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Why is heat sometimes positive or negative?
Because heat can either be hot which is positive, or cold which is negative. Hot and cold are relative terms which means it is a comparison to another temperature.
When what flows into a system it's value is positive when heat flows out of the system it's value is negative?
heat. apex.
Why are the values for work done on isothermal and adiabatic compression negative?
Don't know but I believe the following is consistent with the history and development of thermodynamics. Thermodynamics first tackled analysis of a "heat engine" which, at the time, essentially meant a steam engine. By convention, an engine produced a work output which logically was positive (it would be poor marketing to sell a negative 1000 kw engine). The fuel used was positive - more acurately, the fuel produced by burning the fuel put positive heat into the engine. Again, by convention, heat in is positive and work out is positive. Note that heat coming out would be heat taken away ... subtracting heat or negative heat. So why does compressing a gas involve negative work? Gas expansion is the basic positive work producing process for heat engines and, since 1) compression is the opposite of expansion and 2) the total work needed to reversibly compress and expand a gas (back to the initial condition) is zero, then Work compression + Workexpansion = 0 so they better have opposite signs. The idea of work in and work out is closely tied to the idea of control volume. TSM
Is geothermal consider a positive or negative?
By Geothermal, i presume that you mean geothermal energy, and if so, then yes it is positive, as the heat can be used to heat up the water to turn it into steam, to drie the electricity generators, making this a clean and free method of producing electricity. However, these are usually found near volcanoes, so check out the surrounding land and do some research on the volcano.
What is a negative - positive?
Negative * positive = negative Positive * positive = positive Negative * negative = positive
When heat flows into a system its value is When heat flows out of a system its value is negative?
When heat flows into a system, its value is positive because the system is gaining heat energy. When heat flows out of a system, its value is negative because the system is losing heat energy.
When heat flows into the system the sign of heat is negative?
No, when heat flows into a system, it is considered positive. Positive heat indicates heat is being added to the system, increasing its internal energy. Negative sign would indicate heat is being lost or leaving the system.
When heat flows into a system its value is positive. When heat flows of a system its value is negative.?
when heat flows Out of a system
When flows into a system its value is positive. When heat flows out of a system its value is negative.?
heat
Can you seporate gold from rock in heat?
Positive, if it is worthwhile
Why is heat sometimes positive or negative?
Because heat can either be hot which is positive, or cold which is negative. Hot and cold are relative terms which means it is a comparison to another temperature.
Can you generate heat with batteries?
yes put aluminum foil extending from the positive to negative an feel the heat!!
What does positive enthalpy mean?
Positive enthalpy means that energy is absorbed from the surroundings during a process. This usually indicates an endothermic reaction where heat is taken in. For example, when ice melts into water, it absorbs heat from its surroundings, resulting in a positive enthalpy change.
When heat flow into a system it's value is when heat flows out of a system it's value is negative?
positive < Mitzy >
When what flows into a system it's value is positive when heat flows out of the system it's value is negative?
heat. apex.
How do you safely conduct heat with negative and positive wires?
"Negative" and "positive" are not relevant for heat conduction. A metal wire will conduct both heat and electricity. Usually it won't conduct enough for practical purposes, because of its small cross-sectional area.
How is an endothermic reaction indicated in an equation?
An endothermic reaction is indicated in an equation by a positive heat term on the product side, showing that the reaction absorbs heat from the surroundings. This is typically represented by the ΔH value being positive in the reaction equation.
