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enot [183]
3 years ago
9

Cuantos elementos han descubierto los humanos

Physics
1 answer:
marishachu [46]3 years ago
4 0
ANSWER: How many elements the brothers have discovered
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3 years ago
The Olympic record for a marathon is 2.00 hour 9.00 minute 21.0 seconds if the average speed of the runner achieving this record
iren2701 [21]
(2.00 hours) x (3,600 seconds/hour)  =  7,200 seconds

(9.00 minutes) x (60 seconds/minute)  =  540 seconds

The record time = (7,200 + 540 + 21) = 7,761 seconds

Distance  =  (speed) x (time)

                 = (5.436 m/s) x (7,761 sec)  =<span>  42,188.8 meters
________________________________________________
</span>
The official length of the marathon run is  42,195 meters.
If we divide that by the record time in the question, we get

                       5.4368... m/s .

Rounded to the nearest thousandth, that's  5.437 m/s.

If the question had given the speed as  5.437  instead of  5.436 ,
then we would have calculated the distance to be 

            (5.437 m/s) x (7,761 sec)  =<span>  42,196.6 meters,

4.6 meters closer to the official distance than the answer we did get.
</span>
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3 years ago
What is potential energy​
JulsSmile [24]

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An Energy held by an object because of its position relative by other objects

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Hurricane are killing them
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What is the direction of the third force that would cause the box to remain stationary on the ramp ?
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An arrow pointing from the bottom of the ramp to the top, I assume it would be friction.

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