| Date | May 2012 | Marks available | 1 | Reference code | 12M.1.SL.TZ2.26 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 26 | Adapted from | N/A |
Question
The blades of a certain wind turbine X have radius r. The maximum theoretical available wind power for a given wind speed is P. Another similar turbine Y has blades of radius 2r. What is the best estimate for the maximum theoretical available wind power from turbine Y?
A. 8P
B. 4P
C. \(\frac{P}{4}\)
D. \(\frac{P}{8}\)
Markscheme
B
Examiners report
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