4.9
There is something in physics that does not have a special name like a Newton or a Joule. It is momentum and can be expressed as mass multiplied by velocity (kg*m/s). Like energy and matter, …
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Path Independence and Thermodyanamics
Earlier in the year we said that the work necessary for hiking up the slope of Rampina Mountain vs. climbing straight up the cliff route would be the same, independent of the path taken. This …
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Heat Flow
Heat naturally flows from warmer to cooler. Things tend towards equilibrium. Therefore heat vents are most efficiently placed on the floors of rooms so the heat might rise up throughout the …
Latent Heat of Fusion | Latent Heat of Evaporation
If you add heat to some substance it will not necessarily change temperature. Energy also can work towards producing a phase change, such as from solid to liquid or liquid to gas. Water might heat …
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What is Heat? And Heat Transfer
The term heat refers to the flow of energy. If you drank a cool drink, it would only cool you down the difference in temperature for that amount you drink. The liquid is brought into your system and …
How a Thermostat Works, Thermal Expansion Coefficients
A good thermostat will accurately measure the environment while simultaneously not greatly changing its surroundings. The basic construct that that makes a non-digital thermostat work is that a …
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