Table 1: Shaken Sand System Temperature Data Initial Temperature (C) 21 Final Temperature (C) 242. What was the change in internal energy of the system? Show your work. Hint: The specific heat for dry sand is about 0.80 J/g.K and the density for sand is 2.3 g/mL. 3. Explain where the heat energy is coming from, if there is no work being done on the system because the volume is constant