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Non-destructive Tester ... (Military - Enlisted)

Real-Life Activities

Real-Life Math

A shipping company is building a new type of ocean submersible. It will be able to go down to depths of 5,400 feet.

The company wants you, a nondestructive tester, to look at the metals and the welds. You're supposed to make sure the vessel can withstand the colder temperatures of the deep ocean. The further down into the water, the colder it gets. Cold temperatures can affect the strength of many types of metal.

"Math is quite important for nondestructive testers," says tester Blaine Whaley. "Generally we use formulas for X-raying welds on various things such as aircraft. We also use math in ultrasonic testing."

The formulas used for calculating wavelengths and angles of refraction are quite complex. They require a solid understanding of mathematics.

For your test, a bathythermograph was used to record underwater temperatures every 600 feet down in the ocean. This is a chart of the depth (in feet) and the temperature (F):

DepthTemperature
60061
1,20050
1,80045
2,40042
3,00040
3,60039
4,20038
4,80037
5,40036

Questions

  1. How many degrees warmer is it at 600 feet than 5,400 feet?
  2. What is the average temperature for all the measurements?

Contact

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  • 1-800-GO-TO-XAP (1-800-468-6927)
    From outside the U.S., please call +1 (424) 750-3900

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