The foam contains air, which is a poor conductor of heat.
Styrofoam cup is a good insulator because it is coated with foam
It is a good insulator of heat :)
Insulator
I assume you mean the water in the cup. Foam is a better insulator than glass, so it should be the water in the glass cup.
A paper cup is not the best insulator. A better insulated cup is the foam cup. However, it is better insulated than other materials such as a metal canteen, due the the heat capacities of the materials. Putting two paper cups to together acts as a decent insulator due to the air between the two cups. This is due the to air being a poor conductor of heat.
Styrofoam, along with most other expanded plastics, is a very poor insulator of heat and electricity, thereby making a foam coffee cup a very good insulator.
Styrofoam cup is a good insulator because it is coated with foam
It is a good insulator of heat :)
Insulator
Yes A2: Yes, If it's a Foam cup. Not if it's simply a solid plastic cup.
When you bring a charged rod close to a foam coffee cup, you induce.... Charge Polarization
I assume you mean the water in the cup. Foam is a better insulator than glass, so it should be the water in the glass cup.
A paper cup is not the best insulator. A better insulated cup is the foam cup. However, it is better insulated than other materials such as a metal canteen, due the the heat capacities of the materials. Putting two paper cups to together acts as a decent insulator due to the air between the two cups. This is due the to air being a poor conductor of heat.
Polystyrene is a substance that when in a solid state has a lot of holes. These holes trap air inside them and since air is a good insulator, the polystyrene cup is a good insulator. *Air is only a good insulator when not moving, hence why a breeze feels cold.
I suspect it has something to do with static electricity.
Because it has good insulation.
Individuals can find one cup coffee brewers. A good website is www.keurig.com/. Keurig coffee brewers are very popular and their coffee tastes really good.