SELECT * FROM question_mgmt as q WHERE id=4224 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=8 AND subId=16 AND chapterId=192 and ex_no='2' AND status=1 ORDER BY CAST(question_no AS UNSIGNED)
Why are sound waves called mechanical waves?
Waves which need a material medium for propagation are called mechanical waves. Sound waves propagate through a medium because of the interaction of the particles present in that medium. Mechanical waves are governed by Newton’s laws of motion.
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Taking Screenshots on your Samsung Galaxy M31s is very easy and quick.
Report a problem on Specifications:
Taking Screenshots on your Samsung Galaxy M31s is very easy and quick.
Report a problem on Specifications: