Una barra de aluminio de 5,7 Kg se calienta a presión atmosférica (1 atm) de modo que su temperatura aumenta de 10 ºC a 75 ºC. Cuál es el trabajo consumido en la barra por la presión? α= 1.7 x 10-5 (ºC-1). DAl= 2.7 Kg/m3.

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

Place me with this question is my last question

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )