Answer:
Heat transfer is a part of thermal engineering that deals with the generation, use, conversion, and exchange of thermal energy between physical systems.
Conduction: Transfer of heat by the direct collision of molecules.
Convection: Transfer of heat by carrying thermal energy along with the fluid being heated and moving away from the source.
Radiation: Transfer of heat by the emission of electromagnetic waves.
examples of heat transfer:
Conduction:
Touching a stove and being burned
Ice cooling down your hand
Boiling water by thrusting a red-hot piece of iron into it
Convection:
Hot air rising, cooling, and falling (convection currents)
An old-fashioned radiator (creates a convection cell in a room by emitting warm air at the top and drawing in cool air at the bottom).
Radiation:
Heat from the sun warming your face
Heat from a lightbulb
Heat from a fire
Heat from anything else which is warmer than its surroundings.
Canada and the United States are the largest trading partners with each other
Answer:
Explanation:
B)
The country could not pay its outstanding debt.
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In 1983, David Seth Kotkin ( Better known as David Copperfield,) made the Statue of Liberty disappear in front of a live audience on Liberty Island.
Answer: The Rosetta Stone is a stone with writing on it in two languages (Egyptian and Greek), using three scripts (hieroglyphic, demotic and Greek)
Explanation: The Rosetta Stone is written in three scripts because when it was written, there were three scripts being used in Egypt.