LucyDuke
staring at the clock
This is gonna come out like a babble 'cause I'm not really sure what I'm talking about.
Cars' fuel efficiency is measured in miles per gallon. But how much energy are they using? Is that what horsepower has to do with? How much energy is there in a gallon of gasoline? How much of that energy does a car use? What are the different efficiencies of different fuels, like can you get 40% of gasoline's energy but only 25% of ethanol's, maybe? I imagine that that depends on different engines too?
What are the different units of energy? I'm aware of the existence of calorie and joule but how much are those?
What about human fuel? Is the calorie count of a given food a measure of all the potential calories in it, or the measure of how many a human can get out of it? Because there are things we can't digest, right, that a cow would be able to get energy from. So do we have different efficiencies for different foods? Are there things other than protein and carbohydrates and fats that we can get energy from? (I think we get calories out of alcohol, don't we? Anything else?)
How many cheeseburgers would my Saab have to eat to drive two miles?
I realize this is an incoherent babble but even just a couple of partial answers would probably cover a lot of babble. I have a lot more babbling to do but I bet a few explanations will save me a lot of babble. Thanks!
Cars' fuel efficiency is measured in miles per gallon. But how much energy are they using? Is that what horsepower has to do with? How much energy is there in a gallon of gasoline? How much of that energy does a car use? What are the different efficiencies of different fuels, like can you get 40% of gasoline's energy but only 25% of ethanol's, maybe? I imagine that that depends on different engines too?
What are the different units of energy? I'm aware of the existence of calorie and joule but how much are those?
What about human fuel? Is the calorie count of a given food a measure of all the potential calories in it, or the measure of how many a human can get out of it? Because there are things we can't digest, right, that a cow would be able to get energy from. So do we have different efficiencies for different foods? Are there things other than protein and carbohydrates and fats that we can get energy from? (I think we get calories out of alcohol, don't we? Anything else?)
How many cheeseburgers would my Saab have to eat to drive two miles?
I realize this is an incoherent babble but even just a couple of partial answers would probably cover a lot of babble. I have a lot more babbling to do but I bet a few explanations will save me a lot of babble. Thanks!