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PENENTUAN PERCEPATAN GRAVITASI BUMI BERBANTUAN MEDIA PHET DENGAN TEKNIK RATA-RATA BERBOBOT Saumarachmawati, Putri Ani; Toifur, Moh
EduFisika: Jurnal Pendidikan Fisika Vol 9 No 3 (2024): EduFisika: Jurnal Pendidikan Fisika Volume 9 Nomor 3 December 2024
Publisher : Program Studi Pendidikan Fisika FKIP Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59052/edufisika.v9i3.36705

Abstract

The value of gravitational acceleration (g) varies across different locations depending on the distance from the surface to the Earth's center of mass. Additionally, the value of ggg is influenced by the data processing method employed. This study aims to determine the Earth's gravitational acceleration in the Banten region using a pendulum assisted by the Phet pendulum-lab simulation. The experiment was conducted using two methods: the average technique and the weighted average technique. For the average technique, the period was measured 10 times for a string length of 80 cm. For the weighted average technique, the period of the pendulum swing was measured at varying string lengths from 80 to 100 cm, with five variations, each measured 10 times. The results of the study showed that the gravitational acceleration determined using the average technique was 9.72 ± 0.28 m/s², while the weighted average technique yielded 9.78 ± 0.08 m/s². With the reference value of gravitational acceleration being 9.80 m/s², the weighted average technique successfully corrected the relative error from 0.82% to none. Moreover, the determination of gravitational acceleration using the weighted average technique produced more accurate results compared to the average technique. This study also confirms that the PhET simulation is an effective and reliable tool for measuring gravitational acceleration, particularly when physical experimental conditions are less than ideal. The weighted average technique significantly contributes to improving measurement precision, making it valuable for both physics research and education
Home Made Four-Point Probe: Case Studies of the Wobbly A and B Probes Toifur, Moh.; Sukarelawan, Moh. Irma; Okimustava, Okimustava
Indonesian Review of Physics Vol. 6 No. 1 (2023)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v6i1.8362

Abstract

A simulation on the effect of probe deviation on sheet resistivity value (Rs) of Cu/Ni thin film was carried out in a home-made four-point probe (HM-FPP) type. This began by solving the Rs formula for normal probes, and then for wobbly probe when it was either A, or both A and B. The formula was implemented on a thin layer of Cu/Ni, which was a low temperature sensor material obtained from electrodeposition for 60s assisted by a 200G magnetic field at a current density of 0.07A/mm2. An electric current of 0.20118A was flown from probe A to D in order to produce a potential difference between probe C and D of 0.0005 volts. Furthermore, the distance between the probes was 5 mm and the deviation of each probe A and B were simulated from -0.5 mm to 0.5 mm. The maximum allowable limit for the relative error of Rs or SRs is 5%. The results showed that the ideal Rs value was 0.113 ohm/sq. Furthermore, for HM-FPP in which the wobbly probe only A, there is no problem encountered with the variation of the deviation because all SRs are less than 5%. For wobbly probes A and B, if they are on the same side of the center point of each probe, the maximum allowable deviation is 0.3 mm. The SRs for this case were 4.6%. However, if they are on different sides of the center point of each probe, the maximum allowable deviation is 0.1 mm with SRs of 2.9%. With these results, HM-FPP craftsmen must be more careful in making the size of the probe hole.
Enhancing Self-Regulated Learning Through Blended Learning: Insights from Educational Theories and Practices Warnaningtyas, Murtiatmi; Sulisworo, Dwi; Toifur, Moh
Jurnal Genesis Indonesia Vol. 3 No. 03 (2024): Jurnal Genesis Indonesia
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/jgi.v3i03.662

Abstract

The COVID-19 pandemic has forced us to transform traditional learning methods into online or distance learning. This shift has affected not only students but also teachers and parents. Face-to-face learning was replaced by the use of platforms such as Google Classroom, WhatsApp groups, and others. Students, who previously interacted directly with teachers, had to adapt to learning through Google Classroom or WhatsApp groups. This transition required students to develop their own learning patterns and self-regulated learning (SRL). By combining simple online learning via WhatsApp groups or Google Classroom with more interactive learning methods, students' SRL can be enhanced. Observations from teachers and responses from students indicate that blended learning has a positive impact on SRL among vocational high school students.
Lembar Kerja Berbasis Model Pembelajaran Curious Note Program untuk Meningkatkan Kemampuan Berfikir Saintifik Matavani, Heru; Sulisworo, Dwi; Toifur, Moh.
Jurnal Genesis Indonesia Vol. 4 No. 01 (2025): Jurnal Genesis Indonesia
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/jgi.v4i01.860

Abstract

Di era digitalisasi, inovasi dan penyesuaian dalam proses pembelajaran terus dilakukan untuk meningkatkan kualitas pendidikan. Penelitian ini bertujuan untuk menstimulasi kemampuan berpikir saintifik siswa melalui penerapan Lembar Kerja Peserta Didik (LKPD) berbasis model pembelajaran Curious Note Program (CNP). Secara khusus, penelitian ini menganalisis kelayakan, keefektifan, dan kepraktisan LKPD berbasis CNP dalam pembelajaran fisika. Metode yang digunakan adalah Research and Development (R&D) dengan model 4D (Define, Design, Develop, dan Disseminate). Produk yang dikembangkan diuji coba pada siswa kelas XII MAS UNIVA Medan. Hasil penelitian menunjukkan bahwa rata-rata nilai belajar siswa mencapai 81,51, dengan 52 dari 60 siswa mencapai ketuntasan belajar. Hal ini mengindikasikan bahwa LKPD berbasis CNP efektif dalam meningkatkan hasil belajar siswa. Selain itu, analisis respons siswa menunjukkan tingkat kepraktisan sebesar 85,73% dengan kriteria "sangat praktis."  Dengan demikian, LKPD berbasis CNP layak, efektif, dan praktis dalam memfasilitasi siswa untuk mengembangkan kemampuan berpikir saintifik. Penelitian ini memberikan kontribusi signifikan dalam upaya meningkatkan kualitas pembelajaran fisika di era digital.
Numeracy, verbal skills, learning motivation, and self-regulation as predictors of academic success in high school Warnaningtyas, Murtiatmi; Sulisworo, Dwi; Toifur, Moh
JPPI (Jurnal Penelitian Pendidikan Indonesia) Vol 11, No 1 (2025): JPPI (Jurnal Penelitian Pendidikan Indonesia)
Publisher : Indonesian Institute for Counseling, Education and Theraphy (IICET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29210/020254661

Abstract

This study explores the influence of numerical literacy, verbal ability, learning motivation in science, and self-regulation on academic achievement among high school students. In today's dynamic educational landscape, success requires more than academic knowledge—it also demands motivation and self-directed learning strategies. This research aimed to examine how these four factors interrelate to predict learning outcomes. Employing an ex-post facto quantitative design, data were collected from 119 high school students across four schools using validated questionnaires and learning outcome assessments. The variables included numerical literacy, verbal ability, and science learning motivation as independent variables, self-regulation as a mediating variable, and academic achievement as the dependent variable. The data were analyzed using Partial Least Squares Structural Equation Modeling (PLS-SEM). The results showed that all three independent variables significantly and positively affected self-regulation: numerical literacy (β = 0.410, p < 0.001), verbal ability (β = 0.291, p < 0.01), and science learning motivation (β = 0.215, p < 0.05). Furthermore, self-regulation positively influenced academic achievement (β = 0.405, p < 0.001). These findings underscore the critical role of self-regulation as a bridge between cognitive skills and academic performance. By strengthening students’ ability to manage their own learning, educators can enhance academic success, especially in numeracy and science-based learning environments.
Penentuan Ukuran Butir (Particle Size) Cu dan Ni pada Lapisan Cu/Ni Menggunakan Metode Scherrer Termodifikasi Rizka Nuzul Islamiyati; Moh. Toifur
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol. 7 No. 2 (2023): November Edition
Publisher : Universitas Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jipfri.v7i2.2294

Abstract

The Cu/Ni layer is a layer that can be used as a material for low temperature sensors. The coating can be made by means of electroplating. Electroplating has limitations in controlling the number and size of metal particles. Therefore, the purpose of this study was to determine the grain size of Cu and Ni in electroplated Cu/Ni layers at varying voltages from 6 to 8 volts using the modified Scherrer method and to analyze the effect of stress on grain size. The method used in this research is descriptive method using a quantitative approach. The results showed that the grain size of the Cu substrate was D= (0.5071 ± 0.06) nm. As for the Ni layer, stress affects grain size. A voltage of 7 volts can produce the largest grain size of 0.776059 nm.
Perlindungan Sensor Suhu Cu/Ni dengan Nitroselulosa Surur, Miftahus; Toifur, Moh.; Okimustava, Okimustava; Putri, Siti Zahra Helmania
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol. 8 No. 2 (2024): November Edition
Publisher : Universitas Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jipfri.v8i2.3820

Abstract

Coating of Cu/Ni with nitrocellulose (NC) has been carried out with the aim of determining the effect of using NC as a protective film on the sensitivity and activation energy of the sensor. The samples used were Cu/Ni and Cu/Ni/Cu where the NC coating on Cu/Ni was carried out using a spray method with a pressure of 1.2 Mpa. Both sensor samples were used to measure the temperature of liquid nitrogen (liquid N2) which was varied from -160C - 0C. In addition to temperature, voltage and current were also measured. The sensitivity value was obtained from the slope of the resistance curve against temperature, while the activation energy was obtained from the slope of the logarithm of conductivity against one per absolute temperature. From the sensitivity test, it is known that both sensors have a tendency to be more sensitive when the temperature is lowered, but the presence of the NC layer causes a decrease in sensitivity of up to 18.9%, namely from 3.95 /C to 3.18 /C at a temperature of -160C following the equation S(T)=0.10e-0.012T. The use of NC protective layer can also increase the activation energy by 1.3%, namely from (4.29  0.01)x10-9 eV to (4.35  0.01)x10-9 eV. These results can be used as a consideration for temperature sensor manufacturers that the use of NC protective layer is important but can reduce sensor sensitivity.
Plating Nikel pada Kawat Tembaga untuk Meningkatkan Kepekaan sebagai Sensor Suhu Rendah Zahra, Siti Zahra Helmalia Putri; Toifur, Moh.
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol. 9 No. 1 (2025): May Edition
Publisher : Universitas Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jipfri.v9i1.3402

Abstract

This research aims to determine the sensitivity of the sensor as a low temperature sensor from the Ni-coated Cu coil with electroplating technique. The deposition parameters are set, namely the electrolyte solution by dissolving NiSO4, NiCl2, H3BO4 and distilled water, voltage 4.5V, electrode distance 4 cm, electrolyte temperature 60 ° C for 4 minutes. The sensor sensitivity test was carried out by varying the temperature from 0˚C to -150˚C by inserting the sensor in a liquid nitrogen thermos and lifting it to its original position. Acquisition of temperature and voltage data at any time was carried out with the help of a transducer. Based on the results of the study, the Voltage-Temperature curve shows that the sensitivity value obtained by the Cu coil is S(T) = -1E-06 T - 5E-05 and the Cu/Ni coil S(T) = -4E-06 T - 0.0002. The results of the T=-200 ˚C projection show that the sensitivity value of the Cu/Ni coil has a greater value than the Cu coil. The Cu coil shows a value of 0.00035 while the Cu/Ni coil is 0.0014. So Ni has an effect on increasing the sensitivity of the Cu coil as a low temperature sensor.
Resistivity of SnO2 Gas Sensor to Humidity, CO2 Gas, and Temperature in Food Decomposition Process Setiawan, Indra Budi; Toifur, Moh.; Ishafit, Ishafit; Okimustava, Okimustava; Hajatulloh, Ridlo; Susanto, Eko
Lontar Physics Today Vol 4, No 3 (2025): November 2025
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/lpt.v4i3.24866

Abstract

This study aims to determine the sensitivity of a gas sensor based on a Cu substrate coated with SnO2 through an electroplating process, involving variations in electrolyte solution temperature and thermal oxidation. The deposition parameters were set as follows: electrolyte solution prepared by dissolving SnCl2 in distilled water, applied voltage of 4.5 V, electrode distance of 3 cm, and electroplating duration of 3 minutes. Sensor sensitivity tests were carried out by observing the food decomposition process, placing both the food sample and sensor in a testing chamber. Data acquisition of temperature, humidity, CO2 concentration, and sensor resistance was conducted using transducers and Logger Pro software. Based on the results, the sensor sample with an electrolyte temperature of 60°C (sample B) exhibited better performance than the sensor sample with an electrolyte temperature of 30°C (sample A). Sample B demonstrated greater responsiveness to temperature changes, with a coefficient of determination R2 = 0.66943. It also showed better detection of CO2 concentration changes with R2 = 0.98225. This improvement is attributed to a more effective electroplating process, as indicated by the mass change and thickness of the SnO2 layer. The sensitivity of sample B, defined by the equation S([CO2]) = 9.42E-5 - 1.17E-9[CO2], was superior to that of sample A, which followed the equation S([CO2]) = -2.34E-4 + 4.25E-9[CO2], as shown in the plotted graphs. Sample B exhibited a negative linear curve with a gentle slope, indicating a stable gas sensor behaviour.
EXPLORING SENIOR HIGH SCHOOL STUDENTS’ MISCONCEPTIONS IN NEWTONIAN MECHANICS: A QUALITATIVE INVESTIGATION Rodika Utama; Okimustava; Moh. Toifur; Nurlailah
Multidiciplinary Output Research For Actual and International Issue (MORFAI) Vol. 5 No. 4 (2025): Multidiciplinary Output Research For Actual and International Issue
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/morfai.v5i4.3959

Abstract

Newtonian mechanics remains a fundamental yet conceptually challenging domain for high school students. Numerous studies have shown that students consistently hold alternative conceptions that contradict scientific understanding, particularly in relation to Newton’s laws of motion. This study aimed to explore senior high school students’ misconceptions in Newtonian mechanics through a qualitative investigation. Data were collected from 28 Grade 11 students in an Indonesian high school using open-ended diagnostic tests, semi-structured interviews, and classroom observations. Thematic coding identified four major categories of misconceptions: inertia, force–motion relationships, action–reaction interactions, and free-body diagram representations. Among these, misconceptions of Newton’s third law were the most dominant, with the majority of students believing that the object with greater mass exerts a greater force during interaction. Inertia misconceptions, such as the belief that motion requires continuous force, were also widespread. The findings confirm that students’ misconceptions are robust cognitive frameworks reinforced by everyday experiences and traditional teaching practices. Pedagogically, the results highlight the importance of incorporating inquiry-based learning, multiple representations, and cognitive conflict strategies to promote conceptual change. This study contributes to the literature on physics education by providing context-specific insights into persistent misconceptions in Newtonian mechanics and suggesting implications for more effective teaching practices.
Co-Authors . Ridwan A, NURAMALIA Adi Jufriansah Adi, Rusli Agil, Mazani Azizan Aliyah Chaliq, Marhamatul Arief Hermanto Arief Hermanto Ayu Lusiyana, Ayu Azizah, Annisa Nur Azmi Khusnani Bambang Sudarsono Bambang Sudarsono Bayu Setiawan Carissa Viola Putri Alfian Choirul Huda Danurdara Setiamukti Darsono . Destri Ratna Ma'rifah Deswitan Deswitan Dian Artha Kusumaningtyas Didin S Winatapura Dimas Nurachman Dwi Sulisworo Effilia Allun Jaladri Eko Susanto Eko Susanto Erwin Prasetyo Ety Dwiastuti Fardanti, Aribah Chika Fatkhur Rohman Fayakun Muchlis Fiqry, Rizalul Hajatulloh, Ridlo Halleyna Widyasari Hamzah Hamzah Haris Rosdianto Hendro Setyono Hindaresmi Hindaresmi Irfan Rosyadi Irfan Yunianto Irnin Agustina Dwi Astuti Irnin Agustina Dwi Astuti Irnin Agustina Dwi Astuti, Irnin Agustina Dwi Ishafit Ishafit Ishafit Ishafit Ishafit Ishafit Ishafit Islamiyati, Rizka Nuzul Izzati, Elsarina Nur Jaafar, Rosly Jarot Suseno Jayati Jayati Kamsul Abraha Kamsul Abraha Kurniasari, Efi Leni Leni Listyaningrum, Trisna Avi M Taufiqurrahman M. Safrudin M. Taufiqurrahman Matavani, Heru Miftahus Surur, Miftahus Moh. Irma Sukarelawan Muchairah Haji Hasan Muchlis, Fayakun Muhammad Faisal Muhammad Ihsan Mutmainah, Nur Fitri Ningrum, Rr. Sinta Kusuma Nisrina Karimah Nur Hamida Siregar NURAMALIA A Nurlailah O, OKIMUSTAVA Okimustava Okimustava Okimustava PRASETYO, ERWIN Prayoto Prayoto Putri, Siti Zahra Helmania Rahayu, Fatonah Rahayu, Natika Rahmatika, Zulfa ‘Amalia Ria Asep Sumarni Ria Asep Sumarni, Ria Asep Ridwan Ridwan Ridwan Ridwan Ridwan Ridwan Rismawan Rismawan Rismawan Rismawan Rizka Nuzul Islamiyati Rosly Jaafar Rr. Sinta Kusuma Ningrum Rusli Adi Rusli Irwanto Safirudin . SATRIYAS ILYAS Saumarachmawati, Putri Ani Setiawan, Indra Budi Silvia Laeli Singgih, Suwito Siregar, Nur Hamida Sugiyanto Sugiyanto Sujatmoko Sujatmoko Sujatmoko Sujatmoko Sujatmoko Sujatmoko Suparwoto Suparwoto Suparwoto Suparwoto Supriyana Supriyana Suryandari Suryandari Thoha Firdaus Toni Kus Indratno Tono Wibowo Utama, Rodika Utami, Listiati Budi Venty Aghnani Nurhamidy Warnaningtyas, Murtiatmi Wijanarka, Willi Anindita Willi Anindita Wijanarka Wisnu Ari Adi Y. Pramudya, Y. Yahya Hanafi Yoga Budi Bhakti Yudhiakto Pramudya Yuli Hastiani Yuni Latifah Zahra, Siti Zahra Helmalia Putri