A 350g block of aluminum at an initial temperature of 18∘C is placed in an electrically heated oven until the block reaches 140∘C. The specific heat of aluminum is 900J(kg∘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 150W. Determine whether operating the heater for 10min supplies enough energy to accomplish the temperature change calculated in part (a). Support your answer with appropriate reasoning.