Heated bricks or blocks of iron were used by the wealthy long ago to warm beds. A 1.49 kg block of iron heated to 155 o C would release how many Joules of heat as it cooled to 22 o C ? What amount of water has been cooled if removing 550 cal of energy changes the temperature of the water from 85.0 o C to 50.0 o C ? Heat Transfer: The Different Ways Heat Is Transferred

Heat transfer: How heat is transferred in different ways
Transferring thermal energy from one object into another is known as heat transfer. There are three ways heat can be transmitted: radiation, convection and conduction. Conduction refers to the direct transfer of heat, as in when a spoon of metal is placed into hot soup. Heat is transferred from soup to spoon. Convection refers to the movement of heat through liquid or gas. For example, hot air rising from a radiator can cause convection. Convection is the transfer of heat from the radiator to air. Radiation is also the transmission of heat via electromagnetic waves. For example, when the sun heats up the earth, this is radiation. Heat is transferred between the sun and the earth by Munson et. al., 2017. The specific heat capability of each object, their temperature difference, and time taken to transfer heat will all affect the amount of heat being transferred. The specific heat capacity refers to the energy needed to increase the temperature by one degree Celsius. Material with higher specific heat capabilities will heat faster, but remain hotter for longer. Temperature difference is the temperature difference between two items. It refers to the temperature difference required for heat transfer…
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