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The left ventricle of the heart accelerates blood from rest to avelocity of +24cm/s.
a) If the displacement of the blood during theacceleration is +1.6 cm, determine its acceleration (incm/s2).
b) How much time does blood take to reach its final velocity?
A spherical water drop, 1.80 ?m in diameter, is suspended in calm air owing to a downward-directed atmospheric electric field E = 452 N/C. What is the weight of the drop
The total length of a bike trip is 300 km. Suppose you take this tour and your bike has wheels with a diameter of 80 cm. How many revolutions will the wheels make
A car with 68 -diameter tires accelerates uniformly from rest to 20 in 10. How many times does each tire rotate
A 2.70 kg box slides down a rough incline plane from a height h of 1.87 m. Calculate the mechanical energy lost due to friction
A racetrack has the shape of an inverted cone. On this surface the cars race in circles that are parallel to the ground, at what value of the distance d should a driver locate his car
One of the asteroids, Asty, looks like an elongated potato. Surprisingly it has a tiny (compared to Asty) spherical moon! what must your orbital speed be
A Carnot engine operating between a warmer unknown temperature and a reservoir of boiling helium at 1.76 K has an efficiency of 59% What is the warmer temperature
Your friend's mass is 70 .If she jumps off a 120--high table, how far does Earth move toward her as she falls
A horizontal 802-N merry-go-round is a solid disk of radius 1.44 m, started from rest by a constant horizontal force of 50.3 N applied tangentially to the edge of the disk
A beam of protons moves in a circle of radius 0.34 m. The protons move perpendicular to a 0.29-T magnetic field. What is the speed of each proton
The blood speed in a normal segment of a horizontal artery is 0.124 m/s. An abnormal segment of the artery is narrowed down by an arteriosclerotic plaque to 1/3 of its normal cross-sectional area. What is the difference in blood pressure between the ..
An iron wire has a cross-sectional area equal to 3.50x10^-6 m2. Carry out the following steps to determine the drift speed of the conduction electrons in the wire, Calculate the drift speed of conduction electrons in this wire
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