What is Energy used for?

From the Principle of Energy Conservation, we know that energy can't just disappear. Most of the energy used to propel a car at highway speeds goes into overcoming air resistance. Then what happens to this energy? Follow the energy as far as you can.

Suppose that each day one is exercising (or biking to work), and that because of perspiration (or occasional mud/rain) the clothes need cleaning each day.  Assume that because the clothes will get dirty anyway that it's not essential that they are perfectly...

should I start taking vitamins? i don't drink redbull or those energy shots. are they good for you? I want to feel normal not gittery.

My science teacher said that energy cannot be made or destroyed so what happens to energy once it has been used? eg heat energy and paper------light energy and heat. so what happens with the heat energy and light has it been destroyed?

In chemiosmotic phosphorylation, what is the most direct source of energy that is used to convert ADP + Pi to ATP? a. energy released as electrons flow through the electron transport system b.energy released from substrate-level phosphorylation c. energy...

Out of solar energy, wind energy, hydroelectric power, hydrogen fuel cells, tidal or wave energy, nuclear energy, and biomass which is the most common used?

what can solar panels etc be used for, and where can you put solar panels how popular is solar energy how effective/powerful is solar energy what, and how long for can solar energy ...show more

I need help with my school assignment. What energy is used in harvesting cotton and making cotton products, and what is the energy's source? I thought maybe petrol used in the ...show more