warrior4516
19.06.2021 •
Physics
420 kJ heat is released when 2 kg of
water is cooled from 70 ° C. What is the
final temperature of water? (specific heat
capacity of water = 4.2 x 103 J kg-1 °c")
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Ответ:
Explanation:
KE = 1/2mv^2
6,250 J =1/2(250kg) v ^2
6250 J = 125kgv^2
125kg. 125kg
v =