It's not a real rule actually, more of just an excuse to keep food. Once food has touched the floor it has almost instantly picked all the germs it's going to, whether you wait 2, 5 or 10 seconds to pick it up.
The frequency of a wave is measured in hertz (Hz). So, the number of waves created every second is equal to the frequency in hertz. E.g. If a wave has a frequency of 5 Hz, then 5 waves are created every second.
The rule for calculating the velocity of a falling object is V = gt, where V is the velocity, g is the acceleration due to gravity (32 ft/s^2), and t is the time in seconds. Plugging in the values: V = (32 ft/s^2) x 5 seconds = 160 ft/s. Therefore, the piano dropped 5 seconds ago is falling at a rate of 160 feet per second.
The five-second rule is a common belief that if you drop food on the floor and pick it up within five seconds, it is still safe to eat. It is not clear who exactly invented it, but the idea likely originated as a popular myth rather than a scientifically proven concept.
The frequency of 5 waves passing by every second is 5 hertz (Hz). This means that 5 complete waves pass a given point in one second.
A soft drink can is not a good object to use when applying the two-second rule while driving. It is best to focus on the vehicle directly ahead of you and ensure that there is a two-second gap between your vehicle and theirs to maintain a safe following distance.
the 5 second rule is not true there are still germs on it
The 5-Second Rule - 2011 was released on: USA: 30 October 2011 (Buffalo Screams Film Festival)
The 5-second rule is bogus. As soon as food hits the floor, it is contaminated.
4 seconds
no the myth busters testedit
Food Detectives - 2008 The 5-Second Rule 1-1 was released on: USA: 2008
Eye for an Eye - 2003 5 Second Rule Public Apology was released on: USA: 6 December 2006
In 2001, a chap named Edward Costelloe invented it. Somebody had dropped a complete BK hamburger on the floor, and after 2 seconds, the own said i don't want it, and after 5 second Edward said, 'i'll have it...5 second rule'. that pretty much it
No, it has been proven to be rather in-effective.
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There is no 90 second rule in basketball.
One second.