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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, which can 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. The barometric pressure is 30 in Hg. How long will it take the tank to collapse? What is the total force on the roof atcollapse? How would more oil in the tank have affected the collapse time?
An empty capacitor is capable of storing 1.0 × 10-4 J of energy when connected to a certain battery. If the distance between the plates is halved and then filled with a dielectric, how much energy could this modified capacitor store when connected..
Skater A, mass 55.0 kg, moving at 14.0 m/s bumps into stationary Skater B, mass 65.0 kg. After the collision, Skater A moves at an angle of 53.1o from her original direction, What are the final speeds of the two skaters
The velocity-time graph of part of a cyclist's trip consists of a straight line between v = 18.0 m/s at t = 13.0 s and v = 0 at t = 25.0 s
Suppose a car is traveling at +19.3 m/s, and the driver sees a traffic light turn red. What is the stopping distance of the car
An excited electron in Na atom emits radiation at a wavelength 589nm and returns to the ground state. If the mean time for the transition is 20ns, ineherent width in the emission line.
The inside diameters of the larger portions of the horizontal pipe depicted in the figure below are 2.42 cm. Determine the inside diameter of the constriction
A large circular capacitor with a radius of 5 m is separated by 3 mm of air. Suppose 9 V is placed across the capacitor. What is the charge magnitude that builds up on the two plates
Calculate the electric field at the center of a square 52.5 cm on a side if one corner is occuppied by a +45.0 uC charge and the other three are occupied by -27.0 uC charge
Lily is sprinting in a 100 m dash. at he 80 m mark her velocity is 9.5 m/s. What is the velocity of the air relative to Lily
A distant quasar is found to be moving away from the earth at 0.90 c. What is the recessional speed of the quasar as measured by astronomers in the other galaxy
Kathy tests her new sports car by racing with Stan, an experienced racer. Both start from rest, Find the distance she travels before she catches him
In 2.58 minutes, a ski lift raises four skiers at constant speed to a height of 132 m. What is the average power provided by the tension in the cable pulling the lift
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