Question: A 2 0 0 g 2 0 0 g oscillator in a vacuum chamber has a frequency of 1 . 5 HzHz . When air

A 200g200g oscillator in a vacuum chamber has a frequency of 1.5 HzHz . When air is admitted, the oscillation decreases to 60%% of its initial amplitude in 50s50s.
Part A
How many oscillations will have been completed when the amplitude is 30%% of its initial value?
Express your answer as an integer.
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