[填空题]
The lengths of the sides of a rectangulavcoh+g9eqz8 fmlkq* vk8b6qr:9; 9 hl r plate 9)i3jd ipl/7kaxex*p are measured, and the diagram shows the measur* /pk9 pjxdi3 7lei)axed values 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 multiplication so the percentage uncertainties n65pmasliid nty( y v28)9 fao+eed to be added. Uncertainty in length is one part o +tlnm5a8) vy62fypid9(i a sin 50, i.e. 2%; and in the height it is one part in 25 or 4%. Adding the uncertainties gives 6%.
Post time 2024-8-21 21:38:19
