244bc7b78_2_1" id="input_f33e69df4f224fa293afa77244bc7b78_2_1_choice_3" class="field-input input-radio" value="choice_3"/><label id="f33e69df4f224fa293afa77244bc7b78_2_1-choice_3-label" for="input_f33e69df4f224fa293afa77244bc7b78_2_1_choice_3" class="response-label field-label label-inline" aria-describedby="status_f33e69df4f224fa293afa77244bc7b78_2_1 description_f33e69df4f224fa293afa77244bc7b78_1_1"> Magnetic criterion
</label>
</div>
<span id="answer_f33e69df4f224fa293afa77244bc7b78_2_1"/>
</fieldset>
<div class="indicator-container">
<span class="status unanswered" id="status_f33e69df4f224fa293afa77244bc7b78_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_f33e69df4f224fa293afa77244bc7b78" >
<span class="submit-label">Submit</span>
</button>
<div class="submission-feedback" id="submission_feedback_f33e69df4f224fa293afa77244bc7b78">
<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="f33e69df4f224fa293afa77244bc7b78-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="f33e69df4f224fa293afa77244bc7b78-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="f33e69df4f224fa293afa77244bc7b78-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-1" data-id="block-v1:MITx+22.011x+3T2018+type@problem+block@045ab574e38e4358b3c4cf12afad66ed">
<div class="xblock xblock-public_view xblock-public_view-problem xmodule_display xmodule_ProblemBlock" data-runtime-class="LmsRuntime" data-usage-id="block-v1:MITx+22.011x+3T2018+type@problem+block@045ab574e38e4358b3c4cf12afad66ed" data-init="XBlockToXModuleShim" data-runtime-version="1" data-course-id="course-v1:MITx+22.011x+3T2018" data-block-type="problem" data-has-score="True" data-graded="True" data-request-token="adcb9a2fff1411ee9bd816fff75c5923">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Problem"}
</script>
<div id="problem_045ab574e38e4358b3c4cf12afad66ed" class="problems-wrapper" role="group"
aria-labelledby="045ab574e38e4358b3c4cf12afad66ed-problem-title"
data-problem-id="block-v1:MITx+22.011x+3T2018+type@problem+block@045ab574e38e4358b3c4cf12afad66ed" data-url="/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@problem+block@045ab574e38e4358b3c4cf12afad66ed/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="045ab574e38e4358b3c4cf12afad66ed-problem-title" aria-describedby="block-v1:MITx+22.011x+3T2018+type@problem+block@045ab574e38e4358b3c4cf12afad66ed-problem-progress" tabindex="-1">
Assessment 2
</h3>
<div class="problem-progress" id="block-v1:MITx+22.011x+3T2018+type@problem+block@045ab574e38e4358b3c4cf12afad66ed-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_045ab574e38e4358b3c4cf12afad66ed_2_1">
<fieldset aria-describedby="status_045ab574e38e4358b3c4cf12afad66ed_2_1 description_045ab574e38e4358b3c4cf12afad66ed_1_1">
<legend id="045ab574e38e4358b3c4cf12afad66ed_2_1-legend" class="response-fieldset-legend field-group-hd">Select a correct approximate set of Lawson criterion values from the choices below.</legend>
<p class="question-description" id="description_045ab574e38e4358b3c4cf12afad66ed_1_1">Select only one option </p>
<div class="field">
<input type="radio" name="input_045ab574e38e4358b3c4cf12afad66ed_2_1" id="input_045ab574e38e4358b3c4cf12afad66ed_2_1_choice_0" class="field-input input-radio" value="choice_0"/><label id="045ab574e38e4358b3c4cf12afad66ed_2_1-choice_0-label" for="input_045ab574e38e4358b3c4cf12afad66ed_2_1_choice_0" class="response-label field-label label-inline" aria-describedby="status_045ab574e38e4358b3c4cf12afad66ed_2_1 description_045ab574e38e4358b3c4cf12afad66ed_1_1"> n = \(10^{20}m^{-3}\), \(T = 15 keV\), \(\tau_E\) = 10 msec (or 0.01 sec)
</label>
</div>
<div class="field">
<input type="radio" name="input_045ab574e38e4358b3c4cf12afad66ed_2_1" id="input_045ab574e38e4358b3c4cf12afad66ed_2_1_choice_1" class="field-input input-radio" value="choice_1"/><label id="045ab574e38e4358b3c4cf12afad66ed_2_1-choice_1-label" for="input_045ab574e38e4358b3c4cf12afad66ed_2_1_choice_1" class="response-label field-label label-inline" aria-describedby="status_045ab574e38e4358b3c4cf12afad66ed_2_1 description_045ab574e38e4358b3c4cf12afad66ed_1_1"> n = \(10^{20}m^{-3}\), \(T = 15 keV\), \(\tau_E\) = 1 sec
</label>
</div>
<div class="field">
<input type="radio" name="input_045ab574e38e4358b3c4cf12afad66ed_2_1" id="input_045ab574e38e4358b3c4cf12afad66ed_2_1_choice_2" class="field-input input-radio" value="choice_2"/><label id="045ab574e38e4358b3c4cf12afad66ed_2_1-choice_2-label" for="input_045ab574e38e4358b3c4cf12afad66ed_2_1_choice_2" class="response-label field-label label-inline" aria-describedby="status_045ab574e38e4358b3c4cf12afad66ed_2_1 description_045ab574e38e4358b3c4cf12afad66ed_1_1"> n = \(10^{18}m^{-3}\), \(T = 5 keV\), \(\tau_E\) = 1 sec
</label>
</div>
<div class="field">
<input type="radio" name="input_045ab574e38e4358b3c4cf12afad66ed_2_1" id="input_045ab574e38e4358b3c4cf12afad66ed_2_1_choice_3" class="field-input input-radio" value="choice_3"/><label id="045ab574e38e4358b3c4cf12afad66ed_2_1-choice_3-label" for="input_045ab574e38e4358b3c4cf12afad66ed_2_1_choice_3" class="response-label field-label label-inline" aria-describedby="status_045ab574e38e4358b3c4cf12afad66ed_2_1 description_045ab574e38e4358b3c4cf12afad66ed_1_1"> n = \(10^{20}m^{-3}\), \(T = 1 eV\), \(\tau_E\) = 10 sec
</label>
</div>
<span id="answer_045ab574e38e4358b3c4cf12afad66ed_2_1"/>
</fieldset>
<div class="indicator-container">
<span class="status unanswered" id="status_045ab574e38e4358b3c4cf12afad66ed_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 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_045ab574e38e4358b3c4cf12afad66ed" >
<span class="submit-label">Submit</span>
</button>
<div class="submission-feedback" id="submission_feedback_045ab574e38e4358b3c4cf12afad66ed">
<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="045ab574e38e4358b3c4cf12afad66ed-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="045ab574e38e4358b3c4cf12afad66ed-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="045ab574e38e4358b3c4cf12afad66ed-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