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hey people this answer is hard to answer. but i got it. they have and they have worked. watch myth busters they can help you!
Eryn ROCKS PEOPLE
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∙ 13y ago
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When are jetpacks invented?
no one really know when it invented
Are there jetpacks in real life?
Yes. There are real jetpacks, but they cannot produce more than a few seconds of lift.
Has a time machine been invented yet?
No, but scientists are working on it.The Lighter SideI will answer this question yesterday.
How do voice-activated laser pencils work?
they are not invented yet.
Why has a time machine not yet been invented?
A time machine has not been invented due to several reasons. First, we do not fully understand the processes that would allow such a machine to function. Secondly and according to Einstein in order to travel through time an object must reach the speed of light, which is likely impossible.
When are jetpacks invented?
no one really know when it invented
Who invented jetpacks?
The link has what you are looking for.
Have zero gravity skateboards been invented yet?
Not yet unless they have been invented by millionaires and not spread out to the rest of the world
What is the last computer invented?
it hasn't been invented yet.
Has an egg cracker been invented yet?
Yes, the egg cracker has been invented.
What invention hasn't been invented yet?
What hasn't been invented is a flying car!
Is the touch screen tv invented yet?
YES it has been invented
Who invented bionic eyes?
Bionic eyes have not been invented yet.
Who invented the see through shoe?
Umm it really as not been invented yet so... I can not really say yet
What has been thought of in the past but hasn't been invented yet?
There are so many things that people of the past have dreamed of but never invented any failed invention is a thought of the past that hasn't been invented yet.
What hasnt been invented yet?
something that hasn't been invented yet is a teleportation device Manned Interstellar Travel
What is the biggest aeroplane?
The aeroplane has not been invented yet.
