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The system of the previous problem starts from rest with no slack in the cable. What value of the tension T will result in an initial block acceleration of 0.8 m/s2 to the right?
What is the concentration of tracer in the reactor 1 h after tracer addition is terminated? The reactor had an initial concentration of tracer of 1.0 mg/L when tracer addition commenced.
a 150 L helium tank contains pure helium at a pressue of 1825 psig. How many 3.5L helium balloons can be filled from the helium in the tank? (Assume an atmospheric pressue (14.7 psia) and a temp of 298K.
Water at 20ºC flows at a velocity of 2 m/s in a 200-mm diameter horizontal ductile-iron pipe. a) Estimate the friction factor in the pipe, and state whether the pipe is hydraulically smooth or rough.
the porosity of the soil is 0.52 with an organic carbon content of 0.1%. the depth to groundwater is 12m. provide a qualitative evaluation for the fate of PCE at the site as a basis for a phase I site assesment.
Two immiscible fluids are in contact. Fluid I is denser and is also well mixed. The concentration of species a is cao everywhere within this fluid and the temperature in fluid I is held constant at To.
Consider the flow field where angular velocity w is equal to 2pi rad/s ( a physical frequency of 1 Hz). Is this flow field compressible or incompressible
Two pipes of identical length and material are connected in parallel. The diameter of one is twice the diameter of the other. What is the ratio of the flow rates (Q2/Q1) in the two pipes
1a draw the fbd and the shear and bending moment diagrams for the beam shown in figure i. label all minimums maximums
List down two methods used in analysis of structures in civil engineering
Assuming the average cooling season to be 120 days and the cost of oil to be $20/barrel, determine how much money would be saved per year.
Sometimes the side of concrete bridges is observed to turn black in colour. What is the reason for this phenomenon?
A trapezoidal channel having bottom width of 8 m and side slopes of 1 : 1, carries a discharge of 80 m^3/s. Find the conjugate depth to an initial flow depth of 0.75 m before the jump.
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