Answer:
A) ν = 0.292
B) ν = 0.381
Explanation:
Poisson's ratio = - (Strain in the direction of the load)/(strain in the direction at right angle to the load)
In axial tension, the direction of the load is in the length's direction and the direction at right angle to the load is the side length
Strain = change in length/original length = (Δy)/y or (Δx)/x or (ΔL/L)
A) Strain in the direction of the load = (2.49946 - 2.5)/2.5 = - 0.000216
Strain in the direction at right angle to the load = (7.20532 - 7.2)/7.2 = 0.0007389
Poisson's ratio = - (-0.000216)/(0.0007389) = 0.292
B) Strain in the direction of the load = (2.09929 - 2.1)/2.1 = - 0.0003381
Strain in the direction at right angle to the load = (5.30470 - 5.3)/5.3 = 0.0008868
Poisson's ratio = - (-0.0003381)/(0.0008868) = 0.381
Answer:
If it is rechargable, there should be instructions on it, but I believe you can recycle it. For single use batteries, they need to be put into a safe location as they can actually explode sometimes, and acid leaks can also occur.
Normally, you can use put something like electrical tape or a nonconductive material on top of both of the battery nodes and you can just toss it into a trash can.
Explanation:
Answer:In fact, engineers have completely changed the world we live in, from modern homes, bridges, space travel, cars and the latest mobile technology. Innovative ideas are at the heart of what engineers do, and they use their knowledge to create new and exciting prospects and solve any problems that may arise.
Explanation:
yea:D
The answer is c. 4 seconds
Answer:
a)
, b) ![COP_{R} = 29](https://tex.z-dn.net/?f=COP_%7BR%7D%20%3D%2029)
Explanation:
a) The thermal efficiency is:
![\eta = \frac{\dot Q_{in} - \dot Q_{out}}{\dot Q_{in}}\times 100\,\%](https://tex.z-dn.net/?f=%5Ceta%20%3D%20%5Cfrac%7B%5Cdot%20Q_%7Bin%7D%20-%20%5Cdot%20Q_%7Bout%7D%7D%7B%5Cdot%20Q_%7Bin%7D%7D%5Ctimes%20100%5C%2C%5C%25)
![\eta = \frac{1\,MW-0.58\,MW}{1\,MW} \,\times 100\,\%](https://tex.z-dn.net/?f=%5Ceta%20%3D%20%5Cfrac%7B1%5C%2CMW-0.58%5C%2CMW%7D%7B1%5C%2CMW%7D%20%5C%2C%5Ctimes%20100%5C%2C%5C%25)
![\eta = 42\,\%](https://tex.z-dn.net/?f=%5Ceta%20%3D%2042%5C%2C%5C%25)
b) The coefficient of performance is:
![COP_{R} = \frac{\dot Q_{L}}{\dot W}](https://tex.z-dn.net/?f=COP_%7BR%7D%20%3D%20%5Cfrac%7B%5Cdot%20Q_%7BL%7D%7D%7B%5Cdot%20W%7D)
![COP_{R} = \frac{0.58\,MW}{0.02\,MW}](https://tex.z-dn.net/?f=COP_%7BR%7D%20%3D%20%5Cfrac%7B0.58%5C%2CMW%7D%7B0.02%5C%2CMW%7D)
![COP_{R} = 29](https://tex.z-dn.net/?f=COP_%7BR%7D%20%3D%2029)