Giraffe is the tallest animal with an average height of 4.3 meters and a blood density of about 1.05 × 103kg / m3. When the giraffe's heart contracts and presses the blood into the brain which is 3 meters higher than the heart, the pressure is at least 10%______ Pa.

Giraffe is the tallest animal with an average height of 4.3 meters and a blood density of about 1.05 × 103kg / m3. When the giraffe's heart contracts and presses the blood into the brain which is 3 meters higher than the heart, the pressure is at least 10%______ Pa.

The heart pressure decreased with the increase of blood pressure (P = ρ GH = 1.05 × 103kg / m3 × 10N / kg × 3M = 31500pa)