Grade 11 Physics · SPH3U · nothing is recorded
Follow the joules. Count the heat tax.
1000 J enters on the left. Every stage keeps a share and sheds the rest as thermal energy — slide the shares and watch the band thin. Nothing ever disappears: the arrivals plus the heat always total 1000 J.
The books balance
- arrives at the end
- 331.2 J
- left as heat along the way
- 668.8 J
- arrives + heat
- 1000 J — always
- overall efficiency
- 33.1% = 90% × 92% × 40%
Chained efficiencies MULTIPLY — three good stages still make a mediocre chain. That’s why real systems are never 100%.
Predict, then slide
Set the sliders for a system you’re curious about, cover the readouts, and predict: how many joules reach the end?