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Water flows in a 2-cm-diameter pipe at 10 m=s vertically upward to the center of two horizontal circular disks separated by 8 mm. It flows out between the disks at a radius of 25 cm. Sketch the pipe/disk arrangement. Calculate average velocity of the water leaving the disks. Also, calculate the average velocity of the water between the disks at a position where the radius of the disks is 10 cm.
Mary needs to row her boat across a 190-m wide river that is flowing to the east at a speed of 1.5m/s. Mary can row with a speed of 2.0m/s. What is her speed with respect to the shore
An electron moving parallel to the x axis has an initial speed of 3.68 multiplied by 106 m/s at the origin. Calculate the potential difference between the origin and that point
a particle is to move in an xy plane clockwise around the origin as seen from the positive side of the z axis. in
A glass optical fiber (n= 1.50) is submerged inwater(n=1.33). What is the critical angle for light to stay inside the fiber
A pipe is horizontal and carries oil that has a viscosity of 0.14 Pa s. The volume flow rate of the oil is 5.7 × 10-5 m3/s. What is the absolute pressure at the input end
The 10-kg block B is supported by the 40-kg block A which is pulled up an incline by a constant 500 N force. Neglecting friction between the block and the incline and knowing that block B does not slip on block A, determine the smallest allowable ..
A 282 kg log is pulled up a ramp by means of the rope that is parallel to the surface of the ramp. The ramp is inclined at 23.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.87, and the log has..
A man working out in a gym has a metabolic rate of 2500 kJ/h. If he eliminates 0.34 kg of perspiration during that hour, find at what rate is thermal energy dissipated by evaporation of sweat
An undiscovered planet, many light years from Earth, has one moon in a periodic orbit. Calculate the moon's radial acceleration
a surveyor is using a magnetic compass 5.4 m below a power line in which there is a steady current of 110 a. what is
A string is vibrating at a frequency of 5.00Hz and the distance between two successive nodes is 0.250 m. What is the speed of the waves on the string
A pole-vaulter is nearly motionless as he clears the bar, set 4.2m above the ground. What is his acceleration as he comes to rest on the pad
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