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exampllee1
@exampllee1
July 2022
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fatt52
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3) m1=0.2 кг t1=16 t2=80 tc=45 m2=?
===
c*m1*(tc-t1)=c*m2*(t2-tc)
m2=m1*(tc-t1)/(t2-t1)=0.2*(45-16)/(80-45)≈0.166 кг
=====================
4) E=10^-21 Дж M=32*10^-3 кг/моль p=10^5 Па
===
p=(2/3)*n*E
n=3*p/(2*E)=3*10^5/(2*10^-21)=1.5*10^26
E=mo*v²/2
mo=M/Na Na - число Авогадро
v=√(2*E*Na/M)=√(2*10^-21*6*10^23/(32*10^-3))≈194 м/с
========================================
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Answers & Comments
Verified answer
3) m1=0.2 кг t1=16 t2=80 tc=45 m2=?===
c*m1*(tc-t1)=c*m2*(t2-tc)
m2=m1*(tc-t1)/(t2-t1)=0.2*(45-16)/(80-45)≈0.166 кг
=====================
4) E=10^-21 Дж M=32*10^-3 кг/моль p=10^5 Па
===
p=(2/3)*n*E
n=3*p/(2*E)=3*10^5/(2*10^-21)=1.5*10^26
E=mo*v²/2
mo=M/Na Na - число Авогадро
v=√(2*E*Na/M)=√(2*10^-21*6*10^23/(32*10^-3))≈194 м/с
========================================