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long enough...
The answer to your question depends on the temperature of the water relative to the temperature around the cup. I wouldn't bank on more than 2-3 minutes.
Urban myth. No.
Styrofoam because it has a thick layer and is a good insulator.Paper and plastic are could alternatives but Styrofoam would work better, therefore glass would be the worst one to use because it would only keep it warm for a couple of minutes.
styraphoam
long enough...
Yes it will .
No, a galss cup does not keep any drink warm long.
It is recommended to replace plastic water bottles regularly to avoid the risk of chemicals from the plastic leaching into the water. Reusing the same plastic water bottle for an extended period can increase this risk, especially if exposed to heat or sunlight. It's best to switch to a new bottle periodically to ensure safety.
The answer to your question depends on the temperature of the water relative to the temperature around the cup. I wouldn't bank on more than 2-3 minutes.
for about 3 hrs
they keep warm because they put water proof warmers in their swimming caps which warms their whole body
depends on what kind of bottle. if its a regualr plastic bottle keeping it under your armpit will keep it at around 96 98 degrees.
because they are good conductor of heat which allows theheat to pass through the bottle and make the water warm
they keep warm by sleeping in long grass.
Urban myth. No.
Take it out of the ice chest. A plastic insulated cooler can be used to keep things warm. Warm the cooler by running hot water into it. Empty the water after a couple of minutes. Wrap the item you want to keep warm in newspapers or towels and place it into the cooler. You can also use something that can be warmed, such as the combination ice/hot packs, to pack with the item in the cooler and it will help it stay warm longer.