Physics 12 Week 13 · Engineering Design Trade-Off Studio

Scientific scope and safety

Assume a fictional steady process with no net change in device-stored energy: E_input=E_useful+E_thermal+E_other. 'Useful' is defined by the device goal. Percentages cannot sum beyond 100%. Power is each transfer's joules divided by the SAME positive interval.

1. Choose energy pathways

My hypothesis or intended engineering purpose

Input energy 500 J

Useful output fraction 60 %

Thermal pathway fraction 25 %

Common interval duration 5 s

Import JSON

2. Energy-pathway Sankey visualization

The geometry is schematic; use the accompanying numerical readout and data table for exact quantities. Other energy remains accounted for—it is not destroyed.

3. Quantitative sensitivity chart

Fixed-input sensitivity (model-generated)
Useful (%)	Useful energy (J)	All other energy (J)

4. Four engineering constraints

Our classroom design brief requires input no more than 600 J, useful output at least 300 J, thermal transfer no more than 140 J and a completion interval no more than 8 seconds. These are illustrative mathematical constraints, NOT engineering safety ratings.

5. Evidence notebook

Saved fictional energy-system trials
#	Input J	Useful %	Thermal %	Time s	Useful J	Thermal J	Other J	Constraints

Claim, numeric evidence, design requirements and limitations

Download synthetic energy-system cases

6. Seven-round engineering challenge

Seven nonrepeating cases randomly drawn from eleven. Predict whether all four requirements are satisfied, then inspect the worked feedback.

Start a new challenge.

Score: 0 / 7