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On your first trip to Planet X you happen to take along a 165 g mass, a 40 cm long spring, a meter stick, and a stopwatch. You're curious about the free-fall acceleration on Planet X, where ordinary tasks seem easier than on earth, but you can't find this information in your Visitor's Guide. One night you suspend the spring from the ceiling in your room and hang the mass from it. You find that the mass stretches the spring by 30.5 cm. You then pull the mass down 5.10 cm and release it. With the stopwatch you find that 9 oscillations take 16.3 s.
An absorption column is to be designed to recover 99.5% of the NH3 from a feed stream, which is supplied at 72 F and an NH3 partial pressure of 10 mm Hg. The feed stream contains 2100 lbm/hr of air.
A NCSU student turned on his/her 150 W fan inside his/her room, 4m * 6m * 6m, before going to class in the morning of a summer day, excepting to find his/her room cooler when he/she returns at night.
Water enters the pump of a steam power plant as saturated liquid at 20 kPa at a rate of 45 kg/s and exits at 6 MPa. Neglecting the changes in kinetic and potential energies and assuming the process to be reversible
given s=.30/(60-u), where s is the spacing (space headway) in miles, and u is the speed in miles per hour, derive the relationships u-k, u-q, and q-k. Also, estmate the capacity (qmax) of the roadway.
A cylinder with a 6.0 in., diameter 12.0 in. height is put under a compresive load of 150 kips. The modulus of elasticity for this specimen is 8000 ksi and Poisson's ratio is 0.35. calculate the final length and the final diameter of this specuman..
A 2000-lb wheel load is to be supported by aggregate over soil with a maximum bearing pressure of 1000 lb/sqft. What depth of aggregate is needed if the angle theta is 40 degrees
Knowing that the coefficient of static friction is 0.25 at all surfaces of contact, determine the smallest fprce P that should be applied to one of the wedges.
How much must he set aside in his savings to account for the 3-months summer to cover his rent for next year. The savings account earns 3% with monthly compounding.
A roadway is to be designed on a level terrain. The roadway is 500 ft. Six Cross Sections have been selected at 0 ft, 100 ft, 200 ft, 300 ft, 400 ft, and 500 ft. . The cross sections have areas of 130 ft2, 140 ft2, 70 ft2, 110 ft2, 80 ft2, and 25 ..
Water is pumped at a rate of 1.57 cfs from one large open tank into another through a 6 in diameter cast iron pipe 400 ft long. The water level in the second tank is 160 ft above the level of the first tank and the discharge end of the pipe is sub..
When P = 800 lb, A) Draw the shear and bending moment diagram along its length; B) Determine the maximum tensile and compressive bending stresses; and C) determine the maximum shear stress.
A Silane contains 90.31 % silicon and 9.69 % hydrogen by mass. The compound has a molar mass of 62 g/mol. Determine the compound's empirical and molecular formula.
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