
E1 Chpater 3 認識軌道運動
Quiz
•
Physics
•
University
•
Practice Problem
•
Hard
Cheung Man
Used 3+ times
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33 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一顆衞星看似在地面以上固定的位置靜止不動。這顆衞星的軌道週期是多少?
35分鐘
68分鐘
84分鐘
24小時
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪些有關重力勢能的敘述是正確的?
(1) 物體與行星的距離增加時,重力勢能會增加。
(2) 如果物體的質量較大,重力勢能會較大(較接近零的負數)。
(3) 如果物體移動得較快,重力勢能會較大(較接近零的負數)。
只有 (1)
只有 (3)
只有 (1) 和 (2)
只有 (2) 和 (3)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
火星的質量是6.42 x 1023 kg,半徑是3.39 x 106 m。火星表面的逃逸速度是多少?
2510 m s–1
3550 m s–1
5030 m s–1
7110 m s–1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
k 不帶單位。
k 的值不受T 和 a的單位影響。
同一關係式T2 = ka3也適用於月球的運動。
k的值視乎太陽質量的大小。
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
只有 (2)
只有 (3)
只有 (1) 和 (2)
只有 (2) 和 (3)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一顆衞星圍繞地球以半徑為R的圓周軌道運行。設M為地球的質量,求衞星的軌道週期。
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一個太空站以圓周軌道圍繞地球運行。下列哪項有關太空站的敘述是不正確的?
它一直向地球的中心點加速。
它一直處於地面上某點的正上方。
它向地球施加引力。
太空站內的太空人會感受到表觀無重狀態。
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