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navik [9.2K]
3 years ago
15

HELP I NEED ANSWER ASAP! I WILL GIVE BRAINLIEST TO 1ST CORRECT ANSWER!!!?

SAT
1 answer:
SpyIntel [72]3 years ago
7 0
The answer is D

surface tension is the result of the tendency of water molecules to attract one another

Hope I helped !
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Max (mass = 15 kg) is hanging from one end of a 13-m long bungee cord that has its other end fixed to a bridge above. The bungee
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The stress experimented by the bungee cord due to Max's weight is approximately 299.680 kilopascals.

<h3>How to find the stress experimented by the bungee cord</h3>

Let suppose that the stress (\sigma), in pascals, experimented by the bungee cord is entirely <em>elastic </em>and <em>uniform</em>. By Newton's Laws we know that the tension (T), in newtons, experimented by the cord equals Max's weight. The stress on the bungee cord is axial and is described by following formula:

\sigma = \frac{m\cdot g}{\frac{\pi\cdot D^{2}}{4} }   (1)

Where:

  • m - Max's mass, in kilograms
  • g - Gravitational acceleration, in meters per square second
  • D - Diameter of the circular cross section, in meters

If we know that m = 15\,kg, g = 9.807\,\frac{m}{s^{2}} and D = 0.025\,m, then the stress experimented by the bungee cord is:

\sigma = \frac{(15\,kg)\cdot \left(9.807\,\frac{m}{s^{2}} \right)}{\frac{\pi}{4}\cdot (0.025\,m)^{2} }

\sigma \approx 299679.845\,Pa\, (299.680\,kPa)

The stress experimented by the bungee cord due to Max's weight is approximately 299.680 kilopascals. \blacksquare

To learn more on stress, we kindly invite to check this verified question: brainly.com/question/1178663

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