Attached is the solution to the above question.
Answer:
a. Rockwell 3. hardness
b. Instron 2. stress vs strain
c. Charpy 1. impact strength
d. Fatigue 4. Endurance Limit
e. Brinell 3. hardness
f. Izod 1. impact strength
Explanation:
Izod and Charpy are the impact strength testing procedure of a material in which a heavy hammer is attached to an arm is released to impact on the test specimen. In Izod test the specimen with v-notch is held vertical with the notch facing outward while in Charpy test the specimen is supported horizontally with notch facing inward to the impacting hammer.
Instron testing system does universal testing of the material which gradually applies the load recording all the stresses and the corresponding strains until the material fails.
Fatigue is the property of a material due to which it fails under the repeated cyclic loading by the initiation and propagation of cracks. The property of a material resist failure subjected to infinite number of repeated cyclic loads below a certain stress limit.
Rockwell and Brinell are the hardness testing methods. In Rockwell test an intender ball is firstly pressed against the specimen using minor load for a certain time and then a major load is pressed against it for a certain time. After the intender is removed the depth of impression on the surface is measured while in case of Brinell hardness we apply only one load against the intender ball for a certain time and after its removal the radius of impression is measured.
Answer:
NASA stands for National Aeronautics and Space Administration
Explanation:
***BRAINLIEST***
In this article, the authors talk about the importance of cybersecurity. Cybersecurity refers to the practice of protecting systems, networks and programs from digital attacks. The authors propose several ways in which we can approach cybersecurity. However, the one that they recommend the most is that of end user education.
End user education refers to the practice of informing your users of the dangers of the internet. This can take place at an individual level or at a corporate level. I do believe that the best way to prevent a cyber attack is through end user education. This is because users are the first line of defense in this situation. They are the ones who are usually contacted, as well as those who can best protect your system against problems.
Answer:
C) Entropy is a property of system.
Explanation:
Entropy is the measurement of randomness of any system.It is the property of system.
Change in entropy of reversible process will be zero but on the other hand the change in entropy of irreversible system process will greater than zero.
The Entropy of universe is the summation of entropy of system and entropy of surrounding.The entropy of universe can not be negative.It can be only zero(in case of reversible process) and greater than zero(in case of irreversible process).
So we can say that Entropy is a property of system.