Tag Archives: energy conservation

Module One Post Fourteen [Pros and Cons of Nanotechnology]

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Pros and Cons of Nanotechnology

This is a helpful website because it provides information about nanotechnology and it provides both sides of the story (pros and cons). Some pros are that nanotechnology can make more efficient energy sources and they can be smaller so that is good to conserve space. Also, medicine is better with nanotechnology because they can reduce side effects. Some cons of nanotechnology are other trade markets will fall because nanotechnology will be more efficient. Weapons can now be more powerful with Nanotechnology. It is expensive to develop.

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Module One Post Three (Energy transformation on a roller coaster)

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      「roller coasters」的圖片搜尋結果

                                   Energy transformation on a roller coaster

This website shows the physics in of work and energy in roller coasters. It is helpful because it helps me understand how a roller coaster works. Roller coasters don’t have any engine in them, and they usually only depend on the first propeller in the track. There is usually a motor or a lifting chain at the the beginning of the track. When the roller coaster gains height, it gains potential energy, which is the amount of energy stored in an object due to position. For example, a heavy ball at the top of hill has potential energy because if it falls, their will be a lot of energy in the fall. When the roller coaster falls down the hill, it will lose potential energy and gain kinetic energy, which is the energy of motion. When the roller coaster goes up a hill, it will lose kinetic energy and gain potential energy. Mathematical equation can be used to calculate how much kinetic energy there are. This process is shown on the diagram below.