Study guides, Class notes & Summaries

Complete Solutions Manual for Principles of Physics, Extended, International Adaptation, 12th Edition by David Halliday, Robert Resnick, Jearl Walker ; ISBN13: 9781119820628. (Full Chapters included Chapter 1 to 44)....1. Measurement. 2. Motion Along a Straight Line. 3. Vectors. 4. Motion in Two and Three Dimensions. 5. Force and Motion--I. 6. Force and Motion--II. 7. Kinetic Energy and Work. 8. Potential Energy and Conservation of Energy. 9. Center of Mass and Linear Momentum. 10. Rota...

Complete Solutions Manual for Thermal Radiation Heat Transfer, 7th Edition by John R. Howell, M. Pinar Mengüc, Kyle Daun, Robert Siegel ; ISBN13: 9780367347079. (Full Chapters included Chapter 1 to 19).... 1. Introduction to Radiative Transfer. 2. Radiative Properties at Interfaces. 3. Radiative Properties of Opaque Materials. 4. Configuration Factors for Diffuse Surfaces with Uniform Radiosity. 5. Radiation Exchange in Enclosures Composed of Black and/or Diffuse–Gray Surfaces. 6. Exchange o...

A-level PHYSICS 7408/1 Paper 1 Mark scheme June 2023

Physics Questions & Answers A 0.150 kg baseball is thrown upward with an initial speed of 20 m/s. a. What is the force on the ball when it reaches half of its maximum height? b. What is the force on the ball when it reaches its peak? - CORRECT ANSWER- a. -1.47 N b. -1.47 N A beach ball is left in the bed of a pick up truck. Describe what happens to the ball when the truck accelerates forward. - CORRECT ANSWER- The ball moves toward the back of the truck because inertia keeps it in place r...

Dynamo A device that converts mechanical power into electrical power with a direct current. Eddy Currents Small closed loops of current within a conductor or magnet. In a transformer these currents act against the magnetic flux that generates a current in the secondary coil, making the transformer less efficient and heating the core. Electrical Conductance The inverse of resistance. A measure of how well an object conducts electricity. Electromagnetic Induction When a current carrying...

What is the magnitude of the force experienced by a current-carrying wire placed in a magnetic field? Force = Magnetic Flux Density x Current x Length F = BIL State the safety precautions that should be taken when working with wires carrying high currents. Wires carrying high currents will get very hot, so you must avoid touching the wire throughout the experiment. The power supply should be turned off when not required in order to reduce the heating effect. What rule can be used to det...

What is a source’s internal resistance? A source’s internal resistance is the resistance of the materials inside the source. It is equal to the lost volts per unit current in the source. What is the emf of a power source? A power supply’s emf is the work done by the source per unit charge. It is equal to the potential difference across the source when no current flows. State the equation used to calculate a battery’s emf from its current, load resistance and internal resistance...

How can you calculate the total resistance of a combination of resistors in series? The total resistance equals the sum of the individual resistances. R = R₁ + R₂...+ Rₙ How can you calculate the total resistance of a parallel combination of resistors? The total resistance equals the inverse of the sum of the inverses of the individual resistances. 1/R = 1/R₁ + 1/R₂...+ 1/Rₙ What device can be used to check the resistance of a component? An Ohmmeter or multimeter can be used t...

What is an uncertainty? An uncertainty in a measurement is anything that may cause the value to differ from the true value. What is the resolution of a measuring instrument? The resolution of an instrument is the smallest increment that produces a noticeable change in the value. How do you combine uncertainties when adding values? Add the absolute uncertainties. How do you combine uncertainties when subtracting values? Add the absolute uncertainties. How do you combine uncertainties wh...

Absolute Uncertainty The interval that a value is said to lie within, with a given level of confidence. Accuracy A measure of how close a measurement is to the true value. Analogue Apparatus Measuring apparatus such as rulers, beakers and thermometers that rely on the experimenter reading off a scale to determine the measurement. Anomalies Data points that don’t fit the pattern of the data. You should determine why an anomalous result has occurred before removing it. Repeat readings...