Subject :NSO Class : Class 8
Subject :NSO Class : Class 8
Ans 2:
Class : Class 9
it's vacuum
because sound needs a medium to travel through
and their is no medium in the vacuum
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Subject :NSO Class : Class 7
Ans 1:
Class : Class 7
Sound travels 4times faster in water than in air. So, air travels fastest in liquids
Ans 5:
Class : Class 7
Sound cannot travel through VACUUM 'cause there are no air particles to transfer the vibrations. it can travel through SOLIDS,LIQUIDS and GASES. It travels the fastest in SOLIDS
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Subject :NSO Class : Class 7
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Subject :NSO Class : Class 7
Ans 2:
Ans 5:
Class : Class 8
acid Croce metal only one acid is there which stored in plastic it is hydrofluoric acid
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Subject :NSO Class : Class 3