Answer: A
Explanation: because it shows 10 ahead
Answer:
Hello your question lacks some vital parts here is the complete question
Determine Er(10) for this material (in Mpa) If the initial stress level was 2.76 Mpa (400psi) which dropped to 1.72 Mpa(250psi) after 60s
Answer: Er(10) for the material = 2.55 / 0.69 = 3.695 ≈ 3.70 Mpa
Explanation:
The equation of stress decay for viscoelastic polymers
equation 1
t = elapsed time = 60s
T = relaxation time
input the given values into the equation
1.72 = 2.76 exp ( -
exp ( - 60/T ) = 1.72/2.76 therefore T = 126.87S
Considering 10s for t
taking Ln of both sides of the equation
Ln
therefore = 370 psi
To determine the Er(10) for the material in (Mpa) we apply the relaxation modulus equation
Er(t) =
where Eo = strain level = 0.69
Er(t) = E(10)
= 2.55 Mpa
input this variables into equation
Er(10) for the material = 2.55 / 0.69 = 3.695 ≈ 3.70 Mpa
Answer:
a)
b)
Explanation:
From the question we are told that:
Cast-iron block Dimension:
Length
Width
Feed
Depth
Diameter
Number of cutting teeth
Rotation speed
Generally the equation for Approach is mathematically given by
Therefore
Effective length is given as
a)
Generally the equation for Machine Time is mathematically given by
Where
Therefore
b)
Generally the equation for Material Removal Rate. is mathematically given by
The response to whether the statements made by both technicians are correct is that;
D: Neither Technician A nor Technician B are correct.
<h3>Radio Antennas</h3>
In radios, antennas are the means by which signals to the sought frequency be it AM or FM are received.
Now, if the antenna is bad, it means it cannot pick any radio frequency at all and so Technician A is wrong.
Now, most commercial antennas usually come around a resistance of 60 ohms and so it is not required for a good antenna to have as much as 500 ohms resistance and so Technician B is wrong.
Read more about Antennas at; brainly.com/question/25789224