阿摩線上測驗
34. A block of density 800 kg/m3 floats face down in a fluid of density 1200 kg/m3. The block has height H= 6 cm. If the block is held fully submerged and then released, what is the magnitude of its initial acceleration?
(A) 2.45 m/s2
(B)19.6 m/s2
(C)0m/s2
(D)9.8 m/s2
(E) 4.9 m/s2
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統計： A(2), B(0), C(1), D(1), E(12) #3084493
統計： A(2), B(0), C(1), D(1), E(12) #3084493
