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liraira [26]
3 years ago
7

Please help due today

Engineering
2 answers:
nika2105 [10]3 years ago
8 0
Calculator
Telescope
Ruler
Microscope
aksik [14]3 years ago
5 0
Performs math operations = calculator
view planets, stars, and objects in space = telescope / measure the length of a piece of paper = ruler / study a petri dish containing bacteria = microscope
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What’s the population in the world and why does it keep increasing in bad areas.
Natalija [7]
I dont know the pop but usually in bad areas people can’t afford many things and their health is bad and so people die at younger ages. So when the stress rate is high and the population increases, people start having their life’s at young ages. This makes the population increase more.
5 0
4 years ago
What should I do in life?
neonofarm [45]

Answer:

anything you dream

Explanation:

because everying is worth trying :)

7 0
2 years ago
Read 2 more answers
Explain the purpose of the checkpoint mechanism. How often should checkpoints be performed?How does the frequency of checkpoints
Olegator [25]

Explanation:

Answer:

1) Check point mechanism is a system, point or mechanism within the database management system that allows for data, information, transactions and general logs passed through the system be retrieved and stored into a separate storage system and talking about how often the check point should be performed, it is advised that checkpoint should be done as often as possible because the more often the checkpoints is done, the lower the probability that obsolete data will be updated or retrieved during the checkpoint process.

How does the frequency of check point affects system performance when no failure occurs?

Answer: When failure does not occur, the process of checkpoint mechanism have only succeeded in accruing unnecessary cost of performing the process which at this time would have been necessary.

How does the frequency of check point affects the time it takes to recover from a system crash ?

Answer: It is important to note that the purpose of a check point mechanism in the first place is for us to be able to recover our data in the database before a time when the database became corrupt. So if we constantly run the process of check point mechanism, it will drastically reduce the time it takes to recover from a system crash because we would have previously detected obsolete data and updated the system before the crash.

How does the frequency of check point affects the time it takes to recover from a disk crash?

Answer: This can also be related to the same time of recovery as that of the system crash.  We can substitute the answer for time to recover from a system crash for that of a disc crash also. The only difference here is that it applies to a disc.

3 0
3 years ago
What impact does modulus elasticity have on the structural behavior of a mechanical design?
devlian [24]

Answer with Explanation:

The modulus of elasticity has an profound effect on the mechanical design of any machine part as explained below:

1) Effect on the stiffness of the member: The ability of any member of a machine to resist any force depends on the stiffness of the member. For a member with large modulus of elasticity the stiffness is more and hence in cases when the member has to resist a direct load the member with more modulus of elasticity resists the force better.

2)Effect on the deflection of the member: The deflection caused by a force in a member is inversely proportional to the modulus of elasticity of the member thus in machine parts in which we need to resist the deflections caused by the load we can use materials with greater modulus of elasticity.

3) Effect to resistance of shear and torque: Modulus of rigidity of a material is found to be larger if the modulus of elasticity of the material is more hence for a material with larger modulus of elasticity  the resistance it offer's to shear forces and the torques is more.

While designing a machine element since the above factors are important to consider thus we conclude that modulus of elasticity has a profound impact on machine design.

8 0
3 years ago
If you know that the change in entropy of a system where heat was added is 12 J/K, and that the temperature of the system is 250
SVEN [57.7K]

Solution:

Given:

Change in entropy of the system, ΔS = 12J/K

Temperature of the system, T_{o} = 250K

Now, we know that the change in entropy of a system is given by the formula:

ΔS = \frac{\Delta Q}{T_{o}}

Amount of heat added, ΔQ = \Delta S\times T_{o}

ΔQ = 3000J

3 0
3 years ago
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