Measurements should be reported to the nearest 1000, 100, 10, 1, 0.1, 0.01, 0.001 units, etc., depending on their variability and intended use. Using your best judgment, how should the following measurements be reported?
a. Deformation of a steel specimen during the tension test (in.)
b. Tensile strength of steel (psi)
c. Modulus of elasticity of aluminum (MPa)
d. Weight of aggregate in a sieve analysis test (grams)
e. Compressive strength of portland cement concrete (psi)
f. Moisture content in a concrete masonry unit (percent)
g. Asphalt content in hot-mix asphalt (percent)
h. Specific gravity of wood
i. Distance between New York City and Los Angeles (miles)
j. Dimensions of a computer microchip (mm)
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- In a tensile test for an aluminum alloy, the sample used is 2 inches long and 0.5 inches in diameter. The proportional portion of the tension stress-strain diagram for an aluminum alloy is shown below. Determine the modulus of elasticity for this material: ____x106 lb/in2. Pay attention to units and calculate your answer to 1 decimal place for the unit specified above.arrow_forwardA specimen is originally 300mm long, has a diameter of 14mm, and is subjected to a force of 2 kN. When the force is increased from 2 kN to 8 kN, the specimen elongates 0.225 mm. Determine the modulus of elasticity for the material if it remains linear elastic. Express your answer to three significant figures and include the appropriate units.arrow_forwardA rod made of aluminum alloy with a gauge length of 200 mm, diameter of 11mm, and yield strength of 150 MPa, was subjected to a tensile load of 5.85 kN. If the gauge length was changed to 100.10 mm and the diameter was changed to 9.9967mm, calculate the modulus of elasticity and Poison’s ratio. Are the numbers in line with standard numbers for Aluminum Alloy?arrow_forward
- A rod made of aluminum alloy, with a gauge length of 100 mm, diameter of 10 mm, and yield strength of 150 MPa, was subjected to a tensile load of 5.85 kN. If the gauge length was changed to 100.1 mm and the diameter was changed to 9.9967 mm,calculate the modulus of elasticity and Poisson’s ratio.arrow_forwardA 10 cm long rectangular bar (when subjected to a tensile load) deforms by 0.1 mm. Calculate the normal strain.arrow_forwardA specimen is originally 1 ft long, has a diameter of 0.5 in., and is subjected to aforce of 500 lb. When the force is increased from 500 lb to 1800 lb, the specimenelongates 0.009 in. Determine the modulus of elasticity for the material if it remainslinear elastic.Note: Draw the given data.arrow_forward
- 2. Given that a steel cylinder of dimensions 12.0 mm in diameter and 70 mm long is subjected to tension.(a) Determine the modulus of elasticity in the figure below.(b) Using the figure below, calculate the deformation in the steel cylinder subjected to 15 kN tension forcearrow_forwardGiven that a steel cylinder of dimensions 12.0 mm in diameter and 70 mm long is subjected totension.(a) Determine the modulus of elasticity in the figure below.(b) Using the figure below, calculate the deformation in the steel cylinder subjected to 15 kNtension force.arrow_forwardQuestion 1: A 25mm diameter aluminum rod is loaded axially in tension with a load of 100kN. The rod is 4 m in length. Aluminum has a modulus of elasticity of 69GPa and a Poisson’s ratio of 0.35. 1) What is the decrease in diameter of the rod due to the applied load? 2) What is the new length of the rod?arrow_forward
- A compound bar consisting of bronze, aluminum, and steel segments is loaded axially as shown in the figure. The cross-sectional area of the bronze, aluminum, and steel are 412 mm2, 601 mm2 , and 260 mm2 respectively.Determine the change in length (in mm) of the bar if P = 30280 N.The moduli of elasticity are 81.17 GPa for bronze ,71.07 GPafor aluminum , and 202.36 GPa for steel . Round off the final answer to four decimal places.arrow_forward5. A rigid steel container is partially filled with a liquid at 15 atm. The volume of the liquid is 1.23200 L. A a pressure of 30 atm, the volume of the liquid is 1.23100 L. Find the average bulk modulus of elasticity of the liquid over the given range of pressure if the temperature after compression is allowed to return to its initial value. What is the coefficient of compressibility? (3 DECIMAL IN FINAL ANSWER PLS!!)arrow_forwardCalculate the plane stresses involved where two pieces of steel are welded together. Our sign convention defines forces causing the object to be in tension positive and forces causing the object to be in compression negative. As we can see from the picture our σx = −4.5MPa and σy = 10MPa. Steel has an average Young’s modulus of elasticity of E = 200 GPa and an average Poisson’s ratio of ν = .285 Because it is not defined we will assume that initially there is no shear stress, τxy = 0. Solve only for: Compression in the x-direction(deformation along the weld)=(-Blank 4)? x 10^-5arrow_forward
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