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A 20g mass vibrates accordings to the equation x=0.0009cis(3pit/2 + pi/2). Find the amplitude, period, max velocity, max acceleration, spring constant "K", and the total energy of the system
Water at a pressure of 13 atm, at street level, flows into a building at 3m/s through a 6 cm diameter pipe. The pipe tapers down to a 2 cm diameter by the top floor 50 m above.
The Pomdeterra wastewater treatment plant produces thickened sludge that has a suspended solids concentration of 3.8 percent. They are investigating a filter press that will yield a solids concentra
The footing has a f'c=3000psi. Assume the the footing base is 5 ft below the grade and the soil is 100 lb/ft with an allowable pressure of 4500lb/ft fy=60,000
When X exceeds some critical distance the slider will "lock" and no longer move regardless of the force applied. If the coefficient of friction for the slider bearing is 0.1, what is the critical va
With the recent trend towards obesity, the manufacturer wants to change the length (but not the cross-section) so that the 6" deflection occurs when a 200 pound person stands on the end.
Assume that Santa weighs 300 lbs, visits 10 houses an hour and requires a 20 foot lift at each house, what is the average power that the system will use if it is perfectly efficient
The force of the resulting water jet physically knocks the mildew off. Estimate the maximum force (lbs.) that a water jet from a powerwaher can make on a glass window.
A proposed square footing carrying a total load of 900 kips is to be constructed on a uniform thick deposit of cohesionless soil. The soil's unit weight is 135 pcf, and its angle of internal frictio
Determine the valve loss coefficient needed for h=20 ft. All losses except for the flow control valve are negligible. The area of the pipe is 5 times the area of the exit nozzle.
Ppurpose of the exercise is for students to develop a shaft sinking and lining strategy for the site and
The structure consists of two uniform members AB and BC, each weight 2kN. The member are pinned to each other at B, and the structure is supported by a pin at C and a surface at A having coefficient
a 1600ft long sag vertical curve(equal tangent) has a PVC at station 120+00 andelevation of 1500 ft.the initial grade is -3.5% and the final grade is +6.5%.
Design a suitable ore pass to transport ore a vertical distance of 200m from the extraction level to the transport level of a block caving mining operation.
John had a little business on the side and did not have a girlfriend when he was at school and ehnce he was able to save the $10,000 for his dream car. The dealer agrees to take the car back for $80
Describe a tunnel-boring machine in detail and cite examples of their use. Particular emphasis should be placed on the cycle of operations for such a machine.
A circular bar under pure torsion needs to transfer 50 N*m of torque. The total bar length is 1 m and the total rotation can not exceed 2 degrees. The bar is made of a material with G=3000 MPa.
A bar is under uniform axial loads. AB is 1 foot and has a area of .5 in^2 and BC is 1 foot and has an area of .3 in^2. AB has a 1000lb force putting it under tension and BC has a 500lb force puttin
Terry wants to purchase a used car for $8000. The dealer offered to finance the deal at 8.5% APR for 4 years with 10% down payment. Terry's bank will provide a loan at 7.8% for 3 years, but wants a
State reasons for the popularity of decline mining in modern operations. What factors need to be taken into account in deciding the cut off depth beyond which shaft operations should be used instea
The initial concentration of carbon in the metal is 0.1wt%. We first do an experiment by applying a concentration of 5%wt of carbon at the surface of a similar slab and maintaining the system at 900
Determining the shape of shafts and the size of shafts - Detail the unit operations within a conventional drill and blast shaft sinking operation including the shaft bottom operations as well as tho
A single metallic crystal is oriented such that the normal to the slip plane and the slip directions are at angles of 50 and 40 degrees respectively, with the tensile axis
The bar is fixed at B (length=2a) with a pin support at A (length L=0). Additionally, at A is a torsion spring (spring constant Ca = EI/a) and an extension spring is attached at B (spring constant C
Briefly describe the mechanisms involved in the excavation of rock - What parameters are used when determining the shape of shafts and the size of shafts?