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C.TEKANAN UDARA ......................................................................................................... 25
1. Manfaat Tekanan Udara Dalam Kehidupan Sehari-Hari ........................................ 26
2. Hubungan Antara Ketinggian Tempat Dengan Tekanan Udara .............................. 27
D.TEKANAN GAS DALAM RUANG TERTUTUP ............................................................ 27
1. Manometer Zat Cair .............................................................................................. 27
2. Manometer Logam ................................................................................................. 28
E.HUKUM BOYLE ............................................................................................................... 28
RANGKUMAN ..................................................................................................................... 29
EVALUASI ........................................................................................................................... 30
BAB III ENERGI DAN USAHA ........................................................................................... 31
PETA KONSEP ..................................................................................................................... 31
A.PENGERTIAN USAHA .................................................................................................... 33
B.ENERGI DAN PERUBAHAN ENERGI ........................................................................... 34
C.BENTUK-BENTUK ENERGI ........................................................................................... 35
D.SUMBER ENERGI ............................................................................................................ 35
1. Energi Kinetik ........................................................................................................ 36
2. Energi Potensial ..................................................................................................... 37
3. Hukum Kekekalan Energi Mekanik ....................................................................... 39
E. DAYA ........................................................................................................................ 40
RANGKUMAN ..................................................................................................................... 41
EVALUASI ........................................................................................................................... 42
DAFTAR PUSTAKA ............................................................................................................ 43
SUMBER GAMBAR ............................................................................................................. 44
BIODATA PENULIS ............................................................................................................ 45
IV
