The specific heat capacity of iron is 450.5. A 15.5 kg block of iron with an initial temperature of 20 degrees Celsius is heated with 250 J. What will

the final temperature of the iron be?

Explanation:

Given that,

The specific heat capacity of iron is 450.5 J/g°C

The mass of block of iron, m = 15.5 kg

Initial temperature,

Heat required, Q = 250 J

We need to find the final temperature of the iron. The formula for heat required is given by :

So, the final temperature of the iron is .

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energy stored in the capacitor= 9.72 x 10⁻⁴ j

explanation:

the energy stored in the capacitor is given by

e= 1/2 c v²

e= energy stored

c= capacitance= 1.5 µc= 1.5 x 10⁻⁶f

v= potential difference=36 v

so energy stored= e= 1/2 (1.5 x 10⁻⁶) (36)²

energy stored= 9.72 x 10⁻⁴j