During an experiment of momentum, trolley, X, of mass (2.34 ± 0.01) kg is moving away from another trolley, Y, of mass (2.561 ± 0.001) kg with a speed of (3.2 ± 0.01) ms-1. The second trolley, Y, is moving away with a speed of (2.5 ± 0.01) ms-1. What is the absolute uncertainty of the ratio of momentum of the two trolleysX/Y?
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From which metals brass is made up of?
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i dont know this answer but points is needed
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