[填空题]
The lengths of the sides of a rectand2b*39l :bt:pd xqiec gular x o qe0d6bz.k/ n-sm7mplate are measured, and the diagram shows the measurxmmo7ksq.-z 0 d6neb/ ed 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 need to be9xlsd6;sfctx wpmk--/ wr b) idb.,1 r/w7pak added. Unce9r-p.)xbckf mlw,d ;w /p7a/ dk sw-xti6r bs1rtainty in length is one part in 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
