A32.5 g cube of aluminum initially at 45.8 °c is submerged into 105.3 g of water at 15.4 °c. what is the final temperature of both substances at thermal equilibrium? (assume that the aluminum and the water are thermally isolated from everything else.)

Explanation:

At thermal equilibrium we have heat given by aluminium must be equal to the heat absorbed by the water

so we will have

so we will have

so we have

so we have

People use data and statistics to help them make important policy decisions, to identify problems in an organization, and to predict outcomes. In this unit, you studied various ways to analyze and represent data sets to determine how to best interpret the data. You also learned how to critically examine the data and account for outside factors that may influence the patterns you see in the data.

Think about the many statistical scores or rankings you receive in school, such as GPA, SAT and ACT scores, test scores, and class ranking. Describe the usefulness and limitations of these pieces of data in defining who you are as a person or as a student. In what ways do they help give a clear picture? What are they not conveying?