Напишитесочинение на на тему my opinion to drugs по плану : вступление осн. your attitude

ответ:

6) соединение параллельное

=> u1=u2=u

t=1 мин = 60 с

ответ: a=50 дж

7) q=m(угля)q

    - каменный уголь (дж/кг)

q= 3,4*10^7 - древесный уголь (дж/кг)

нагревание льда

q1=cm(льда)t

с=2100 дж/(кг*°с)

t=0-(-10)=10°c

расплавка лёд

q2=(лямда)m(льда)

лямда=3,3*10^5 дж/кг

нагреть до т.кипения:

q3=c(воды)*m(льда)*100

c=4200 дж/(кг*°c)

парообразование:

q4=m(льда)*l

l=2,3*10^6 дж/кг

q=q1+q2+q3+q4

m(угля)=

=> m(угля)=

m(угля)=0,23 кг - при каменном угле

если уголь древесный:

m(угля)=0,18 кг

объяснение:

My attitude to drugs is very negative. drugs, it is very,very bad thing! it in no case can not be used! people who accept them(almost all) are doomed to death. approximately 45% of their use, but to live there remain only 15%. for the use of the "hemp" put in jail.  

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