Answer:
modulus of elasticity = 100.45 Gpa,
proportional limit = 150.68 N/mm^2.
Explanation:
We are given the following parameters or data in the question as;
=> "The original specimen = 200 mm long and has a diameter of 13 mm."
=> "When loaded to its proportional limit, the specimen elongates by 0.3 mm."
=> " The total axial load is 20 kN"
Step one: Calculate the area
Area = π/ 4 × c^2.
Area = π/ 4 × 13^2 = 132.73 mm^2.
Step two: determine the stress induced.
stress induced = load/ area= 20 × 1000/132.73 = 150.68 N/mm^2.
Step three: determine the strain rate:
The strain rate = change in length/original length = 0.3/ 200 = 0.0015.
Step four: determine the modulus of elasticity.
modulus of elasticity = stress/strain = 150.68/0.0015 = 100453.33 N/mm^2 = 100.45 Gpa.
Step five: determine the proportional limit.
proportional limit = 20 × 1000/132.73 = 150.68 N/mm^2.
When an object has the same number of positive and negative charges, its electrical charge will become neutral.
What is an electric charge?
When the matter is put in an electromagnetic field, it has an electric charge, which causes it to experience a force. A positive or negative electric charge can exist.
Now when the two equal magnitude charges with opposite natures come together they become neutral.
To know more about charges follow
brainly.com/question/24391667
#SPJ4
Answer: ALL CAREFULLY ANSWERED CORRECTLY.
Explanation:
1) A loaf of Bread PHYSICAL SYSTEM
✓ How can the environment affect the edibility of the bread
✓ What are the constituents that makes up the bread
✓ What process is involved in these constituents mixing to form the loaf.
2) The law of thermodynamics makes us to understand that when heat/energy passes through a system, the systems internal energy changes with respect to the conservation of energy law. That is energy lost = energy gained. Typically, ice would melt in a cup of hot tea because of the thermal energy in the molecules of the hot tea. When you heat a material, you are adding thermal kinetic energy to its molecules and usually raising its temperature. The temperature of the ice raises due to the kinetic energy added to it and it melts to water.
3) The theory of systems view the world as a complex system of interconnected parts. If we consider the society; (financial systems, political systems, etc) we will agree that they individually have their own components and it's the summation of this components that makes the system, this implies that system thinking could be applicable in this kinda of systems as long as they are made up of components.
4) Technology has boosted every sector of our lives and it has the capacity to do more. Restricting it's importance to entertainment alone would be an underusing of its potentials. Engineering students infact should not need any drive to be encouraged about maximizing all it can do in shaping our world.
5) ~ Nature shows its splendid soul
~Never ceases to leave us in amazement
~And we are in love
the required documents is 3000