1.
Hanzarta saboda nauyi shine 10 N/kg. Faɗin saman kifin da ruwan da ke sama ya matse shine 6 cm 2. Kayyade ƙarfin ruwa a saman kifin da ke aiki akan kifin.
An sani:
Saurin gudu saboda nauyi (g) = 10 N/kg
Faɗin saman kifi (A) = 6 cm 2 = 6 x 10 -4 m 2
Yawan ruwa = gram 1/cm 3 = 1 (10 -3 kg) / 10 -6 m 3 = 10 3 kg/m 3 = 1000 kg/m 3
Tsayin ruwa = 100 cm – 15 cm = 85 cm = mita 85 x 10 -2
Ana so: Ƙarfin ruwa a saman kifi wanda ke aiki akan kifi
Magani:
Daidaito na matsin lamba :
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. Matsakaicin matsin lamba na jini shine 80 mm Hg zuwa 120 mm Hg. Wannan ƙimar daidai take da…
A. 80 Pascal zuwa 120 Pascal
B. 800 Pascal zuwa 1200 Pascal
C. 10256 Pascal zuwa 17589 Pascal
D. 10526 Pascal zuwa 15789 Pascal
An sani:
Matsin jini na yau da kullun = 80 mm Hg – 120 mm Hg
Ana so: Wannan ƙimar daidai take da… Pascal
Magani:
Tsayin Mercury a cikin barometer (sama da saman teku) = 760 mm Hg
Matsi na iska (sama da saman teku) = 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
Amsar da ta dace ita ce D.
3. A saman teku, tsayin mercury a cikin barometer shine 760 mm. Idan a wani wuri, tsayin mercury a cikin barometer shine 700 mm. A ƙayyade matsin iska a wannan wurin.
An sani:
Tsayin Mercury a cikin barometer (sama da saman teku) = 760 mm Hg
Matsi na iska (sama da saman teku) = 1 atm = 1,013 x 10 5 Pascals
Ana so: Ƙayyade matsin lamba na iska idan tsayin mercury shine 700 mm
Magani:
760 mm Hg = 1.013 x 10 5 Pascals
700 mm Hg = …… Pascal?
