A block of aluminum at an initial temperature of is placed in an electrically heated…

PHYSICS · Multi-part · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

A 350 g350\,\text{g} block of aluminum at an initial temperature of 18 ∘C18\,^{\circ}\text{C} is placed in an electrically heated oven until the block reaches 140 ∘C140\,^{\circ}\text{C}. The specific heat of aluminum is 900 J (kg ∘C)−1900\,\text{J}\,(\text{kg}\,^{\circ}\text{C})^{-1}. (a) Calculate the amount of thermal energy that must be transferred to the block for it to reach the final temperature. (b) A laboratory heater delivers energy at a constant rate of 150 W150\,\text{W}. Determine whether operating the heater for 10 min10\,\text{min} supplies enough energy to accomplish the temperature change calculated in part (a). Support your answer with appropriate reasoning.

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