scholarly journals Compiuter technologies assist potential energy with experiments

2020 ◽  
Vol 2 (7) ◽  
pp. 297-302
Author(s):  
Alion Alizoti ◽  
Floran Vila ◽  
Zenun Mulaj ◽  
Polikron Dhoqina
Keyword(s):  
Potential Energy ◽  
Physical Quantity ◽  
Simple Experiment ◽  
Conservation Of Energy ◽  
Perfect Form ◽  
Physical Quantities ◽  
Research Studies

Energy is an important physical quantity to study and reconstruct nature at our own leisure.  Implementations of new tendencies in Physics show that energy, and other physical quantities, need careful examinations before being applied. Following international and national recommendations, our present work focused on several research studies concerning potential energy. A simple experiment was developed to verify the conservation of energy. At the end, the participants were convinced that it is really difficult to achieve the conservation of energy to its perfect form. They also ended with some intriguing conclusions, similar to the research studies this activity referred to.   

The International System of Units (SI)

1976 ◽  
Vol 46 (9) ◽  
pp. 623-628 ◽  
Author(s):  
George G. Stoner
Keyword(s):  
Physical Quantity ◽  
International System ◽  
Numerical Factor ◽  
International System Of Units ◽  
System Of Units ◽  
Physical Quantities

Le Système International d'Unités (officially designated SI in all languages) provides a logical, interconnected framework for measurements in commerce, industry, and science, including the textile and allied fields. SI is based on only nine elemental units. Seventeen important derived units have special names. Any number of derived units is possible to meet particular needs. SI has only one unit for each type of physical quantity. Prefixes cover a range of 1036 to form multiples and submultiples. SI has explicitly distinct units for mass (the kilogram) and force (the newton). Numerous older units of pressure, energy, and power are superseded by the pascal, the joule, and the watt, respectively. Each equation defining a derived unit contains only the number 1 as the numerical factor. SI has salient advantages because it is a system of units coherent with respect to the system of physical quantities and the equations relating them.

scholarly journals The design of electric drives with electronic protection devices

2018 ◽  
Vol 226 ◽  
pp. 04012
Author(s):  
Boris D. Khastsaev ◽  
Larisa M. Dedegkaeva ◽  
Maksim P. Maslakov
Keyword(s):  
Physical Quantity ◽  
Linear Dependence ◽  
Electronic Device ◽  
Measuring Circuit ◽  
Structural Scheme ◽  
Electric Drives ◽  
Intelligent Sensors ◽  
Protection Devices ◽  
Physical Quantities ◽  
Improved Characteristics

The possibility of designing an electronic device for protection and diagnostics of electric drives with improved characteristics is considered. The technique and algorithm of design of similar devices, the structural scheme of the device constructed on their basis are offered. To improve the characteristics of the device of protection and diagnostics of electric drives in the work it is proposed to provide for the use of measuring transducers with linear dependencies of the output values on the controlled ones. The latter is possible as a result of the use of measuring circuits in measuring transducers with linearized dependencies of the output values on the input and the use of intelligent sensors. As a measuring circuit for the construction of measuring transducers is considered the measuring circuit of Kenigsberg, which is characterized by a linear dependence of the output active value of the passive measured (controlled physical quantities). At the same time, the intelligent sensors are additionally assigned the function of linearization of the output dependence of a «simple» sensor on the controlled physical quantity.

scholarly journals A New Method for Calculating Energy of Matter

2021 ◽  
Author(s):  
Qing Li
Keyword(s):  
Physical Quantity ◽  
Approximate Calculation ◽  
Space Time ◽  
Finite Range ◽  
Mass Energy ◽  
Dimensional Representation ◽  
Mathematical Basis ◽  
Energy Formula ◽  
Comparison Relation ◽  
Physical Quantities

An approximate calculation of the spatial characteristics on finite range is required, so one quantitative continuum represents the accumulation of infinite great quantities is artificially divided it into smaller and camparable parts in which calculus operation can be applied .This operation is defined as Theorem 1 in which infinity is not involved, there is a camparable finity is constantly (forever) approaching and not reaching infinity, and only staying within a finite range. Theorem 1 can exist in this paper as a new mathematical basis for physics. Because the essence of all physical quantities is size comparison, and the size comparison relation of matter can only be space/time, so relation formula space/time is the only expression of the concept of matter, all physical quantities are applicable to this expression, each different physical quantity is a multi-dimensional representation of this expression. A new mass energy formula is aslo derived from this paper.

scholarly journals Knowledge Management for Problem Solving Using Semistructured Contradiction Matrix Based on Physical Quantity Description

2019 ◽  
Vol 1 (1) ◽  
pp. 1983-1992 ◽  
Author(s):  
Tamotsu Murakami
Keyword(s):  
Knowledge Management ◽  
Problem Solving ◽  
Physical Quantity ◽  
Partial Match ◽  
Exact Match ◽  
Value Similarity ◽  
Similarity Calculation ◽  
Physical Phenomena ◽  
Physical Quantities

AbstractA Contradiction Matrix of TRIZ that classifies problems to solve as contradictions of features is an effective framework of knowledge management for problem solving. The features, however, may have a problem of completeness because they may not cover contradictions about all physical phenomena. In addition, rigidly structured Contradiction Matrix may have a problem of searchability because a relevant contradiction may not be properly searched if a recorder and a retriever describe it differently. To solve these problems, this paper proposes a semistructured contradiction matrix using not TRIZ features but physical quantities in SI unit. To enable not only exact match but also partial match in searching for relevant contradictions, dimensional similarity and qualitative value similarity of physical quantity and similarity between contradictions are defined. The proposed method is implemented as software in Python and contradictions are described in XML and stored in a semistructured matrix. From the result of similarity calculation between stored contradictions, possible effectiveness of the proposed method is confirmed.

The Role of Context and Attention on the Effect of Numerical Digit Value on Time Estimation

2019 ◽  
Vol 7 (2) ◽  
pp. 148-167
Author(s):  
Stefan Pichelmann ◽  
Thomas H. Rammsayer
Keyword(s):  
Physical Quantity ◽  
Time Estimation ◽  
Attentional Focus ◽  
Moderating Effect ◽  
Contextual Effect ◽  
Time Reproduction ◽  
Physical Context ◽  
Stimulus Salience ◽  
The Difference ◽  
Physical Quantities

The effect of task-irrelevant numerical values on perceived duration is well established. More precisely, higher numerical values (e.g., ‘9’) correspond to longer estimated durations than lower numerical values (e.g., ‘1’). So far, sparse evidence for two moderators, physical context and stimulus salience, has been provided. The contextual effect refers to an increased difference between estimated durations for low and high numerical values when Arabic digits are presented simultaneously with large physical quantities (e.g., ‘kg’), instead of small physical quantities (e.g., ‘g’). Similarly, the salience effect refers to the observation that differences in time estimations increase when attention is directed to numerical values’ magnitude. Using a time reproduction paradigm, we conducted four experiments to further investigate these two moderators and their possible interaction. In Experiments 1a and 1b, target intervals differed in duration (800, 1000, 1200 ms), numerical value (1, 2, 8, 9), and physical quantity (mg, kg, without). Experiments 2 and 3 additionally included the manipulation of the attentional focus (numerical value or physical quantity) and further quantities (cm, km). Our results supported the positive effect of numerical values on reproduced durations. This was also true for the moderating effect of stimulus salience, which was always significant. In contrast, no evidence for a contextual effect was observed even when participants’ attention was directed on the difference in physical quantity. In conclusion, our data challenge the existence of a moderating contextual effect, while supporting the moderating effect of stimulus salience.

scholarly journals Dynamical Potential Energy: A New Approach to Ocean Energetics

2013 ◽  
Vol 43 (2) ◽  
pp. 457-476 ◽  
Author(s):  
Fabien Roquet
Keyword(s):  
Potential Energy ◽  
General Circulation ◽  
Circulation Model ◽  
Power Input ◽  
Ocean Model ◽  
Conservation Of Energy ◽  
Available Potential Energy ◽  
Power Inputs ◽  
Ocean Energetics ◽  
Dynamical Potential

Abstract The concept of available potential energy is supposed to indicate which part of the potential energy is available to transform into kinetic energy. Yet it is impossible to obtain a unique definition of available potential energy for the real ocean because of nonlinearities of the equation of state, rendering its usefulness largely hypothetical. In this paper, the conservation of energy is first reformulated in terms of horizontal anomalies of density and pressure for a simplified ocean model using the Boussinesq and hydrostatic approximations. This framework introduces the concept of “dynamical potential energy,” defined as the horizontal anomaly of potential energy, to replace available potential energy. Modified conservation equations are derived that make it much simpler to identify oceanic power input by buoyancy and mechanical forces. Closed budgets of energy are presented for idealized circulations obtained with a general circulation model, comparing spatial patterns of power inputs generated by wind and thermal forcings. Finally, a generalization of the framework to compressible fluids is presented, opening the way to applications in atmosphere energetics.

Mathematical Modelling of Vertical Looped Water Slide Using Matlab

2021 ◽  
Vol 9 (11) ◽  
pp. 1918-1931
Author(s):  
M. Rohan Kini
Keyword(s):  
Mathematical Model ◽  
Kinetic Energy ◽  
Potential Energy ◽  
Mathematical Modelling ◽  
Arc Length ◽  
Exposure Limits ◽  
Centripetal Acceleration ◽  
Conservation Of Energy ◽  
Euler’S Method ◽  
Force Variation

Abstract: A conceptual mathematical model of a water slide with vertical loops is developed. The principle used is the conservation of energy. The thrill experienced by a rider on a water slide is mainly due to the variation of G-force acting on the rider through the course of the ride. The geometry of the slide is developed by plotting G-force variation with the arc length of the loop. The G-force exposure limits should meet with the standards set by the F24 committee on amusement parks and rides. The coordinates of the slide geometry are determined by using Euler’s method of discretized equations. Keywords: G-Force, Centripetal acceleration, Clothoid curve, Weightlessness, Potential Energy, Kinetic Energy

scholarly journals Inference to the Best Explanation

2020 ◽  
Vol 16 (1) ◽  
pp. 99-116
Author(s):  
Peter J. Riggs
Keyword(s):  
Kinetic Energy ◽  
Potential Energy ◽  
Physical Quantity ◽  
Modern Chemistry ◽  
Do So

It has been claimed that kinetic energy is an objective physical quantity whilst at the same time maintaining that potential energy is not. However, by making use of the method of ‘inference to the best explanation’, it may be readily concluded that potential energy is indeed an objective physical quantity. This is done for an example drawn from the foundations of modern chemistry. In order to do so, the criteria of what counts as ‘most probable’ and ‘most reasonable’ are defined and then employed for choosing the best explanation.

A unified approach to the kinematics of a spreader suspended by multiple cables

2003 ◽  
Vol 217 (3) ◽  
pp. 289-312 ◽  
Author(s):  
J-W Lee ◽  
D-H Kim ◽  
J-H Oh
Keyword(s):  
Form Factor ◽  
Potential Energy ◽  
Minimum Energy ◽  
Deformation Energy ◽  
Unified Approach ◽  
Energy Principle ◽  
Minimum Energy Principle ◽  
Gantry Cranes ◽  
Physical Quantities ◽  
Natural Way

This paper presents the kinematics of a spreader suspended by four cables, which is widely used in industrial gantry cranes. The approach is based on the minimum energy principle, which provides exact solutions to the kinematics of the spreader. The energy consists of potential energy of the spreader and elastic deformation energy of suspension cables. By minimizing the sum of energy, tensions and elongations of cables are obtained and the kinematics of the spreader is determined in a natural way. Through numerical simulations, various results for the kinematics of the spreader are presented for a typical gantry system for parallel cabling and non-parallel cabling. The results include transition from the four-cable suspension state to a three-cable suspension one. For non-parallel cabling, variation of various physical quantities with respect to the form factor is illustrated.

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