When you put hot coffee into a mug, the heat is transfered by CONDUCTION since they are in direct contact with each other.
Convection.
If you have something that is not actually in the process of reacting and is getting hotter or colder, heat is being transferred. (Though technically, heat is always being transferred.)
An example of heat exchange is when a warm cup of coffee transfers heat to a cooler room, causing the coffee to cool down over time. This is known as convection, where warmer substances transfer heat to cooler substances through contact.
Heat transfers. The hotter loses heat energy to the cooler.
This process is known as convection.
conduction
conduction
conduction
The process of coffee cooling down and giving up heat to the environment is irreversible since the available heat in the environment will never re-heat the coffee. I believe the process of mixing coffee grinds with hot water is also irreversible. Theoretically it would be possible but i think you would have to do work on the system to separate the two which would make it irreversible.
A heat sink is a device or fixture that transfers heat from a component, such as the CPU or processor, it acts like a radiator in which it transfers the heat into the air. Aluminum is shaped by the extrusion process which is like squeezing tooth paste out of a tube.
it transfers from heat flow
Conduction is the main process that transfers thermal energy through the metal saucepan. Heat is transferred from the heat source to the metal pan through direct contact of particles within the material.