Kognity IB Physics A.0 Measurements & Uncertainty (id: 709de818a)

[填空题]
The lengths of the sdx; wf0 .6+ qthbr p)oom:cw0tk 3t+iaides of a rectai,r,nvo ypj gf9tgn 8imog81 n4a*++4cxk 6zmngular plate are measured, and the diagram shows the measured valu+cozgtgny6i m +a8xn8jkm g,npi4v f,1o 49*res with their uncertainties.

What is the percentage error in the area of the plate?   %. (Remember to exclude the % symbol with your answer.)

参考答案: 6


本题详细解析:
Area involves a multiplicatigj7skofbfs t o ) sq mi:pd)*c;lo/:66xk65obon so the percentage uncertainties need to be added. Uncertainty in length is one part in 50, i.e. 2%; and in the height it is one part in 25 or 4%. pxfd 6sbs/o: 7bo)fkt5mlq 6 : i;gs6o*)kcjoAdding the uncertainties gives 6%.