如图所示,虚线区域内有垂直于纸面向里的匀强磁场,一单匝正方形导线框垂直磁场放置,框的右边与磁场边界重合,现将导线框沿纸面垂直边界拉出磁场,则此过程中穿过导线框的磁通量_________(填““增加”“减小”);若这一过程磁通量变化了0.05Wb,所用时间为0.1s,导线框中产生的感应电动势是____V
Shanghai is my father's favorite city and it's his (five)time to visit it.
Don't eat too much junk food because it's (healthy).
Helen enjoys (listen) to soft music when she is tired.
We should speak to the old people (polite).
They came up a good idea to keep their classroom clean and tidy.