Answer:
9.248 < < 9.253 mm
Explanation:
Given data:
standard deviation = 0.021 mm
sample mean = 9.251 mm
total sample = 409 m
confidence interval level = 95%
mean diameter of entire batch
where
- sample mean = 9.251 mm
z = critical value
plugginf all value in the above relation to get the mean diameter
9.248 < < 9.253 mm
Answer:
Hf = 0.0204 Ft.
Explanation:
See attachment for detailed answer.
Answer:
r_d= 8.1382 mm
Explanation:
In order for these two cylindrical specimen to have same deformed hardness They must be deformed by the same percentage cold worked. For the first specimen
percentage cold work =
percentage cold work= 58.13 %
For the second specimen, the deformed radius is computed using above equation and solving for radius
r_d
r_d= 8.1382 mm
Answer:
Yes
Explanation:
The core of an electromagnet serves to stabilize the magnetic field created by the wire. The thicker the core, the more metal there is to amplify the current. Therefore, a thicker core does make an electromagnet stronger. Hope this helps!