國中自然3上_3-1
Quiz
•
Fun
•
7th - 9th Grade
•
Practice Problem
•
Hard
Tang Da
Used 21+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列何者的作用力對「物體」沒有作功?
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
以20牛頓的水平力推10公斤重的皮箱,使皮箱在不光滑水平面上等速運動了5公尺,則水平力作功多少焦耳?
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一人把50公斤重的水桶,從井裡的水面等速提起,水面到井口的深度是6公尺,接著在水平路上等速前進14公尺,試問重力對水桶共作功多少焦耳?(設g=10 m/s2)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
同材質的甲、乙兩實心金屬球,體積甲>乙,今同時從同一高度靜止釋放,則兩球落下的距離均為20公分時,重力對甲、乙兩球所作的功W甲、W乙之大小關係,下列何者正確?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一顆芒果0.2公斤,由2公尺高的果樹上掉落到地面上,則重力對它作功多少焦耳?(1公斤重=9.8牛頓)
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一抽水機在100秒內將1000公斤重的水自地面等速抽至10公尺高的水塔內,則此抽水機對這些水作功多少焦耳?(1公斤重=9.8牛頓)
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一馬達的功率為100瓦特,其代表的意義為何?
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