614 resultados de busca sobre mass energy equivalent
Simulações
- A RAMPA
- Associe Frações (HTML5)
- Balançando (HTML5)
- Balanceamento de Equações Químicas (HTML5)
- Balões e Empuxo
- Capacitor
- Comer & Exercitar-se
- Condutividade
- Construir uma Fração (HTML5)
- Controle Quântico Ótico
- Decaimento Alfa
- Densidade (HTML5)
- Desvio da Luz (HTML5)
- Difusão (HTML5)
- Efeito Fotoelétrico
- Energia na Pista de Skate: Básico (HTML5)
- Espalhamento de Rutherford (HTML5)
- Espectro de Corpo Negro (HTML5)
- Estados da Matéria
- Estados Quânticos Ligados
- Estrutura de Bandas
- Experimento de Davisson-Germer
- Explorador da Igualdade (HTML5)
- Explorador da Igualdade: Básico (HTML5)
- Explorador da Igualdade: Duas Variáveis (HTML5)
- Expressões (HTML5)
- Fissão Nuclear
- Flutuabilidade
- Forças e Movimento: Noções Básicas (HTML5)
- Formas de Energia e Transformações (HTML5)
- Frações: Igualdade (HTML5)
- Frações: Intro (HTML5)
- Frações: Números Mistos (HTML5)
- Geleiras
- Gerador
- Interferência Quântica
- IRM Simplificada
- Isótopos e Massa Atômica (HTML5)
- Jogo da Datação Radiativa
- Laboratório de Colisões (HTML5)
- Laboratório de Eletromagnetismo de Faraday
- Laboratório de Força Gravitacional (HTML5)
- Laboratório de Força Gravitacional: Básico (HTML5)
- Laboratório do Pêndulo (HTML5)
- Laboratório do Capacitor: Básico (HTML5)
- Lâmpadas de neônio e outras lâmpadas de descarga
- Lasers
- Lei de Hooke (HTML5)
- Massas e Molas (HTML5)
- Massas e Molas
- Massas e Molas: Básico (HTML5)
- Meu Sistema Solar (HTML5)
- Micro-Ondas
- Modelos do Átomo de Hidrogênio
- Modos Normais
- Módulo de Pouso Lunar
- Moléculas e Luz (HTML5)
- Monte um Átomo (HTML5)
- Monte um Núcleo (HTML5)
- Movimento de Projétil (HTML5)
- Onda em Corda (HTML5)
- Pacotes de Onda e Tunelamento Quântico
- Energia na Pista de Skate (HTML5)
- Poços Duplos e Ligações Covalentes
- Propriedades dos Gases (HTML5)
- Rampa: Forças e Movimento
- Reações e Taxas
- Reações Reversíveis
- Reagentes, Produtos e Excesso (HTML5)
- Ressonância
- Reta Numérica: Operações (HTML5)
- Semicondutores
Atividades
- Energy Skate Park Basics: Mechanical Energy Lab
- Conservation of Energy 2: graphs analysis
- Generating Equivalent Expressions
- Isotopes and Atomic Mass - Guided Inquiry Activity
- Conservation of Energy using Masses and Springs (homework version) (Inquiry Based)
- Isotopes and Atomic Mass - Clicker Questions
- Energy Skate Park Basics | Remote Lab
- Isotopes & Atomic Mass-Inquiry Activity
- Energy Skate Park Basics
- Energy Skate Park Basics - Clicker Questions
- e=mc2
- Masses and Springs Homework Determine Unknowns (Inquiry Based)
- Energy Skate Park Lab (html5)
- Energy skate park
- Energy Skate Park - Concept Questions Compendium
- Equivalent Expression Exploration
- Energy Analysis of a Mass Oscillating on a Spring
- Energy Skate Park-NGSS aligned HS
- Energy Forms Clicker Questions
- Exploring Average Atomic Mass
- Conservation of Energy 1: Introduction (qualitative approach)
- Energy Skate Park Clicker Questions (Inquiry Based)
- Conservation of Energy 4 Energy Skate Park: Calculations with Conservation of Mechanical Energy using time graphs (Inquiry Based)
- Comparing Ratios
- Energy Transformations
- conservation of mechanical energy
- Energy Skate Park Basics Lesson
- Maxwell-Boltzmann Distribution Curves
- Energy Chains
- Comparing Equivalent Expressions
- isotopes and atomic mass
- Energy Skate Park-NGSS aligned
- Potential and Kinetic Energy
- Exploring the Energy Skate Park
- Patterns and Ratios
- Investigating Density, Volume, Mass and Weight
- Density: How Does Density Relate to Mass &Volume and an Object's Interaction with Water?
- Introduction to energy- a chemical context
- Mechanical energy - Kinetic and Potential
- Hanging Mass
- Mechanical energy lab - Remote
- Fractions Tops and Bottoms
- Energy Skate Park Analysis Lab
- Electric Energy and Capacitance demonstrations (Inquiry Based)
- Energy Simulation Lab - Skate Park
- Forces and Motion: Finding the Mass of a Car
- Conservation of Energy using Masses and Springs (Inquiry Based)
- Energy, Forces, and Motion basics
- Finding Properties of Energy (via the skate park)
- Energjia kinetike dhe potenciale e trupit
- Energy Forms and Changes PhET Lab
- Energy Skater -- Introduction to Mechanical Energy Conservation
- Energy Forms and Changes Simulation
- Conservation of Energy for Middle School
- Momentum and Center of Mass
- Energy Skate Park for Middle School(Inquiry Based)
- Adding and Subtracting Expressions
- Kinetic and Potential energy
- Equivalent Fractions
- Finding Equivalent Fractions
- Intermolecular Forces and States of Matter - Interactive Lecture Demonstration
- Equivalent Fractions Day 3 of 3
- Isotopes and Atomic Mass
- Resistor Networks: Equivalent Resistance
- Introduction to Energy Model
- Position function of mass on spring
- Modeling Relative Atomic Mass
- Algebra-based Physics Semester one lessons, clicker questions, and schedule in pdf (Inquiry Based)
- Two Types of Energy - Mass & Spring
- mechanical energy - exploring kinetic and potential energy
- Temperature and Energy NGSS aligned
- Energy Skate Park Basics Energy Exploration
- Gravity Force Lab : calculations
- Build an Atom
- Energy in a Coil Spring
- Concept questions for Physics using PhET (Inquiry Based)
- Roller Coaster Physics Investigation
- Conservation of Energy - conceptual
- Lab: PhET Isotopes and Atomic Mass
- Thermal Energy Scientific Inquiry
- Energy Skate Park Worksheet
- Conservation of Energy Exploration with Skatepark Physics
- Energy Skate Park: Basics Lab
- Bending Light Exploration Lab
- Energy Skate Park Student Simulation
- Masses and Springs Simulation Homework
- Building Fractions
- Graphing Energy at the Skate Park
- Build an Atom: Introduction
- Conservation of Mechanical Energy
- Build an Atom - Guided-Inquiry Activity
- Conservation of mechanical energy
- Energy Skate Park Lab
- Conversation of Mechenical Energy
- conservation of mechanical energy
- Expanding and Factoring Algebraic Expressions
- Energy in a Skateboarder-Conservation of Energy
- Energy Skatepark!
- Introduction to Equivalent Fractions
- Energy Skate Park
- Energy Transfer
- Buoyancy: How Does Buoyant Force Act on Objects in a Fluid?
- Balancing Chemical Equations - Guided Inquiry Activity
- Energy Skate Park
- Energy Forms Simulation Activity
- Mixture of Isotopes and Atomic Mass
- Mixing paint with ratios
- CONSERVATION OF MECHANICAL ENERGY
- Intro to Energy Conservation
- Conservation of Mechanical Energy
- Energy Skate Park
- Inquiry to the Energy Skate Park
- conservation of mechanical energy
- Energy Forms and Changes
- Conservation of Energy (Energy Skate Park)
- Conservation of Mechanical Energy
- Kinetic and Potential Energy
- Energy skate park
- Energy Flow Chart Lab
- Formas y cambios de energía
- Energy Skate Park: Basics
- Conservation Of Mechanical Energy
- Bank Shots
- Energy Transformations
- Energy Skate Park - investigation
- Force and Motion: Mass vs. Speed
- Energy in a Pendulum
- Energy Park
- Energy Park
- Conservation of mechanical energy.
- Energy Conservation Simulation Lab
- Modeling Isotopes
- Conservation Of Mechanical Energy
- energy systems phet worksheet
- PhET Lab Energy Skate Park 2
- Conservation of Mechanical Energy
- How does mass effect the speed of a forced object?
- Relationship between frequency and mass, k, and g
- PhET Energy Skate park
- Energy Skate Park: Basics
- Kinetic, Potential and Total Energy: Claim, Evidence, Reasoning
- Isotopes activity sheet
- Energy Skate Park Lab Questions
- Virtual Lab Activity on Energy Forms and Changes in Systems
- Conservation of Energy
- Isotopes and Atomic Mass Phet Simulation Guided Inquiry
- Energy Skate Park Learning Goals for four activities (Inquiry Based)
- Hooke's Law and The Spring Constant
- Simple WS with Energy Forms & Changes pHet
- Measuring Mass With Springs
- Density Lesson (with Putty Lab)
- Balancing Chemical Equations - Clicker Questions
- Density-introduction
- Springs and Things
- Density and Buoyancy
- Force and Motion activity 2: Relating graphs and free body diagrams using Moving Man and Forces 1D (Inquiry Based)
- Balancing Chemical Equations - Inquiry based Introduction
- Plan de Clase Datación Radioactiva ☢
- Ενεργειακά Διαγράμματα
- Experimental Design with Forces
- Energy Simulation
- Energy Forms and Changes
- Phet Energy Forms and Changes Student Worksheet
- Time Period is Independent of Amplitude and Mass of the Pendulum
- Investigating Kinetic Energy
- Heat = Energy Transfer
- Electrical Charge Lab
- Energy Skate Park
- Skate Park Phet- Science 8 and ACC Science 8
- Energy Forms and Changes Lab!
- Thermal Energy Flow PhET Lab
- Masses and Springs: Energy
- Pendulum Energy
- Energy skate park
- Isotopes Guided Inquiry
- Pendulum Energy
- Conservation of Mechanical Energy (Lab Report)
- Paint Splat: Comparing Ratios
- Work and Energy Simulation Lab
- Grade 4 Changing Energy
- Exploring Equivalence with Rational Numbers: Part 1 Fractions less than or equal to 1
- Qualitative Introduction to Energy
- Energy Skatepark Adventures
- PhET Energy Simulations
- Energy waves digital lab
- Introduction to the Online Mass-Spring Lab
- Gravity Lab- intro
- Inquiry Equilibrium activity
- Introduction to Discharge Lamps
- Phet Simulation: Energy Form--Intro(Heat)
- Isotopes
- Isotopes PhET Activity
- Isotopes
- conservação da energia -
- Energia mecânica e sua conservação
- Phet Skate Park Inquiry Lab and Graphical Modelling Activity
- Exploring Chemical Reactions and the Law of Conservation of Mass
- Rollercoaster, Free Fall & Energy Conservation
- PhET Energy Sk8r sim Activity
- FORCES AND MOTION WITH WORK ENERGY
- Modeling Friction (Inquiry Based)
- Collision Lab : Introduction to One Dimension collisions
- Conductivity: an inquiry activity (also uses other sims)
- Energy Skate Park Basics Student Guide [HTML]
- Types of Energy Transferred Worksheet
- KE and PE with the pendulum, Student
- Concept Questions for Chemistry using PhET
- Intro to energy
- PHETman
- The Ramp--Conservation of Energy
- Year 8 Energy Transformations, Waste and Efficiency
- Energy Skate Park Formal Lab
- Designing Experiments Using Masses & Springs
- Build an Atom - Inquiry-based basics (homework version)
- Interpreting Chemical Symbols
- Exploring Equivalence with Rational Numbers: Part 2 Extending to Mixed Numbers
- Spring Mass Experiment
- Parliamo di temperatura
- D.C Circuit Simulation 2 - Series and Parallel
- Energia Mecânica no Energy Skate Park: Basics (HTML5)
- Modelling Motion
- Mass/Spring Activity
- Energy Skate Park Basics: Énergie potentielle et cinetique
- Lab Experiment
- Skate Park and Energy Conservation
- Energy Skate Park Lesson
- Potential Energy of A Spring (Elastic Potential Energy)
- Unusual cases of oscillation
- Using PhET in High School Chemistry- all my activities in pdf
- THE ATOMIC STRUCTURE LESSON PLAN
- Molecules and Light - Guided Inquiry Activity
- temperature and energy
- Energía mecánica
- Hablemos de temperatura
- La hauteur et la vitesse
- Energía Mecánica en su sistema conservativo
- Work - Energy
- Conceptual Energy and Springs
- Guided Discovery (Chinese/English) for Freshman University Physics: 3. Energy & Momentum
- Reactions and Rates 2: Intro to Kinetics (inquiry based)
- Phet Nuclear Fission Simulation Lab
- Wave Particle Duality
- Reflection and Transmission Interactive Lecture
- Models of Hydrogen Exploration
- How Strong is this Bond?
- Investigate the Energy of a Pendulum
- Introduction to Circuits Inquiry
- PHET energy forms and changes simulation worksheet to accompany simulation
- ORGANIC CHEMISTRY Chemical Reactions of Alkanes and Alkenes
- Video: Self-paced learning on Energy Transformation
- What Type of Light Bulb Should I buy for my Grandma?
- Acceleration
- Fraction Matcher Scaffolding Lesson
- NRG Sk8r
- Thermodynamics of Skating
- Energia skate pista batean
- tutorial energy-skate-park
- Conservation of Mechanical Energy
- PhET: Energy Forms Worksheet
- Force, Mass, Acceleration
- Orbits--effects of mass and distance
- Mass Spring Activity
- Exploring Nuclear Energy
- Radioactive Decay
- Radioactive Decay
- Isótopos y Masa Atómica: Actividad de Consulta Guiada
- Change Your Motion
- Gravity Force Lab for Physical Science
- Spring or Sprung?
- Circuit Creator
- Video: Self-paced learning on Energy Skate Park (GPE, KE and Work done)
- Video: Self-paced Investigation on Simple Harmonic Motion of a spring-mass system
- Density-introduction
- Work Energy on a Ramp
- Capacitor Lab: Inquiry into Capacitor Design
- Bohr Model of the Hydrogen Atom
- Isótopos y masa atómica
- 동위원소와 원자량 SIM 사용지침서
- Isotoopide meedialabori juhend
- Stable Isotopes
- Isotope Stability and Radioactivity
- Isótopos y Masas Atómicas
- Preguntas conceptuales sobre Isótopos
- İzotop stabilliyi
- Hooke's Law and Spring Constant with Energy: Regular Level
- skate park
- Build a Park
- Density Investigation
- States of Matter
- States of Matter PhET
- Fractions 3 Day Unit
- PhET Energy Forms and Changes Virtual Lab
- Energia cinetica y potencial, calculo
- Atividade Energia Mecânica gamificada
- lab course mass-spring system
- PhET Density Lab
- Hook's law
- Exploring Gravity
- Resonance-Introduction to Natural Frequency
- Balancing torques & Finding unknown masses
- Simple Pendulums - What Affects the Period?
- Exploring (proportional) Density
- The Atom; Discovery of the Atom
- CONSTRUYE UN ATOMO E ISOTOPOS, TABLA PERIODICA
- Spring Force, Spring Constant and Elastic Potential Energy
- linear momentum and collisions
- E/M Waves
- States of Matter
- PhET Sims Aligned to the Chemistry Curriculum
- Alignment of PhET sims with NGSS
- Ramp Activity 2: Calculating Net force on an incline (Inquiry Based)
- Ramp Activity 1: Using free body diagrams for motion on an incline (Inquiry Based)
- Capacitor_Lab_Basics _html_Remote_lab
- How does the mass and velocity of a satellite affect the orbit?
- PhET Collision Lab - Inelastic 1D
- How do PhET simulations fit in my middle school program?
- Application of The First Law of Thermodynamics
- PhET Collision Lab - Elastic 1D
- Simple Harmonic Motion (Pendulum & Spring)
- Newton's Second Law
- Preguntas de razonamiento para todas las simulaciones HTML5
- Mapping of PhET and IBDP Physics
- Hooke's Law, Spring Constant, and Energy HONORS
- Elastic potential energy, work and Hooke’s law.
- Energía térmica y cambios de estados
- Hojas de trabajo y preguntas sobre Energía
- Hooke's Law investigation including multi-spring systems and Energy
- Introduction to the Covalent Bond
- Charge and Energy Conservation in Circuits Inquiry
- Ramp: Forces and Motion Investigation
- Balancing Act Remote Lab
- Density Exploration
- Gas Properties Modular Homework Activity
- Student Guide for PhET - Balancing Act in html5
- Density Lab
- Calculer le poids d'un "grave"
- Gravity Force Simulation - Concept Questions
- La densitat amb el simulador PhET
- SECUNDARIA: Alineación PhET con programas de la SEP México (2011 y 2017)
- Turning Forces
- Conservation of Linear Momentum
- Movimiento Armonico Simple: El pendulo y el resorte (Simple Harmonic Motion:pendulum and spring
- Comparing Functions: Function Sleuthing to Find Rules
- Using the Atomic Interactions PhET Simulation: Concept Development for Understanding Energy Changes Associated with Bond Forming and Bond Breaking Events
- PREPARATORIA: Alineación de PhET con programas de la DGB México (2017)
- PHET: Masses and Springs 2021
- Introduction to Oscillations
- Resonance: Upper-division college
- Experiencia Educativa Principio Arquimedes, Fuerza Boyante y Densidad (Learning experience: Archimedes principle, Buoyant force & Density).
- Balancing Equations PhET
- Explore Balancing Chemical Equations
- Density Simulation Lab
- Measuring Density
- Sumo Simulator!
- Gravity Between Bodies
- Discharge Lamps and Electron Transitions
- Atomic Spectra and the Composition of Stars
- collision in one and two dimensions
- Conservation of Linear Momentum
- Atomic Interactions PhET Exploration - with Coulomb's Law application
- Pendulum Virtual Lab 2021
- NGSS Simulation Alignment/Correlation
- Molecules and Light-inquiry for high school
- Wave Interference- Waves (Sound and Light)
- MS and HS TEK to Sim Alignment
- Understanding Rates of Reactions
- States of Matter - Lab Simulation - student procedures and questions
- AP Physics Gravity Lab
- Virtual Density
- Build an Atom Game Remote Lab
- Im Skate Park: Umwandlung mechanischer Energie
- Balancing act 1
- Exploring Newtons' Second Law
- Atom Builder
- PhET Atom Simulator
- Newton's Second Law of Motion
- Balance Lab - Mystery Box
- Mr. T's Density Phet Lab
- Effusion
- Friction Investigation
- Fission: controlled vs. uncontrolled
- Newton's 1st & 2nd Laws
- Density
- Forces Simulator Activity
- Projectile Motion in Sports
- NGSS Eating and Exercise Activity HS-LS1-2
- SKATER y Conservación de la Energía
- Diagramme zeichnen
- Hooke's law
- Capacitor Design Remote Lab
- Energiebehoud in het skatepark klas 5
- Transformación de energía
- Energia cinetica e potenziale
- Temperature and changes
- أشكال الطاقة وتحولاتها
- Energías en el Skate Park
- W, Ek en Ez, Energie vergelijkingen laten leven.
- Atividade de transformação da energia
- Specific Heat Capacity
- Guided Inquiry
- Conservação de Energia
- Formas de energía y cambios energéticos
- Atividade sem matemática
- UNIDAD 1 S7 L12 Cambios de energía -Introducción
- Wet van behoud van Energie
- Conservação de Energia na Pista de Skate
- UNIDAD1 S7 L12 Cambios de energía-Sistemas
- Galileo's Skater Down an Inclined Plan
- SISTEMAS DE ENERGÍA
- UNIDAD2 S7 L2 ENERGÍA MECÁNICA-Energía mecánica
- Conservative and non-conservative forces
- La energía y sus transformaciones.
- Ranking Specific Heat Capacities
- Tipos de Energia
- Energie
- Energiebronnen
- Heat Capacity Land and Ocean
- energia mecanica
- 能量的转换学习单
- Conservación de jitomate… y energía.
- Laboratorio de energía con simulador PhET
- Acceleration Virtual Lab
- ACTIVIDAD SOBRE ENERGIA CINETICA Y POTENCIAL
- Energia motak eta aldaketak Jarduera
- Qüestionari simulador skate
- Perubahan Bentuk Energi
- Actividad en Genially con la pista de patinaje
- Las travesuras de la transferencia térmica
- Es PhET-Tacular: Descubriendo las Transformaciones de Energía
- Energía Mecánica y su conservación
- Conservación de la energía mecánica
- Transformaciones energéticas
- Energía en Acción: ¡Transforma y Sorpréndete !
- Heat or temperature?
- (BNCC) Calor ou temperatura?
- Temperatur və enerji
- Heat or temperature
- Introduction to Waves: Liquid Matter, Sound, and Light
- Microwaves Simulation Homework
- Hooke's Law
- Activity in Mechanics (Collisions)
- Balancing Chemical Equations HTML5
- Net Forces and Newton's Second Law
- forces and motion basics
- Factors Affecting The Frequency of A simple Harmonic Oscillator
- Build an Atom Lab!
- Graham's Law of Effusion
- Force and Motion
- Forces and Newton's Laws Review
- Investigating Springs
- Balancing Chemical Equations
- Newton's Law of Universal Gravitation
- Lab: PhET Build an Atom
- Compendio de Actividades e ILDs basadas en simulaciones PhET
- Exploring Equilibrium
- Basic Thermodynamics Inquiry
- Properties of waves
- Gravity and Planetary Orbits Lab
- Gas Relationships and Buoyancy
- Conservation of Linear Momentum
- Pendulum
- Masses and Springs
- Photoelectric effect
- My Solar System
- Ohm's Law
- Density
- Gravity, Orbits and Kepler's Laws
- Concentration PhET WebLab
- Chemistry Theater
- PHET INTERACTIVE SIMULATIONS COMO FERRAMENTA NO ENSINO DE TERMODINÂMICA
- The Photoelectric Effect and Work Functions
- The Covalent Bond Between Two Atoms
- Collisions
- Capacitors and Dielectrics
- Colission Lab colorado
- Hooke's Law
- Exothermic vs. Endothermic Reactions
- Finding Planck's Constant
- Build an Atom WebLab
- KE and PE using the Pendulum Lab
- Density Exploration
- Circuit Construction Kit
- Video: Self-paced Investigation on Hooke's Law Virtual Lab
- Projectile Motion - Lab Experiment
- Matching Fractions
- Discovering Newton's Second Law
- Newton's Second Law Investigation
- Masses and Springs
- Pendulum Lab
- Density-MS
- Friction on Incline
- Investigating Gravitational Interactions
- 大一物理引導式自我發現 (中文/英文): 能量與動量
- PRACTICAS DE SIMULACIONES
- Phase Changes Lab!
- Build an Ion Inquiry Activity
- ChemActivity: Phase Changes and Intermolecular Forces
- Capacitor and Dielectric 2
- Photoelectric PhET lab
- PhET Simulations Aligned for AP Physics C
- Online Assignment 4 Ms & Ss
- Student Guide for PhET - Gas Properties in html5
- Conservation of linear momentum
- Introduction to Forces in 1-D
- Second Law Inquiry PhET Forces and Motion
- PhET Forces Lab
- Hooke's Law (Springs)
- PhET Greenhouse Effect Simulations
- Alineación simulaciones PhET con el Currículo Ecuatoriano - Química - Bachillerato
- Black Body Radiation: Seeking Patterns in Data Sets
- Capacitors
- Mecânica (Atividades) nos OA's do PhET
- Conservation of Linear Momentum
- Exploring Light as a Particle
- Video: Self-paced learning on Capacitor
- Gravitational Force and Orbits
- PhET Projectiles Simulation Lab
- Projectile Motion Worksheet
- Proving Newton's Second Law
- Horizontal Launch Investigation
- Reactants, Leftovers and Products
- Projectile Motion Scientific Enquiry
- Guided Discovery: BMI, BMR, Calories in/out
- Charges and Fields Exploration
- Tricky Dimensions – a Spin-off of a Sim
- Gas Properties Simulation
- The capacitance of a parallel-plate capacitor, effects of dielectric in a capacitor
- Collision exp
- Conservation of Momentum
- Modeling Paradigm Lab- 2nd Law
- Cavendish Lab
- Playing with atoms
- Projectile Motion
- Trip to Mars
- Kirchhoff's Law
- Capacitor Lab: Basics: Inquiry into Capacitor Design
- PRIMARIA: Alineación con programas de la SEP México (2011 y 2017)
- Electric Field Hockey Post-Game Analysis
- NGSS Alignment Doc for Middle School targeted PhET Sims
- Intro to Waves I: Basics of waves in liquids
- Photoelectric Effect
- Spring Oscillators Activity