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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 car has 53% of its weight on its front wheels and 47% on its rear wheels, How far from the rear axle is the car's center of gravity
A diffraction grating has 3283 lines/cm. Light that contains all wavelengths between 480 and 659 nm shines on the grating
An object has an acceleration of 3.2 m/s2. At a certain instant its velocity is 9.6 m/s. Determine its velocity 2.5 second earlier
Two spectators at a soccer game in Montjuic Stadium see, and a moment later hear, the ball being kicked on the playing field. The time delay for the spectator is 0.23 s, and for spectator B it is 0.12 s.
A bag of cement of mass m is place on plank of length L. Bag is place distance L/4 from right end of plank. Plank has mass m. Determine how much must man nearest bag support
A figure skater through her finale can increase her rotation rate from an initial rate of 1.09 revolutions every 1.82 s to a final rate of 3.05 revolutions per second. If her initial moment of inertia was 4.52 kg*m2, what is her final moment of inert..
A wire loop that encloses an area of 10 cm2 has a resistance of 5 Ohms. How much charge flows past a point in the wire
(a) Find the force in the cables. (b) Find the direction and magnitude of the force exerted by the hinges on the bridge.
A virtual image of magnification +0.6667 is produced when an object is located in front of a spherical mirror. Determine what type of mirror is it
A car is driven east for a distance of 44 km, then north for 22 km, and then in a direction 26° east of north for 20 km. Determine the magnitude of the car's total displacement from its starting point
The dwarf planet Pluto has a mass of 1.2 x 10^22 kg and a radius of 1.15 x 10^6 meters. What is the value of the surface gravity of Pluto in (m/sec)/sec? How does this value compare with the Earth, which is 9.8(m/sec)/sec?
A 46.2 kg girl is standing on a 132 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. What is her velocity relative to the ice surface
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