平靜無風的下午,在許願池上O點丟入一枚硬幣,使水面上產生一個圓形水波,已知圓形水波的半徑每秒增加1m。若丟入硬幣前,在水面上距離O點1m及2m的P、Q兩點,分別有一片落葉,且O、P、Q在同一直線上,如附圖所示,則硬幣丟入水中3秒後,兩片落葉的距離約為多少?
B3C3波與聲音

Quiz
•
Physics, Science
•
8th Grade
•
Medium
文宏 王
Used 6+ times
FREE Resource
11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
3m
5m
6m
9m
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
以繩波產生器分別在甲、乙兩繩上製造不同的繩波,甲繩上某點振動位移與時間的關係如圖所示。已知甲繩的振動頻率小於乙繩,則下列各選項中的圖形,何者最可能表示乙繩上某點的振動情形?
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
附表為兩種動物所能聽見聲音的頻率範圍。在空氣溫度為15℃,聲波波速為34000cm/s的環境下,若發出波長為10cm,且音量足夠大的聲波,則參閱表中的資訊,下列有關此兩種動物是否能聽到此聲波的敘述何者最合理?
兩種動物都聽得到此聲波
兩種動物都聽不到此聲波
此聲波大象聽得到,而兔子聽不到
此聲波兔子聽得到,而大象聽不到
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
垃圾車收垃圾地點的順序及各站間距離如附圖所示。垃圾車每停一站便會開始播放音樂提醒附近的居民來倒垃圾,垃圾車在第1站停下來播放音樂並收垃圾,若忽略風及溫度對聲速的影響,則此時在第2站的小強與第3站的小樂聽到音樂傳來的時間差為下列何者?(當時聲速為340m/s) ?
0
1.0s
1.5s
2.0s
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
以繩波產生器製造數個連續且完全相同的繩波,繩波上某一點的振動位移與時間關係如附圖所示。若當時繩波傳播速率為2m/s,則此繩波的波長為下列何者?
4cm
10cm
0.8m
5m
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
附表中兩個音階的唱名同為Do,但中央C與高音C的頻率卻不相同。若兩者在相同條件空氣中的傳播速率相同,波長分別為λ1、λ2,則 λ1/λ2 為多少?
0.25
0.5
1
2
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
樂譜上常用 f、p 等力度記號來表示樂曲在此處的音量(響度)大小應該如何變化,此類力度記號與聲波的下列何種特性最相關?
波長
波速
頻率
振幅
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