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1. The approximate inside diameter of the aorta is 0.50 cm; that of a capillary is 10 µm. The approximate average blood flow speed is 1.0 m/s in the aorta and 1.0 cm/s in the capillaries. If all the blood in the aorta eventually flows through the capillaries, estimate the number of capillaries in the circulatory system.
2. Superman attempts to drink water through a very long vertical straw. With his great strength, he achieves maximum possible suction. The walls of the straw don't collapse.
(a) Find the maximum height through which he can lift the water?
(b) Still thirsty, the Man of Steel repeats his attempt on the Moon, which has no atmosphere. Find the difference between the water levels inside and outside the straw.
A neutral copper bar oriented horizontally moves downward through a region where there is a magnetic field out of the page. Which diagram correctly shows the distribution of charge on the bar?
An electron is accelerated through a potential difference of 3.00 V before colliding with a metal target. What minimum-wavelength light can such an electron emit
The change in entropy of 20.0 moles of ideal monatomic constant volume gas as it changes from an initial temperature 300 K to its final temperature is 200 J/K. What is the final temperature of the gas
A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experiences a constant angular acceleration of0.190 rad/s2. What is the initial angular velocity of the turbine
a uniform line charge of linear charge density l 10.0 ncm extends from x 5 m to x 8 m. the magnitude of the electric
A 15-uF capacitor is connected to a 50-V battery and becomes fully charged. What is the voltage across the capacitor's plates after the slab is inserted
Water (density = 1 x 10^3 kg/m^3) flows at 15 m/s through a pipe with radius 0.040 m. find the speed of the water flow in the pipe on the second floor
a researcher measures the concentration of advil in a patients bloodstream as a function of time making measurements
a 10 kg hollow cylindrical shell rolls on the ground at a linear velocity of 5m/s. its diameter is 50 cm. what is its total kinetic energy
In the Bohr theory of the hydrogen atom, an electron moves in acircular orbit about a proton, where the radius of the orbit is.529X10^-10meters. (a), find the electric force between the two.(b) If this force causes the centripetal acceleration of the..
A virtual image of magnification +3.0 is produced when an object is placed 7.4cm in front of a spherical mirror, Find the radius of curvature of the mirror
When solving physics problems, how do you decide whether or not to use the conservation of momentum, conservation of energy or work-energy principle? How do you identify whether or not a problem is involving conservative or non-conservative forces?
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