2022英语周报八年级人教期中答案

书面表达One possible versionDear PeterI'm writing to invite you to see the Chinese Painting Exhibition to be held in our city.The exhibition will start at 8: 30 am on Saturday and last till 5: 00 pm on Sunday in the city museum It'ssaid that a large number of Chinese paintings, some of which are original works by famous painters like ZhangDaqian and Qi Baishi, will be on display. Besides, there will be various souvenirs to be sold. I know you re veryinterested in traditional Chinese culture, so I can t wait to tell you the news and hope we can go together.Looking forward to your reply.You

16.【解析】(1)线框匀速运动时,产生的电动势E=Bl1v分)由欧姆定律得I=R(1分)ab边所受的安培力F=BI(1分)由平衡条件得mg=F(1分)R联立解得v=B(1分)(2)导线框穿过磁场的过程中,通过导线框横截面的电荷量q=Tt(1分)ER(1分)E=A中_B1l2△t联立解得q=Bl,l2R(1分)(3)导线框穿过磁场的过程中,利用能量守恒定律得mg(h l2=om2 Q(1分)解得Q=mg(h l2)-B(1分)

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