2023年普通高等学校招生全国统一考试·冲刺押题卷(五)5数学试卷 答案(更新中)

2023年普通高等学校招生全国统一考试·冲刺押题卷(五)5数学试卷 答案(更新中)，目前全国100所名校答案网已经汇总了2023年普通高等学校招生全国统一考试·冲刺押题卷(五)5数学试卷 答案(更新中)的各科答案和试卷，更多全国100所名校答案请关注本网站。

短文改错Yesterday morning,I participated on a school activity who theme focused on "Green Travel Starts FrominwhoseMe".About 100 students and teachers gather at the school gate at 8:00 and we set out ten minute later togatheredminutescycle around the city.It took us over two hours A finish the 20-kilometer ride.Tiring as we were,we felt proudtoTiredofusourselvesIt was the first time that I had been covered such a long distance by bike.I believe an activity is of greatthevalue as it reminds us that everyone can make a difference to the protect of Earth by traveling in a green way.protection

1.BC【考查点】本题考查库仑定律、功能关系以及三角函数。【解析】设LA为20，轻杆长为L,对A受力分析得2k99。12 cos 0=h(2Lc0s),对B受力分析得2k9:9。9112 sin 0=h 92(2Lsin9)2,解得1=36+52，20=30°，A错误，B正确；若不断减小A、C间距，小球A、C受到的静电力合力向外做负功，B、D受到的静电922力合力向里也做负功，系统电势能增加，同理不断增大A、C间距，系统电势能依然增加，故此时系统电势能最低，C正确；由对称原理可知，当A、C的电荷量减小到1=2一时，轻杆上也无弹力，继续减小A、C的电量，轻杆上将再次出现弹力，故923√6+5该过程中轻杆的弹力（压力）将先增大再减小到零再增大（张力），D错误。