Results for: Hot-air

In Physics

How does a hot air balloon work?

Hot air balloons get their buoyancy from hot air created by apropane burner at the base of the balloon. Hot air is less densethan cold air and so weighs less. When the cold ai (MORE)
In Science

How do hot air balloons stay in the air?

It is really quite simple and is based on the principle that hot air rises, you will have experienced the warmer air at the kitchen ceiling when cooking if you have to change (MORE)
In Science

Why are hot air balloons important?

They are important, because it is one of the very first things, before airplanes that can allow you to fly in the sky! It also was the oldest successful human-carrying flight (MORE)
In Physics

Why does hot air or liquid rise?

Because when the air or water are heated their density becomes lighter than that of the cold air or water and so they rise up and the cold air or water goes down.
Thanks for the feedback!

Why does a hot air baloon rise?

They rise because the hot air from the fire in the balloon art  weighs less then the cool air around the balloon. so it floats up  and rises. It uses convection energy. Hot (MORE)

Why is your air blowing hot air?

It may seem obvious, but it can happen. As you were setting the  thermostat, you could have flicked the selector switch over to  "heat" instead of "cool." If this happened, (MORE)
In Science

What does density have to do with hot air balloons?

The burners on a hot air balloon create hot air, which rises into the balloon and displaces the cooler air from the balloon. Then the hot air, being less dense, will lift the (MORE)

What is the answer to 20c plus 5 equals 5c plus 65?

20c + 5 = 5c + 65 Divide through by 5: 4c + 1 = c + 13 Subtract c from both sides: 3c + 1 = 13 Subtract 1 from both sides: 3c = 12 Divide both sides by 3: c = 4
Thanks for the feedback!