// Numbas version: exam_results_page_options {"name": "17", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"parts": [{"steps": [{"extendBaseMarkingAlgorithm": true, "prompt": "

Transpose the formula to make L the subject. Take care to apply the transpose operation to both sides of the equation. 

\n

Substitute in the given values to calculate L. 

", "showCorrectAnswer": true, "marks": 0, "variableReplacementStrategy": "originalfirst", "customMarkingAlgorithm": "", "showFeedbackIcon": true, "variableReplacements": [], "scripts": {}, "type": "information", "unitTests": []}], "notationStyles": ["plain", "en", "si-en"], "marks": "2", "precisionPartialCredit": 0, "showFeedbackIcon": true, "mustBeReducedPC": 0, "stepsPenalty": "1", "strictPrecision": false, "correctAnswerStyle": "plain", "precision": "3", "scripts": {}, "customMarkingAlgorithm": "", "type": "numberentry", "unitTests": [], "minValue": "1.22", "precisionType": "sigfig", "showCorrectAnswer": false, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "showPrecisionHint": true, "maxValue": "1.22", "precisionMessage": "You have not given your answer to the correct precision.", "mustBeReduced": false, "extendBaseMarkingAlgorithm": true, "correctAnswerFraction": false, "allowFractions": false}], "name": "17", "variablesTest": {"maxRuns": 100, "condition": ""}, "rulesets": {}, "tags": [], "variable_groups": [], "extensions": [], "functions": {}, "metadata": {"description": "

Transpose equation

", "licence": "Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International"}, "statement": "

The critical load, P of a steel column can be obtained from

\n

$\\displaystyle P= EI \\left (\\frac{n \\pi}{L}\\right)^2$

\n

When

\n

$P = 10 \\times 10^6$

\n

$E = 0.22 \\times 10^{12}$

\n

$I = 6.85 \\times 10^{−6}$

\n

$n = 1$

\n

determine the value of $L$.

", "variables": {}, "advice": "

Transpose the formula to make L the subject. Substitute in the given values to calculate L. 

", "ungrouped_variables": [], "preamble": {"js": "", "css": ""}, "type": "question", "contributors": [{"name": "Ian Loasby", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/890/"}, {"name": "Heather Driscoll", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/1703/"}]}]}], "contributors": [{"name": "Ian Loasby", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/890/"}, {"name": "Heather Driscoll", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/1703/"}]}