Give a formula that can be used to determine a been allowance for a soft material

Which one(s) of the following about G, shear modulus of elasticity of a material are correct? select all which are correct.     G is also called the modules of rigidity.     G is related to the modulus of elasticity E and Poisson’s ratio .     G is usually smaller than Young's modulus E for the same material.     G is the ratio of shear stress to shear strain when the material's proportional limit in shear has not been exceeded.

12. True or false? In Brinell hardness test, the depth of indentation must not be too great relative to the thickness of the test-piece, otherwise the table supporting the test-piece would be taking the load and not the test-piece itself True False

What is toughness?

Need help starting this assignment.  1- Determine the maximum normal stress, the maximum shear stress, the Modulus of Elasticity, the maximum bending moment and the maximum stress due to bending (also known as flexure stress) on the material, from the information provided. 2- From the results of your analysis, determine what material was used for this test. Check whether the material can withstand the different types of loading the hip implant experiences. Use a factor of safety of 4.

Under which of the conditions below is the generalized Hooke’s law applicable for use in analysis? a. When the material distorts due to any of the normal stresses b. When the material has a negative value for Poisson’s ratio c. When the material exceeds its proportional limit but still remains elastic d. When the material’s cross-section changes along one direction   Which of the following statements is false about the Poisson’s ratio? a. It is a dimensionless quantity b. It relates the modulus of elasticity E and the modulus of rigidity G c. It has a single value for isotropic and homogeneous materials d. Its magnitude is equal to the negative ratio of the longitudinal strain to the lateral strain.

Illustrate the three types of stress using any object found at home: tension, compression, shear.

The % of error between a theoretical shear modulus of 65 GPa and an experimental modulus of rigidity of 60235 MPa is: Select one: O a. 0.0791 % O b. 7.33 % O c. 0.0668 % O d. 7.9 % Torrion test is annlied to study the properties of a material subjected to tensile force.

Answer the following questions based on the given information in the table and further calculation (if needed for any missing parameter, e.g. strain at yield point). Assume all metals started with the same shape and size before the tensile tests occurred. Material A B C D E Yield Strength (MPa) 105 600 430 355 The material that experienced the greatest percent reduction in area is material The hardest material is material The hardest material has Tensile Strength (MPa) The material that experienced the greatest percent reduction in area has 135 850 The material that experienced the largest change in shape before plastic deformation occurred is material The stiffest material is material The stiffest material has 535 365 Fracture before yielding The material that experienced the largest change in shape before plastic deformation occurred has Strain at Fracture [Choose ] [Choose ] [Choose ] [Choose ] [Choose ] [Choose ] [Choose ] [Choose ] 0.45 0.15 0.20 0.25 Fracture Strength (MPa)…

For each question, provide an explanation, identifying the correct choice ( it is marked in red)  and explaining why it's the right answer, as well as why the other options are incorrect.  Please do 1, 2.