potential energy

简明释义

势能；位能

英英释义

例句

1.When you lift a book off the table, you increase its potential energy (势能) due to its height.

当你把一本书从桌子上抬起时，你增加了它的potential energy（势能），因为它的高度。

2.As the archer pulls back the bowstring, the arrow gains potential energy (势能).

当弓箭手拉回弓弦时，箭获得了potential energy（势能）。

3.The potential energy (势能) of water stored in a dam can be converted into electricity.

储存在水坝中的水的potential energy（势能）可以转化为电力。

4.A roller coaster at the top of a hill has maximum potential energy (势能) before it descends.

过山车在山顶时具有最大的potential energy（势能），然后它开始下降。

5.A compressed spring holds potential energy (势能) that can be released when it expands.

一个压缩的弹簧储存着potential energy（势能），当它扩展时可以释放出来。

作文

In the realm of physics, the concept of potential energy is fundamental to understanding how energy is stored and transformed. Potential energy refers to the energy that an object possesses due to its position or configuration. For instance, a rock perched at the edge of a cliff has a significant amount of potential energy because of its elevated position relative to the ground. If the rock were to fall, this stored energy would be converted into kinetic energy, which is the energy of motion. This transformation illustrates one of the key principles of energy conservation: energy cannot be created or destroyed; it can only change forms.Another common example of potential energy is found in a compressed spring. When a spring is compressed, it stores energy that can be released when the force is removed. The amount of potential energy stored in the spring depends on how much it is compressed. The more you compress it, the more energy it holds. This principle is utilized in many mechanical devices, from toys to complex machinery, where springs are used to store energy that can be released to perform work.Additionally, gravitational potential energy is a specific type of potential energy that depends on an object's height above the ground. The formula for calculating gravitational potential energy is given by PE = mgh, where PE represents potential energy, m is the mass of the object, g is the acceleration due to gravity, and h is the height above the reference point. This equation shows that the higher an object is, the more potential energy it possesses. For example, a roller coaster at the top of a hill has maximum potential energy, which is converted into kinetic energy as it descends.Understanding potential energy is not only essential in physics but also in various fields such as engineering, architecture, and environmental science. Engineers must consider potential energy when designing structures, ensuring they can withstand forces that may act upon them, such as wind or earthquakes. In environmental science, understanding the potential energy in ecosystems can help in conserving energy resources and promoting sustainability. For instance, the energy stored in biomass can be harnessed through various methods to produce renewable energy.In conclusion, potential energy is a crucial concept that plays a vital role in our understanding of energy dynamics. It helps explain how energy is stored and transferred in different systems, from simple mechanical devices to complex natural processes. By grasping the principles of potential energy, we can better appreciate the intricate balance of forces and energies that govern our physical world. As we continue to explore and innovate, the applications of potential energy will undoubtedly expand, leading to new technologies and solutions for the challenges we face today.

在物理学领域，势能的概念对于理解能量的储存和转化至关重要。势能指的是一个物体由于其位置或构型所拥有的能量。例如，一块悬在悬崖边缘的岩石具有相当大的势能，因为它相对于地面的高度。如果岩石掉落，这种储存的能量将转化为动能，即运动的能量。这一转化说明了能量守恒的一个关键原则：能量不能被创造或摧毁；它只能改变形式。另一个常见的势能例子是在压缩弹簧中。当弹簧被压缩时，它储存的能量可以在去除力后释放。弹簧中储存的势能量取决于它被压缩的程度。压缩得越多，它储存的能量就越多。这一原理被广泛应用于许多机械装置，从玩具到复杂的机械设备，其中弹簧用于储存可以释放以执行工作的能量。此外，重力势能是一种特定类型的势能，它依赖于物体离地面的高度。计算重力势能的公式为PE = mgh，其中PE代表势能，m是物体的质量，g是重力加速度，h是相对于参考点的高度。这个方程表明，一个物体越高，它所拥有的势能就越多。例如，过山车在山顶时具有最大的势能，在下降时转化为动能。理解势能不仅在物理学中至关重要，在工程、建筑和环境科学等多个领域也同样重要。工程师在设计结构时必须考虑势能，确保它们能够承受可能作用于它们的力量，如风或地震。在环境科学中，理解生态系统中的势能可以帮助保护能源资源并促进可持续发展。例如，生物质中储存的能量可以通过各种方法被利用，以生产可再生能源。总之，势能是一个重要的概念，在我们理解能量动态中起着至关重要的作用。它有助于解释不同系统中能量是如何储存和转移的，从简单的机械装置到复杂的自然过程。通过掌握势能的原理，我们可以更好地欣赏支配我们物理世界的力量和能量之间的微妙平衡。随着我们继续探索和创新，势能的应用无疑会扩展，带来新的技术和解决方案，以应对我们今天面临的挑战。