1.
A重力加速度为 10 N/kg。鱼体表面受上方水压的面积为 6 cm²。2确定作用在鱼身上的水流对鱼的力。
已知：
重力加速度 (g) = 10 N/kg
Surface area of fish (A) = 6 cm2 = 6 × 10-4 m2
密度 of water = 1 gram/cm3 = 1（10-3 kg) / 10-6 m3 = 103 千克/米3 = 1000公斤/米3
Height of water = 100 cm – 15 cm = 85 cm = 85 x 10-2 米
招聘： Force of the water above fish that acts on fish
解决方案：
方程 压力:
P=F/A
F = P A
F = ρ g h A
F = (1000)(10)(85 x 10-2)(6 x 10-4 m2)
F = (104)(510 x 10-6)
F = 510 x 10-2
F = 5.1 牛顿
2. The normal pressure of blood is 80 mm hg to 120 mm hg. This value is equal to…
A. 80 Pascal to 120 Pascal
B. 800 Pascal to 1200 Pascal
C. 10256 Pascal to 17589 Pascal
D. 10526 Pascal to 15789 Pascal
已知：
The normal pressure of blood = 80 mm Hg – 120 mm Hg
通缉： This value is equal to… Pascal
解决方案：
The height of mercury in a barometer (above the surface of the sea) = 760 mm Hg
Pressure of air (above the surface of sea) = 1 atm = 1.0 x 105 帕斯卡尔
1 mm Hg = ……. Pascal?
80 mm Hg = 80 x 131.58 Pascal = 10,526 Pascal
120 mm Hg = 120 x 131.58 Pascal = 15,789 Pascal
正确答案是D。
3. Above the surface of the sea, the height of mercury in a barometer is 760 mm. If at a place, the height of mercury in a barometer is 700 mm. Determine the pressure of air at that place.
已知：
The height of mercury in a barometer (above the surface of the sea) = 760 mm Hg
Pressure of air (above the surface of sea) = 1 atm = 1,013 x 105 帕斯卡尔
通缉： Determine the pressure of air if the height of mercury is 700 mm
解决方案：
760 mm Hg = 1.013 x 105 帕斯卡尔
700 mm Hg = ……… Pascal?
