Modern Railway Tracks Consist of Continuous Welded-Steel Rails of 1 $\times$

question 2

Multiple Choice

Modern railway tracks consist of continuous welded-steel rails of 1.0-km lengths.If the coefficient of linear expansion of steel is 11 $\times$ 10^-6 K^-1,by how much would such a rail change in length between the highest summer temperature (40ºC) and the lowest winter temperature (-40ºC) ?

• A)44 cm
• B)88 cm
• C)0.88 mm
• D)1.8 mm
• E)4.4 cm

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Definitions:

DSM-IV

Stands for Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, a handbook used by healthcare professionals as an authoritative guide to the diagnosis of mental disorders.

Less Severe Disorder

A disorder characterized by symptoms that are of lower intensity, causing less impairment than more severe forms of the disorder.

Same Risk Factor

A component or condition that increases the likelihood of developing a disease or injury, shared across different contexts or populations.

Co-occurring SUD

The simultaneous presence of Substance Use Disorder and another psychiatric disorder in the same individual, often requiring integrated treatment approaches.