Question

Calculeaza caldura specifica a alamei stiind ca o piesa de alama cu masa 200g,incalzita de la 12grade C LA 16,4GRADE Cabsoarbe o caldura de 338,45J ?

Answer 1

m=200g=0,2kg
t1=12 grade celsius
t2=16,4 grade celsius
Q=338,45 J
c=?
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c=Q/m ori delta t
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c=338,45J /0,2 kg x 4,4 grade celsius
c=338,45 /0,88
c=384,6 J/kg ori grad celsius

Answer 2

c=Q/m•DT=338.45/0.2•4.4=338.45/0.88=384.6 J/kg•K