Science
Junior High
็็ง ๐
ไธธใใคใใฆใใๅ้กใงใ็ญใใใขใงใใ
ใขใฎๅฝขใ็ฅใใใใงใใๆบๆใซ่ฟใๅฝขใงใใ๏ผ๏ผ
(2)ๅณ2ใฏ,ๅคช้ฝใไธญๅฟใจใใ้ๆ,ๅฐ็,็ซ
ๆใฎๅ
ฌ่ปขใฎๆงๅญใๆจกๅผ็ใซ่กจใใใใฎใงใใใ
ใพใ,ๅณ3ใฎa, b.c ใฏใ ๅณ2ใง้ๆใ
ใข~ใจใฎใใกใใใใใซใใใจใ ๅฐ็ใใ
ๆ้ ้ก(ไธไธ,ๅทฆๅณใ้ใซ่ฆใใ)ใง่ฆใ้
ๆใฎๅฝขใ่กจใใใใฎใงใใใ
โก
ๆฅๆฌใฎใใๅฐ็นใง, 23ๆใซๆๅบงBไธญใฎๆๆPใๅไธญใใใ ใใฎๆๆPใ20ๆใซ
ๅไธญใใใฎใฏ็ดไฝๆฅๅพใใ
ๅณ2
้ ใใปใฉ
้ใซ็ด็ซ
็ซๆใฎๅ
ฌ่ปข่ป้
ๅฐ็ใฎๅ
ฌ่ปข่ป้
้ๆใฎๅ
ฌ่ปข่ป้ใ
ๅคช้ฝ
โ ๅณ2ใฎๅไฝ็ฝฎใซใใ้ๆใๅฐ็ใใ่ฆใ
ใจใ,ๅณ3ใฎa ~c ใซใชใๅฝขใซ่ฆใใไฝ็ฝฎ
ใใใใใใใฏใฉใใใ ๅณ2ใฎใข~ใจใใ
้ธใณ, ่จๅทใง็ญใใใ
ใๅฐ็ใ
ๅ
ฌ่ปขใฎๅใ
่ช่ปขใฎๅใ
็ซๆ
ๅณ3
a
Ub
C
ๅ
โกๅณ2ใฎ็ซๆใๅฐ็ใใ่ฆใใจใใใคใใฉ
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