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All Journal Inovasi Fisika Indonesia (IFI) Jurnal Pendidikan IPA Indonesia
Mohammad Roy Thoriqul Haq
Universitas Negeri Semarang
Earth & Planetary Sciences Education Electrical & Electronics Engineering Materials Science & Nanotechnology Physics

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Analisis Pengaruh Massa Jenis Cairan terhadap Frekuensi dan Amplitudo dalam Praktikum Resonansi Menggunakan Wine Glass Mohammad Roy Thoriqul Haq; Riski Dwi Handayani; Luluk'Atul Jannah; Septiko Aji
Inovasi Fisika Indonesia Vol. 15 No. 1 (2026): Vol 15 No 1
Publisher : Prodi Fisika FMIPA Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ifi.v15n1.p30-38

Abstract

Abstrak Resonansi merupakan fenomena fisika di mana suatu sistem bergetar dengan amplitudo maksimum ketika mendapat rangsangan pada frekuensi tertentu. Fenomena ini banyak dimanfaatkan dalam berbagai bidang, terutama dalam pembuatan alat musik untuk menghasilkan bunyi yang indah. Penelitian ini bertujuan untuk menganalisis peristiwa resonansi pada wine glass dengan memfokuskan kajian pada pengaruh massa jenis cairan yang dimasukkan ke dalam gelas. Aplikasi Phyphox digunakan sebagai alat bantu untuk merekam data frekuensi dan amplitudo resonansi secara digital dan real-time. Wine glass dipilih sebagai medium eksperimen karena bentuk dan sifatnya memungkinkan terjadinya resonansi akustik yang dapat diamati secara jelas. Melalui pengujian dengan berbagai cairan yang memiliki perbedaan massa jenis, penelitian ini berupaya mengungkap bagaimana karakteristik fluida memengaruhi perilaku resonansi, terutama dalam kaitannya dengan gelombang bunyi dan amplitudo getaran.   Abstract Resonance is a physical phenomenon in which a system vibrates with maximum amplitude when stimulated at a certain frequency. This phenomenon is widely utilized in various fields, especially in the manufacture of musical instruments to produce beautiful sounds. This research aims to analyze resonance events in wine glass by focusing on the effect of the density of the liquid put into the glass. Phyphox application is used as a tool to record the frequency and amplitude of resonance data digitally and in real-time. Wine glass was chosen as the experimental medium because its shape and properties allow acoustic resonance to be observed clearly. Through testing with various liquids that have different densities, this research seeks to reveal how fluid characteristics affect resonance behavior, especially in relation to sound waves and vibration amplitude.
Uncovering Anxiety in Science Education: Psychometric Validation of the Brief Science Learning Anxiety Scale (BSLAS) Rizki Nor Amelia; Ani Rusilowati; Sri Rejeki Dwi Astuti; Ika Nur Fitriani; Arfatur Rohman; Mohammad Roy Thoriqul Haq
Jurnal Pendidikan IPA Indonesia Vol. 15 No. 1 (2026): March 2026
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v15i1.34196

Abstract

Science learning anxiety can hinder pre-service teachers' engagement with scientific concepts and negatively affect their future teaching practices. However, instruments specifically designed to measure this construct in science education contexts remain limited. This study developed and validated the Brief Science Learning Anxiety Scale (BSLAS) to measure science learning anxiety among pre-service science teachers, based on Hooda and Saini's theory of academic anxiety. The development process involved five stages: scale design, item development, item selection, validation, and evaluation. Content validity was evaluated using Aiken's V, which indicated strong agreement among experts (V = .91). Exploratory factor analysis with 320 respondents identified five dimensions: worry, procrastination, study skills deficits, emotionality, and task-generated interference, explaining 49.04% of the variance. Confirmatory factor analysis on an independent sample of 324 respondents supported the factorial structure and demonstrated an acceptable model fit. The scale also demonstrated adequate convergent and discriminant validity and high internal reliability (ω = .847-.917). These findings indicate that the BSLAS has sound psychometric properties and can serve as a practical instrument for identifying science learning anxiety among pre-service teachers. The instrument may also support further research in science education and help inform teaching strategies that foster more adaptive science learning environments.
Co-Authors Ani Rusilowati Arfatur Rohman Ika Nur Fitriani Luluk'Atul Jannah Riski Dwi Handayani Rizki Nor Amelia Septiko Aji Sri Rejeki Dwi Astuti