coal is made black so that it emits light
A object appears black when it reflects or emits no visible light. True black is very uncommon because almost no substance can completely absorb light. http://en.wikipedia.org/wiki/Black
when you heat an object up what happene to the atomsmolecules that it is made of?
The specific heat capacity of the material the object is made of. The mass of the object. The temperature change experienced by the object.
Sadi Carnot discovered that the transformation of heat into mechanical energy could only occur when thermal energy flows from a hot object to a cool object. he also discovered that in this process some heat was always lost.
a frying pan it is made of metal a great conduter of heat
Well, if the body emits its own light then it first has to make it. So when the light is made not all of the energy put in will become light therefore the energy created will become light, heat and sound (like a light bulb) and so the amount of energy that is wasted on heat and sound will affect the amount of light produced in the long run. Hope this helps
The temperature of an object depends on its internal energy, the mass of the object, and the specific heat capacity of the material it is made of.
The three factors that affect how much heat an object absorbs or loses are the temperature difference between the object and its surroundings, the surface area of the object, and the type of material the object is made of.
Black is a color that results from the complete absence of light or the absorption of all light wavelengths. When an object absorbs all colors of light and reflects none, the object appears black to our eyes.
A large energy-producing object in space made up of gases is a star, such as our Sun. Stars are primarily composed of hydrogen and helium and generate energy through nuclear fusion, where hydrogen atoms combine to form helium, releasing vast amounts of energy in the process. This energy powers the star and emits light and heat, influencing the surrounding space and any nearby celestial bodies.
All objects conduct heat to some degree, even though some conduct it better than others. Objects are made out of matter, and that is the only requirement. If you want to know what an object would need to be made out of in order to conduct heat efficiently, that would be another question. Generally speaking, solids and liquids conduct heat better than gases so. Solids that contain trapped gas within them do not conduct heat as well as solids that don't.
a black shirt and a solar panel a black car