(8%) Problem 5: Suppose you have a device that extracts energy from ocean waves

Question

(8%) Problem 5: Suppose you have a device that extracts energy from ocean waves in direct proportion to their intensity If the device produces ,2 kW of power on a day when the waves are l' 15 m high, how many kilowatts will it produce when they are 0.65 m high? Grade Summary 0% 100% Potential sin cotan) atano coso asin acotan) sinh0 tano Attempts remaining I (0% per attempt) detailed view acoso ODegrees O Radians l give up! Hints:-% deduction per hint. Hints remaining:- Feedback: 0% deduction per feedback

Explanation / Answer

Power = Energy/time

E = F*x = k*x^2

Power = k*x^2/t

Power is directly prportional to square root of distance

P2/P1 = (x2/x1)^2

Using given values:

P2 = 12*(0.65/1.15)^2

P2 = 3.83 kW

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