Do all the objects gain or lose the same amount of heat at same temperature?
Not always. The rate of heat transfer from one body to another depends on the difference in temperature between the two bodies and many other factors.
How can two things have the same temperature but different heat?
Identical masses of different materials can have different amounts of thermal energy, even at the same temperature. This means that the material that makes up the substance is a third factor that affects how much thermal energy a substance has.
What happens if two objects have the same temperature?
If we have two identical objects of the same temperature, it means that the heat energy (average kinetic energy) is the same for the two objects and thus the internal energy is the same (since the mass of the objects is also the same).
How heat flows until both objects are the same temperature?
Heat Transfer: The movement of heat from a warmer object to a colder one – when two substances at different temperatures are mixed together, heat flows from the warmer body to the cooler body until they reach the same temperature (Zeroth Law of Thermodynamics – Thermal Equilibrium).
Can two bodies have same specific heat capacity?
If they are combined to form a single composite body, show that the equivalent specific heat of this composite body is independent of the masses of the individual bodies. Two bodies of specific heats `s_1 and s_2` having same heat capacities are combinated to form a single composite body.
Why is adding the same amount of heat to two objects?
Adding the same amount of heat to two different objects does not necessarily produce the same increase in temperature. Why not? Sample Answer: Different substances have different thermal properties due to differences in the way energy is stored internally in the substances.
Can two bodies have the same temperature but different heat energy?
No. Temperature is the correct variable, not heat content. Now, heat will flow between the two bodies – the question is whether there is net heat flow.
Can heat flow between two objects with the same internal energy?
Heat can flow between two objects with the same internal energy, if we will do work on it. That is, compression or expansion heat can flow from an object with less internal energy to one with more internal energy.
Is evaporation conduction or convection?
Conduction transfers heat from one object to another through physical contact. Convection transfers heat to air or water. Radiation transfers heat via infrared radiation. Evaporation transfers heat as water changes state from a liquid to a gas.
Why the heat content in two bodies may differ even though the temperature remains same?
As the temperature of the two bodies are same they are in thermal equilibrium which means there would be no transfer of heat energy between them. Flow of heat energy takes place when there is temperature difference between the bodies which are in contact with each other.
Why does adding the same amount of heat to two different objects not necessarily?
Can conduction take place when two bodies have same temperature?
No. Temperature is the correct variable, not heat content.
Under what conditions does heat flow between two?
Heat will flow from the high temperature region to the low temperature region until the temperature distribution is the same throughtout the body. Or, there may be a temperature gradient across an object. Heat will flow so as to equalize the temperature throughout the object.
How does heat transfer work with evaporation?
Evaporation: The latent heat of a fluid can be used to transfer heat by absorbing the energy required to evaporate that fluid. The heat absorbed is released by allowing the fluid to condense outside the enclosure.
Does convection include evaporation?
No. Conduction, convection, and radiation refer to the transport of energy carriers, such as phonons or electrons for conduction, bulk atom/molecule flows for convection, and photons for radiation. These three mechanisms transport heat, while evaporation simply requires heat to occur.
What happens when two bodies at different temperatures are kept in thermal contact with each other?
Also, when we take two bodies at different temperatures and place them in thermal contact with each other, then heat flows from the body at a higher temperature until they both acquire the same temperature i.e., reaches equilibrium.
When two objects with different temperatures are put in contact with each other they both achieve the same temperature after sometime Why is it so?
Heat flow. When you bring two objects of different temperature together, energy will always be transferred from the hotter to the cooler object. The objects will exchange thermal energy, until thermal equilibrium is reached, i.e. until their temperatures are equal.
What type of heat transfer is evaporation?
Evaporation is a cooling process. Latent heat of condensation is energy released when water vapor condenses to form liquid droplets. An identical amount of calories (about 600 cal/g) is released in this process as was needed in the evaporation process.
What kind of heat transfer is evaporation?
What mode of heat transfer is evaporation?
When two objects are at the same temperature and no heat flows this is called?
Two objects are at thermal equilibrium when there is no net energy transfer between them. Objects at thermal equilibrium with each other are at the same temperature and can exchange energy between them.
Which type of energy is transferred between the two objects due to the temperature difference between them?
Heat is thermal energy transferred between objects because of a temperature difference.
What is the transfer of heat from one object to another called?
The mechanism in which heat is transferred from one object to another object through particle collisions is known as conduction.
What are the 4 types of heat transfer?
Various heat transfer mechanisms exist, including convection, conduction, thermal radiation, and evaporative cooling.
What are types of heat transfer?
Heat can be transferred in three ways: by conduction, by convection, and by radiation.
- Conduction is the transfer of energy from one molecule to another by direct contact.
- Convection is the movement of heat by a fluid such as water or air.
- Radiation is the transfer of heat by electromagnetic waves.