Early computers took up an entire room and were accessible only to a few people. today, most computers are small enough to fit on a desk, and many people around the world use them. which breakthrough in computer science made it possible for people to connect with each other around the world?

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.