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1) A steel cable 1.25 inches in diameter and 50 ft long is to lift a 40,000 lb weight. What is the length of the cable during lifting? The modulus of elasticity of the steel is 30x106 psi.
2) A large flat plate is subjected to constant amplitude uniaxial cyclic tensile and compressive stresses. Compute the critical crack length if the fatigue life must be at least 3x106 cycles. Assume the initial maximum edge surface crack length to be 1.1 mm, and a maximum tensile stress of 160 MPa. Assume m=3.0, A=1.4x10-13MPa in meter units, and Y=1.2.
3) Using the attached figure, for a Cu-20% Wt Ag alloy, determine the phases present, their percentage amounts, and their compositions at
a. 1000 degrees Centigradeb. 781 degrees Centigradec. 779 degrees Centigrade
A Si sample is doped with 10^17 As atoms/cm^3. What is the equilibrium hole concentration P0 at T=300K?
Two particles are fixed to an x axis: particle 1 of charge q1 = 2.03 x 10-8 C at x = 16.0 cm and particle 2 of charge q2 = -4.62q1 at x = 77.9 cm. At what coordinate on the x axis is the electric field produced by the particles equal to zero
redesign the 1s-counting machine, assigning the states in the binary counting order (S0-S3=00,01,10,11). Compare the cost of the resulting sum-of-product excitation equations with the ones derived in the text.
A propagating electromagnetic wave is described as follows (inset your own equation for Electric field). Determine if the wave is linearly polarized, left-hand elliptic polarized, right-hand elliptic polarized, left-hand circular polarized, or rig..
A strain gauge of 120O with a gauge factor 2 is used to measure the longitudinal strain developed in a cylindrical bar which has a diameter of 100mm and Young's Modulus of 5 x 1010Pa. A compressive force of 2 x 106N is applied to the bar.
explain the graph we recieved in the simulation that shows the relationship between the recieved throughputand sent
a ppl frequency synthesizer has an output frequency of 470 MHz. A divideby10 prescaler is used. The reference frequency is 10 KHz. what is the frequency step increment
Design a circuit that lets exactly one full negative pulse (from an input train of pulses) pass through to the output, after a button is pushed.
an Armstrong indirect FM modulator to generate an FM carrier with a carrier frequency of 96 MHz and deviation of f=20 KHz. A narrowband FM generator with Fc=200 KHz and adjustable deviation f in range of 9 to 10 Hz is available.
If a radio ran for 3 hours on a cheap battery rated at2Ah, how long will the radio run on a battery rated at 5Ah
Find the maximum current that a fully-charged D-cell can supply-if only briefly-such that itsterminal voltage is at least 1.0V. Assume an emf of 1.5V andan internal resistance of 0.12 ohm.
two electronics students are discussing electrical units. student a says that electrical power is measured in units
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