[填空题]
The lengths of the side l2sghb sq 2*k *cfim/d y/mb3;),2x9ho fsoivs of a rectanguluq0soq3 sk1pa(+.h: r cy9 ovear plate are measured, and the diagram shows the measured values with 0o3uv q sa:r.esh q9ck1o(y+ptheir 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 multipli 8r.49+k vtc.ifvbdyu* p7n3 +br kqurcation 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%. Adding the uncertainties9 + qk*p tr.8+cyb4kd.ru7nirvu3fbv gives 6%.
Post time 2024-8-21 21:38:19
