Menene Ka'idar Gravitation ta Duniya?
Ka'idar gravitation ta duniya ko kuma kawai ka'idar gravity, tana daya daga cikin ka'idojin kimiyyar lissafi na...
Ka'idar gravitation ta duniya ko kuma kawai ka'idar gravity, tana daya daga cikin ka'idojin kimiyyar lissafi na...