DP Physics (last assessment 2024)

Question 21M.1.HL.TZ2.25

Date	May 2021	Marks available	[Maximum mark: 1]	Reference code	21M.1.HL.TZ2.25
Level	HL	Paper	1	Time zone	TZ2
Command term		Question number	25	Adapted from	N/A

25.

[Maximum mark: 1]

21M.1.HL.TZ2.25

A model of an ideal wind turbine with blade length $l_{0}$ is designed to produce a power $P$ when the average wind speed is $v$ . A second ideal wind turbine is designed to produce a power $\frac{P}{2}$ when the average wind speed is $\frac{v}{2}$ . What is the blade length for the second wind turbine?

A. $\frac{l_{0}}{2}$

B. $l_{0}$

C. $2 l_{0}$

D. $4 l_{0}$

[1]

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Core » Topic 8: Energy production » 8.1 – Energy sources

Core » Topic 8: Energy production

Question 21M.1.HL.TZ2.25

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