1.)The Speed of the blood is dependent on its pressure and flow rate. What will happen to the speed of blood if the pressure is
a. doubled
b. tripled
c. reduced to half of its normal value
2.) A certain bacteria swims with a speed of 3.5 micrometer / second. How long will it take to cross the ends of a petri dish, if the diameter of the dish is 9cm?
2007-01-14 10:29:00 · 1 answers · asked by Samlovesjesea 1 in Science & Mathematics ➔ Physics
The speed vs pressure relationship depends on whether the flow is laminar or turbulent. If the flow is laminar, velocity is directly proportional to pressure, so if pressure is doubled, velocity is doubled, etc. If the flow is turbulent (most likely in blood vessels) then the velocity is proportional to the square root of pressure, so if the pressure is doubled, the velocity increases by a factor of √2.
d = v*t, so t = d/v
2007-01-14 10:43:53 · answer #1 · answered by gp4rts 7 · 1⤊ 0⤋