五位學生用同一支直尺,分別測量同一支原子筆的長度,五位學生測量紀錄分別為14.52公分、14.53公分、20.55公分、14.55公分與14.58公分,則下列何者是此次測量紀錄,正確的原子筆長度之平均值記錄?
八上自然1-1~1-2

Quiz
•
Physics
•
8th Grade
•
Hard
白 皮
Used 18+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一塊長20公分、寬5公分、厚2公分的金屬塊,質量為540公克,如果將金屬塊截去三分之一,則剩餘部分的密度為多少g∕cm3?
2.7
1.8
0.9
3.6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一隻烏鴉想喝花瓶中的水,但嘴巴伸不進花瓶中。附近有多顆不同材質,但質量皆為10公克的金屬球,於是烏鴉將一些球放入水中,使水面上升,最後順利地喝到水。請問以下何種材質的球,可讓牠利用最少數量的金屬球喝到水?(密度:銅8.9 g/cm3;鐵7.9 g/cm3;鋁2.7 g/cm3)
鐵
銅
鋁
無論什麼材質都相同
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