Does the required time to heat a body from 20°C to 40°C the same as from 40°C to 60°C?
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Yes. The amount of energy to go up one degree doesn’t change much on temperature.
There are 2 broad exceptions. If something melts or boils in that temperature range then that’s not going to work. Also the hotter something gets the faster it loses heat to the surrounding environment, so if you lose heat too fast it’s going to be harder to warm something.
Depends. The energy needed go heat a body from 20 to 40 and 40 to 60 is basically the same.
But the rate of heat transfer can depend on the temperature. And since you didn’t specify what method of heating then there’s no real answer
Yes. The amount of energy to go up one degree doesn’t change much on temperature.
There are 2 broad exceptions. If something melts or boils in that temperature range then that’s not going to work. Also the hotter something gets the faster it loses heat to the surrounding environment, so if you lose heat too fast it’s going to be harder to warm something.
Depends. The energy needed go heat a body from 20 to 40 and 40 to 60 is basically the same.
But the rate of heat transfer can depend on the temperature. And since you didn’t specify what method of heating then there’s no real answer
Depends. The energy needed go heat a body from 20 to 40 and 40 to 60 is basically the same.
But the rate of heat transfer can depend on the temperature. And since you didn’t specify what method of heating then there’s no real answer
Heat transfer operates on the temperature difference between the hot thing and the cold thing. As that temperature difference gets smaller, less heat is transferred between the two objects. Eventually, they reach the same temperature and no heat is transferred.
Using this knowledge, starting at 20 C, your object gains more heat per unit time and thus heats faster than the same object would starting at 40 C, also assuming the heat “giver” is the same each time.
Of course, this is a complicated subject with several university courses devoted to it. Materials tend to change their thermodynamic properties as their temperatures change so you can get really large and complex (and unsolvable!) equations to determine how much heat is transfered in certain scenarios
Heat transfer operates on the temperature difference between the hot thing and the cold thing. As that temperature difference gets smaller, less heat is transferred between the two objects. Eventually, they reach the same temperature and no heat is transferred.
Using this knowledge, starting at 20 C, your object gains more heat per unit time and thus heats faster than the same object would starting at 40 C, also assuming the heat “giver” is the same each time.
Of course, this is a complicated subject with several university courses devoted to it. Materials tend to change their thermodynamic properties as their temperatures change so you can get really large and complex (and unsolvable!) equations to determine how much heat is transfered in certain scenarios
Heat transfer operates on the temperature difference between the hot thing and the cold thing. As that temperature difference gets smaller, less heat is transferred between the two objects. Eventually, they reach the same temperature and no heat is transferred.
Using this knowledge, starting at 20 C, your object gains more heat per unit time and thus heats faster than the same object would starting at 40 C, also assuming the heat “giver” is the same each time.
Of course, this is a complicated subject with several university courses devoted to it. Materials tend to change their thermodynamic properties as their temperatures change so you can get really large and complex (and unsolvable!) equations to determine how much heat is transfered in certain scenarios
Yes, except that the greater the difference in temperature the faster heat moves. So as the hot thing gets hotter it will lose heat to its surroundings faster, which means it will take longer to increase its temperature – and as the hot thing heats up it will be closer in temperature to the thing giving it heat which also means it will take longer.
Yes, except that the greater the difference in temperature the faster heat moves. So as the hot thing gets hotter it will lose heat to its surroundings faster, which means it will take longer to increase its temperature – and as the hot thing heats up it will be closer in temperature to the thing giving it heat which also means it will take longer.
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