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An aneurysm is an abnormal enlargement of a blood vessel such as the aorta. Because of an aneurysm, the normal cross-sectional area A1 of the aorta increases to a value of A2 = 1.7A1. The speed of the blood through a normal portion of the aorta is v1 =0.26 m/s. Assuming that the aorta is horizontal (the person is lying down), determine the amount by which the pressure P2 in the enlarged region exceeds the pressure P1 in the normal region.
Mary needs to row her boat across a 100-{rm m}-wide river that is flowing to the east at a speed of 1- {rm m/s}. Mary can row the boat with a speed of 2- {rm m/s} relative to the water.
the old baker bowl centerfield fence was about 408 feet from home plate. home run balls needed to be at least 35 feet
An inductor is connected in series to a 5.5 omega resistor and a 9.0 V bsttery. As soon as the circuit is closed, the current in the circuit is observed to increase from 0 to 0.32 A in 0.15s.
A hollow spherical shell with mass 1.65 rolls without slipping down a slope that makes an angle of 40.0 with the horizontal. Find the magnitude of the acceleration of the center of mass of the spherical shell
a 6.1 microc charge is placed at the origin and a -3.8 microc charge is placed at x 25 cm. at what coordinates can a
A parallel-plate air capacitor has a capacitance of 400pF and a charge of magnitude 0.150\muC on each plate. What is the surface charge density on each plate
The typical radius of an atomic nucleus is about 5.0x10-15m. The velocity of a proton is measured to an accuracy of plus or minus 1.0x104 m/s. Compute the uncertainty in position of this proton.
an experiment measures the speed of a 250-kilogram motorcycle every 2 seconds. the motorcycle moves in a straight
An engine is built to extract power from the temperature difference in the ocean. what is the maximum theoretical efficiency of such an engine
A group of college students eager to get to Floride on a spring break drove the 637 mi trip with only minimum stops. They computed their average speed for the trip to be 54.2 mi/h. How many hours did the trip take?
q1. the sound level measured in a room by a person watching a movie in a home theatre system varies from 66 db during a
The surface of the Sun has a temperature of about 5918 K. Determine the total energy radiated by the Sun each day
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