OCR AS Physics: Internal Resistance is a part of the Module 4: Electrons, Waves, and Photons. PowerPoint with worked examples and homework. Find lost volts and terminal potential difference from a source of emf Calculate internal resistance of a cell Calculate internal resistance of a cell with a graph Calculate EMF of a source

This lesson presentations covers OCR Gateway Physics 9-1 P4.2.5 Transformers. Examples of transformers in everyday life Structure of a transformer Step-up and Step-down transformers Transformer equation and rearranging equations. Worked Examples and Student problems with worked solutions. Explanation for use of step-up transformers - efficiency

OCR AS Physics: Analysing Circuits is a part of the Module 4: Electrons, Waves, and Photons. PowerPoint with worked examples and homework. Kirchhoff’s Laws for potential difference Thermistors and LDRs in sensing circuits Ratio of resistances and ratio of potential differences

This presentation covers OCR Gateway Physics 9-1 P7.2.3 Electrical Heating Transfers. All presentations come with student activities and worked solutions. Walls and Insulation Thermal energy dissipation Reducing thermal energy dissipation with lubrication and insulation Heating substances and state changes Work done = Power x Time Change in thermal energy = Mass x Specific Heat Capacity x Change in temperature Thermal energy for state change = Mass x Specific latent heat

This presentation covers OCR Gateway Physics 9-1 P7.2.2 Electrical Energy Transfers. All presentations come with student activities and worked solutions. Energy stores Energy transfers Current heats wires Wasted energy in motors and heating elements Specific heat capacity and electrical energy Thermal energy = Mass x Specific Heat Capacity x Change in Temperature Energy = Charge x Potential Difference

This presentation covers OCR Gateway Physics 9-1 P7.2.5 Efficiency. All presentations come with student activities and worked solutions. Efficiency Ratings Improving efficiency with insulation and lubrication Maximum efficiency Efficiency equation Sankey diagrams

OCR AS Chemistry: The Chemistry of Haloalkanes This PowerPoint is a whole lessons included with student activities, animated answers, homework questions with answers provided. This lesson covers: Naming Haloalkanes Classifying Haloalkanes (primary, secondary, tertiary) Electronegativity Reaction mechanism for hydrolysis Rates of reactions for hydrolysis Reaction conditions for hydrolysis

This presentation covers OCR Gateway Physics 9-1 P8.1.2 Reaction Time and Thinking Distance. All presentations come with student activities and worked solutions. Reaction time definition Factors that increase reaction time Simple reaction time experiment Thinking distance Rearranging equations Speed equation (Final velocity)2 – (Initial velocity)2 = 2 x Acceleration x Distance v2 – u2 = 2 a s

OCR AS Chemistry: 14.2 Reactions of Alcohols This PowerPoint is a whole lessons included with student activities, animated answers, homework questions with answers provided. This lesson covers: Combustion of alcohols Reflux condition for reactions Primary alcohol to aldehydes Primary alcohols to carboxylic acids Secondary alcohols to ketones Dehydration of alcohols Substitution reactions for alcohols

OCR AS Physics: LDR is a part of the Module 4: Electrons, Waves, and Photons. PowerPoint with worked examples and homework. Materials and uses of LDRs Creating an experiment to understand LDRs LDRs relationship with light intensity

This presentation covers OCR Gateway Physics 9-1 P4.2.1 Forces, Current and Fleming’s Left Hand Rule. This presentation includes: Interacting Magnetic Field Lines Increasing Magnitude of the force on a current carrying conductor Applying Fleming’s Left Hand Rule

This presentation covers OCR Gateway Physics 9-1 P2.2.4 Newton’s Second Law in Mathematical Form Proportionalities Rearranging Equations Student’s problems with answers Exam style questions with solutions

This presentation covers OCR Gateway Physics 9-1 P2.2.5 Presentation comes with worked examples, student questions and answers. Newton’s first Law Terminal velocity Free body diagrams Plotting data Determining acceleration for a velocity-time graph Determining distance traveled for a velocity-time graph

This presentation covers OCR Gateway Physics 9-1 P2.2.7 Work done equation Rearranging work done equation Questions and answers for work done Power equation and definition Rearranging power equation Different units for work done: J, N m, kg m^2/s^2

These two lesson presentations covers the OCR Gateway Physics 9-1 P2.3.1 material. • Number of forces needed to deform an object • Elastic and Plastic definitions • Hooke’s Law • Rearranging equations • Determining the gradient • Determining the spring constant • Experimental procedure • Exam style questions with solutions

OCR AS Physics A: The Photon Model is a part of the Module 4: Electrons, Waves, and Photons. Full lesson PowerPoint with worked examples and homework with complete worked answers. Energy of a single photon Converting from electron-volts to Joules. Frequency of the electromagnetic spectrum Determining Plank’s constant with LEDs Threshold potential difference difference

OCR AS level Physics: More Vectors is a part of the Module 2: Foundations of Physics Presentation come with worked examples, solutions and homeworks.

OCR AS level Physics: Scalar and Vector Quantities is a part of the Module 2: Foundations of Physics Full lesson PowerPoint with worked examples and homework with complete worked answers. Definition of scalars and vectors Adding quantities with the same units Determining if a quantity is a vector or scalar from an equation Comparing displacement and distance

OCR AS level Physics: Springs and Hooke’s Law is a part of the Module 3: Materials. Presentation come with worked examples, solutions and homeworks.

OCR AS level Physics: The Photoelectric Effect is a part of the Module 4: Electrons, Waves, and Photons. Full lesson PowerPoint with worked examples and homework with complete worked answers. Threshold frequency Producing photoelectrons Kinetic energy of photoelectrons Linking frequency and wavelength The electromagnetic spectrum, frequency and energy.