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A storage tank has a diameter of 80 ft, a height of 25 feet, and contains oil to a height of 15 ft. The suction pumps, whichcan handle 15, 000 bbl/d are started, but the safety valves areclogged and a vacuum is drawn in the tank. The roof is flatand rated to withstand 1.0 oz/sq in. before collapsing. Thebarometric pressure is 30 in Hg. How long will it take thetank to collapse? What is the total force on the roof atcollapse? How would more oil in the tank have affected the collapse time?
A 36.1 ?F capacitor is connected to a 58.4 ? resistor and a generator whose RMS output is 36.6 V at 58.0 Hz. Calculate the RMS current in the circuit
You push a 2.7 kg box with a force of 23.8 N along a level floor, but a frictional force of 3.3 N opposes the motion
Determine the image distance for an object d0 = 5.100 cm from a diverging lens of radius of curvature 4.080 cm and index of refraction 1.800. What is the magnification of the object
A gardener pushes a 20kg lawnmower whose handle is tilted up 37degrees above horizontal. The lawnmower's coefficient of rolling friction is 0.20. How much power does the gardener have to supply to push the lawnmower at a constant speed of 1.4m/s ? As..
the resistivity of silver at 20 degrees C is 1.59 x 10^-8 ohms*m and it temp coefficient is 0.0061/degree C. Find resitance of silver wire at 43 degree C
What is Fx of the magnitude of the skiers velocity.
Ideal incompressible water flows through a horizontal pipe of cross-sectional area 10.0 cm^2 at a pressure of 0.250 atm with a volume flow rate of 1.00 x 10^-3 m^3/s. What is the pressure at the valve
Light from a heliom-neon laser (wavelength 632.8 nm) diffracts when incident on a hair of thickness 0.040 mm. What is the angular width of the central diffraction maximum
A 300 kg dragster accelerates from rest to a final speed of 110 m/s in 400 m (about a quarter of a mile), What is its average power output in watts and horsepower
A clamped mechanical device (such as a metal ruler) oscillates in vacuum at a frequency (assume there is no damping in this case) of 10.0 Hz. Find the characteristic decay time for the damped motion
A tightrope walker is practicing. She is balanced on a rope at the exact midpoint of the rope. What angle with the horizontal does it make
An earth satellite moves in a circular orbit with an orbital speed of 6100. Find the radial acceleration of the satellite in its orbit
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