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Nimfa-mama [501]
3 years ago
12

How much energy is required to heat an iron nail with a mass of 25.5 grams from 65°C until it becomes red hot at 720°C?

Physics
1 answer:
KengaRu [80]3 years ago
3 0

Answer:

7506.1035J

Explanation:

We can use the relation

Q =mcΔθ

to find the energy required to heat the iron nail, where Q is the heat energy required, m is the mass of the nail and Δθ is change in temperature and c is heat capacity of the iron nail.

Also, from the question,

m= 25.5g

c = 0.4494J/g°C

Δθ=720 - 65 = 655°C

By substitution

Q =25.5 \times 0.4494 \times 655

Q=7506.1035J

Hence the energy required to heat the iron nail is 7506.1035J

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