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A jet airplane with a mass of 5 Mg has a touchdown speed of 300 km/h, at which instant the braking parachute is deployed and the power shut off. If the total drag on the aircraft varies with velocity as shown in the accompanying graph, calculate the distance x along the runway required to reduce the speed to 150 km/h. Approximate the variation of the drag by an equation of the form D = kv2 where k is a constant.
The road is in good condition and is initially dry, but it becomes wet 160 ft before the stalled car (and stays wet until the car is reached). What is the minimum distance from the stalled car at which the driver could apply the brakes and still s..
Assume he has to reach a town 300km away, and that the 40 kg he carries includes both merchandiseand the food necessary for his sustenance during the trip at 2000Cal/day.
The beam is loaded with a concentrated live load of 10 kips at the center of its span, in addition to its own weight.. The dead load includes the beam weight. The steel is A242, Grade 50.
An engineer is to design a channel lined with planed wood to carry 2 m3/s of water on a given slope. The channel cross section can be either a 90 degree triangle or a square. Which would require less wood and by what percentage
a particle of mass 200kg is lifted up vertically by a force of 104n. assuming the acceleration due to gravity is
Determine the support reactions at A, C, and E on the compound beam which is pin connected at B and D.
suppose a steel material of specific gravity of 7.8 is attached to a wood of specific gravity 0.8. if it is required that the material does not sink or rise when left in static water, what should be the proportion of the volume of the steel to tha..
What is the formula to find the Maximum pressure on a form, and what information is needed to find the maximum pressure on the form?
Draw the shear and moment diagrams for the cantilever beam shown in the figure below. Label all values and units clearly and show all work when calculating shear forces and moments.
Consider the 2 wooden beams attached in the given image. Calculate the moment around point A for ?=30. All relevant dimensions are shown.
A small truck is to be driven down a 4% grade at 70mi/hr. The coefficient of road adhesion is 0.95, and it is known that the baking efficiency is 80% when the truck is empty and decreases by one percentage point for every 100 lb of cargo added.
An equal tangent vertical curve is to be constructed between grades of -3.0% (initial) and 1.0% (final). The PVI is at station 110+00 and elevation 420 ft. Due to a street crossing the roadway, the elevation of the roadway at station 112+00 must b..
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