PRINTED GUIDE COMPANION · MISSION 9
Printed-Problem Help
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Search verified question helpVIDEO HELP · TG-V9-068
Convert a Corridor Drawing to Real Length (TG-V9-068)
Use the 1 cm to 2.5 m scale to convert a 12 cm drawing into a 30 m corridor, then check in reverse.
Watch the worked exampleVIDEO HELP · TG-V9-069
Convert Real Laboratory Length to a Drawing (TG-V9-069)
Divide the real 18 m laboratory length by 2.5 m per drawing centimeter to find 7.2 cm, then multiply back to check.
Watch the worked exampleVIDEO HELP · TG-V9-070
Split a Load Between Two Supports (TG-V9-070)
Add the total and difference equations to find A = 700 N and B = 500 N, then check both load conditions.
Watch the worked exampleVIDEO HELP · TG-V9-071
Find a Truss Side with the Law of Cosines (TG-V9-071)
Use the included 60° angle and the law of cosines to find the third truss side: √97 m, about 9.85 m. Check the triangle inequality and squared result.
Watch the worked exampleVIDEO HELP · TG-V9-072
Scale Area and Volume from Length (TG-V9-072)
Triple every length uniformly, then square the scale factor for area ×9 and cube it for volume ×27. Check with a unit cube.
Watch the worked exampleVIDEO HELP · TG-V9-074
Apply a Required Safety Factor (TG-V9-074)
Multiply the expected load of 1,200 N by the required safety factor of 1.5 to find a minimum rating of 1,800 N. Check the ratio and the extra 600 N.
Watch the worked exampleVIDEO HELP · TG-V9-075
Find Slope and Describe an Association (TG-V9-075)
Calculate the slope between two observations: 6 additional re-entries over 30 index units gives 0.2 re-entries per index unit. Check the arithmetic and distinguish association from causation.
Watch the worked exampleVIDEO HELP · TG-V9-073
Resolve an Angled Load into Components (TG-V9-073)
Resolve the 1,500 N load using the angle above horizontal: cosine gives 1,149.1 N horizontally and sine gives 964.2 N vertically. Check the original magnitude.
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