attractive force

简明释义

引力

英英释义

例句

1.The attractive force between the magnets pulled them together with great strength.

磁铁之间的吸引力以强大的力量将它们拉在一起。

2.The attractive force of the earth pulls objects towards its center.

地球的吸引力将物体拉向其中心。

3.In physics, we study the attractive force between charged particles.

在物理学中，我们研究带电粒子之间的吸引力。

4.The attractive force between two masses can be calculated using Newton's law of gravitation.

两个质量之间的吸引力可以通过牛顿的万有引力定律计算得出。

5.Gravity is an attractive force that keeps planets in orbit around the sun.

重力是一种吸引力，使行星围绕太阳运行。

作文

The concept of attractive force plays a significant role in various fields of science, particularly in physics and chemistry. An attractive force refers to the pull that one object exerts on another, leading them to come closer together. This phenomenon can be observed in everyday life, from the way magnets attract each other to the gravitational pull that the Earth exerts on objects. Understanding this fundamental principle can help us appreciate the complexities of the universe around us.In physics, the most commonly discussed type of attractive force is gravity. Gravity is a natural phenomenon by which all things with mass are brought toward one another. The larger the mass of an object, the stronger its gravitational pull. For instance, the Earth, being significantly massive, has a strong attractive force that keeps us grounded. This is why when we jump, we eventually come back down – the Earth’s gravity is constantly pulling us back toward its center.Another example of attractive force can be found in electromagnetism. Here, opposite charges attract each other. For example, in an atom, protons (which have a positive charge) exert an attractive force on electrons (which have a negative charge). This attractive force is crucial for the stability of atoms and ultimately forms the basis of all matter in our universe. Without this attractive force, atoms would not hold together, and life as we know it would not exist.In chemistry, the concept of attractive force extends to molecular interactions. Molecules are held together by various types of bonds, including ionic and covalent bonds, which are formed due to attractive forces between atoms. For instance, in water (H2O), the oxygen atom has a stronger electronegativity than the hydrogen atoms, creating a polar molecule. The attractive force between the positive end of one water molecule and the negative end of another leads to hydrogen bonding, which is essential for many of water's unique properties, such as its high boiling point and surface tension.The study of attractive forces is not limited to scientific disciplines; it also finds applications in engineering and technology. For example, understanding the attractive forces at play in materials science can lead to the development of stronger and more efficient materials. Engineers often consider these forces when designing structures or machines to ensure they can withstand various forces without collapsing.In conclusion, the term attractive force encompasses a wide range of phenomena that are essential to our understanding of the physical world. Whether it is the force of gravity keeping us on the ground, the electromagnetic forces holding atoms together, or the molecular interactions that dictate the properties of substances, attractive forces are fundamental to the existence and behavior of matter. By studying these forces, we can gain deeper insights into the workings of nature and harness this knowledge for technological advancements. Therefore, the concept of attractive force is not merely a scientific term but a gateway to exploring the intricate connections that bind our universe together.

“引力”这一概念在科学的多个领域中扮演着重要角色，尤其是在物理学和化学中。“引力”指的是一个物体对另一个物体施加的吸引力，使它们彼此靠近。这种现象可以在日常生活中观察到，从磁铁之间的相互吸引到地球对物体的引力。理解这一基本原理有助于我们欣赏周围宇宙的复杂性。在物理学中，最常讨论的“引力”类型是重力。重力是一种自然现象，所有具有质量的物体都会相互吸引。物体的质量越大，其引力就越强。例如，地球由于其巨大质量，具有强大的“引力”，使我们保持在地面上。这就是为什么当我们跳起来时，最终会落回地面的原因——地球的重力不断将我们拉回其中心。另一个“引力”的例子可以在电磁学中找到。在这里，相反的电荷会相互吸引。例如，在原子中，质子（带正电）对电子（带负电）施加“引力”。这种“引力”对于原子的稳定性至关重要，最终构成了我们宇宙中所有物质的基础。如果没有这种“引力”，原子将无法结合，生命也就无法存在。在化学中，“引力”的概念扩展到分子间的相互作用。分子通过各种类型的键结合在一起，包括离子键和共价键，这些键是由于原子之间的“引力”形成的。例如，在水（H2O）中，氧原子的电负性强于氢原子，形成极性分子。一个水分子的正端与另一个水分子的负端之间的“引力”导致氢键的形成，这对于水的许多独特性质（如高沸点和表面张力）至关重要。对“引力”的研究不仅限于科学领域；它在工程和技术中也有应用。例如，了解材料科学中的“引力”可以促进更强大和更高效材料的发展。工程师在设计结构或机器时往往考虑这些力量，以确保它们能够承受各种力量而不坍塌。总之，“引力”一词涵盖了一系列现象，对于我们理解物理世界至关重要。无论是让我们站在地面上的重力、维持原子结合的电磁力，还是决定物质性质的分子相互作用，“引力”都是物质存在和行为的基础。通过研究这些力量，我们可以深入洞察自然的运作，并利用这些知识推动技术进步。因此，“引力”这一概念不仅仅是一个科学术语，而是探索将我们宇宙联系在一起的复杂关系的入口。