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A brass (nonmagnetic) block A and a steel magnet B are in equilibrium in a brass tube under the magnetic repelling force of another steel magnet C located at a distance x=.004 m from B. The force is inversely proportional to the square of the distance between B and C. If block A is suddenly removed, the acceleration of block B is a = -9.81 + (k/(x^2)) where a and x are expressed in m/s^2 and meters respectively, and k = 4 e -4 m^3/s^2. Determine the max velocity and acceleration of B
The 15-Mg tank car A and 25-Mg freight car B travel towards each other with the velocities. If the coefficient of restitution between the bumpers is e=0.6, determine the speed of each car just after the collision.
A 1000ft long steel pipe carries water from areservoir with a water elevation at 826ft. The pipe has a diameterof 12in. with a wall thickness of 0.5in.
A 1m diameter pipe bend is carrying water with a steady flow rate of 2 m3/s. The bend has an angle of 90o and lies in a horizontal plane. The volume of water in the bend is 1.5 m3 and the empty weight of the bend is 4 kN.
A Proctor compaction test in the laboratory on a borrow pit soil gives a maximum dry unit weight of 19 kN/m3 and optimum water content of 11.5%. The bulk unit weight and water content of the soil in the borrow pit are 17.2 kN/m3
A specimen of saturated soil has a water content of 145 percent and a total unit weight of 84 pcf. Find the void ratio and specific gravity of solids.
a piston-and-cylinder device contains 5 kg of water initially at 150 C and 0.20 MPa. The frictionless piston is then pushed slowly in an isothermal process until the volume of water becomes 10% of its initial value.
A falling-head permeability test is being conducted on a saturated sample of clayey silt having hydraulic conductivity of 6.5 x 10-9 m/s. The diameter and the length of the sample are 100 mm and 150 mm.
A flowrate of 1.0 L/min of oil of specific gravity 0.92 exists in this pipeline. Is this flow laminar? What is the viscosity of the oil? For the same flow in the opposite directio, what manometer reading can be expected?
You need to compare measured and predicted deflections for the three situations described below. Comment on reasons for the differences between the predicted and measured values. Recall that E = 69 GN/m2, rho = 2700 kg/m3, and the beam cross-section ..
Determine the IRR of building the corrosion-resistant tower. (Hint: Calculate interest rates from 7% to 11% using formulae provided in tables).
Determine if a simple supported W 12x26 (A36 steel) beam has the capacity to support loads that produce 50 kips of live-load shear and 20 kips of dead-load shera.
Assume that 200 g is the equivalent mass of the stick concentrated in the blade which contacts the puck. The coefficient of restitution of between puck and blade is 0.6. Find the velocity of the blade of the stick
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