(a) If exactly 1.00 μg of 226Ra was used to paint the glow-in-the-dark dial of a wristwatch made in 1914, how radioactive is the watch in 1955? Express your answer in becquerels (Bq). The half-life of 226Ra is 1.60 ×× 103 years. (b) Express your answer from above in microcuries (μCi).

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