48 because the formula for work is w=f•d so when you plug f and d in its 12 times 4, giving you 48.
You have also the total power generated is 200W
To figure out the kind of exercises, you need to master the definition of each unit. for example
power: watt (W) is
joule/secWork: is Newton. meter =
Joule
To obtain the work done by the adult, we have to convert the power (watt) into a work by multiplying by the time (

* seconds = Joule)
10 minutes is 60 * 10 =
600 seconds200Watt * 600 second = 120000 joules =
120 Kj
So the work is 120Kj
I believe its when you <span>silencing one of the two X chromosomes in female cells...
Hope I helped
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