A 3.87kg lead billet is to be melted for a casting operation. Lead has a melting point of 328°C, a specific heatcapacity of 128 J/(kg·K), and a latent heat of fusion of23,200 J/kg. (a)Calculate the amount of heat required to heat the lead from a starting temperature of 22.4°C to its melting point of 328°C. (b)Calculate the amount of heat needed tomelt the lead brick once it reaches 328°C.

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