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1. An automobile having a mass of 900 kg initially moves along a level highway at 100 km/h relative to the highway. It then climbs a hill whose crest is 50 m above the level highway and parks at a rest area located there. For the automobile, determine its changes in kinetic and potential energy, each in kJ. For each quantity, kinetic energy and potential energy, specify your choice of datum and reference value at that datum. Let g 5 9.81 m/s2.
2. Vehicle crumple zones are designed to absorb energy during an impact by deforming to reduce transfer of energy to occupants. How much kinetic energy, in Btu, must a crumple zone absorb to fully protect occupants in a 3000-lb vehicle that suddenly decelerates from 10 mph to 0 mph?
a plastic bag is filled with 1 ft3 of air at 17 degree c at atmospheric pressure. what is volume at 2 atm pressure?
Design a bridge that will withstand 4 fully loaded semi-trailers
Calculate the adiabatic flame temperature attained when methane at 298k, is combusted (a) with oxygen in the molar ratio air/CH4 = 9.524. Assume that CO2 and H2O are the products of the combustion. The adiabatic flame temperature is that temperature ..
carbon monoxide at 77f 1 atm enters and insulated reactor operating at steady state and burns with air entering at 77 f
1 calculate the density of al in gcm3 given that it forms an fcc crystal structure with an atomic radius of 0.143 nm
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The pressure in a tire depends on the temperature of the air in the tire. The gage pressure of an automobile tire with a volume of 0.025 m3 is measured to be 210 kPa at 25 oC at sea level on a day with calm weather. If the temperature of the air in t..
find: a) the pitch diameter of the pinion. b) the pitch diameter of the gear. c) the output torque of the gear. d) the minimum length of the key used to attach the gear?
water jey machining jet is issued through 0.3mm dia at pressure 400mpa. density of water is 1000kgmm3. the coefficient
the engine of an automobile supplies 180 hp at 2500 rpm to the drive shaft. if the maximum shearing stress in the drive
Identify a series of physical problems which lend themselves to being simplified to the use of a 2D solid element - Describe and discuss the differences of the 2D Solid Element types
a rocket having a total mass of 8 mg is fired vertically from rest. if the engines provide a constant thrust of t300 kn
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