bantu 10 sama 11 ya pliis

10. B, karena Massa jenis air 1 g/cm³ sehinga benda 1 TENGGELAM & benda 2-4 MELAYANG

11. Rumusnua W = F × s
(A.) W = 30 × 12 = 360 J
(B.) W = 50 × 15 = 750 J
(C.) W = 20 × 25 = 500 J
(D.) W = 10 × 25 = 250 J

Jadi jawban nomor 11 B