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How many 34-inch diameter rivets are required to transmit 55,000 lb from the two angles to the gusset plate if the allowable shear stress in the rivets is 15,000 psi. Assume each rivet carries the s
The water pressure in the municipal pipeline is 450 kPa, the sum of the local loss coefficients in the building pipes is 11.0, and the flow to be delivered to the top floor at 25 L/s through a 150-m
Water leaves a reservoir at 0.05 m^3/s through a 200-mm riveted steel pipeline that protrudes into the reservoir and then immediately turns a 90º bend with a local (minor) loss coefficient equa
A stream with a flow of 22 mgd contains 180 mg/L of sodium cyanide in the form of NaCN. Chlorine can be added to destroy the NaCN waste according to the reaction shown below. Find the theoretical mi
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
A three span continuous beam has spans of 27, 30, and 27 feet. The beams support one-way slabs, 6 inches thick that span 20 feet center to center. Assume that the beams are 16 inches wide and 24 inc
The motion of a particle on the surface of a right circular cylinder is defined by the relations, R = A, theta = 2pi(t), and z=Bsin(2pi)(nt), where A is a constant. Determine the magnitudes of the v
The elastic modulus is 40 GPa, the yield stress is 150 MPa, the ultimate stress is 525 MPa, and the ultimate strain is 0.38 (mm/mm). Perform the following tasks for this material. compute the
An open top tank contains a layer of SAE 30 oil 0.5 m thick, a layer of water 0.7 m thick, and a layer of mercury 0.3 m thick. Calculate the pressure, and the piezometric head at the free surface, a
A U manometer reads 20 cm air as operating fluid and a given manometric fluid. A single branch closed tube reads 35 cm connected to point 1. If P2 = 1.2 ATM calculate the pressure in point 1 and the
Discuss the following examples: a) Car overheating b) Personal budget deficit c) Shower too hot or too cold In all the cases discuss first the normal condition and after that the problem condition.
A container with a plunger compresses one pound mole of an ideal gas from 1 atmospheres pressure to 10 atmospheres. Calculate the amount of work done if the process is considered to be polytropic.
Tensile tests of structural steel indicate that it fails when the axial tensile strain is 1800mu. Determine the maximum change in length that a 0:25-in diameter structural steel rod in tension can
a temperature probe moves with the velocity 2i+2j-3k through air. the temperature of air changes as T(x,y,z,t)=(2x^2-3y+z^3)cos(at). Find the rate of change of temperature measured by the probe.
disk of radius R=7 in. spins at a constant angular speed of w=500rpm in the clockwise direction. If the disk is released from rest far above the ground, what are the speed and acceleration of the di
A square yellow-brass bar must not stretch more than 2.5 mm when it is subjected to a tensile load. Knowing that E = 1.5 GPa and that the allowable tensile strength is 150 MPa
A 30-ft-high, 1-ft-diameter pipe is welded to the top of a cubic container 13 ft * 3 ft * 3 ft2. The container and pipe are filled with water at 20°C. Determine the weight of the water and the p
The Permeability of a semi-impervious soil was evaluated in a falling-head permeameter whose head decreased from 40 to 15 inches in 5min. The body diameter was 0.1 inch, and the sample length and di
Start from the values for the density and the kinematic viscosity of CO2 at 15o C and standard atmospheric pressure (101.3 kPa), and first determine the value of the dynamic viscosity at the same co
Determine the effective annual interest rate for a nominal rate of 8% per year, in which is compounded quarterly.
determine a dollar amount on December 31st , 2011 FOR $1000 equal payments made at the end of each of the previous 7 years including the current year. use an effective interest rate of 10% compounde
A circular bar of magnesiuen alloy is 750 mm long. The bar is loaded in tension to an elongation of 6.0 mm, and the load is removed. (a) what is the permanent set of the bar (b) if the bar is reload
Assume the rate constant for BOD decay is 0.2 d^-1, the mean velocity of the stream is 0.5 m s^-1, and the initial concentration is 100 mg L^-1 at x=0. Plot the resulting concentration with downstre
Knowing that portion AC of the rope lies in a plane parallel to the xy plane and that the magnitude of the tension T in the rope is 62 lb, determine the moment about O of the resultant force exerted
The top and bottom pull to the left with 10 kips each, the middle part 20 kips to the right. The bolts have a diameter 3/8 inch, determine the average shear stress on the bolt surfaces that are subj