Answer:
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Explanation:
Answer:
a) 
, b) 
Explanation:
The Brinell hardness can be determined by using this expression:
Where 
and 
are the indenter diameter and the indentation diameter, respectively.
a) The Brinell hardness is:
![HB = \frac{2\cdot (1000\,kgf)}{\pi\cdot (10\,mm)^{2}} \cdot \left[\frac{1}{1-\sqrt{1-\frac{(2.50\,mm)^{2}}{(10\,mm)^{2}} } } \right]](https://tex.z-dn.net/?f=HB%20%3D%20%5Cfrac%7B2%5Ccdot%20%281000%5C%2Ckgf%29%7D%7B%5Cpi%5Ccdot%20%2810%5C%2Cmm%29%5E%7B2%7D%7D%20%5Ccdot%20%5Cleft%5B%5Cfrac%7B1%7D%7B1-%5Csqrt%7B1-%5Cfrac%7B%282.50%5C%2Cmm%29%5E%7B2%7D%7D%7B%2810%5C%2Cmm%29%5E%7B2%7D%7D%20%7D%20%7D%20%20%5Cright%5D)
b) The diameter of the indentation is obtained by clearing the corresponding variable in the Brinell formula:
![d = (10\,mm)\cdot\sqrt{1-\left[1-\frac{2\cdot (500\,kgf)}{\pi\cdot (300)\cdot (10\,mm)^{2}} \right]^{2}}](https://tex.z-dn.net/?f=d%20%3D%20%2810%5C%2Cmm%29%5Ccdot%5Csqrt%7B1-%5Cleft%5B1-%5Cfrac%7B2%5Ccdot%20%28500%5C%2Ckgf%29%7D%7B%5Cpi%5Ccdot%20%28300%29%5Ccdot%20%2810%5C%2Cmm%29%5E%7B2%7D%7D%20%20%5Cright%5D%5E%7B2%7D%7D)
Answer:
1)f
thats all i know sorry ;-;
Answer:
d) The elastic potential energy is at its maximum when the velocity of the ball is a maximum.
Explanation:
The total energy in a simple harmonic motion is the sum of its kinetic and potential energy.
Option D is false because when the velocity of the ball is at its maximum, the kinetic energy is maximum, and when the kinetic energy is at maximum, the elastic potential energy will be at minimum.
Answer:
step1: define the problem
step2: do background research
step3: specify requirements
step 4: brainstorm evaluate and choose solution
step 5:develop and prototype solution
step 6: test solution
step 7: does your solution meet the requirements
step 8: communicate results
