the startup company energy vault designed a system for storing energy 3. [4 by stacking concrete blocks. (Check out their simulation video at http://energyvault.com. Apparently, these kids never grew out of playing with blocks.) The system is touted as a utility-scale long-term storage facility that does not depend on local geography. (Unlike, for instance, pumped water storage, which requires nearby water and a hill.) a. If an Energy Vault block weighs 35 tons, and is raised 120 m into the air, how much energy in kWh is transferred to the block in the process? b. If the blocks are stacked in a uniform cylinder 120 m tall, and is designed to store 35 MWh of energy, how many 35-ton blocks are needed