1]
c*m1*(t1-t)+c*m2*(t2-t)+c*m3*(t3-t)=0
=>0.6(80-t)+0.8(50-t)+1(20-t)=0
=>2.4t=48+40+20=108
=>t=45
混合后的温度为45摄氏度
2]
c(铁)m(t1-t)=c(煤油)m'(t-t2)
=>c(煤油)=c(铁)*0.2*(100-40)/[0.13*(40-20)]
=>c(煤油)=60*c(铁)/13
只要知道铁的比热容代入即可
1]
c*m1*(t1-t)+c*m2*(t2-t)+c*m3*(t3-t)=0
=>0.6(80-t)+0.8(50-t)+1(20-t)=0
=>2.4t=48+40+20=108
=>t=45
混合后的温度为45摄氏度
2]
c(铁)m(t1-t)=c(煤油)m'(t-t2)
=>c(煤油)=c(铁)*0.2*(100-40)/[0.13*(40-20)]
=>c(煤油)=60*c(铁)/13
只要知道铁的比热容代入即可