Physics, 13.02.2020 21:46 shyyyy13

You stand on the seat of a chair and then hop off.
A) During the time you are in flight down to the floor, the Earth moves toward you with what acceleration?
B) The Earth moves toward you through what distance?

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Answer from: shonesam98

Explanation:

A ) When a person is falling under gravity , he goes close to the earth with acceleration 9.8 m /s² . Here we assume that earth is stationary , though it is not . We can also say that earth is moving towards the person with acceleration 9.8 m /s² . The displacement or movement is a relative measurement . So is acceleration .

So the answer to first question is 9.8 m /s²

B ) Displacement of person in this case towards the earth is equal to height of the chair . Here we assume that earth is stationary , though earth is not stationary . It is constantly moving around the sun. Similarly we can also say that earth has moved towards the person by distance equal to height of the chair , if we consider person to be stationary.

Answer from: Quest

nec chapter 5 contains

c. information on special occupancy areas

nec chapter 6 covers

a. special equipment

which of the following rules contain the words shall or shall not and must be adhered to?

b. mandatory rules

which of the following rules identify actions that are allowed but not required and typically cover options or alternative methods?

c. optional rules

which of the following serves as the introduction to the nec and provides an overview of the book?

a. nec article 90

organizations that test products for safety are

c. nrtls

the nec is published by the

a national fire protection association

the nec is divided into

b. 9 chapters

the nec provides informative annexes for

c. informational materials and examples

two terms from nec article 100 that trainees should become familiar with are

b. labeled and listed

explanation:

Answer from: Quest

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by mathematical calculations before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of uranus led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.

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You stand on the seat of a chair and then hop off.
A) During the time you are in flight down...

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