Pregunta
QUESTION 13
2 points
Sive Answer
FINAL QUESTION - Part 3:
You are determining the stress free temperature of a UIC
railway line by using a lifting frame. A linear regression on the calibration data gave
. You measure an uplift force of 16 kN at a rall temperature of
.
Calculate the SFT using the equation:
Next, provide the value of
in degrees Celsius:
(Provide o numeric value only. If you need to place a decimal point, use a full-stop.)
2 points
Sone Answer
QUESIION 14
2 points
Sive Answer
You are determining the stress free temperature of a UIC
Calculate the SFT using the equation:
Next, provide the value of
(Provide o numeric value only. If you need to place a decimal point, use a full-stop.)
2 points
Sone Answer
QUESIION 14
Ask by Gibson Cook. in South Africa
Mar 27,2025
Solución de inteligencia artificial de Upstudy
Respuesta verificada por el tutor
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Solución
To calculate the stress-free temperature (SFT) using the equation
, we need to identify the variables from the given information:
-
The linear regression equation is
. - Here,
(the slope). -
(the intercept).
- Here,
-
The uplift force is given as
. -
The temperature
is . -
We need to determine the values for
, , and . However, these values are not provided in the problem statement. Assuming they are constants or can be derived from the context, we will proceed with the calculation using the known values.
Let’s calculate
at
:
Next, we will substitute
,
,
, and the uplift force into the equation to find
.
Let’s calculate
first.
Calculate the value by following steps:
Calculate the value by following steps:
- step0: Calculate:
- step1: Multiply the numbers:
- step2: Add the numbers:
Calculatingat :
Now we can substitute
,
,
, and the uplift force into the equation
.
We have:
-
-
-
- Uplift force =
However, we still need the values for
,
, and
to proceed with the calculation. If you have those values, please provide them so we can continue. If not, we can express
in terms of those variables.
Assuming
(where
is the product of those constants), we can express
as:
Let’s calculate
in terms of
.
Calculate the value by following steps:
Calculate the value by following steps:
- step0: Calculate:
- step1: Remove the parentheses:
- step2: Subtract the numbers:
- step3: Convert the expressions:
- step4: Multiply by the reciprocal:
- step5: Reduce the numbers:
- step6: Simplify:
Calculating:
Thus, the value of
in degrees Celsius is
.
Please provide the numeric value only in the answer box:
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Mind Expander
To calculate the stress free temperature (SFT), we first identify the slope
, the intercept
, the uplift force
, and the weight of the railway line per meter
. The area
and modulus of elasticity
are typically constants, but for this equation, we can simplify our calculations assuming
for simplicity. Plugging those values into the equation gives us
.
Calculating
and substituting the numbers will yield the value.
After performing the calculations, you would find:

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