A pot water at a temperature of 25°C is placed on a hot burner. The temperature increases at a rate of 15° per minute until it boils at 100° C. The water continues boiling at this temperature.
What is the slope of the graph after the temperature reaches 100° C?
After the temperature reaches 100°C and the water starts boiling, the graph will be a horizontal line at 100°C. Therefore, the slope of the graph after the temperature reaches 100°C is zero.
To determine the slope of the graph after the temperature reaches 100°C, we need to understand that the slope represents the rate of change of temperature.
Since the temperature increases at a rate of 15°C per minute until it reaches 100°C, we can say that the slope is constant and equal to +15.
After reaching 100°C, the water continues boiling at this temperature. When the slope is constant, it indicates a linear relationship between time and temperature. In this case, the linear relationship has a positive slope of +15 which means that for every minute that passes, the temperature will increase by 15°C.