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The aircraft carrier is moving at a constant speed and launches a jet plane with a mass of 3 Mg in a distance of 75 m along the deck by means of a steam-driven catapult. If the plane leaves the deck with a velocity of 240 km/h relative to the carrier and if the jet thrust is constant at 22 kN during takeoff, compute the constant force P exerted by the catapult on the airplane during the 75-m travel of the launch carriage.
Determine the force in members CD, HI, and CH of the truss, and state if the members are in tension or compression.
Suppose we want to estimate the average weight of adult males in greater metropolitan Atlanta area. We draw a random sample of 1,000 men from a population of 1,000,000 men and weigh them.
A store charges 1.25 % interest per month in credit purchases. This is equivalent to: what nominal annual interest rate, effective annual interest rate, and effective monthly interest rate?
Find the required energy input Ep and ?p to be supplied by the pump. Assume the electric motors are set to turn the centrifugal pump impeller at ? = 4000 rpm
Water enters a cylindrical tank through two pipes at rates of 250and 100 gal/min. If the level of water in the tank remains constant, calculate the average velocity of the flow leaving thetank through an 8-in. inside-diameter pipe.
A plan view of a foundation with dimensions shown in the figure, has a uniformly distributed load of 300 lb/ft^2. Find the vertical pressure at point Z which is 7 ft below.
a vertical curve on this highway connects +1% and +3% grade and is 420ft long. if a horizontal curve on highway is on a two-lane section with 12 ft lanes and has a central angle of 37 degrees and a superelevation of 6%, what is the length of the h..
An oil storage area abandoned 19 yrs ago had oil spilled on the ground and saturated the soil at a concentration of 400mg/kg of soil. A recent soil sample shows a concentration of 20mg/kg.
a piston moves a 25kg hammerhead vertically down 1m from rest to a velocity of 50m/s in a stamping machine. what is the total change in energy of the hammerhead
A rigid tank contains 40 lbm of air in 20 psia and 70 degrees F. More air is added to the tank untill the pressure and temperature rise to 35 psia and 90 degrees F, respectively.
Compute the maximum acceptable tensile service load T that may act on a single angle L6x4x3/4 that is welded along only one leg to a gusset plate; thus, there are no holes. The service load is three times the dead load. Solve for a0 A36 steel.
Discuss the dangers of optimization in terms of minimum section to support loads. In other words, how would optimizing for bending stresses affect the shear capacity of a section
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