017 10.0 points You use energy to heat your home. What ultimately happens to the energy that you pay for in your heating bill? 1. The energy heats your home. 2. The energy escapes your home and heats the outside. 3. The energy disappears as it never exists. 4. The energy changes to mass. 018 10.0 points A 0.66 kg spike is hammered into a railroad tie. The initial speed of the spike is equal to 4.9 m/s. If the tie and spike together absorb 35.1 percent of the spike's initial kinetic energy as internal energy, calculate the increase in internal energy of the tie and spike. Answer in units of J