This resource is a complete lesson that covers Medical Uses of Ultrasound for the OCR A Level Physics A course. However, it is useful for other exam boards too. This lesson teaches the following content: -ultrasound; longitudinal wave with frequency greater than 20 kHz -acoustic impedance of a medium; Z =  ρc -reflection of ultrasound at a boundary; Ir / I₀ =(Z₂ - Z₁)² / (Z₂ + Z₁)² -piezoelectric effect; ultrasound transducer as a device that emits and receives ultrasound -advantages and disadvantages of ultrasound in medical scans -ultrasound A-scan and B-scan -impedance (acoustic) matching; special gel used in ultrasound scanning -Doppler effect in ultrasound; speed of blood in the patient Δf/f = 2vcosθ/c for determining the speed v of blood. This lesson includes: -A full presentation including 3 example questions with worked solutions. -A worksheet with model answers, perfect to set as homework. -Clear visual aids and diagrams to simplify complex concepts. -Editable PowerPoint and Word document for easy customisation. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

This resource is a complete lesson that covers Simple Harmonic Motion for the OCR A Level Physics A course. However, it is useful for other exam boards too. This lesson teaches the following content: -displacement, amplitude, period, frequency, angular frequency and phase difference -simple harmonic motion; defining equation a =-ω²x -techniques and procedures used to determine the period/frequency of simple harmonic oscillations -solutions to the equation a = -ω²x e.g. x = Acosωt or x = Asinωt -velocity v = ± ω √ (A² - x²) hence vmax = ωA -the period of a simple harmonic oscillator is independent of its amplitude (isochronous oscillator) -graphical methods to investigate simple harmonic motion (mass of spring system). -interchange between kinetic and potential energy during simple harmonic motion -energy-displacement graphs for a simple harmonic oscillator This lesson includes: -A full presentation including 2 example questions with worked solutions. -A worksheet with model answers, perfect to set as homework. -Clear visual aids and diagrams to simplify complex concepts. -Editable PowerPoint and Word document for easy customisation. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

This resource is a complete lesson that covers Circuits, Current & Potential Difference for the OCR A Level Physics A course. However, it is useful for other exam boards too. This lesson teaches the following content: -circuit symbols -drawing circuit diagrams -electric current as rate of flow of charge; I = Q / t -the coulomb as the unit of charge -the elementary charge e equals 1.6 × 10–19 C -net charge on a particle or an object is quantised and a multiple of e -current as the movement of electrons in metals and movement of ions in electrolytes -conventional current and electron flow -mean drift velocity of charge carriers -I = Anev, where n is the number density of charge carriers -distinction between conductors, semiconductors and insulators in terms of n. -potential difference (p.d.); the unit volt -energy transferred: W = VQ -energy transfer eV = 1/2 mv2 for electrons and other charged particles. This lesson includes: -A full presentation including 5 example questions with worked solutions. -A worksheet with model answers, perfect to set as homework. -Clear visual aids and diagrams to simplify complex concepts. -Editable PowerPoint and Word document for easy customisation. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

This resource is a complete lesson that covers Foundations of Physics for the OCR A Level Physics A course. However, it is useful for other exam boards too. This lesson teaches the following content: -physical quantities have a numerical value and a unit -making estimates of physical quantities listed in this specification. -Système Internationale (S.I.) base quantities and their units – mass (kg), length (m), time (s), current (A), temperature (K), amount of substance (mol) -derived units of S.I. base units -checking the homogeneity of physical equations using S.I. base units -prefixes and their symbols to indicate decimal submultiples or multiples of units – pico ( p ), nano (n), micro (μ), milli (m), centi ( c ), deci (d), kilo (k), mega (M), giga (G), tera (T) -systematic errors (including zero errors) and random errors in measurements -precision and accuracy -absolute and percentage uncertainties when data are combined by addition, subtraction, multiplication, division and raising to powers -graphical treatment of errors and uncertainties; line of best fit; worst line; absolute and percentage uncertainties; percentage difference -scalar and vector quantities This lesson includes: -A full presentation including 9 example questions with worked solutions. -A worksheet with model answers, perfect to set as homework. -Clear visual aids and diagrams to simplify complex concepts. -Editable PowerPoint and Word document for easy customisation. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.