A TEST TUBE FILLED WITH A SOLID SINKS IN A CONTAINER FILLED WITH MILK . IF WATER IS ADDED TO THE MILK, WILL THE TEST TUBE SINK NORE OR WILL IT MOVE UP IN THE CONTAINER ..................(2) A PERSON HEARS TWO SOUNDS - ONE OF 60 DB , 100 HZ AND OTHER OF 45 DB 700 HZ . WHICH SOUND WILL THE PERSON PERCEIVE TO BE LOUDER??
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