1.
Dardargelinta cufisjiidadka awgeed waa 10 N/kg. Bedka dusha sare ee kalluunka ay biyaha korkiisa ku cadaadiyeen waa 6 cm 2. Go'aami xoogga biyaha ee ka sarreeya kalluunka ee ku shaqeeya kalluunka.
La yaqaan:
Dardargelinta cufisjiidadka awgeed (g) = 10 N/kg
Baaxadda dusha sare ee kalluunka (A) = 6 cm 2 = 6 x 10 -4 m 2
Cufnaanta biyaha = 1 garaam/cm 3 = 1 (10 -3 kg) / 10 -6 m 3 = 10 3 kg/m 3 = 1000 kg/m 3
Dhererka biyaha = 100 cm – 15 cm = 85 cm = 85 x 10 -2 mitir
La Doonayo: Xoogga biyaha ee ka sarreeya kalluunka oo ku shaqeeya kalluunka
Xalka:
Isle'egta cadaadiska :
P = F / A
F = PA
F = ρ gh A
F = (1000)(10)(85 x 10 -2 )(6 x 10 -4 m 2 )
F = (10 4 )(510 x 10 -6 )
F = 510 x 10 -2
F = 5.1 Newton
2. Cadaadiska caadiga ah ee dhiiggu waa 80 mm Hg ilaa 120 mm Hg. Qiimahani wuxuu la mid yahay…
A. 80 Pascal ilaa 120 Pascal
B. 800 Pascal ilaa 1200 Pascal
C. 10256 Pascal ilaa 17589 Pascal
D. 10526 Pascal ilaa 15789 Pascal
La yaqaan:
Cadaadiska caadiga ah ee dhiigga = 80 mm Hg – 120 mm Hg
La rabay: Qiimahani wuxuu la mid yahay… Pascal
Xalka:
Dhererka meerkuriga ee barometer (ka sarreeya dusha sare ee badda) = 760 mm Hg
Cadaadiska hawada (ka sarreeya dusha sare ee badda) = 1 atm = 1.0 x 10 5 Pascals
1 mm Hg = ……. Pascal?
80 mm Hg = 80 x 131.58 Pascals = 10,526 Pascals
120 mm Hg = 120 x 131.58 Pascals = 15,789 Pascals
Jawaabta saxda ah waa D.
3. Dusha sare ee badda, dhererka meerkuriga ee barometer-ka waa 760 mm. Haddii meel la joogo, dhererka meerkuriga ee barometer-ka waa 700 mm. Go'aami cadaadiska hawada meeshaas.
La yaqaan:
Dhererka meerkuriga ee barometer (ka sarreeya dusha sare ee badda) = 760 mm Hg
Cadaadiska hawada (ka sarreeya dusha sare ee badda) = 1 atm = 1,013 x 10 5 Pascals
La rabo: Go'aami cadaadiska hawada haddii dhererka meerkurigu yahay 700 mm
Xalka:
760 mm Hg = 1.013 x 10 5 Baaskoolad
700 mm Hg = ……… Pascal?
