fgcherubin
17.04.2020 •
Chemistry
A child pulls a sled up a snow-covered hill. The child does 405 J of work on the sled. If the child walks 15 m up the hill, how large of a force must the child exert?
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Ответ:
I think the answer is 27N.
Explanation:
Ответ:
x=2 y=1.
Explanation:
Equation 1: −8x+4y=−12. Equation 2: −x−y=−3. Because its easier to work with positive values, I'm going to multiple ...