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Homework Help: physics

Posted by michelle quendarsv on Saturday, November 20, 2010 at 6:50pm.

Posted by michelle quendarsv on Saturday, November 20, 2010 at 5:26pm.


Posted by michelle quendarsv on Saturday, November 20, 2010 at 3:55pm.


if it takes 726 watts of power to move a mass 36 meters in 14 seeconds, what is the mass?

i really need like, step by step help please? asap.
thanks, michelle .
physics - bobpursley, Saturday, November 20, 2010 at 4:06pm
power= work/time= mass*g*distance/time

mass= power*time/distance*g


physics - michelle quendarsv, Saturday, November 20, 2010 at 4:24pm
so... would it be like,
726 x 14 / 36 ?
physics - bobpursley, Saturday, November 20, 2010 at 6:08pm
no, what happened to g (9.8m/s^2) in the denominator?

physics - michelle quendarsv, Saturday, November 20, 2010 at 6:40pm
but where did you get 9.8m/s2?

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