ACT Science Practice Question #1516 (Hard (33)) | Test Citadel
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ACT Science Difficulty: Hard (33)

Digital ACT Science Practice Question #1516

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A sound tuning fork of 512 Hz was held over a cylindrical water column: - First resonance occurs at air column length L1 = 16.5 cm. - Second resonance occurs at L2 = 49.5 cm. For a tube closed at one end, the difference L2 - L1 equals:
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Consecutive resonance spacing in closed pipe = lambda / 2.

Masterclass Solution & Distractor Trap Analysis

In closed pipes, resonances occur at odd quarter-wavelengths (lambda/4, 3lambda/4). The distance between consecutive resonances is 3lambda/4 - lambda/4 = lambda/2....

Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...

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