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A steel cube is being subjected to principal stresses σ1, σ2, and σ3 from x, y, z sides. Under what constraint, according to Tresca, will the cube never fail/yield/break, regardless of how much you increase the value of σ1, σ2, and σ3 ?

Q2 subpart Write all the process needed to find the maximum shear stress in the beam. Starting from the original diagram with the gear and the force.  *****************************************************************************  Type step by step, and in order. For each intermediate step: type what you’ll do, what formula you’ll use, and what will be result of that formula. For example: “…Next I’ll use the torsion shear stress formula tau = Tc/J, where T = 400 Nm from the diagram, c = radius of shaft = 0.01m, J = polar moment of inertia = pi*c^4 /2. This gives tau = 254.65 MPa.  Next, I’ll use this tau in….” Consider using bullets.  If you know what you are doing, you only need to type 3-5 ish complete sentences like above. Long essays are not necessary… ******************************************************************************

Q2 subpart Rounded to the nearest integers, what are the magnitudes of three principle stresses at the location above?σ1 = [1011]  MPaσ2 = [zero] MPaσ3 = [56] MPa Only enter positive INTEGER numbers, no units, no space. They will be three different numbers and |σ1| > |σ2| > |σ3|. 

Which of the following structures is NOT a blood vessel found in osseous tissue (compact bone)?

Which structure is present in long bones, but not in irregular bones?

The striations in skeletal and cardiac muscle are _____________.

All irregular bones are present in the axial skeleton ONLY.

On your paper, place the missing information to complete the chemical reaction. (6 pts each, 24 pts total)

A developmental researcher records the following behaviors in one infant over several months. At 2 months, the infant repeatedly brings her thumb to her mouth and sucks it, appearing to enjoy the sensation. At 5 months, she repeatedly shakes a rattle to produce the sound, again and again. At 4 months, when a toy she was reaching for is covered with a cloth, she behaves as though it has simply vanished and stops reaching. By 9 months, she actively pushes aside a pillow to recover a toy she watched being hidden, and she has also begun to cry when her mother leaves the room. Respond to all three parts: (a)  Identify and distinguish primary circular reactions from secondary circular reactions, using the thumb-sucking and rattle examples to illustrate the difference. (b)  Explain the concept of object permanence and use the 4-month and 9-month behaviors to argue whether the infant has developed it. Connect this cognitive change to the emergence of separation anxiety. (c)  State one limitation or criticism of Piaget’s account of sensorimotor development that researchers have raised.

Consider two families with preschoolers. The Reyes parents set clear, reasonable rules, explain their reasoning, and respond warmly to their daughter’s needs; their daughter tends to be friendly, self-reliant, and cooperative. The Coleman parents demand strict, unquestioned obedience, rarely explain their rules, and show little warmth. Their son, Drew, frequently hits other children to take their toys. The Colemans also let Drew watch several hours of aggressive cartoons each day and often spank him when he misbehaves. Meanwhile, in the same classroom, another child spontaneously shares her snack and comforts a crying classmate. Respond to all three parts: (a)  Identify the parenting style of each set of parents using Baumrind’s categories, and predict the social outcomes typically associated with each style. (b)  Use Bandura’s social learning theory to explain how Drew may have learned his aggressive behavior. Reference the role of modeling and observational learning. (c)  Explain what prosocial behavior is and describe two specific strategies parents or teachers can use to encourage it in preschoolers.