42 水的密度在哪個溫度時最大? (A)2℃ (B)3℃ (C)4℃ (D)5℃

42 水的密度在哪個溫度時最大?
(A)2℃
(B)3℃
(C)4℃
(D)5℃

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統計： A(1), B(0), C(9), D(0), E(0) #3874385

詳解 (共 1 筆)

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B1 · 2026/05/12

#7369215

水在 4℃ 時密度最大，這也是自然界中水...

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2. A block of mass m is placed on top of a light vertical spring of force constant k and pushed downward, so that the spring is compressed by x. After the block is released from rest it travels upward and then leaves the spring. To what maximum height above the point of release does it rise? (A)kx²/(mg) (B)2kx²/(mg) (C)kx²/(2mg) (D)kx²/(√2 mg) (E)√2 kx²/(mg)

42 水的密度在哪個溫度時最大?
(A)2℃
(B)3℃
(C)4℃
(D)5℃

詳解 (共 1 筆)

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