Jurnal Fisika Papua

Analysis of Water Flow Rate in the Kemiri River, Jayapura District

2025-02-24T23:32:45+00:00

Kali Kemiri Sentani frequently experiences flooding, particularly during periods of intense rainfall. Given the critical importance of flood risk mitigation, this study aims to analyze the water flow rate in Kali Kemiri and investigate the key factors influencing its dynamics. The research was conducted within the Kali Kemiri watershed in Jayapura Regency, focusing on a watershed area with a total study area of 1,640 m², mapped at a small scale across two measurement points. Flow rate measurements were performed at two locations along Kali Kemiri using the float method. The study recorded key hydrological parameters, including water depth, river width, and flow velocity. These data were utilized to calculate the volumetric flow rate at the designated measurement sites. This methodology provides a comprehensive understanding of the hydrodynamic factors affecting water flow, which is essential for assessing flood hazards in the region. The results indicate that the highest discharge rate was observed at the first measurement point, with an average flow discharge of 0.188 m³/s and a velocity of 0.52 m/s. In contrast, the second measurement point recorded a discharge of 0.115 m³/s with a flow velocity of 0.29 m/s. These findings suggest a direct correlation between flow velocity and discharge, wherein an increase in velocity corresponds to an increase in discharge. Furthermore, the study highlights that the flow rate is influenced by watershed area, watershed volume, and watershed slope, which collectively govern the hydrological behavior of the river system.

Effect of Angle of Incident on Angle of Reflection in Reflection of Light in a Plane Mirror

2025-02-15T00:38:32+00:00

Light reflection is a basic phenomenon in optics that has been explained in depth in the law of light reflection. This law states that the angle of incidence of a light ray is equal to its angle of reflection when it hits a flat surface. Light reflection can occur on various surfaces, both smooth and rough. This study aims to experimentally corroborate the application of the law of light reflection on a flat mirror. The research method used is a quantitative method with an experimental design designed to measure the angle of incidence and angle of reflection of a laser beam directed at a flat mirror. This method allows researchers to collect numerical data that can be analyzed statistically. The results of the data analysis show that there is a linear relationship between the angle of incidence and the angle of reflection, with the values of the two angles always being equal for each measurement. This result is in line with the law of light reflection and provides strong evidence to support the correctness of the law.

Classroom Management Strategies to Increase the Effectiveness and Efficiency of Physics Learning

2025-02-15T00:34:37+00:00

Classroom management is one of the key elements in achieving effective and efficient learning goals, especially in physics subjects. The aim of this article is to analyze the impact of classroom management on student learning outcomes and the factors that influence its effectiveness. This research was conducted using a literature research method which involved analysis of various relevant literature. Analysis shows that good classroom management, including classroom layout, attention to individual student needs, and use of supporting equipment, significantly increases student motivation and achievement of learning outcomes. The biggest challenge in classroom management is the diversity of student characteristics and limited choices. Therefore, teachers need to develop adaptive and creative management skills to create a conducive learning environment. The conclusion of this article confirms that effective classroom management not only supports the physics learning process but also contributes to the overall quality of education.

Behaviour Management and Digital Technology: Strategies for Managing an Effective and Organized Classroom

2025-02-15T00:37:22+00:00

The development of digital technology and student behaviour management requires educators to develop more effective and organized classroom management strategies. This article discusses the integration of behaviour management with digital technology in the context of modern classroom management. The research objective is to identify and analyze effective strategies for creating an organized learning environment by utilizing digital technology as a supporting tool for student behaviour management. The approach used is qualitative-descriptive through literature review analysis or literature study. The research results show that the combination of behaviour management with digital technology can increase the effectiveness of classroom management through a student behaviour monitoring system, the use of gamification in learning and personalization of learning. This research concludes that the use of digital technology in behaviour management has a positive impact on classroom organization, student engagement, and achievement of learning goals. The implications of this research provide practical guidance for educators in integrating digital technology to create a more effective and structured learning environment.

Groundwater Aquifer Analysis Using the Schlumberger Configuration Vertical Electrical Sounding Resistivity Method with Dar Zarrouk Parameters in the Komplek Perkantoran Gunung Merah Sentani

2025-02-15T00:39:07+00:00

A study has been conducted using the Vertical Electrical Sounding (VES) method of Schlumberger configuration and Dar Zarrouk parameters which aims to determine the range of resistivity values of the subsurface layer, the depth of the groundwater aquifer layer, the thickness of the water aquifer layer and the range of Dar Zarrouk parameter values at the research site. The research location is in the office complex of Gunung Merah Sentani, Jayapura Regency as many as four sounding points with a maximum length of 175-300 meters. The results of this research show that the VES 1 point has two aquifer layers with a depth range of 4 - 7 meters and 14-31 meters. which is a fragment of Gneiss rock containing sand, gravel and clay. The resistivity values of each aquifer layer are 26-45 Ωm and 16 Ωm respectively. At VES point 2, the inversion model parameters show that there are three aquifer layers in the depth range of 2 - 4 meters, 7 - 13 meters and 30 - 91 meters. And the resistivity values of each aquifer are 6, 13 and 35 Ωm. At VES point 3, the inversion model parameters show that there are two aquifer layers in the depth range of 5 - 16 meters and 25 - 66 meters with resistivity values for each aquifer layer of 15 and 22 Ωm respectively. At VES point 4, the inversion model parameters show that there are two aquifer layers in the depth range of 3 - 5 meters and 7 - 20 meters with the resistivity values for each aquifer layer being 24 and 7 Ωm respectively.

Identifying Aquifer Layers Using the Vertical Schlumberger Configuration Resistivity Geoelectric Method in the Permata Hijau Housing Complex, Koya Barat Village, Muara Tami District, Jayapura

2024-10-29T04:51:04+00:00

Research on identifying aquifer layers using the vertical Schlumberger Configuration Resistivity Geoelectric method was carried out in the Permata Hijau Housing Complex, Koya Barat Village, Muara Tami District, Jayapura City. This research aims to determine the resistivity, location and depth of the aquifer layer. The research methods used are field geophysical surveys and geophysical computing. The field geophysical survey method used is the geoelectric method. Field geophysical surveys, using the IREST300f resistivity meter, obtained other data on potential and electric current strength for field resistivity analysis. Computational geophysical methods provide the actual resistivity and vertical profile of soil layers. The number of vertical research points is 5 points. The research results show that there is an aquifer layer at each research point with variations in resistivity values, location and depth. The groundwater aquifer layers are vertical, namely at point 1 there are 2 free aquifer layers with resistivities of 3.34 Ωm and 1.65 Ωm. At point 2 there are 4 layers of unconfined aquifer with resistivities of 9.31 Ωm, 7.13 Ωm, 3.30 Ωm and 6.12 Ωm. At point 3 there are 3 layers of unconfined aquifer with resistivities of 5.61 Ωm, 3.00 Ωm and 1.61 Ωm. At point 4 there are 2 layers of unconfined aquifer with resistivities of 9.30 Ωm and 4.52 Ωm. At point 5 there are 3 unconfined aquifer layers with resistivities of 2.35 Ωm, 8.38 Ωm and 3.18 Ωm. The free aquifer layer is visible at point 1, found in layer 8 with a depth of 4.95-8.80 m and layer 10 with a depth of 19.20-24.00 m. The free aquifer layer is visible at point 2, found in layer 5 with a depth of 3.00-6.80 m and layer 7 with a depth of 16.10-20.00 m. layer 9 with a depth of 8.80-19.20 m and layer 11 6.12 Ωm with a depth of 53.00-76.00 m. The free aquifer layer is visible at point 3, found in Layer 5 with a depth of 3.40-6.00 m; layer 9 with a depth of 15.50-37.30 m; and layer 12 with a depth of 80.00-97.00. The free aquifer layer is visible at point 4, Layer 6 with a depth of 4.28-7.35 m. and Layer 10 with a depth of 50.00-57.40 m. The free aquifer layer is visible at point 5, Layer 4 with a depth of 5.31-5.65 m. Layer 8 has a depth of 15.50-39.00 m and layer 11 has a depth of 93.40-146.00 m.