8. If a simple pendulum oscillates with small amplitude and its length is doubled, what happens to the frequency of its motion?
(A) It doubles.
(B) It becomes
times as large.
(C) It becomes half as large.
(D) It becomes 1/
times as large.
(E) It remains the same.
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統計: 尚無統計資料
統計: 尚無統計資料