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Per second: 500 J × 0.70 = 350 J
In 10 minutes: 350 J/s × 600 s = 210,000 J
#### 210,000
A nanotechnology engineer designs nanoparticles that absorb CO2 at a rate of 0.03 mg/cm²/min. If a filter contains 50,000 cm² of these particles, how many grams of CO2 are absorbed in 2 hours?
Rate: 0.03 mg/cm²/min × 50,000 cm² = 1,500 mg/min
In 2 hours: 1,500 mg/min × 120 min = 180,000 mg = 180 g
A venture capitalist expects a clean tech startup’s revenue to grow by 15% annually, starting at $1.2 million. What will the annual revenue be at the end of year 4, compounded annually?
\( A = 1,200,000(1 + 0.15)^4 \)
\( A = 1,200,000(1.7490) = 2,098,800 \)
#### 2,098,800
