Учеба и наука
You do 199 J of... - вопрос №839766
You do 199 J of work while pulling your sister back on a swing, whose chain is 5.10 m long. You start with the swing hanging vertically and pull it until the chain makes an angle of 32.0° with the vertical with your sister is at rest. What is your sister's mass, assuming negligible friction?
Вы прикладываете работу в 199 Дж,
ноябрь 20, 2013 г.
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Всего ответов: 0