- ¿Qué es un cami de aceleración? El carril en una autopista para el tráfico más rápido Carril de autoservicio El carril izquierdo en una intersección C Carriles adicionales en las entradas de las autopistas utilizados por los automovilistas para acelerar y unirse al flujo de tráfico
- At some point in the body an artery splits into 5 arterioles which then each split into 5 capillaries. The radil of the artery.arterioles, and capillaries are each 1 mm. 100mu m. and 10 jum, respectively. The length of each arteriole and each capillary is 1 cm and 1 pressure produced in the heart is 110 mm Hg (1.47times 10^4pa) and the pressure in the artery at the junction with the arterioles is 80 mm Hg (1.07times 10^4pa) The blood is viscous.with eta =0.004Ns/m^2 and is flowing with an average speed of 1 mm/s in the arterioles. (a) What is the volume flow rate, Q of blood in the artery? (give your answer in nano-litres per second, nL/s) Q_(artery)=square nL/s (b) What is the volume flow rate, Q of blood in each of the capillaries? (give your answer in nL/s) Q_(copillary)=square nL/s (c) How much lower is the blood pressure at the capillary end of the arteriole compared to the artery end of the arteriole? i.e what is the pressure drop along the arteriole? (keep track of the right units!) Delta P=square Pa (d) What is the pressure drop along the capillary? (keep track of the right units!) Delta P=square Pa (e) What fraction of the total blood pressure (at the exit of the heart) is lost along each mm of capillary? Give your answer as a percentage. ANSWER=square % Note: You can earn partial credit on this problem.
- 3. A runaway robotic vehicle moves 10m north, 15m west, 12 m at 30^circ W of Nand 16 m at 25^circ N of W. Find it's resulting displacement. [4]
- The "Barometric formula" relates the exponential decrease in pressure as one rises higher above the surface of the earth. Which of the following constants is most readily needed to make such a calculation? Avogadro's number, N_(A) Boltzmann's constant, kB Planck's constant, h. Fick's diffusion constant, D_(f) QUESTION 4 True or false: The density of air is higher 1 km above the surface of the earth than at sea level? True False
- QUESTION 1 Ultimately, the combination of kBT has what units? Energy, J. Force, N. Temperature, K. Number of particle, i.e . unitless Time, s.
