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The second law of thermodynamics is based on the idea that heat will only spontaneously flow from a region of higher temperature to a region of lower temperature. Obviously, since we have refrigerators, we have found a way to pump heat from an area of lower temperature into an area of higher temperature by performing some work, but
#1 it requires work to make it happen - it doesn't happen spontaneously
#2 when you look at the details of the process you will always find one or more steps where heat is moving from a region of higher temperature to a lower temperature, but never a step where it moves from lower to higher.
It's just that the net effect is to move energy out of a colder region to a warmer one. The net change is always an increase in entropy
What else can I help you with?
Are bugs cold or warm blooded?
Depeneds insects are warm some bugs are cold.
Why does water go down in a cold place and hot water goes up in an airtight placve?
Water goes down in a cold place because cold water is denser than warm water, causing it to sink. In an airtight place, hot water rises because it is less dense than the cold air surrounding it, creating a convection current that makes the hot water move upwards.
What side of insulation is warm and what side is cold?
Insulation works by slowing down heat transfer, so there isn't a specific side that is warm or cold. In a winter scenario, insulation helps to keep the warm air inside, while in summer, it helps to keep the hot air outside. The direction of heat flow determines which side feels warm or cold.
Does convection take place when cold airis less dense than warm air?
No, convection occurs when warm air, which is less dense, rises and cold air, which is denser, sinks. This process creates a cycle of air movement where warm air is replaced by cooler air, facilitating heat transfer. If cold air were less dense than warm air, it would not rise, disrupting the convection process.
What will happen to cold-blooded animals if there is no heat energy?
They won't be able to move. Cold-blooded animals need the heat to warm them up, so they will be able to move.
Does heat flow from a source that is warm to a source that is cold?
Heat does, indeed, go from a warm source to a cold place. That is what heat always does.
What can warm-blooded animals do that cold-blooded cannot do?
Warm blooded animals can generate their own heat in a cold enviorment. Cold blooded animals change their temperature if they are in a cold place their body temperature changes cold if they are in a warm place it changes warm. Temperature change
What could be wrong if your 2002 alero's heater air is warm-- then goes cold--then the thermostat goes up and then the heat is warm again and the thermostat goes back down?
Souns like a head gasket to me.
Does wind move from a warm place to a cool place?
Warm air rises over cold air when a warm and cold front connect.
What does a warm mean?
a warm mean a place that is warm not hot or not to cold.
Can I heat cold brew coffee to make it warm?
Yes, you can heat cold brew coffee to make it warm. Simply heat it in the microwave or on the stove until it reaches your desired temperature.
What Moves cold air out and warm air in?
warm air rises cold air goes down sinks
How does warm fronts developed?
warm air goes over cold air.
Is plutonium cold or warm?
Plutonium is warm; the cause is the heat released by radioactive decay.
How heat and cold affect rocks?
Heat and cold affect/break the rocks when the weather changes .. The weather changes : 1. Warm/Very Warm/Calm Warm 2. Cold/Very Cold/Calm Cold I hope this answer helps ... - just visit me at facebook @DannahMarie .... like it or not that's my OFFICIAL ANSWER ...
What is the transfer of heat energy?
thermal energy. The transfer of heat happens when a warm fast moving molecule run into slow a cold ones the heat is then transferred from the warm molecule to the cold oneAnswerHeat is energy in transit from a higher temperature to a lower temperature. Heat isn't transferred; heat describes the process of transfer.
Would polar bears be comfortable in a warm place?
No it would not be comfortable!A polar bear will not be comfortable in a warm place its youst to the cold in its home if you take that animal away from home the animal will have to much heat and might die.
