Heat in a substance is an example of ________ energy. A. phase B. kinetic C. potential D. evaporative
2 answers:
Answer: Option (B) is the correct answer.
Explanation:
When there will be flow of energy from one substance to another then it is defined as the heat.
Since, heat is responsible for the movement of particles of a substance. This means that more if the heat more will be the kinetic energy as kinetic energy is the energy obtained by particles of a substance due to their motion.
Also, kinetic energy is directly proportional to temperature.
K.E =
So, more is the temperature of an object more will be heat transferred by it. Therefore, more will be its kinetic energy.
Thus, we can conclude that heat in a substance is an example of kinetic energy.
You might be interested in
Answer : It takes less amount of heat to metal 1.0 Kg of ice.
Solution :
The process involved in this problem are :
Now we have to calculate the amount of heat released or absorbed in both processes.
<u>For process 1 :</u>
where,
= amount of heat absorbed = ?
m = mass of water or ice = 1.0 Kg
= enthalpy change for fusion =
Now put all the given values in , we get:
<u>For process 2 :</u>
where,
= amount of heat absorbed = ?
m = mass of water = 1.0 Kg
= specific heat of liquid water =
= initial temperature =
= final temperature =
Now put all the given values in , we get:
From this we conclude that, that means it takes less amount of heat to metal 1.0 Kg of ice.
Hence, the it takes less amount of heat to metal 1.0 Kg of ice.