Answer : The amount of heat needed is, 1188 J
Explanation :
Formula used :
[tex]q=m\times c\times (T_2-T_1)[/tex]
where,
q = heat needed = ?
m = mass of copper = 55 g
c = specific heat capacity of copper = [tex]0.40J/g^oC[/tex]
[tex]T_1[/tex] = initial temperature = [tex]20.0^oC[/tex]
[tex]T_2[/tex] = final temperature = [tex]74.0^oC[/tex]
Now put all the given values in the above formula, we get:
[tex]q=55g\times 0.40J/g^oC\times (74.0-20.0)^oC[/tex]
[tex]q=1188J[/tex]
Thus, the amount of heat needed is, 1188 J
