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stealth61 [152]
3 years ago
5

A function, f(x), represents the distance, in miles, that sarah drives each hour, x. Select the appropriate domain for this situ

ation.
A. The set of all positive integers.
B. The set of all real numbers.
C. The set of all real numbers greater than or equal to zero.
D. The set of all integers.
Mathematics
1 answer:
rusak2 [61]3 years ago
8 0
I would think that the answer is C because her distance is always increasing as long as shes moving, it isn't asking for direction, so no matter if she goes forward then backwards then forwards again she has still traveled that distance, so I believe its C because you can't go negative distance, even if you go backwards
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Complete part of Question:

Assume a factor of safety of 3.0

The Maximum stress versus logarithm of the number of cycles to fatigue failure curve for 2014-T6 Aluminium bar is attached to this solution

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The maximum allowable load amplitude is 6403.33 N

Step-by-step explanation:

diameter of the bar, d = 12 mm

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Cross sectional area of the bar, A = πd²/4

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From the Maximum stress versus logarithm of the number of cycles to fatigue failure for 2014-T6 Aluminium bar attached to this solution;

At 10⁷ cycles, Maximum stress, S = 170 MPa

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\sigma = S/N\\\sigma = \frac{170 * 10^{6} }{3} \\\sigma = 56.67 * 10^{6} N/m^{2}

The tensile stress is also given by:

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F/0.000113 = 56.67 * 10⁶

F = 56.67 * 10⁶ * 0.000113

F = 6403.33 N

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