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Hipervinculo Física
Hans Christian Oersted was a Danish scientist who explored the relationship between electric current and magnetism. Current is the flow of electrons, and is how we hardness electricity. Currents creat ...
Hipervinculo Física
There are 8 planets (and one dwarf planet) in orbit around the sun, hurtling around at tens of thousands or even hundreds of thousands of miles an hour. Because the planets are attracted to the sun an ...
Hipervinculo Biología
Have you ever wondered why some foods give you more energy than others?"Bomb calorimeter" sounds a bit confusing – it canalso be called a "combustion calorimeter." The sample is placed in a small meta ...
Soils are extremely important parts of every ecosystem. They are a home to many microbes and provide vital nutrients to the plants that live in them. pH is the measure of acidity or alkalinity of a so ...
Hipervinculo Física
A lens is a clear object, usually made of glass or plastic, which is used to refract, or bend light. Lenses can concentrate light rays (bring them together) or spread them out. Common examples of lens ...
Hipervinculo Física
Energy comes in many forms. Electric energy can be converted into useful work, or mechanical energy, by machines called electric motors. Electric motors work due to electromagnetic interactions: the i ...
The water cycle describes the flow of water on Earth. The biggest stock of water on Earth is in the oceans. While there are many small processes in the water cycle that help water get from one place t ...
Hipervinculo Física
It used to be that if you had a string of holiday lights and one bulb went out, the whole string no longer worked. This was because the lights were set up in a series circuit. Recently, companies have ...
Hipervinculo Física
Have you ever wondered why oil heats up so quickly in a pan, but water takes so long to boil?Heat, which is the exchange of energy between a system and its surroundings, occurs in three major ways: co ...
Energy is neither created nor destroyed: it is only transformed. There are many different forms of energy, including kinetic energy (the energy of motion), potential energy (energy that is considered ...
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