When a Steel Cookie Sheet Is Placed in an Oven $$\Delta _ { A } = A _ { 0 } \gamma \Delta T$$

question 28

Essay

When a steel cookie sheet is placed in an oven and heated up, it expands due to the
temperature change.The change in area of the cookie sheet is modeled using the following
equation: $$\Delta _ { A } = A _ { 0 } \gamma \Delta T$$
where
$$\begin{array} { l } \Delta _ { A } = \text { change in area in } \mathrm { mm } ^ { 2 } \\A _ { 0 } = \text { original area in } \mathrm { mm } ^ { 2 } \\\gamma = \text { area coefficient of thermal expansion } \\\Delta _ { T } = \text { change in temperature in } { } ^ { \circ } \mathrm { C }\end{array}$$
What is the appropriate unit for $\gamma$ if the preceding equation is to be homogeneous in units?

---

Definitions:

Social Media Crises

Situations that result in negative publicity and damage to a brand's reputation on social media platforms, often requiring immediate and strategic responses.

Press Releases

Official statements issued to newspapers and other media for the purpose of providing information, an official statement, or making announcements.

Social Media Assets

Valuable content or profiles within social media that can be leveraged for marketing or branding purposes.

Strategic Briefs

Documents that outline the objectives, target audience, messaging, and tactics for marketing campaigns or projects.