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1.The 10-lb lamp fixture is suspended from two springs, each having an unstretcfhed length of 4 ft and stiffness of k=5lb/ft. Determine the angle theta for equilibrium.
2.What are reasons for difference in the coefficient of kinetic friction on horizontal surface with a hanging mass at constant velocity compared to object one on incline
3.A 1-m^3 volume tank contains a mixture of 18.32 moles of oxygen, 16.40 moles of Nitrogen, and 6.15 moles of carbondioxide. What is the partial pressure of each gass componet at 25 degrees?
An object of density P_a, volume V_a, and weight W_a is thrown from a rowboat floating on the surface of a small pond and sinks to the bottom.
(a) Find the Reynolds number for the motion of this baseball through air. (b) Determine the drag force on the baseball under these conditions in N.
A concrete mix with a 3-inch slump, w/c ratio of 0.50 and a sand with a fine modulus of 2.4 contains 1700 lb/cubic yard of coarse aggregate. Compute the required weight of coarse aggregate per cubic yard.
The dissolved oxygen of sample water is 1.5 mg/L. At 25 C, the dissolved oxygen of the dilution water is 8.25 mg/L. You are told the BOD5 of the sample is 130 mg/L. You have a target final dissolved oxygen of 3.0 mg/L
The 2 blocks are released from rest when r =0.8m and theta=30d. Neglecting the mass of the pulley and the effect of friction in the pulley and between block A and the horizontal surface.
If the detention storage on the paved section is increasing at the rate of 60 m3/hr, what is the runoff rate into the inlet grate?
The acceleration of a particle along a straight line is defined by a=(2t-9)m/s^2, where t is in seconds.At t=0, s=1m, and v=10 m/s. When t=9s, determine the particles position, the total distance traveled, and the velocity.
In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocity of +3.1 m/s, grabs him. The tackler holds onto the receiver, and the two move off together with a velocity of +1.6 m/s
Deisgn a thrust block needed to resist the force generated by a 45 degree flanged regular elbow which carries a flow of 14 cfs. The diameter of the fitting narrows from 24 inches to 18 inches and the inlet pressure is 100 psi.
Labor of this activity is given as in the CREW, 1 brick mason and 1 helper. The productivity is 0.5 labor hours per 1 sf. The wages are for the mason $60 and for the helper $45 per hour.
How many hours should it take an articulated wheel loader equipped with a 4 yd3 bucket to load 3,000 yd3 of gravel from a stockpile into rail cars if the average haul distance is 300 feet one way
The platform itself weights 30 kN in air, and each cylinder weighs 1.0 kN per meter of length. What total cylinder length L is required for the platform to float 1 m above the water surface
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