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A vertical pipe of length 1.0 meter and diameter 5.0 carries a water flow of 0.2 m3/s.Based on your gut feeling, is the pressure difference due to height greater or less than the pressure difference due to viscosity. Calculate these pressure differences due to each effect and compare.
four railroad cars each of mass 2.50 times 104 kg are coupled together and coasting along horizontal tracks at speed vi
What is the minimum initial speed of the dart if it is to hit a monkey before it hits the ground, which is 11.2 m below the initial position of the monkey, if x=50m and h=10m?
A rider on a 16 m diameter Ferris Wheel is initially at traveling at 10 m/s. The Ferris Wheel slows to rest over two complete revolutions. How long does it take for the ferris wheel to stop
The diffusion constant for the alcohol ethanol in water is 1.24 10-9 m2/s. A cylinder has a cross-sectional area of 3.95 cm2 and a length of 1.84 cm. what mass of ethanol diffuses through the cylinder
an electric dipole consists of charges e and -e separated by 0.40 nm. it is in an electric field of strength 2.50 x 106
for a nitrogen molecule in a 1.00 l cubical boxa. calculate the zpe in jmolecule and jmole.b. calculate difference in
Several bacteria are propelled by biological motors that spin hair-like flagella. A typical bacterial motor turning at a constant angular velocity has a radius of 1.22*10-8 m, and a tangential speed at the rim of 2.41*10-5 m/s.
question once ignited a small rocket motor on a space craft exerts a constant force of 10 n for 7.80 s. during the burn
A modern-day zeppelin holds 7,720 m3 of helium. Calculate its maximum payload at sea level. (Suppose the helium and air to be at 0°C and 1 atm.
A chimney sweep is climbing a long ladder that leans against the side of a house. find the displacement of her feet from the base when she has climbed twice as far
An elephant's legs have a reasonably uniform cross section from top to bottom, and they are quite long, An elephant has legs that stretch 2.3 m from its shoulders to the ground. How much time is required for one leg to swing forward after completin..
Water flows at 0.25{\rm L}/{\rm s} through a 12-m-long garden hose 2.0{\rm cm} in diameter that is lying flat on the ground. find the gauge pressure of the water where it enters the hose
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