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a weightlifter lifts a 1000 newton barbell above his head from the floor to a height of 2.5 meters. he holds the barbell there for 5 seconds. how much work does he do during the 5 second interval?
asked
Feb 24, 2017
Physics
high-school
1
answer
2
votes
207k
views
Hi! I was wondering what three different levels of diversity were? Mainly within the animal area please.
asked
Mar 1, 2015
Biology
high-school
1
answer
1
vote
111k
views
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