็นใจ็นใฎ้้ใๅบใใปใฉ็ฉไฝใฎ้ใใ้ใใฆใ็นใจ็นใฎ้้ใ็ญใใปใฉ็ฉไฝใฎ้ใใฏ้
ใใชใใพใ๏ผ
็นใจ็นใฎ้้ใงใ็ฉไฝใใฉใใใใใฎ้ใใง้ๅใใฆใใใฎใใๅใใใพใใ
Science
Junior High
่ณๆฅ๐โโ๏ธ๐โโ๏ธ๐โโ๏ธ
(1)ใฏ่ท้ขใ ใจๆใฃใใฎใงใใใชใ้ใใชใฎใงใใ๏ผ
ไฝใไธใๅฐ่ปใฎ้ๅใ ใฆ 50ใใใจใซ
ใใ่จ้ฒใฟใคใใผใง่จ้ฒใใใ ๅณ
่ผใฏ็พ
~* ใฎใจใใฎใใผใใฎไธ ไธ้จใงใใ, 1
4ไธCใฎ่จไธใใคใ, ็นOใ
ใใฎ้ทใใ็คบ
ใใใใฎใงใใใ ใใใซใคใใฆ, ๆฌกใฎ่ใใซ็ญใใชใใ
5ๆฎบ็นใฉใจใฎใใผใใฎ้ทใใฏ, ใใฎใจใพใใฎๅฐ่ปใฎไฝใ่กจใใฆใใใใ
Answers
1ๆ็นใใจใฎ้้ใ1/50็งใ ใใ5ๅใง1/10็งใซใชใใ
v๏ผm/sใ ใใๆฑใใใใใฃใฆๆใใใช๏ผ็ฅใใใใฉ
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