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Latununuwe, Altje
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Education Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics

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Journal : PHYSIKOS Journal of Physics and Physics Education

 1 
Green Sintesis Dan Karakterisasi Material Nanokomposit TiO2/CuO Menggunakan Ekstrak Daun Wedelia trilobata (L.) Sarimanella, Stefhanie B.; Titahena, Apriliska; Latununuwe, Altje; Huliselan, Estevanus Kristian
PHYSIKOS Journal of Physics and Physics Education Vol 1 No 1 (2022): PHYSIKOS Journal of Physics and Physics Education
Publisher : Physics Education Study Program, Faculty of Teacher Training and Education, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/physikos.1.1.5933

Abstract

TiO2/CuO nanocomposite has been successfully synthesized using Wedelia trilobata (L.) leaf extract with TiCl3 and Cu(NO3)2 3H2O as precursors. The material formed was then characterized by scanning electron microscopy (SEM) to determine the shape and size and then energy dispersive X-ray (EDX) characterization to determine the atomic composition contained in this nanocomposite material. The results of SEM and EDX show that the material is spherical in shape and has an average size of 42 nm. The composition of TiO2 is 73.38% and CuO is 4.32%. Furthermore, the sample is characterized by X-ray diffraction (XRD) in which the diffraction peaks are at angles of 2 theta, 25.646° and 47.511° indicating TiO2 nanoparticle. Meanwhile, peaks are at 38.367° and 74.379° indicate CuO nanoparticle. Determination of the energy band gap of the material using the results of ultraviolet visible (UV-Vis) is 3.5 eV. Measurement of magnetic properties using VSM equipment. Based on the hysteresis curve, the TiO2/CuO nanocomposite material has diamagnetic properties and is a soft magnet material.
Penggunaan Metode Inkuiri Terbimbing Dalam Pengembangan LKS Fisika SMP Kelas VIII Pada Materi Getaran Dan Gelombang Katayane, Tetrin; Malawau, Seska; Latununuwe, Altje; Sabandar, Vederico Pitsalitz
PHYSIKOS Journal of Physics and Physics Education Vol 1 No 2 (2022): PHYSIKOS Journal of Physics and Physics Education
Publisher : Physics Education Study Program, Faculty of Teacher Training and Education, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/physikos.1.2.8421

Abstract

The research aimed to produce a physics student worksheet (LKS) on vibrations and waves using guided inquiry-based methods. The research conducted refers to the modification of the LKS development model using the 4-D model. Respondents as test subjects in this study consisted of 9 students in class VIII1 on a small scale and 22 students in class VIII3 on a large scale. Based on the results of the research conducted, the eligibility validation results for the LKS were classified as very feasible with an average score of 3.7%, and could be used as a study guide. Meanwhile, the results of the analysis of the legibility of worksheets, both on small-scale and large-scale trials, were classified as high criteria or easily understood by students with an average percentage of acquisition scores on a small scale of 63% and a large scale of 67%. Furthermore, the results of the analysis of student responses to the development of LKS used during the learning process both on a small scale and on a large scale are in very good qualifications with an average acquisition score on a small scale of 92.45% and a large scale of 94.61%. The results of this study indicate that the development of worksheets based on the guided inquiry learning model can make students more active in obtaining information to solve problems given by the teacher so that vibration and wave material can be understood properly.
Pengembangan Peralatan Eksperimen Gerak Lurus Beraturan (GLB) Berbasis Smartphone Kakay, Pricillia Patrecia; Renyaan, Novie Evelyn; Ririhena, Yohana; Latununuwe, Altje; Huliselan, Estevanus Kristian; Singerin, Sarlota
PHYSIKOS Journal of Physics and Physics Education Vol 1 No 2 (2022): PHYSIKOS Journal of Physics and Physics Education
Publisher : Physics Education Study Program, Faculty of Teacher Training and Education, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/physikos.1.2.8540

Abstract

Smartphone-based experimental equipment has been successfully developed for measuring a straight motion at a constant velocity. Read the data that comes out on the smartphone using the Accelerator Monitor software. The data is in graphic form. From the graph, it can be seen that the acceleration is zero. Furthermore vary the displacement distance, which is 100 cm and 130 cm to measure the velocity of the toy cars. The results showed that the time taken was 5 seconds and 6.5 seconds respectively for a displacement of 100 cm and 130 cm. The calculation of the velocity value for both displacements is the same value of 20 cm⁄s. This shows that the velocity value is constant which is equal to the graph results showing zero acceleration.
Peningkatan Penguasaan Konsep Usaha Dan Energi Menggunakan Model Flipped Classroom Berbantuan Video Youtube Lulang, Irma Yani; Latununuwe, Altje; Malawau, Seska; Sabandar, Vederico Pitsalitz; Esomar, Ketarina
PHYSIKOS Journal of Physics and Physics Education Vol 2 No 1 (2023): PHYSIKOS Journal of Physics and Physics Education
Publisher : Physics Education Study Program, Faculty of Teacher Training and Education, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/physikos.2.1.9317

Abstract

Research has been successfully carried out using the flipped classroom model assisted by YouTube videos on the concepts of work and energy. This study aims to determine the increasing mastery of the concept. The research sample was class X MIA6 SMA Negeri 11 Ambon, even semester of the 2021/2022 academic year, which consisted of 32 students. The sampling technique uses purposive sampling. Increased mastery of students' concepts in the high category 96.875% of students and 3.125% of students in the medium category. The average increase in N Gain is 0.80 or in the high category.
Penentuan Resistansi Dinamis Pada Dioda Silikon 1n4002 Melalui Pengukuran Karakteristik Arus Terhadap Tegangan (I-V) Berbasis Arduino Mega 2560 Pary, Tri Dewi Julianti; Latununuwe, Altje; Manuhutu, Fredrik; Kesaulya, Noke; Huliselan, Estevanus Kristian
PHYSIKOS Journal of Physics and Physics Education Vol 2 No 1 (2023): PHYSIKOS Journal of Physics and Physics Education
Publisher : Physics Education Study Program, Faculty of Teacher Training and Education, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/physikos.2.1.9336

Abstract

An instrument for measuring I-V characteristics and determination of the dynamic resistance of a Silicon 1n4002 diode based on Arduino Mega 2560 has been successfully developed. This measurement was carried out by increasing the bias voltage periodically from 0 V to 5 V and observing the resulting forward voltage and forward current for each increase in the bias voltage. There is an increase in current when the diode voltage reaches 0.7 V, which is the diode barrier voltage. This happens if the limit resistor installed in the circuit is 100 Ω. The largest dynamic resistance value is 593.069 Ω, which is below the forward voltage of 0.6 V. Furthermore, the smallest dynamic resistance value is 2.293 Ω which is above the forward voltage of 0.7 V. The greater the value of the current flowing in the diode circuit, the smaller the dynamic resistance value of the diode and the smaller the value of the current flowing, the greater the dynamic resistance of the diode.
Penentuan Koefisien Redaman Zat Cair (Air, Minyak Goreng dan Oli) Menggunakan Analisis Osilasi Teredam Silahooy, Stevi; Latununuwe, Altje; Huliselan, Estevanus K.; Kesaulya, Noke; Nggolaon, Delpina
PHYSIKOS Journal of Physics and Physics Education Vol 3 No 1 (2024): PHYSIKOS Journal of Physics and Physics Education
Publisher : Physics Education Study Program, Faculty of Teacher Training and Education, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/physikos.3.1.13858

Abstract

This research aims to analyze the effect of load mass on the damping coefficient of liquid substances such as water, cooking oil, and oil. The load masses used are 71 grams, 81 grams, 91 grams, and 101 grams. This study employs an experimental method with a damped oscillation analysis approach aided by Origin software. The research results indicate a significant influence of load mass on the frequency (Hz) and damping coefficient (γ) values of the liquid substance, where the larger the load mass, the higher the frequency (Hz) and damping coefficient (γ) values of the liquid substance. The study also examines the damping constants of each liquid substance. The results show that the damping constants of each liquid substance, namely water, cooking oil, and oil, are respectively 0.049 kg/s, 0.107 kg/s, and 0.201 kg/s.
Desain Modul Praktikum Gerak Lurus Beraturan (GLB) Berbasis Smartphone Yang Digunakan Untuk Praktikum Di Luar Laboratorium Renyaan, Novie Evelyn; Latununuwe, Altje; Latupeirissa, Asry N.; Malawau, Seska
PHYSIKOS Journal of Physics and Physics Education Vol 3 No 1 (2024): PHYSIKOS Journal of Physics and Physics Education
Publisher : Physics Education Study Program, Faculty of Teacher Training and Education, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/physikos.3.1.14046

Abstract

Lurus Beraturan (GLB) practicum outside the laboratory. The trial was conducted in the form of a practicum carried out in elevators and on escalators using smartphones. To read the data from the smartphones, acceleration monitor software was used, where the measurement data is displayed graphically. Before trialing the practicum module, validation was carried out by two media experts with an average feasibility percentage of 96.25% and two material experts with an average feasibility percentage of 95.66%, both of which were declared valid. The module was then tested on 25 students from the Physics Education Study Program, class of 2022, to measure the students' understanding of the GLB concept. The research results show that students were able to understand the material and solve the given problems contained in the module. This is evident from the average initial practicum task score obtained by the students, which was 77.8 with a good category. Meanwhile, the average student score for the tasks after the practicum was 89.6, categorized as very good, and the average score for data analysis and graph interpretation was 81.
Co-Authors Esomar, Ketarina Estevanus Kristian Huliselan Fredrik Manuhutu, Fredrik Kakay, Pricillia Patrecia Katayane, Tetrin Kesaulya, Noke Latupeirissa, Asry N. Lulang, Irma Yani Malawau, Seska Nggolaon, Delpina Pary, Tri Dewi Julianti Renyaan, Novie Evelyn Ririhena, Yohana Sarimanella, Stefhanie B. Silahooy, Stevi Singerin, Sarlota Titahena, Apriliska Vederico Pitsalitz Sabandar