Tagged Questions
0
votes
1answer
113 views
Supermarket refrigerator - why is it noticebable colder in this shop area?
As we know fridge can't cool room in which it is (according to Second Law of Thermodynamics, heat emitted by fridge is greater than heat absorped).
However, when we go next to the fridge in ...
2
votes
3answers
616 views
Why is a hot air balloon “stiff”?
1) Why is a hot air balloon stiff?
2) Is the pressure inside the balloon higher than the pressure outside (atmospheric pressure)?
3) If the pressure inside is higher than the outside, how is it ...
