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a meter long steel plate with a rectangular cross section(10mm x 50mm) is resting on a frictionless surface under the sun. the plate temperature is measures to be at 40C. the plate is then moved into a cold room and is left to rest on a frictionless surface. after several hours, the template is measured to be at 5 C. the steel has a modulus of elasticity equal to 200,000MPa and a coefficient of thermal expansion equal to 1.1 x 10^-5m/m/C.
a)what is the length of shrinkage?
b)what tension load is needed to return the length to the original value of 4 meters.
c)what is the longitudinal strain under this load
Jackie is now exactly 40 years old, and plans to invest a recurring amount over the next 15 years (until age 55) in an account bearing 10% annual interest. She plans to retire at age 65 and live to age 100 (don't we all).
A particularly long traffic light at an intersection is green 20% of the time. A car approaches this intersection once each day. Let X represent the number of days the car encounters a green light.
Undrained Shear box tests were carried out on a series of soil specimens with the following results Total Normal Stress (kPa) Total shear stress at failure (kPa) Determine the cohesion and the angle of friction of the soil
Imagine a slide with a radius of 1.5 m and a vertical drop of 2 m per turn. Further suppose that one of my daughters is sliding down at a constant speed of 2 m/s
If the time required to pay for parking is exponentially distributed with a mean of 15 seconds, find the average time in system.
An undisturbed soil sample has a total unit weight of 19.4 kN/m3, a dry unit weight of 16.9 kN/m3, and a specific gravity of soil solids (Gs) of 2.69. If the sample could be saturated without changing its porosity, calculate the amount of water (i..
Calculate the IEEE double precision floating number immediately greater than the minimum number in double precision in both binary and decimal form
Demand for a particular product is normally distributed with a mean of 100 units and a standard deviation of 20 per period. if there are 120 units in inventory at the beginning of this period
Oil (SAE 30) flows between parallel plates spaced 5mm apart. The bottom plate is fixed, but the upper plate moves with avelocity of .2 m/s in the positive x direction. The pressuregradient is 60 kPa/m, and is negative.
A 175 Mi^2 watershed has a 4200 acre reservior within its boundary . The annual watershed runoff to the reservior is 13in. A flow of 120 mgd (368 ac-ft/day) is to be drafted from the reservior. The annual rainfall is 38in.
Imagine two small towns of 1,000 people: Blacktop and Parktown. In the urban sprawl that is Blacktop, all the residents own fuel-efficient cars (15 km/liter) and travel an average of 20,000 km per year.
The sphygmomanometer is a device used to measure blood pressure. For a healthy person, the diastolic pressure is about 80mmHg (gage). Convert the pressure to mm of blood assuming the specific gravity of mercury and blood are 13.6 and 1.05
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