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A farm water sprinkler is dead headed .the pipe raduis is 4 inches. The hight of the water 20 ft. the kinemitcs viscosity of the air is 1.4x10-5.air density 1.23kg/m3. water density 1000 kg/m3. What is the averge stress when the pressure drop is 38 psi over the entier lenght of the pipe?
A fisherman is reeling in afish. In 9.0 s he winds 3.5 m of fishing line onto a reel whoseradius is 2.3 cm (assumed to be constant as an approximation). Determine the angular speed of the reel
A homogeneous bar of length L can rotate on a horizontal frictionless plane around a vertical axis passing during one of its ends (moment of inertia I = ML2/3). It is at rest until a small bullet of mass m with velocity v perpendicular to the bar hit..
The lenses in the glasses have a focal length of -443 cm and are worn 2.0 cm from the eyes. How far from the eyes is the person's far point located
What is the recoil velocity of the rifle. What are the final momentum and kinetic energy of the bullet. What are the final momentum and kinetic energy of the rifle
A plane is flying southeast at 200 km/h. Suddenly, it encounters wind heading 40 degrees north of east at 35 km/h. What is the planes new velocity
A beaker contains a thick layer of oil (shown in green) of density floating on water (shown in blue), which has density . A cubical block of wood of density with side length is gently lowered into the beaker, so as not to disturb the layers of..
A 38g glass thermometer reads 20.7C before it is placed in 122mL of water. When the water and thermometer come to equilibrium, the thermometer reads 42.2C. What was the original temperature of the water?
A capacitor is charged to a potential of 12.0V and is then connected to a voltmeter having an internal resistance of 3.10M(omega) . After a time of 4.10s the voltmeter reads 3.0V . What is the capacitance? What is the time constant of the circuit?
What is the potential diffrence between two infinte parallel plates seperated by a distance d with uniform surface charge densities +s and -s, what is the voltage at positive infinity
A model of a red blood cell portrays the cell as a spherical capacitor, If an average red blood cell has a mass of 1e-12 kg, estimate the volume of the cell and thus find its surface area. The density of blood is 1100 kg/m3
A block is in equilibrium on a frictionless incline plane due to a tension force from a string that is wrapped around a pulley, find the masses m1 and m2 of the blocks
Using the Hamiltonian for the harmonic oscillator, or otherwise, show that the expectation value of the kinetic energy is equal to the expectation value of the potential energy and half that of the total energy.
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