Waiting for answer This question has not been answered yet. You can hire a professional tutor to get the answer.
QUESTION
A fire apparatus was left outside for maintenance with temperatures in the low 20s as a result the pump was frozen.
A fire apparatus was left outside for maintenance with temperatures in the low 20s as a result the pump was frozen. In order to place the apparatus back in service you forced a __________ change by adding energy to melt the ice.
biochemical
organic
chemical
physical
