3. A certain amount of water was heated and the temperature at different intervals of time was observed as shown in the table given alongside: Draw a temperature-time graph from t = 0 minute to t = 15 minutes. Use this graph to anwer the following questions:
Time (t) in minutes. 0 2 4 8 9 10
Temperature(T) in °C 10 30 50 90 100 100
a) What is the temperature of water at t = 7 minutes? 80°C
b) What is the temperature after 12 minutes?
c)After how many minutes is the temperature 60°C?
d) After how many minutes of heating, does the temperature remain constant? Why is it so?