A)Answer the following questions.
i) What is kinetic energy?
ii)Different between heat energy and kinetic energy.
iii) Define heat.
B)Give reason for the following.
i) If water is used in the place of mercury in thermometers what will be the problem?
(PLEASE GIVE ME THE ANSWER FIRST)
Answers
Answer:
1. energy which a body possesses by virtue of being in motion.
2. The difference between heat and thermal energy is that thermal energy is not in the process of being transferred; it is not in transit, but remains as part of the internal energy of the system; heat, on the other hand, is energy in transit, i.e. energy in the process of being transferred from a hotter system.
3. Heat is the form of energy that is transferred between systems or objects with different temperatures (flowing from the high-temperature system to the low-temperature system).
B) 1. Water cannot be used in thermometer because of its higher freezing point and lower boiling point than other liquids . If water is used in a thermometer , it will start phase change at 0oC and 100oC and will not measure temperature , out of this range .