理化浮力練習
Quiz
•
Physics
•
KG
•
Medium
莊馥銘 莊馥銘
Used 20+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
將一個重量為W的雞蛋放入一杯清水中,雞蛋下沉至杯底,如圖13;然後在 杯中慢慢加入食鹽,直到雞蛋開始上浮,漂浮在鹽水中,如圖14;若再持 續加入食鹽,雞蛋則會浮出液面,如圖15。試問此過程中雞蛋所受的浮力B1、 B2 、B3三者的大小關係為何?
B1=B2=B3
B3>B2>B1
B1>B2=B3
B2=B3>B1
2.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
容器內裝有互不相溶的兩種液體,若將三個質量及體積皆相同的鋁塊,分別以細繩懸掛在彈簧秤 下,並使其靜止於液體中,如右圖16所示,則三個彈簧秤的讀數W1、W2、W3的大小關係為何? (細繩之重量及粗細不計)
W1=W2=W3
W1>W2=W3
W2=W3>W1
W1>W2>W3
3.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
在彈簧秤下端掛一金屬塊,此時彈簧秤讀數為270gw(如右圖17);將金屬塊的三分之二沒入裝滿水的大燒杯中,其排開的水會流入小燒杯中,若此時小燒杯 內水重為100gw(如右圖18),則此金屬塊的密度應為多少?
0.9g/cm3
1.35g/cm3
1.8g/cm3
2.7g/cm3
4.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
小明將甲物體放入水中的情形如圖所示,請問甲物體在水中所減輕的重量(W1)、甲物體的重量(W2)、甲物體所排開的水重(W3),這三者的大小關係為何?
W1=W2=W3
W1>W2>W3
W1=W2>W3
W1=W3>W2
5.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
如圖所示,在裝水的杯子中放入一冰塊,冰塊的總體積為100cm3,露 出水面的體積為20cm3。若冰塊的密度為0.9g/cm3,且不考慮冰塊融化,則 冰塊受到杯子底部的支撐力為多少?
0gw
10gw
18gw
70gw
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
一燒杯裝水放置於桌面上,將質量相同的 A、B 兩物體放入水中後的情形如圖所示, 試問 A、B 與水的密度大小關係為何?(A 浮於水面,B 沉入並靜止於燒杯底部)
B>水>A
B>A>水
水>B>A
無法判斷
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
一燒杯裝水放置於桌面上,將質量相同的 A、B 兩物體放入水中後的情形如圖所示, 試問A、B 兩物體所獲得的浮力大小關係為何?
A>B
B>A
A=B
無法判斷
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