0
85%
Keely Brakus
Wiki User
∙ 14y agothe usable available heat is 85%.
Jose
Add your answer:
Earn +20 pts
What is the mist you see from ice?
Water vapor. Heat flows from where it is hot to where it is not - that's basic thermodynamics. Thus, when you place ice in ambient air, the heat from the ambient air is going to transfer to that ice, and this sudden input of heat will cause the outer layer to undergo a rapid change of state.
Will a higher ambient temperature help a heat sink work better?
It depends on what you're doing, but typically no. If you're trying to cool something, such as a processor in a computer, or the engine on a car, the lower the ambient temperature, the better the heat sink works. If you're trying to heat something (I don't know of an example off-hand, but you could potentially dip the heat sink in a hot liquid and use it to keep something warm without getting it wet, as a made-up example), you want the ambient temperature to be as high as possible. Obviously, there are limitations, so you don't want to freeze stuff too cold, or heat stuff too hot, but in general, a lower ambient temperature helps keep stuff cold, and a higher ambient temperature helps keep stuff hot.
Factors does not influence the rate of microbial death via heat or antimicrobial chemical treatment?
Ambient Light
Other than a catalyst how can a reaction be sped up?
Many chemical reactions can be sped up by raising the ambient temperature.
What happens to usable energy?
In any transfer of energy or conversion of energy from one form to another, the total amount of energy does not change. The total amount of usable energy, however, always decreases.
Is heat a unusable energy?
Heat, by itself, is unusable. It is the heat difference that makes it usable.
The least unstable form of energy is?
Ambient heat
Why are ambient heating beater than latent heat?
It uses sun heat and not chemials
What is used to heat a room?
Depends of the ambient temperature of the room.
When do things stop losing heat?
When they reach ambient temperature.
What affects the rate at which wet clothing dries?
Heat and ambient humidity.
How water changes from ice into a gas?
By adding heat and/or reducing ambient pressure.
How does coal transform into usable energy?
You burn it for heat, which is then used to drive some type of heat engine to do work.
What is the mist you see from ice?
Water vapor. Heat flows from where it is hot to where it is not - that's basic thermodynamics. Thus, when you place ice in ambient air, the heat from the ambient air is going to transfer to that ice, and this sudden input of heat will cause the outer layer to undergo a rapid change of state.
Is lead hot?
Unless external heat is added lead remains at ambient temperature.
What is the efficiency of an engine when the heat input is 200000 joules and the waste heat is 150000joules?
Out of the 200KJ input, 150KJ isn't usable. The only usable output of themachine is the remaining 50KJ.The efficiency of that machine is 50KJ/200KJ = 25% .It must be pointed out, though, that it all depends on your definition of what isusable and non-usable output. For example, if this machine were labeled as an"Office Space Heater", then the 150KJ of heat would be the usable output, andthe efficiency would have been 75% .
Why is energy considered lost?
Because it is. Once you use energy up, it still exists in some form (due to energy conservation), but it's no longer usable. For more information, read about the Second Law of Thermodynamics (for example, in the Wikipedia).
