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<h2 class="hd hd-2 unit-title">1.2.6. Video Lecture</h2>
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<h2 class="hd hd-2 unit-title">1.2.6. Required Assessment</h2>
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Assessment 1
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Assessment 2
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<h3 class="hd hd-3 problem-header" id="3de29f58a80948db9ac3f79f3709045f-problem-title" aria-describedby="block-v1:MITx+22.011x+3T2018+type@problem+block@3de29f58a80948db9ac3f79f3709045f-problem-progress" tabindex="-1">
Assessment 3
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<legend id="3de29f58a80948db9ac3f79f3709045f_2_1-legend" class="response-fieldset-legend field-group-hd">Using the decay diagram for \(^{131}I\), why do we so rarely observe a gamma ray emitted at \(85.9 keV\)?</legend>
<p class="question-description" id="description_3de29f58a80948db9ac3f79f3709045f_1_1">Select only one option </p>
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<input type="checkbox" name="input_3de29f58a80948db9ac3f79f3709045f_2_1[]" id="input_3de29f58a80948db9ac3f79f3709045f_2_1_choice_0" class="field-input input-checkbox" value="choice_0"/><label id="3de29f58a80948db9ac3f79f3709045f_2_1-choice_0-label" for="input_3de29f58a80948db9ac3f79f3709045f_2_1_choice_0" class="response-label field-label label-inline" aria-describedby="status_3de29f58a80948db9ac3f79f3709045f_2_1 description_3de29f58a80948db9ac3f79f3709045f_1_1"> It has a very low energy
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<input type="checkbox" name="input_3de29f58a80948db9ac3f79f3709045f_2_1[]" id="input_3de29f58a80948db9ac3f79f3709045f_2_1_choice_1" class="field-input input-checkbox" value="choice_1"/><label id="3de29f58a80948db9ac3f79f3709045f_2_1-choice_1-label" for="input_3de29f58a80948db9ac3f79f3709045f_2_1_choice_1" class="response-label field-label label-inline" aria-describedby="status_3de29f58a80948db9ac3f79f3709045f_2_1 description_3de29f58a80948db9ac3f79f3709045f_1_1"> It has a very low intensity
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<input type="checkbox" name="input_3de29f58a80948db9ac3f79f3709045f_2_1[]" id="input_3de29f58a80948db9ac3f79f3709045f_2_1_choice_2" class="field-input input-checkbox" value="choice_2"/><label id="3de29f58a80948db9ac3f79f3709045f_2_1-choice_2-label" for="input_3de29f58a80948db9ac3f79f3709045f_2_1_choice_2" class="response-label field-label label-inline" aria-describedby="status_3de29f58a80948db9ac3f79f3709045f_2_1 description_3de29f58a80948db9ac3f79f3709045f_1_1"> It has a very low self esteem
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<input type="checkbox" name="input_3de29f58a80948db9ac3f79f3709045f_2_1[]" id="input_3de29f58a80948db9ac3f79f3709045f_2_1_choice_3" class="field-input input-checkbox" value="choice_3"/><label id="3de29f58a80948db9ac3f79f3709045f_2_1-choice_3-label" for="input_3de29f58a80948db9ac3f79f3709045f_2_1_choice_3" class="response-label field-label label-inline" aria-describedby="status_3de29f58a80948db9ac3f79f3709045f_2_1 description_3de29f58a80948db9ac3f79f3709045f_1_1"> There is no way for that energy gamma ray to be emitted
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