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A 2500-lb car (CD = 0.35, Af = 25 ft^2, and ? = 0.002378 slugs/ft^3) has 14-inch-radius wheels, a drivetrain efficiency of 90%, an overall gear reduction ratio of 3.2 to 1, and drive axle slippage of 3.5%. The engine develops a maximum torque of 200 ft-lb at 3500 rev/min. What is the maximum grade this vehicle could ascend, on a paved surface, while the engine is developing maximum torque? (Assume that the available tractive effort is the engine-generated tractive effort.)
Step by step/required formula explanation needed
Freight train A passes through Petticoat Junction, a node where twosingle track lines connect, at 6:50 AM, traveling at 40 MPH, with50 cars that are 70 feet nose to nose
Design a single angle strut connected to a gusset plate to carry 180k n factored load. The length of the strut between center to center intersection is 3m.
A round bar of 6mm diameter is made of 6061-T6 aluminum. When the bar is stretched by an axial force P, its diameter decreases by 0.450 microns. what is the magnitude of the load P
THe upper end of the spring is welded to the lunger and the lower end is welded to the base plate. If the plunger is lifted 1.5" above equilibrium and released from rest, calculate its velocity as it strikes A.
From an aerial photograph, one observes that on a level section of a (multilane) highway, 25% of the vehicles are trucks, 75% are cars, and there are 50 vehicles per mile of highway. The trucks travel at 40 mph and the cars at 60 mph.
Then calculate a 6% tax on the total and display the total amount owed (including the tax) Round your answer to two decimal points and include the dollar sign in your display as appropriate.
Calculate the compression resistance of 200 UC 59.5 column which is 3.6 m high (between lateral supports). Both ends of the stanchion are held effectively in position but only one is also restrained in direction. Use grade 43 steel
A Proctor compaction test in the laboratory on a borrow pit soil gives a maximum dry unit weight of 19 kN/m3 and optimum water content of 11.5%. The bulk unit weight and water content of the soil in the borrow pit are 17.2 kN/m3
what do mean by outstand element of compression flange, internal element of compression flange and web general
Offer an explanation as to why covalently bonded materials are generally less dense than ionically or metallically bonded ones.
What ethical problems might these conflicts create? How are these two different ethical codes tied to public perceptions of the role of law enforcement?
Oil (SAE 30) flows between parallel plates spaced 5mm apart. The bottom plate is fixed, but the upper plate moves with avelocity of .2 m/s in the positive x direction. The pressuregradient is 60 kPa/m, and is negative.
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