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Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 2442515X     EISSN : 25281976     DOI : http://dx.doi.org/10.30870/gravity.vxix
Core Subject : Science, Education,
Astronomy Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics
The focuses of the manuscript received in the Gravity journal is limited to the topic: Physics Education (Media, Educational Policy, Assessment, Learning Model) Theoretical Physics Material Physics Earth and Environmental Physics Astrophysics Medical Physics Computational Physics and Instrumentation
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 9 Documents
 1 
Search results for , issue "Vol 10, No 2 (2024)" : 9 Documents clear
Development of an Interactive Digital Physics Module (IDMP) on the Concept of Global Warming to improve students' Problem Solving Skills Fajrin, Virgiani Pangestika; Wibowo, Firmanul Catur; Nasbey, Hadi; Bunyamin, Muhammad Abd Hadi; Khamis, Noorzana Binti
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 10, No 2 (2024)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v10i2.27020

Abstract

Problem Solving Skills (PSS) are essential skills in life because they help students find creative and innovative solutions to various complex problems. Apart from that, global warming is one of the physics materials studied in Phase E of the Independent Curriculum. Through learning with the Interactive Digital Physics Module (IDMP), students can learn scientific principles and concepts to solve problems. However, so far physics learning has focused more on physics products, while aspects of scientific processes and attitudes that should be trained are often neglected. The aim of this research is the development of an interactive digital physics module (IDMP) on the concept of global warming to improve students' problem solving skills. This research method uses the ADDIE model with a total sample of 37 consisting of 10 males and 27 females regarding the problem solving skills of students in one of the schools in Banten Province, Indonesia. The results of the research show that the characteristics of the IDMP on the concept of global warming for student learning and the Problem Solving Skills test consisting of 4 indicators Clearly defining the problem increased by 0.71, Developing a plan of action increased by 0.72, the effectively implementing the plan indicator increased by 0.63 and the valuing indicator and reflecting on the outcome increased by 0.65 category. The average N-gain result of these four indicators is 0.69, meaning that students' problem solving skills have increased in the moderate category.
Comparison of friction coefficient of static and sliding determination methods: conventional, video tracking and IoT-based Gideon, Samuel; Sumarti, Heni
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 10, No 2 (2024)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v10i2.27940

Abstract

The prevalent physics parameter in the concepts of friction are the friction coefficient of static and sliding. The objective of this research is to determine the friction coefficient of static and sliding by means of conventional measurement, video-tracking as well as proposed IoT-based measurement likewise to compare the results of each methods correspondingly theoretical references. Two universal systems in determining friction coefficient of static and sliding are reproduced, involves both conventional and IoT-based measuring instruments: flat block against flat runway and flat block against inclined runway. Video-tracking is the most precise between conventional and IoT-based method as its %RSD mean value of interval reading and angle of inclination respectively 6.22% and 0.88%. In case determination of friction coefficient of static three methods have equal %TE mean value of 22.85% for oak-based block on cast iron plank excluded slightly 0.49% of differences than assumed %TE value of video-tracking. Each methods are considerably accurate since each friction coefficient of sliding are theoretical values required range of 0.300 – 0.500. for oak-based block on cast iron plank IoT-based measurement has the smallest mean value of %TE indicating most accurate between two other methods.
Characterization of the cough monitoring device for TB patients based on the MAX9814 sound sensor Musfiana, Masria; Widodo, Aris; Annas, Muhamad Azwar
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 10, No 2 (2024)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v10i2.28340

Abstract

Mycobacterium tuberculosis is the cause of tuberculosis (TBC), one of the deadliest diseases in the world that affects the respiratory system. One of the nations having the highest number of tuberculosis cases worldwide is Indonesia. Health professionals must improve patient monitoring as one way to address this issue. This work aims to compile and describe monitoring instruments. The monitoring sensor is intended to help medical professionals treat patients and raise the quality of life for TB patients. Using advancements in technology, specifically the Internet of Things (IoT) to remotely operate electronic equipment, the Arduino Cloud Web serves as a platform for transmitting and storing patient cough data, enabling medical professionals to Recognize the intensity of the cough at any moment and act accordingly. Data on the sensor's accuracy and error values, sensitivity, repeatability, precision, and resolution are gathered as part of this monitoring sensor characterisation process. The instrument was calibrated using an Audiosensor with a 1000Hz audio generator and an SLM (Sound Level Meter) calibrator prior to data collection. The investigation yielded excellent results, with an accuracy rating of 96,14% and an error of 3,86%. This figure is reasonably close to the estimated value of 5% that has been calculated for the Gaussian distribution. The SLM with a sensor has an average value of 0.05, whereas the audiotool has a sensor value of 0.02. 50% is the repeatability value, 0.01% is the precision value, and 0.0125 is the sensor resolution.
The effect of problem based learning STEM (PBL STEM) on students' systems thinking skills on global warming material Saputri, Syafah Anggriani; Suryadi, Ahmad
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 10, No 2 (2024)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v10i2.25683

Abstract

This study explores the effect of PBL-STEM on students' systems thinking skills in global warming topics. This research is a quantitative study with a quasi-experimental design. This study was conducted in one of the public high schools in South Tangerang. The participants involved were 72 students. In the experimental class, students learned with PBL-STEM, and the control group used conventional learning. The system thinking instrument was developed using 24 tested multiple-choice questions with a reliability of 0.83. The results showed that PBL-STEM significantly affected students' systems thinking skills (p < 0.05). The experimental class students' systems thinking was higher than the control class' systems thinking. Furthermore, systems thinking skills in the experimental class increased, but the highest value was at level 1 with the essential difficulty; in the control class levels 1 and 2, there was a more significant increase. This study can be continued for future research investigating the effect of PBL STEM on systems thinking skills in different contexts.
Efektivitas Alat Peraga Medan Magnetik Digital Berbasis Arduino Uno untuk Meningkatkan Pemahaman Siswa SMA Sumiati, Sumiati; Ramadani, Santri; Fauzan, Alvin Syahrul; Rusdiana, Dadi
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 10, No 2 (2024)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v10i2.23887

Abstract

The study addresses the challenges often associated with the abstract nature and mathematical complexity of physics, particularly in relation to the concept of magnetic fields. To facilitate visual learning, the study aims to assess the efficacy of a teaching aid centered around a toroid, the researcher developed using Arduino Uno and Hall effect sensors. The research employs a quantitative one-group pretest-posttest design, measuring outcomes through test scores and student questionnaires. The N-Gain test indicates a moderate increase in student understanding concept. The results of the analysis of student responses through questionnaires had shown that students had found it easier to understand the magnetic field material when using Arduino-based magnetic field teaching aids, and the learning media used had made it easier for students to remember the magnetic field material. The findings support the effectiveness of the Arduino Uno-based digital magnetic field teaching aid in improving students' understanding of toroidal magnetic fields.
Investigasi Potensi Penggunaan Nanofluida Water-CuO untuk Ekstraksi Energi pada Abandoned Geothermal Well Syaharussajali, Syaharussajali; Suyanto, Suyanto; Wahyuono, Ruri Agung
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 10, No 2 (2024)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v10i2.27892

Abstract

Indonesia has a geothermal potential of 24 Gigawatts (GW), making Indonesia the second largest country with geothermal potential. High investment costs are still a challenge in the development of geothermal energy, where the cost of drilling geothermal wells is the most expensive with a cost of more than 50% of the total project cost. One solution to this problem is retrofitting abandoned wells with a closed loop well system (double pipe heat exchanger). Reusing abandoned wells to extract heat energy only costs about a third of the cost of making a new geothermal well. However, the low heat transfer value of this system makes it rarely applied as a power plant. Therefore, the thesis research analyzes the effect of adding CuO nanoparticles in the base fluid (water) of a double pipe well as a solution to improve heat transfer performance. The effect of nanoparticles on closed loop wells is modeled using a CFD simulation approach. The results of the CFD simulation will be used as input in calculating the performance of the Organic Rankine Cycle system which is used to determine the potential for electricity generation. Based on the calculation results, it was obtained that CuO nanoparticles with a concentration of 4%wt had the greatest heat transfer among other nanoparticle variations and this was in line with the power output produced, which was 2045 kW.
Pengembangan Program Pembelajaran Internet of Things Control Solution (IoT Consol) pada Mata Kuliah Media Pembelajaran Fisika Nurlia, Siti Rosyadah; Guntara, Yudi; Saefullah, Asep
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 10, No 2 (2024)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v10i2.25393

Abstract

This research focuses on developing an Internet of Things control solution (IoT consol) learning program in physics learning media courses. This study uses the Research and Development (R&D) method with the Thiagarajan 4D development model consisting of four stages: Define, Design, Develop, and Disseminate. The learning program products include semester learning plans, student worksheets, learning modules, and assessment sheets. Data collection techniques include product feasibility test sheets and student response questionnaire sheets. The feasibility test data for the learning program is analysed descriptively based on the feasibility test criteria for product development, referring to the Likert scale 1-7. The results of the product development research obtained a feasibility value with overall feasibility criteria for learning device elements with a value of 93% in the very good category, and the results of student responses obtained a value of 77.77% in the good category. The developed IoT consol learning program was feasible for physics learning media courses based on data analysis.
Study of regional topography and rainfall distribution using the Inverse Distance Weighted (IDW) interpolation method in Serang City Al Kansaa, Hanifah Nuraini; Ruhiat, Yayat; Saefullah, Asep
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 10, No 2 (2024)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v10i2.28155

Abstract

Indonesia has a reasonably large area with a high level of weather and climate diversity, causing various parts of the region to experience rain with different characteristics, one of which is influenced by the topography of the area so that it is not possible to use just one rain gauge to describe the rain in a region. Therefore, it requires the average rainfall from several nearby rain measurement stations or posts. This research aims to describe the influence of regional topography on the distribution of rainfall in Serang City using the Inverse Distance Weighted (IDW) interpolation method by varying the power value and processing and analyzing using the Geographic Information System (GIS). The research method used is non-experimental quantitative with spatial reclassification analysis. The data used is secondary data collected from previously existing data. The results of the research show that in areas that are at low altitudes and have gentle slopes, the average rainfall will be low, namely 1414.91 mm/year, and vice versa; if areas are at high altitudes and have steep slopes, the average rainfall is The rainfall will be high namely 1644.6 mm/year.
Identifikasi Bidang Gelincir Dengan Menggunakan Metode Geolistrik Tahanan Jenis Sebagai Upaya Mitigasi Bencana Tanah Longsor (Studi Kasus : Dusun Payan, Desa Punten, Kota Batu) Pratiwie, Dessy Lutfiani; Susilo, Adi; Kamali, Ahmad Byan; Dwinanda, Indah Gumilang
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 10, No 2 (2024)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v10i2.24135

Abstract

A sliding plane is a layer below the surface that is impermeable. The sliding plane becomes a place where the soil mass experiences movement so that the weathered layer above it experiences landslides following the slope. Payan Hamlet, located in Punten Village, Batu City, which is the research area, is included in a landslide-prone village as evidenced by the recapitulation of BPBD disaster data for Batu City during 2022, 6 landslides occurred. The geoelectric method used in this study is the Wenner configuration. It was used to identify the subsurface condition and interpret the slide plane and direction of the landslide. There are 5 trajectories in this study with 5 m electrode spacing. Based on the results of 2D data processing, the distribution of resistivity values in the research area is diverse. The resistivity value is divided into 3 (three) categories. The low resistivity category with a value of 13 - 51 Ωm is interpreted as a clay layer, the medium resistivity category with a value of 70 - 100 Ωm is interpreted as a tuff layer, and the high resistivity category with a value of 100 - 200 Ωm is interpreted as volcanic breccia. The interpretation of the layer that becomes the sliding field in the research area is the tuff layer with a depth of ± 3.8 - 4m. Based on the results of 2D data processing and calculation of the degree of slope, it can be analysed that the direction of the landslide leads to the southeast side of the research area. Installation of evacuation route signs around the research area is considered as a disaster mitigation effort that can be done

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