
選修物理I-6-3
Authored by 來加 以
Physics
11th Grade
Used 1+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
已知黛氏星以橢圓軌道繞太陽公轉時,其最大速率為最小速率的3倍,則黛氏星在遠日點與近日點處,與太陽間距離的比值為何?
1
3
9
27
81
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
已知地球表面的重力加速度量值為g,地球半徑R。地球的人造衛星離地球表面距離為地球的半徑的兩倍(h=2R,人造衛星公轉半徑為3R),衛星沿圓形軌道運行的速度為v,則此三個物理量的關係為何?
v = √(gR)
v = √(gR/2)
v = √(gR/3)
v = √(gR/4)
v = √(gR/6)
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
如果萬有引力定律中兩質點間引力的大小與其距離的n次方(n ≠ 2)成反比,考慮一群以圓形軌道繞行同一恆星的行星,設各行星的週期與其軌道半徑的3次方成正比,則n的值應為何?
1
3/2
5/2
3
5
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
假設地球繞日軌道為圓形,其繞日公轉半徑為r,繞日公轉速率為v。且地球為正球體,其球體半徑為R,地表重力加速度量值為g,則太陽對地球的質量比值為何?
(rv²)/(gR²)
(Rv²)/(gr²)
(R²v)/(r²g)
(gr²)/(R²v²)
(Rv)/g
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
小古站在半徑R之某一星球上,以速度v0鉛直向上拋一物體,經t秒後,物體落回手中,設此飛行過程之加速度不變,且量值為g,現將此球沿著星球表面將物體沿地面水平拋出,欲永使其不落回地面(如牛頓思想實驗的大砲),則拋出時的速度量值至少為何?
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