[单选题]
Water in a beaker is heated:pl 4xf y(k7dx on a hot plate8.+um )yvq0abgo*(kmu.u exe at a rate P. The graph shows the change in temba)xmu um*k0ugv+y . .eeqo(8 perature of the water over time.
Which graph correctly shows the new change in temperature of the water when the rate of thermal energy transfer is increased?
The original graph is shown by the dotted line.
A.
B.
C.
D.
参考答案: D
本题详细解析: Explanation:
When the power increases, the temperature will rise more quickly, giving a larger gradient for the first part.
The change of state will occur at the same temperature as the original graph but take less time to complete.
