Physics General Relativity Study guides, Class notes & Summaries

2 © OCR 2023 F F 2 Section A You should spend a maximum of 30 minutes on this section. Write your answer to each question in the box provided. 1 Which row contains only scalar quantities? A Absolute temperature, displacement, moment B Acceleration, force, momentum C Gravitational potential, kinetic energy, mass D Kinetic energy, mass, momentum Your answer [1] 2 Forces are applied to a circular shaft of diameter d. Which diagram shows a torque of a couple with magnitude Fd? F 2F ...

2 © OCR 2023 F F 2 Section A You should spend a maximum of 30 minutes on this section. Write your answer to each question in the box provided. 1 Which row contains only scalar quantities? A Absolute temperature, displacement, moment B Acceleration, force, momentum C Gravitational potential, kinetic energy, mass D Kinetic energy, mass, momentum Your answer [1] 2 Forces are applied to a circular shaft of diameter d. Which diagram shows a torque of a couple with magnitude Fd? F 2F ...

The brakes of a car of mass 1200 kg are being tested on a track. The driver sees a hazard and applies the brakes. The graph shows the variation of the velocity v of the car with time t from when the driver sees the hazard to when the car stops. 20 v /m s –1 15 10 5 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 t/ s (a) (i) Calculate the acceleration a of the car while the brakes are applied. a = ................................................. m s –2 [1] (ii) Calculate the average brak...

2 © OCR 2023 Section A You should spend a maximum of 25 minutes on this section. Write your answer to each question in the box provided. 1 What is a typical value, in cm, for the wavelength of microwave radiation? A 0.0003 B 0.03 C 3 D 300 Your answer [1] 2 The diagrams show four systems of forces with three forces acting at a single point. The forces are in the same plane. The diagrams are drawn to scale. Which system could be in equilibrium? A B C D Your answer [1] 3 © O...

Answer all questions in this section. outside the box 0 1 Figure 1 shows apparatus used to measure the speed of sound in a steel rod. Figure 1 The steel rod is suspended from a beam using rubber bands. When the hammer is in contact with the end L of the steel rod, a circuit is completed and the signal generator is connected to the oscilloscope. Figure 2 shows the waveform then displayed on the oscilloscope. If you need a professional to complete your college homework at a small fee, the...

Lent Assessment Question & Answers 2024 3 Capacitor uses - ANSWER: Timing, smoothing out rectified curent, eliminating switch bounce 103 ceramic capacitor value - ANSWER: 10nF 104 ceramic capactior value - ANSWER: 100nF Calculate RT in parallel. - ANSWER: 1/Rt = 1/R1 + 1/R2 or Rt = (R1 x R2) / (R1 + R2) Calculate RT in series. - ANSWER: Rt = R1 + R2 Difference between size in electrolytic and ceramic - ANSWER: Electrolytic larger and polarised, ceramic smaller and on polarised For a pote...

vectors addition and subtraction

Science - ANSWER-The use of knowledge in a organized and classified manner. Natural Science - ANSWER-The study of the universe and its contents. Velocity - ANSWER-Speed Rate of change of position of an object over time Inertia - ANSWER-Property of matter that resists its change in motion. Tendency of a resting body to remain at rest and the tendency of a body moving at a constant speed in a straight line to continue its states of motion. Force - ANSWER-Push or pull of an object. N...

Displacement - ANSWER-How much an object's position has changed (^d->) (vector) Distance - ANSWER-The length of a journey an object takes (d) (scalar) Position - ANSWER-Describes the location of an object (d->) (vector) Ex: 3 km east from school Slope - ANSWER-rise/run on a graph Average Velocity - ANSWER-Rate of change in a position for a time interval Acceleration - ANSWER-The rate an objects velocity changes in a given period of time (vector) Vectors - ANSWER-Qualiti...

Photon - ANSWER-A discrete unit or package of light energy Photoelectric Effect - ANSWER-The emission of electrons from a metal when electromagnetic radiation of high enough frequency falls on the surface Threshold Frequency (f₀) - ANSWER-The minimum frequency of light needed to eject electrons from a metal surface Work Function (Φ) - ANSWER-The minimum energy needed to eject electrons from the surface of a metal Millikan's Stopping Potential Experiment - ANSWER-An experiment uti...