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The center of mass (CM) is an abstract quantity but essential as a reference point used to understand the position and movement of an object or a system of objects. Many researchers have used video recordings to analyze and understand the movement of objects in a system. In a system with colliding objects, the motion can be obtained precisely from video analysis. Estimating the momentum of each object can allow analysis of the conservation of linear momentum of the collision.

The momentum is often used to analyse the dynamics of the motion of an experimental interaction between objects. Meanwhile, the interaction force tends to be challenging to observe and obtain. In this study, a simple video-assisted experiment was used to observe the interaction forces during the interaction of two magnetic objects. The interaction force between magnetic dipoles was obtained for each object position during the interaction experiment. The maximum force interaction was obtained when the two objects were at the minimum distance. The velocity of the object significantly influences the minimum distance between two objects during the interaction. In addition, we found that the law of linear momentum conservation holds for this interaction. Furthermore, the total kinetic energy before and after the interaction is identical, indicating an elastic interaction. This study is hopefully beneficial for students to reduce the limitations in understanding the interaction forces between objects.

In diffraction experiments, natural gratings often create uncommon diffraction patterns compared with those resulting from manufactured gratings. This study analyzed a unique diffraction pattern obtained by a grating from a flying termite wing. A ring-like diffraction pattern was formed because of the grating morphology from a flying termite wing, which consisted of horizontal- and vertical-structured slits. The mechanism of diffraction pattern formation is also provided. The distance between slits was measured using digital microscope images and a diffraction experiment, with the results coming to an agreement. Using this grating in a diffraction experiment can help educators provide an alternative diffraction experiment that supports students in studying the topic in a more complex manner.

An experiment using the volumetric flux of a water stream was used to find the initial velocity of the water as it performs parabolic motion. The trajectories were measured with different initial velocities, comparing the maximum height and range values with the theoretical calculations. The closeness of the measured values to the calculations make this an experiment that could be suitably performed by school students studying projectile motion.

This article, published in the journal Insect Science, examines the nesting behavior of paper wasps from a physics perspective. The study focuses on how paper wasps arrange their larvae within the nest to achieve mechanical stability. By analyzing various paper wasp nests in Central Java, Indonesia, the study finds that the closer the distance between the center of mass of the larval system and the center of mass of the nest, the more stable the nest becomes. The findings suggest that paper wasps strategically arrange their larvae to achieve equilibrium in their nests. [Extracted from the article]

When we travel in a train moving at a certain velocity, we observe the stationary objects outside are moving backwards. These stationary objects seem to move due to a relative velocity. Consider that the stationary object outside the train is a man standing on the stationary floor watching a woman moving on a train. The woman on a train will see the man moving backward with similar velocity as her. In kinematics, this magnitude of relative velocity will always be the same whether the man is far away from or near the train, as long as he stands on the stationary floor.

The center of mass (CM) is an abstract quantity but essential as a reference point used to understand the position and movement of an object or a system of objects. Many researchers have used video recordings to analyze and understand the movement of objects in a system. In a system with colliding objects, the motion can be obtained precisely from video analysis. Estimating the momentum of each object can allow analysis of the conservation of linear momentum of the collision. [ABSTRACT FROM AUTHOR]

Virgin coconut oil (VCO) has become a multifunctional material for biomedical applications due to its remarkable health benefits. The use of VCO for biomedical applications has seen tremendous growth over recent years, triggering researchers to develop various approaches for VCO utilization. Nanofibers‐based structure offers promising properties to encapsulate VCO, enhancing its performance and broadening its application in the medical field. Studies of VCO‐loaded polymeric nanofibers for biomedical applications are currently gradually rising. Recently, in nanofibers technology, centrifugal jet spinning (CJS) offers cost‐efficient and higher production rates to yield nanofibers compared to the other methods. This review summarizes recent advances of VCO for biomedical applications. Comprehensive suggestions for encapsulating VCO into nanofibers using the CJS technique are also provided. Highlights of future challenges in utilizing the CJS technique to produce VCO‐loaded nanofibers for biomedical applications are also elaborated. [ABSTRACT FROM AUTHOR]

When we travel in a train moving at a certain velocity, we observe the stationary objects outside are moving backwards. These stationary objects seem to move due to a relative velocity. Consider that the stationary object outside the train is a man standing on the stationary floor watching a woman moving on a train. The woman on a train will see the man moving backward with similar velocity as her. In kinematics, this magnitude of relative velocity will always be the same whether the man is far away from or near the train, as long as he stands on the stationary floor. [ABSTRACT FROM AUTHOR]