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The scale of a spring balance reading from 0 to 235 N has a length of 13.0 cm. A fish hanging from the bottom of the spring oscillates. A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.00 Hz. Ignoring the mass of the spring, what is the mass of the fish?
Determine the height of capillary rise of benzene in a clean glass tube of 0.01 inches ID at a temperature of 20 degrees Celsius. Assume λ = 65 degrees Celsius.
A 1000 in diameter solid steel (p= 0.303) bar is 10.0 ft long. Under a tensile load. (a) Estimate the lateral strain experienced by the bar (b) Estimate the cross sectional dimension of the bar when under strain
Footings for a structure are to be built beneath a basement slab on a clay soil at a depth of 20ft below present ground level. The groundwater table is 15 ft below the ground surface. The soil-void ratio is about 0.87.
how large a sample must we take in order to be a) 95% b) 90% c) 99 d) 99.73% confident that the error in the estimated mean lifetime will not exceed 20 hours.
A floor slab has a fundamental bending frequency of 10Hz. A shaker is placed at the centre of the slab for a dynamic testing. The tests confirm that the slab displays a damping ratio of 2% of critical.
Two ships A and B are moving with constant speeds Va and Vb along straight intersecting courses. The navigator of ship B notes the time rates fo change of the separation distance r between the ships and the bearing angle theta.
A simple way to model air pollution over a city is with a box model that assumes complete mixing and limited capability for the pollution to disperse horizontally or vertically except in the direction of the prevailing winds
A highway reconstruction project is being undertaken to reduce crash rates. the reconstruction project involves a major realignment of the highway such that a 60mi/h design speed is attained.
If there are 50 vehicles on a 4000-ft highway lane and the average time headway between two adjacent vehicles is 2.2 seconds. A) Calculate traffic density in vehicle/mile (vpm) and average space headway in feet/vehicle (fpv).
Obstruction due to underground electric lines requires that the x coordinate location of point C must be three feet as shown in the figure, as opposed to 1.5 ft for point B. Determine the magnitude of the resultant of the two forces
Two identical uniform boards, each of weight 40lb, are temporarily leaned against each other. Knowing that the coefficient of static friction between all surfaces is 0.40
What is the result of a volume change in a saturated cohesive soil because of expulsion of the water occupying the void spaces
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