A robotics engineer designs a robot arm that rotates 120 degrees in 0.8 seconds. How long to complete a full 360-degree rotation at the same speed?
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- Energy for Model A = 0.2 × 150 = 30 kWh
- Energy for Model B = 0.15 × 150 = 22.5 kWh
- Difference = 30 - 22.5 = <<30-22.5=7.5>>7.5 kWh
- Seconds per degree = 0.8 / 120 = 1/150 sec/degree
- Time for 360° = 360 × (1/150) = 360 / 150 = <<360/150=2.4>>2.4 seconds
- A paleobotanist finds a fossilized seed that germinated under ancient soil conditions. If the germination rate increases by 20% each year and started at 12 plants per 100 seeds, how many would germinate from 100 seeds after 3 years?
