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Car A is traveling at Va=130km/h as it passes a police officer in car P, but over the next 5 seconds, the car uniformly decelerates to the speed limit of 100 km/h, and after that the speed limit is maintained. At the moment when A passes P, the police car begins to accelerate at the constant rate of 6m/s^2 until a speed of 160 km/h is achieved, and that speed is then maintained, determine the distance required for the police officer to overtake car A.
what is the primary growth front? what is the secondary growth front? what happens when they approach each other? what
a 10-lb block is attached to an unstretched spring of constant k12lbin. the coefficients of static and kinetic friction
At the exit, the pressure is 113 kPa and the temperature is 69 degrees C. Determine the mass flow rate, the exit velocity and the area of the exit.
package is dropped from the plane which is flying with a constant horizontal velocity of vA = 150 ft/s at a height h = 1500 ft. Determine the radius of curvature of the path of the package just after it is released from plane at A.
Estimate the theoretical fracture strength of a brittle material if it is known that fracture occurs by the propagation of an elliptically shaped surface crack of length 0.16 mm and that has a tip radius of curvature of 0.002 mm when a stress of 1..
A flywheel can be considered as being composed of a thin disc and a rim. The rim weighs 322 lb and has diameters of 24 in. and 30 in. The disc weighs 64.4 lb. Determine the mass moment of inertia about the centroidal axis about which the flywheel ..
the work on a system with a mass of 100 lbm is known to be 10 btus. if there is no change in potential energy and the
Sketch the thermal circuit of the system. Label (using the above symbols) all pertinent nodes and resistances.
Finding the volume of hydrogen, A hydrogen filled balloon of the type used in cosmic ray studies is to be expanded to its full size which is a 100-ft diameter sphere, without stress in the wall at an altitude of 150,000 ft.
the tank shown has a 180 mm inside diameter and a 12 mm wall thickness. knowing that the tank contains compressed air
How many engagement points on the flywheel would be necessary to make this machine safe? Show your work.
Design a wide flange, simply supported beam below so that the stress due to bending does not exceed that allowed by AISC for A36 steel and calculate the shear stress where the parts join as indicated. Maximum V = 10,000 lb.
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