A mass of 0.6 kg oscillates at the end of a 2 m long string. When the mass passes the lowest point its speed is 0.9 m/s.

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chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.

what is the question here. i think you messed up.