It was Place the wax in the pan and heat it until it starts to melt. Then measure its temperature.
HOPE THIS HELPS 
 
        
             
        
        
        
Free points oh i love free points
        
                    
             
        
        
        
The code chunk that lets the analyst create the phone_number column is: unite(customers, "phone_number", area_code, phone_num, sep="-"
<h3>What is a data frame?</h3>
A data frame refers to a two-dimensional array-like structure or table that is made up of rows and columns, which is typically used for storing data in R Studio using the R programming language.
In Computer programming, a data frame is a list of vectors that are all equal in length, and each column consist of values of one variable while each row consist of a set of values from each column.
<h3>The executable code in R Studio.</h3>
In this scenario, the code chunk that would be used to create a data frame that combines the two columns into a single column (phone_number) is:
- unite(customers, "phone_number", area_code, phone_num, sep="-"
 
Read more on data frame here: brainly.com/question/25558534
 
        
             
        
        
        
The cooling rate of the substance is approximately 0.0732.
According to the statement, the Newton's law of cooling is defined by the following formula: 
 (1)
Where:
 - Final temperature, in degrees Celsius.
 - Initial temperature, in degrees Celsius.
 - Time, in minutes.
 - Cooling rate, in 
.
 - Current temperature, in degrees Celsius.
Please notice that substance reaches thermal equilibrium when 
, that is when temperature of the substance is equal to the temperature of surrounding air.
If we know that 
, 
, 
 and 
, then the cooling rate of the substance is:





The cooling rate of the substance is approximately 0.0732.
To learn more on Newton's law of cooling, we kindly invite to check this verified question: brainly.com/question/13748261