Heat travels through the metal rod by conduction, as the kinetic energy is transferred from one atom to another.

According to Newton's law of cooling, the rate of heat transfer increases with an increase in temperature difference.

According to Stefan-Boltzmann law, the rate of heat radiation increases with the fourth power of the temperature, so as the temperature increases, the rate of radiation also increases.

The rate of heat transfer by radiation increases with the fourth power of the absolute temperature, according to Stefan-Boltzmann law.

According to the Stefan-Boltzmann law, if the temperature is doubled, the thermal radiation increases by a factor of 2^4 = 16, not quadruples.

According to the second law of thermodynamics, heat will flow from the hotter object to the cooler one until they reach thermal equilibrium.

Convection is not possible in a vacuum as it requires a medium (fluid) for heat transfer.

Heat exchangers primarily utilize conduction, convection, and radiation for heat transfer.

Thermal resistance refers to the resistance to heat flow through a material.

Convection is the mode of heat transfer where the temperature difference causes the fluid to move, transferring heat.

Radiation is the mode of heat transfer that occurs through electromagnetic waves, such as infrared radiation.

Radiation is the process of heat transfer that occurs without any medium.

Convection is the process of heat transfer that occurs due to the movement of fluid, where warmer areas of a liquid or gas rise and cooler areas sink.

Conduction is the process where heat is transferred through a material without any movement of the material itself.

A hot cup of coffee cooling down involves conduction (heat transfer from coffee to cup) and convection (heat transfer from cup to air).

The heat transfer coefficient in convection depends on surface area, fluid velocity, and temperature difference.

Fourier's Law of Heat Conduction states that the rate of heat transfer by conduction is directly proportional to the area and the temperature gradient.

The rate of heat transfer by conduction is directly proportional to the temperature difference between the two ends.

The Stefan-Boltzmann Law relates to radiation, stating that the total energy radiated per unit surface area is proportional to the fourth power of the black body's temperature.

The rate of heat transfer decreases with an increase in thickness, as per Fourier's Law.

During a phase change, the thermal energy remains constant as the energy is used to change the state rather than increase the temperature.

Increasing the surface area of an object increases the rate of heat transfer, as more area is available for heat exchange.

Increasing the surface area of an object increases the rate of heat transfer by radiation, as more surface is available for emitting energy.

Convection is the primary mechanism of heat transfer in liquids and gases due to the movement of the fluid.

In liquids, convection is the main mechanism of heat transfer, as the fluid moves and carries heat with it.

Convection is the mode of heat transfer that occurs through a fluid due to density differences.

Conduction is the mode of heat transfer that occurs through a solid or stationary fluid without any movement of the fluid itself.

All of the above factors affect the rate of heat transfer by conduction.

In a vacuum, heat transfer occurs primarily through radiation, as there are no particles to conduct or convect heat.

In liquids and gases, convection is the primary mechanism of heat transfer, as it involves the movement of fluid.