You can chew through very tough objects with your incisors because they exert a large force on the small area of a pointed tooth. What pressure in Pa can you create by exerting a force of 490 N with your tooth on an area of 0.800 mm²?

Blood is flowing through an artery of radius 7 mm at a rate of 43 cm/s. Determine the flow rate and the volume (in cm³/s) that passes through the artery in a period of 25 s.flow rate cm³/svolume cm³

A major artery with a 1.1 cm² cross-sectional area branches into 18 smaller arteries, each with an average cross-sectional area of 0.4 cm². By what factor is the average velocity of the blood reduced when it passes into these branches?

v₂ = v₁

_{A submarine is stranded on the bottom of the ocean with its hatch 20.0 m below the surface. Calculate the force (in N) needed to open the hatch from the inside, given it is circular and 0.410 m in diameter. Air pressure inside the submarine is 1.00 atm.}

Assume that the left side of your heart creates a pressure of 125 mm Hg by exerting a force directly on the blood over an effective area of 16.0 cm². What force (in N) does it exert to accomplish this