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Black_prince [1.1K]

3 years ago

6

Help a sis out! i’ll give u a brainliest. it’s pretty easy algebra.

2 answers:

Mamont248 [21]3 years ago

6 0

U did it???? Or no I can help u

Naya [18.7K]3 years ago

5 0

Sorry gurl but I don’t even understand my own algebra

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A man weighing 800 N is hanging from a 2 mm diameter titanium wire with a cross-section of 3 x 10^-6 m^2. Will the wire break?

DENIUS [597]

Answer:

Since stress is greater than ultimate strength, the wire will break.

Step-by-step explanation:

The titanium wire is experimenting an axial load. Ultimate strength equals $2.20\times 10^{8}\,Pa$ . The wire shall break if and only if stress is at least equal to ultimate strength. The equation for axial stress ( $\sigma$ ), measured in pascals, in the wire with circular cross-section is:

$\sigma = \frac{4\cdot F}{\pi\cdot D^{2}}$ (1)

Where:

$F$ - Axial force, measured in newtons.

$D$ - Cross-section diameter, measured in meters.

Please notice that axial force is the weight of the man hanging from wire.

If we know that $F = 800\,N$ and $D = 0.002\,m$ , then the axial stress experimented by the titanium wire is:

$\sigma = \frac{4\cdot (800\,N)}{\pi\cdot (0.002\,m)^{2}}$

$\sigma \approx 2.546\times 10^{8}\,Pa$

Since stress is greater than ultimate strength, the wire will break.

3 0

3 years ago

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Aleksandr [31]

Answer:

-5

Step-by-step explanation:

$\frac{-5^5}{(-5)^2 (-5)^2}$
$\frac{-3125}{(-5)^2 (-5)^2}$
$\frac{-3125}{25(-5)^2}$
$\frac{-3125}{(25)(25)}$
$\frac{-3125}{625}$
$-5$

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3 years ago

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Harry can read 40 pages in 25 minutes. How many pages can he read in 11/2 hours?

Naddik [55]

Answer:

180 pages?

Step-by-step explanation:

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3 years ago

Please help and explain.

REY [17]

Answer:

Domain: All real numbers greater than or equal to 1.

Step-by-step explanation:

Answer 1: -14 is not in the domain

Answer 2: 4 is included in the domain

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3 years ago