Diagram shows a hot
air balloon which is the oldest successful human-carrying flight technology.
Rajah
menunjukkan suatu belon panas udara di mana ia merupakan teknologi kapal
terawal yang berjaya membawa manusia.
Which
pair of the density of r1 and r2 causes the hot air balloon to
rise up?
Pasangan
manakah ketumpatan r1 dan r2 menyebabkan belon udara panas itu naik?
Kunci:B
Thanks a lot to cikgu Wong Yiik Hoon who create the item.
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