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Rubber disks are used to provide cushioning for equipment subjected to vibrations. The vibration analysis indicates that the rubber disk should provide an effective spring constant of 600 lb/in. Spacing considerations dictate that the disk should be 0.5 intall. Take the rubber to have a Modulus of Elasticity of 400 psi. (a) Determine the desired diameter of the disk. (b) If the rubber strain is not to exceed 0.2 in/in, determine the maximum allowable compressive force. Recall that the spring constant, k=Fx,or in terms of an axially loaded member
Assuming an isotropic and homogenous hydraulic conductivity of 0.0001 cm/s what is the magnitude and direction of specific discharge (q)?
A glass jar is heated in an oven and sealed when the air pressure is 103 kPa and the temperature is 105 C. Find the absolute, gage, and vacuum pressures in the jar when it cools to 20 C.
The discharge of the river at the basin outlet is measured at an avarage of 650 cfs. assuming that the charge in storage for the system is essentially zero, estimate the ET losses for the area in inches and centimeters for the year
The coefficient of friction between the crate and the floor is µs = 0.4 and µk = 0.3. If P is slowly increased until the crate starts to move and then remains constant, determine using energy methods the speed of the crate after moving 2 m.
if a pipeline is horizontal, what is the porportion of the potential energy head at the upstream crossection that is changed to kinetic energy head at the downstream crossesction
Water is pumped from a reservoir whose surface elevation is 1390 ft to a second reservoir whose surface elevation is 1475 ft. The connecting pipeline is 4500 ft long and 12 in. in diameter.
what is the difference between factor of safety in rankine & coulomb in overturning, sliding and bearing capasity ?
Discuss the role of each physical, chemical and biological unit operations and processes employed in the wastewater treatment facility. If this treatment facility is required to supply class A recycle water to those industries for non-potable use
describe the measurements that would have to be taken and the equations that would have to be used to determine G23, V32, and E2 for a specially orthotropic transversely isotropic material from a single tensile test.
An embankment for a highway 30m wide & 1.5m in a compacted thickness is to be constructed from a sandy trucked from a borrow pit. the water contenet of the sandy soil in the borrow pit is 15%& its void ratio is 0.69.
A 500 L (132 gal) tank contains 255 mg/L 2,4,6-trichlorophenol dissolved in trichloroethylene (TCE). What is the 2,4,6-trichlorophenol concentration in ppm Assume the temperature of the system is 20 degrees C.
The section of the plywood in the 3rd quadrant is sawed off and the resulting piece is then glued squarely over the 4th quadrant portion of the plywood with glue of negligible weight.What are the x- and y-coordinates of the resulting center of gra..
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