The tutor continues to investigate energy alternatives. The comparison between electric and gasoline cars might depend on your point of view. Someone told me a while ago that electric cars are 50% efficient. I was surprised to hear that number, …
Energy efficiency: electric cars vs gasoline-powered cars Read more »
The tutor continues to explore auto batteries (aka car batteries). While this topic is rare during tutoring, it’s probably relevant to virtually everyone at some point…. I recall, decades ago, a friend of mine bought a new battery for …
Auto batteries, part two: cold cranking amps and internal resistance Read more »
Tutoring high school chemistry includes electrochemistry. The tutor shares some reflections about auto batteries as winter approaches. I recall more than one mechanic talking about how a device might work fine for a long time but have a hidden …
Continuing about autos, the tutor turns the ignition on another topic: ethanol as a fuel in North America. Sometime in the 2000s, if not before, ethanol’s use as an alternative auto fuel became a hot topic. Its use in Brazil …
Progressing through summer, the tutor recalls these issues he’s always loved discussing. During tutoring, he rarely gets to…. One source of fascination, for some drivers (and MOST people in the transport business), is how fuel consumption increases with speed. …
Tutoring math, you might be asked just about anything to do with numbers. Here’s a comparison the tutor thinks might interest even the most casual visitor…. My automobile has just matured past its warranty. Though there’s seemingly nothing wrong with …