// Numbas version: exam_results_page_options
{"name": "Deirdre's copy of Specific heat capacity: Heat added", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"functions": {"": {"parameters": [], "type": "number", "language": "jme", "definition": ""}}, "advice": "<p>q = m * s.h.c&nbsp;&nbsp;* <span class=\"st\" data-hveid=\"41\">&Delta;</span>T</p>\n<p>Find the heat energy by substituting in&nbsp;$\\var{mass_string}*\\var{SHC_string}*\\var{Temp_diff}$</p>\n<p>Convert this to kJ by dividing by 1000.</p>\n<p></p>", "statement": "<p>How much heat (in kJ) does it take to raise the temperature of a {mass_string} sample of {Mat_string} (with a specific heat capacity of {SHC_string} J g <sup>-1</sup> K <sup>-1</sup>) from {start_temp}&nbsp;<span class=\"_Tgc\">&deg;</span>C to {end_temp} <span class=\"_Tgc\">&deg; </span>C?</p>", "preamble": {"js": "", "css": ""}, "variables": {"Temp_diff": {"description": "", "templateType": "randrange", "name": "Temp_diff", "group": "Ungrouped variables", "definition": "random(10 .. 50#1)"}, "HeatkJ": {"description": "", "templateType": "anything", "name": "HeatkJ", "group": "Ungrouped variables", "definition": "Heat/1000"}, "Mass": {"description": "", "templateType": "anything", "name": "Mass", "group": "mass", "definition": "random(5.00..300.00#1)"}, "materialnum": {"description": "", "templateType": "randrange", "name": "materialnum", "group": "Ungrouped variables", "definition": "random(0 .. 2#1)"}, "Material": {"description": "", "templateType": "anything", "name": "Material", "group": "Ungrouped variables", "definition": "['Water','Silver','Aluminium']"}, "SpecificHeat": {"description": "", "templateType": "anything", "name": "SpecificHeat", "group": "Ungrouped variables", "definition": "[4.184,0.235,0.897]"}, "mass_string": {"description": "", "templateType": "anything", "name": "mass_string", "group": "mass", "definition": "mass+'g'"}, "End_temp": {"description": "", "templateType": "anything", "name": "End_temp", "group": "Ungrouped variables", "definition": "start_temp + temp_diff"}, "Mat_string": {"description": "", "templateType": "anything", "name": "Mat_string", "group": "Ungrouped variables", "definition": "Material[materialnum]"}, "Start_temp": {"description": "", "templateType": "randrange", "name": "Start_temp", "group": "Ungrouped variables", "definition": "random(20 .. 50#1)"}, "SHC_string": {"description": "", "templateType": "anything", "name": "SHC_string", "group": "Ungrouped variables", "definition": "SpecificHeat[materialnum]"}, "Heat": {"description": "", "templateType": "anything", "name": "Heat", "group": "Ungrouped variables", "definition": "SHC_string*mass*temp_diff"}}, "variable_groups": [{"variables": ["Mass", "mass_string"], "name": "mass"}], "parts": [{"mustBeReducedPC": 0, "showCorrectAnswer": true, "mustBeReduced": false, "precisionPartialCredit": 0, "correctAnswerFraction": false, "precision": "3", "precisionMessage": "You have not given your answer to the correct precision.", "variableReplacementStrategy": "originalfirst", "minValue": "HeatkJ", "customMarkingAlgorithm": "mark:\n   apply(validNumber);\n    if(isFraction,\n        apply(cancelled)\n    ,\n        apply(correctPrecision)\n    );\n    switch(\n    studentNumber=precround(heatkJ,studentPrecision),set_credit(1,\"Correct Answer. Well Done!!\"),\n    studentNumber=precround(heat, studentPrecision),set_credit(0.7,\"Almost there, but did you check you have your answer in kJ?\"),\n set_credit(0,\"Incorrect\") \n    )", "variableReplacements": [], "unitTests": [], "scripts": {}, "adaptiveMarkingPenalty": 0, "precisionType": "dp", "extendBaseMarkingAlgorithm": true, "showPrecisionHint": true, "useCustomName": false, "type": "numberentry", "maxValue": "HeatkJ", "showFeedbackIcon": true, "strictPrecision": false, "correctAnswerStyle": "plain", "allowFractions": false, "customName": "", "notationStyles": ["plain", "en", "si-en"], "marks": "10"}], "name": "Deirdre's copy of Specific heat capacity: Heat added", "metadata": {"description": "<p>Use the specific heat capacity of an object and the change in temperature to calculate the heat added to that object.</p><p>Uses Custom marking to allow partial credit for common student errors (mal rules).</p><p><br></p><p>Thermochemistry Revision Sheet Q 5</p>", "licence": "Creative Commons Attribution 4.0 International"}, "ungrouped_variables": ["SpecificHeat", "Material", "materialnum", "Mat_string", "Heat", "SHC_string", "Temp_diff", "Start_temp", "End_temp", "HeatkJ"], "tags": [], "rulesets": {}, "extensions": [], "variablesTest": {"condition": "", "maxRuns": "1000"}, "contributors": [{"name": "Deirdre Casey", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/681/"}, {"name": "Tom Stallard", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/841/"}]}]}], "contributors": [{"name": "Deirdre Casey", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/681/"}, {"name": "Tom Stallard", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/841/"}]}