21. People can snorkel down to a depth of roughly one meter. This means that the additional pressure on the air in their lungs is roughly
(A) 9800 N
(B) 9800 Pa
(C) 9800 atm
(D) 19600 N
(E) 19600

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統計: A(0), B(7), C(0), D(1), E(0) #3224667

詳解 (共 1 筆)

#6076136
pressure 有單位
壓力單位只剩(B)(C)可選
ㅤㅤ
又大約為 1立方公尺水 約為 1ton, / m2 = 103 kg * g / m2 = 9800 N / m2 = 9800 Pa (B)
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