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A railroad car of mass 2,000 kg traveling at a velocity v = 10 m/s is stopped at the end of the tracks by a spring-damper system, as shown in Fig. 2.108. If the stiffness of the spring is k = 80 N/mm and the damping constant is c = 20 N-s/mm determine (a) the maximum displacement of the car after engaging the springs and damper and (b) the time taken to reach the maximum displacement.
1. an orthopedic called mend-a-bone is made of an extracellular matrix extract plasticized with glycerol mw92 to help
a house is losing heat at a rate of 2700 kjh per celsius temperature difference between the indoor and the outdoor
a homeowner has devised a humidifier that is shown below. water is taken from the faucet and fed to a reservoir that
A gasoline engine is modeled as an Otto cycle. It has at temperature and pressure at the beginning of compression of 10°C and 90 kPa. The compression ratio is 7 and the specific energy added to the air during the heat addition process is 1432.46 kJ/k..
it is proposed to improve the takeoff performance of a single-engined aircraft fitted with a 50-in-diammeter propeller
an adiabatic heat exchanger is used to heat cold water at 15degc entering at a rate of 5 kgs by hot air at 90degc
the annual growth rate of energy utilization in the world was 2.5 per year in 2011. how long would it take to consume
an air conditioning unit with refirigerant-134a as the working fluid is used to keep a room at 26 degrees celcius by
U-tube mercury manometer with one arm open to atmosphere is used tomeasure pressure in a steam pipe. The level of mercury in open arm is 97.5 mm greater than thatin the arm connected to the pipe. Some of steam in the pipe condenses in the manomete..
Assume that the center of masses of the upper arm and the forearm acts in the geometric center of the respective body segment, and the center of mass of the hand acts at the same location that the cable is in the hand (given below). If the person is ..
initially 0.05 kg of air is contained in a piston-cylinder device at 200 degc and 1.6 mpa. the air then expands at
The outer surfaces are exposed to ambient air, with T8,2 = 25°C and h z = 4 W/m2 · K. while hot oil flowing through the hole is characterized by Tx.1 = 300°C and h1 = 50 W/m2 · K. Determine the corresponding heat rate and surface temperatures.
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