Answer / Explanation:
On the basis of the test result, Ultimate strength which is mostly known as the ultimate tensile strength is the strength attached to the ability or capacity of a structural element or material used in the test to withstand elongation forces or pull force applied to it.
WHILE,
True stress at fracture can be classified as stress or load associated to the point where yielding or fracture occurred divided by the cross-sectional area at the yield point.
Answer:
1). Linear and syndiotactic poly(vinyl chloride); linear and isotactic polystyrene
2). Network phenol-formaldehyde; linear and heavily crosslinked cis-isoprene
3). Linear polyethylene, lightly branched isotactic polypropylene
Explanation:
1). It is very much possible to decide for the two polymers. Here the linear as well as the syndiotactic poly(vinyl chloride) are likely to be crystallize; the side - group phenyl of the polystyrene is more bulkier than CI side group for the poly(vinyl chloride). The syndiotactic as well as the isotactic isomers are likely to crystallize equally.
2). No we cannot decide for the two polymers. Both of them are crosslinked and the network polymers may not crystallize.
3). It is a possible to decide the two polymers. The linear polyethylene is likely to crystallize.
Answer:
40π
Explanation:
First, find the limits (intersections).
5x² = 30x − 10x²
15x² − 30x = 0
x² − 2x = 0
x (x − 2) = 0
x = 0 or 2
Within this interval, 30x − 10x² is greater than 5x².
Dividing the volume into cylindrical shells, the volume of each shell is:
dV = 2π r h t
dV = 2π x (30x − 10x² − 5x²) dx
dV = 2π x (30x − 15x²) dx
dV = 30π (2x² − x³) dx
The total volume is the sum (integral):
V = ∫ dV
V = ∫₀² 30π (2x² − x³) dx
V = 30π ∫₀² (2x² − x³) dx
V = 30π (⅔ x³ − ¼ x⁴)|₀²
V = 30π (⅔ 8 − ¼ 16)
V = 30π (16/3 − 4)
V = 10π (16 − 12)
V = 40π
Answer:
When the imposter is sus : O
Explanation:
