题干
Words : Fill in the blanks with the first letter of the word given.
(1)F____ is the second month of a year.
(2)My favorite s____ is music.
(3)Can I ask you some q____ ?
(4)Come and buy your clothes at our great s____ !
(5)David asks Cindy Smith about her eating h____ .
答案(点此获取答案解析）
February,subject,questions,sale,habits
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的相同金属小球（均可视为点电荷），固定在相距为
的两处，它们间库仑力的大小为
。两小球相互接触后将其固定距离变为
，则两球间库仑力的大小为www.ks5u.com