When there are few clouds and the wind is light. Usually, these conditions are found at sunrise or at sunset.
i think it takes a long time for a hot air balloon to fly
Yes, helium will help a balloon fly. Helium does not affect the direction that a balloon goes, but it will keep it in the air for quite some time.
The hot air inside the balloon expands, making the hot air balloon fly.
This link has tons of information on ballooning. Enjoy.
The hot air inside the balloon expands, making the hot air balloon fly.
if we keep a pumpkin inside a balloon the balloon will not fly and will burst
The force of buoyancy, which is created by the displacement of air by the balloon, allows it to fly. This force is greater than the weight of the balloon, causing it to rise.
Yes they were first to fly the first hot air balloon
A sheep, chicken, and a duck all at the same time
Possible.
air is heavier than balloon, air rises
the mechanical advantage of a hot air balloon is this that we can use it in many good ways like it is for individual flight for every one, and can be use at any time but it depends on the air resistance + gravity because if the gravity is low the hot air balloon would fly far and far in the air and if the gravity is hifgh it would unable to fly and in air resistance if the air is high it would be difficult for a hot air balloon to fly and if air resistance is low it would be difficult for hot air balloon to fly in the air