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Yes, hot air balloons flew first. Though I don't know the exact details, as the history is so diverse, spread over many years, and even includes the candle lit paper hot air balloons released at parties or festivals. It would take some research on the internet to get the full details.
What else can I help you with?
How balloons and blimps are able to fly in oceans of air?
Balloons float because of the same principal as how ships float: bouyancy. A ship displaces a volume of water. If the ship's weight is less than the volume of water that it displaces, then it will float. Same is true for a balloon. It displaces a volume of air. If the Hydrogen or Helium in the balloon weighs less than the volume of air it displaces, then it will rise.
Is it true stars like the sun burn hydrogen producing helium?
All stars fuse hydrogen into helium - the slight difference in atomic weight between 4 hydrogen atoms and one helium atom, is given off as radiation.
The Canadian flag can never be flown at night True or False?
False. There is no restriction on flying the Canadian national flag at night without illumination. Consider the fact that a large portion of Canada has continuous night for a considerable part of the year. In those isolated climes where it may not be practical to provide artificial illumination, what would we have them do? Of course if it is practical to do, it is not wrong to illuminate it, but the Canadian Heritage Department simply states that "The flag may be flown by night as well as by day."
Why is a high altitude hot air balloon only partially filled?
As it rises, outside air pressure decreases, and the hot air inside expands and fills the balloon. Same thing is true of large helium balloons.
True or false a main sequence star generates energy by fusing helium into hydrogen?
Oops ! No. The statement is going along pretty good until the end.The star actually fuses hydrogen into helium .
Is Twenty-One Balloons based on a true story?
no
What were the Wright Brothers the first to do?
They made the first powered, controlled flight in a heavier than air vehicle. In Kitty Hawk North Carolina, Wilbur and Orville Wright kept their plane in the air for 12 seconds but they were still recorded as the first people to fly in a powered craft. Many other people had flown before using hot air balloons or gliders but these were not considered true aeroplanes.
Which of the following statements is NOT true about hydrogen sulfide?
hydrogen sulfide is not hazardous
How balloons and blimps are able to fly in oceans of air?
Balloons float because of the same principal as how ships float: bouyancy. A ship displaces a volume of water. If the ship's weight is less than the volume of water that it displaces, then it will float. Same is true for a balloon. It displaces a volume of air. If the Hydrogen or Helium in the balloon weighs less than the volume of air it displaces, then it will rise.
Explain the significance of hot air balloons to meteorologists?
Not much. While it's true that meteorologists do use balloons to send up weather probes, they tend to use gas balloons instead. It's simpler, cheaper and works better in their conditions.
Is this true or false Hydrogen-1 and hydrogen-2 differ in that hydrogen-2 has one neutron hydrogen-1 has none?
Yes it is true. All isotopes differ in the number of neutrons only.
Water H2O is composed of hydrogen and oxygen true or false?
True
Jupiter is mostly made up of hydrogen and helium true or false?
True. Jupiter is consisted of mainly hydrogen and helium. 90% hydrogen, 8% helium and 2% other gases
What is true is true regarding hydrogen fuel cells and hydrogen fuel cells and hydrogen fusion?
More mass is converted to energy in a fusion reaction than in a chemical reaction, such as that found in a fuel cell. - APEX
Does sucrose contain carbon hydrogen?
Yes, it is true.
Hydrogen bonding is weak attractive force?
true
Is uranium heaver than hydrogen?
Yes, it is true.
