Предмет: Физика, автор: vipsmile666

2 задачи по физике. Нужно нормально расписать и каждой задаче график или рисунок, в зависимости от условия

Приложения:

Ответы

Автор ответа: IUV
0
m1v =(m1+m2)*u
m1a1=-F
a1=-F/m1
t=(u-v)/a1=-m1*(m1*v/(m1+m2)-v)/F=m1*m2*v/((m1+m2)*F)
m2a2=F
a2=F/m2
S=(v*t+a1*t^2/2) - (0*t+a2*t^2/2)=v*t+(a1-a2)*t^2/2
S=v^2/(2*F(1/m1+1/m2))
m1=1/(v^2/(2*F*S)-1/m2)=1/(500^2/(2*18000*0,15)-1/5) кг = 0,021693717 кг ~ 0,0217 кг ~ 0,022 кг = 22 г

p1V1/T1=p2V2/T2=p3V3/T3
V3=V1*p1/p2*T3/T1=3*10^6/(1,9*10^6)*570/450 л = 2 л
V2=V3= 2л
p2=p1=1 Мпа
T2=T1 * (p2/p1) * (V2/V1) = 450 * (10^6/10^6) * (2/3) К =300 К

















Автор ответа: diananebesnaq
0
http://znanija.com/task/8707069
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