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An 88% efficient pump is used to transport 30-C water from a lower reservoir through an 8-cm-diameter galvanized iron pipe to a higher reservoir whose surface is 40 m above the surface of the lower one. The pipe has a total length of 200 m. Estimate the power required for a flow rate of 0.04 m3=s. What is the maximum distance from the lower reservoir that the pump can be located if the horizontal pipe is 10 m below the surface of the lower reservoir?
A spring of constant 3.00 x 10^4 N/m is between a rigid beam and the output piston of a hydraulic lever. An empty container with negligible mass sits on the input piston. The input piston has Areai and output piston has area 18 A.
The length of a simple pendulum is 0.74 m and the mass of the particle (the "bob") at the end of the cable is 0.25 kg. The pendulum is pulled away from its equilibrium position with an angle of 9.05° and released from rest. Suppose that friction can ..
The work function for a metal surface is 5.22 eV. What is the largest wavelength of light in nm that will produce photoelectrons from this surface
Two point charges totaling 7.50 µC exert a repulsive force of 0.250 N on one another when separated by 0.619 m. What is the charge on each if the force is attractive
You want to build a grandfather clock with a pendulum that has one second between its "tick" (swinging to) and its "tock" (swinging fro)
in the early 1900s robert millikan used small charged droplets of oil suspended in an electric field to make the first
A ball is thrown horizontally from an elevation of 140.0 m above ground with a speed of 20.0m/s. How long before it hits the ground and where will it be with respect to the starting point once it lands
The conductive bar is moving with a constant speed v = 6.4 m/s, the magnetic field B = 0.75T, the length of bar inside of B field l = 50cm, How much is the power of the bulb
On planet Tehar, the free-fall acceleration is the same as that on Earth, however there is also a strong downward electric field that is uniform close to the planet's surface. A 2.02 kg ball having a charge of 5.01 µC is thrown upward at a speed of 2..
a baseball is thrown from the roof of a building of height 20.6 with an initial velocity of magnitude 14.0 and directed
There is +10 charge inside a cube of size 5 centimeter. Find what additional charge must be located into the cube in order to achieve total flux 100 Nm2/C in cube
If the velocity of a 3.0 kg body changes from v1= (3.0î , 5.0j) m/s to v2= (0î, 7.0j) m/s in a time interval of 2.0s. What is the impulse delivered to the body
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