Saturday, January 21, 2017
Thursday, January 12, 2017
The movement of the Sun and the Earth
Look at the sky , and you will notice that the Sun rises from the east and sets from the west , The sunrise and the sunset do not occur due to the rotation of the Sun , but it occurs due to the rotation of the Earth around itself ( its axis ) .
This phenomenon is called the apparent movement of the Sun , where it takes different apparent orbit from the east to the west , The movement of the shadow of the fixed bodies is due to the apparent movement of the Sun .
The rotation of the Earth
The Earth is one of the planets , where we can live because it contains the air , the food and the water , The Earth consists of two hemispheres ( northern hemisphere and southern hemisphere ) , The Earth rotates around itself and rotates around the Sun .
Wednesday, January 11, 2017
Would a brick or feather fall faster, Physics
Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.
Tuesday, January 10, 2017
Learn about Planet Earth, Science for Kids
Learn about Planet Earth
The earth is the third planet from the Sun in our solar system.
It is the fifth largest of the eight planets in our solar system and the only planet that supports life. The earth is home to millions of species including us…humans! Scientists believe that the earth is the only planet to have life on it. The earth is about 12,756 Km or 7,926 miles in diameter.
Monday, January 9, 2017
Gravity for astronauts in orbit, Centripetal force and gravitation, Physics
Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.
Sunday, January 8, 2017
Isaac Newton
Sir Isaac Newton PRS (/ˈnjuːtən/;[6] 25 December 1642 – 20 March 1726/27[1]) was an English mathematician, astronomer, and physicist (described in his own day as a "natural philosopher") who is widely recognised as one of the most influential scientists of all time and a key figure in the scientific revolution. His book Philosophiæ Naturalis Principia Mathematica ("Mathematical Principles of Natural Philosophy"), first published in 1687, laid the foundations of classical mechanics. Newton also made seminal contributions to optics, and he shares credit with Gottfried Wilhelm Leibniz for developing the infinitesimal calculus.
Saturday, January 7, 2017
Solving for time, Onedimensional motion, Physics
Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.
Friday, January 6, 2017
Intro to vectors & scalars, Onedimensional motion, Physics
Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.
Thursday, January 5, 2017
Acceleration, Onedimensional motion, Physics
Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.
Nhãn:
General Physics,
Motion,
Physics basic,
Video physics
Distance (position) to Velocity Time Graph Physics Help
Distance (position) to Velocity Time Graph Physics Help
At what speed does the Earth move around the Sun
Short version: Earth's average orbital speed is about 30 kilometers per second. In other units, that's about 19 miles per second, or 67,000 miles per hour, or 110,000 kilometers per hour (110 million meters per hour).
In more detail:
Wednesday, January 4, 2017
Displacement from time and velocity example, Onedimensional motion, Physics
Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.
Proton Beam Defocusing as a Result of SelfModulation in Plasma
The AWAKE experiment will use a \SI{400}{GeV/c} proton beam with a longitudinal bunch length of σz=12cm to create and sustain GV/m plasma wakefields over 10 meters . A 12 cm long bunch can only drive strong wakefields in a plasma with npe=7×1014electrons/cm3 after the selfmodulation instability (SMI) developed and microbunches formed, spaced at the plasma wavelength. The fields present during SMI focus and defocus the protons in the transverse plane \cite{SMI}. We show that by inserting two imaging screens downstream the plasma, we can measure the maximum defocusing angle of the defocused protons for plasma densities above npe=5×1014electrons/cm−3. Measuring maximum defocusing angles around 1 mrad indirectly proves that SMI developed successfully and that GV/m plasma wakefields were created. In this paper we present numerical studies on how and when the wakefields defocus protons in plasma, the expected measurement results of the two screen diagnostics and the physics we can deduce from it.
Position vs. time graphs, Onedimensional motion, Physics
David explains how to read a position vs. time graph. He then explains how to use the graph to determine the following quantities: displacement, distance, average velocity, average speed, instantaneous velocity, and instantaneous speed.
Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.
Tuesday, January 3, 2017
Calculating average velocity or speed, Onedimensional motion Physics
Example of calculating speed and velocity.
Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.
Physical Quantities, Symbols and Units
Table 1 below indicates the physical quantities required for numerical calculations that are included in the Access 3 Physics units and the Intermediate 1 Physics units and course together with the SI unit of the quantity.
Table 1
Physical Quantity

Unit

distance

metre

time

second

speed, average speed

metre per
second

mass

kilogram

weight

newton

current

ampere

voltage

volt

resistance

ohm

power

watt

input voltage

volt

output voltage

volt

voltage gain



Ebook OpenStax PhysicsStudent Solution Manual
Contents Ebook OpenStax PhysicsStudent Solution Manual
Contents
1.3 Accuracy, Precision, and Significant Figures
2.3 Time, Velocity, and Speed
2.5 Motion Equations for Constant Acceleration in One Dimension
2.7 Falling Objects
2.8 Graphical Analysis of OneDimensional Motion
3.3 Vector Addition and Subtraction: Analytical Methods
3.4 Projectile Motion
3.5 Addition of Velocities
4.6 ProblemSolving Strategies
4.7 Further Applications of Newton’s Laws of Motion
5.3 Elasticity: Stress and Strain
6.2 Centripetal Acceleration
6.3 Centripetal Force
6.5 Newton’s Universal Law of Gravitation
6.6 Satellites and Kepler’s Laws: An Argument for Simplicity
7.2 Kinetic Energy and the WorkEnergy Theorem
7.3 Gravitational Potential Energy
7.7 Power
7.8 Work, Energy, and Power in Humans
8.2 Impulse
8.3 Conservation of Momentum
8.5 Inelastic Collisions in One Dimension
8.6 Collisions of Point Masses in Two Dimensions
8.7 Introduction to Rocket Propulsion
9.3 Stability
9.6 Forces and Torques in Muscles and Joints
10.3 Dynamics of Rotational Motion: Rotational Inertia
10.4 Rotational Kinetic Energy: Work and Energy Revisited
10.5 Angular Momentum and Its Conservation
10.6 Collisions of Extended Bodies in Two Dimensions
11.3 Pressure
11.4 Variation of Pressure with Depth in a Fluid
11.5 Pascal’s Principle
11.7 Archimedes’ Principle
11.8 Cohesion and Adhesion in Liquids: Surface Tension and Capillary Action
11.9 Pressures in the Body
12.2 Bernoulli’s Equation
12.3 The Most General Applications of Bernoulli’s Equation
12.4 Viscosity and Laminar Flow; Poiseuille’s Law
12.5 The Onset of Turbulence
12.7 Molecular Transport Phenomena: Diffusion, Osmosis, and Related Processes
13.2 Thermal Expansion of Solids and Liquids
13.3 The Ideal Gas Law
13.4 Kinetic Theory: Atomic and Molecular Explanation of Pressure and Temperature
13.6 Humidity, Evaporation, and Boiling
14.3 Phase Change and Latent Heat
14.5 Conduction
14.6 Convection
14.7 Radiation
15.2 The First Law of Thermodynamics and Some Simple Processes
15.3 Introduction to the Second Law of Thermodynamics: Heat Engines and Their Efficiency
15.5 Applications of Thermodynamics: Heat Pumps and Refrigerators
15.6 Entropy and the Second Law of Thermodynamics: Disorder and the Unavailability of Energy
15.7 Statistical Interpretation of Entropy and the Second Law of Thermodynamics: The Underlying Explanation
16.2 Period and Frequency in Oscillations
16.3 Simple Harmonic Motion: A Special Periodic Motion
16.4 The Simple Pendulum
16.5 Energy and the Simple Harmonic Oscillator
16.6 Uniform Circular Motion and Simple Harmonic Motion
16.8 Forced Oscillations and Resonance
16.9 Waves
16.10 Superposition and Interference
16.11 Energy in Waves: Intensity
17.3 Sound Intensity and Sound Level
17.4 Doppler Effect and Sonic Booms
17.5 Sound Interference and Resonance: Standing Waves in Air Columns
17.6 Hearing
17.7 Ultrasound
18.2 Conductors and Insulators
18.3 Coulomb’s Law
18.4 Electric Field: COncept of a Field Revisited
18.5 Electric Field Lines: Multiple Charges
18.7 Conductors and Electric Fields in Static Equilibrium
18.8 Applications of Electrostatics
19.2 Electric Potential in a Uniform Electric Field
19.3 Electric Potential Due to a Point Charge
19.4 Equipotential Lines
19.5 Capacitors and Dieletrics
19.6 Capacitors in Series and Parallel
19.7 Energy Stored in Capacitors
20.2 Ohm’s Law: Resistance and Simple Circuits
20.3 Resistance and Resistivity
20.4 Electric Power and Energy
20.5 Alternating Current versus Direct Current
20.6 Electric Hazards and the Human Body
21.2 Electromotive Force: Terminal Voltage
21.3 Kirchhoff’s Rules
21.4 DC Voltmeters and Ammeters
21.5 Null Measurements
21.6 DC Circuits Containing Resistors and Capacitors
22.5 Force on a Moving Charge in a Magnetic Field: Examples and Applications
22.6 The Hall Effect
22.7 Magnetic Force on a CurrentCarrying Conductor
22.8 Torque on a Current Loop: Motors and Meters
22.10 Magnetic Force between Two Parallel Conductors
22.11 More Applications of Magnetism
23.2 Faraday’s Law of Induction: Lenz’s Law
23.3 Motional Emf
23.4 Eddy Currents and Magnetic Damping
23.5 Electric Generators
23.6 Back Emf
23.7 Transformers
23.9 Inductance
23.10 RL Circuits
23.11 Reactance, Inductive and Capacitive
23.12 RLC Series AC Circuits
24.3 The Electromagnetic Spectrum
24.4 Energy in Electromagnetic Waves
25.3 The Law of Refraction
25.4 Total Internal Reflection
25.5 Dispersion: The Rainbow and Prisms
25.6 Image Formation by Lenses
25.7 Image Formation by Mirrors
26.2 Vision Correction
26.5 Telescopes
26.6 Aberrations
27.3 Young’s Double Slit Experiment
27.4 Multiple Slit Diffraction
27.5 Single Slit Diffraction
27.6 Limits of Resolution: The Rayleigh Criterion
27.7 Thin Film Interference
27.8 Polarization
28.3 Length Contraction
28.4 Relativistic Addition of Velocities
28.5 Relativistic Momentum
28.6 Relativistic Energy
29.2 The Photoelectric Effect
29.3 Photon Energies and the Electromagnetic Spectrum
29.4 Photon Momentum
29.6 The Wave Nature of Matter
29.7 Probability: The Heisenberg Uncertainty Principle
29.8 The ParticleWave Duality Reviewed
30.3 Bohr’s Theory of the Hydrogen Atom
30.4 X Rays: Atomic Origins and Applications
30.5 Applications of Atomic Excitations and DeExcitations
30.8 Quantum Numbers and Rules
30.9 The Pauli Exclusion Principle
31.3 Substructure of the Nucleus
31.4 Nuclear Decay and Conservation Laws
31.5 HalfLife and Activity
31.6 Binding Energy
31.7 Tunneling
32.2 Biological Effects of Ionizing Radiation
32.3 Therapeutic Uses of Ionizing Radiation
32.5 Fusion
32.6 Fission
32.7 Nuclear Weapons
33.3 Accelerators Create Matter from Energy
33.4 Particles, Patterns, and Conservation Laws
33.5 Quarks: Is That All There Is?
33.6 GUTS: The Unification of Forces
Contents
Preface
Chapter 1: Introduction: The Nature of Science and Physics
1.2 Physical Quantities and Units1.3 Accuracy, Precision, and Significant Figures
Chapter 2: Kinematics
2.1 Displacement2.3 Time, Velocity, and Speed
2.5 Motion Equations for Constant Acceleration in One Dimension
2.7 Falling Objects
2.8 Graphical Analysis of OneDimensional Motion
Chapter 3: TwoDimensional Kinematics
3.2 Vector Addition and Subtraction: Graphical Methods3.3 Vector Addition and Subtraction: Analytical Methods
3.4 Projectile Motion
3.5 Addition of Velocities
Chapter 4: Dynamics: Force and Newton’s Laws of Motion
4.3 Newton’s Second Law of Motion: Concept of a System4.6 ProblemSolving Strategies
4.7 Further Applications of Newton’s Laws of Motion
Chapter 5: Further Application of Newton’s Laws: Friction, Drag, and Elasticity
5.1 Friction5.3 Elasticity: Stress and Strain
Chapter 6: Uniform Circular Motion and Gravitation
6.1 Rotation Angle and Angular Velocity6.2 Centripetal Acceleration
6.3 Centripetal Force
6.5 Newton’s Universal Law of Gravitation
6.6 Satellites and Kepler’s Laws: An Argument for Simplicity
Chapter 7: Work, Energy, and Energy Resources
7.1 Work: The Scientific Definition7.2 Kinetic Energy and the WorkEnergy Theorem
7.3 Gravitational Potential Energy
7.7 Power
7.8 Work, Energy, and Power in Humans
Chapter 8: Linear Momentum and Collisions
8.1 Linear Momentum and Force8.2 Impulse
8.3 Conservation of Momentum
8.5 Inelastic Collisions in One Dimension
8.6 Collisions of Point Masses in Two Dimensions
8.7 Introduction to Rocket Propulsion
Chapter 9: Statics and Torque
9.2 The Second Condition for Equilibrium9.3 Stability
9.6 Forces and Torques in Muscles and Joints
Chapter 10: Rotational Motion and Angular Momentum
10.1 Angular Acceleration10.3 Dynamics of Rotational Motion: Rotational Inertia
10.4 Rotational Kinetic Energy: Work and Energy Revisited
10.5 Angular Momentum and Its Conservation
10.6 Collisions of Extended Bodies in Two Dimensions
Chapter 11: Fluid Statics
11.2 Density11.3 Pressure
11.4 Variation of Pressure with Depth in a Fluid
11.5 Pascal’s Principle
11.7 Archimedes’ Principle
11.8 Cohesion and Adhesion in Liquids: Surface Tension and Capillary Action
11.9 Pressures in the Body
Chapter 12: Fluid Dynamics and Its Biological and Medical Applications
12.1 Flow Rate and Its Relation to Velocity12.2 Bernoulli’s Equation
12.3 The Most General Applications of Bernoulli’s Equation
12.4 Viscosity and Laminar Flow; Poiseuille’s Law
12.5 The Onset of Turbulence
12.7 Molecular Transport Phenomena: Diffusion, Osmosis, and Related Processes
Chapter 13: Temperature, Kinetic Theory, and the Gas Laws
13.1 Temperature13.2 Thermal Expansion of Solids and Liquids
13.3 The Ideal Gas Law
13.4 Kinetic Theory: Atomic and Molecular Explanation of Pressure and Temperature
13.6 Humidity, Evaporation, and Boiling
Chapter 14: Heat and Heat Transfer Methods
14.2 Temperature Change and Heat Capacity14.3 Phase Change and Latent Heat
14.5 Conduction
14.6 Convection
14.7 Radiation
Chapter 15: Thermodynamics
15.1 The First Law of Thermodynamics15.2 The First Law of Thermodynamics and Some Simple Processes
15.3 Introduction to the Second Law of Thermodynamics: Heat Engines and Their Efficiency
15.5 Applications of Thermodynamics: Heat Pumps and Refrigerators
15.6 Entropy and the Second Law of Thermodynamics: Disorder and the Unavailability of Energy
15.7 Statistical Interpretation of Entropy and the Second Law of Thermodynamics: The Underlying Explanation
Chapter 16: Oscillatory Motion and Waves
16.1 Hooke’s Law: Stress and Strain Revisited16.2 Period and Frequency in Oscillations
16.3 Simple Harmonic Motion: A Special Periodic Motion
16.4 The Simple Pendulum
16.5 Energy and the Simple Harmonic Oscillator
16.6 Uniform Circular Motion and Simple Harmonic Motion
16.8 Forced Oscillations and Resonance
16.9 Waves
16.10 Superposition and Interference
16.11 Energy in Waves: Intensity
Chapter 17: Physics of Hearing
17.2 Speed of Sound, Frequency, and Wavelength17.3 Sound Intensity and Sound Level
17.4 Doppler Effect and Sonic Booms
17.5 Sound Interference and Resonance: Standing Waves in Air Columns
17.6 Hearing
17.7 Ultrasound
Chapter 18: Electric Charge and Electric Field
18.1 Static Electricity and Charge: Conservation of Charge18.2 Conductors and Insulators
18.3 Coulomb’s Law
18.4 Electric Field: COncept of a Field Revisited
18.5 Electric Field Lines: Multiple Charges
18.7 Conductors and Electric Fields in Static Equilibrium
18.8 Applications of Electrostatics
Chapter 19: Electric Potential and Electric Field
19.1 Electric Potential Energy: Potential Difference19.2 Electric Potential in a Uniform Electric Field
19.3 Electric Potential Due to a Point Charge
19.4 Equipotential Lines
19.5 Capacitors and Dieletrics
19.6 Capacitors in Series and Parallel
19.7 Energy Stored in Capacitors
Chapter 20: Electric Current, Resistance, and Ohm’s Law
20.1 Current20.2 Ohm’s Law: Resistance and Simple Circuits
20.3 Resistance and Resistivity
20.4 Electric Power and Energy
20.5 Alternating Current versus Direct Current
20.6 Electric Hazards and the Human Body
Chapter 21: Circuits, Bioelectricity, and DC Instruments
21.1 Resistors in Series and Parallel21.2 Electromotive Force: Terminal Voltage
21.3 Kirchhoff’s Rules
21.4 DC Voltmeters and Ammeters
21.5 Null Measurements
21.6 DC Circuits Containing Resistors and Capacitors
Chapter 22: Magnetism
22.4 Magnetic Field Strength: Force on a Moving Charge in a Magnetic Field22.5 Force on a Moving Charge in a Magnetic Field: Examples and Applications
22.6 The Hall Effect
22.7 Magnetic Force on a CurrentCarrying Conductor
22.8 Torque on a Current Loop: Motors and Meters
22.10 Magnetic Force between Two Parallel Conductors
22.11 More Applications of Magnetism
Chapter 23: Electromagnetic Induction, AC Circuits, and Electrical Technologies
23.1 Induced Emf and Magnetic Flux23.2 Faraday’s Law of Induction: Lenz’s Law
23.3 Motional Emf
23.4 Eddy Currents and Magnetic Damping
23.5 Electric Generators
23.6 Back Emf
23.7 Transformers
23.9 Inductance
23.10 RL Circuits
23.11 Reactance, Inductive and Capacitive
23.12 RLC Series AC Circuits
Chapter 24: Electromagnetic Waves
24.1 Maxwell’s Equations: Electromagnetic Waves Predicted and Observed24.3 The Electromagnetic Spectrum
24.4 Energy in Electromagnetic Waves
Chapter 25: Geometric Optics
25.1 The Ray Aspect of Light25.3 The Law of Refraction
25.4 Total Internal Reflection
25.5 Dispersion: The Rainbow and Prisms
25.6 Image Formation by Lenses
25.7 Image Formation by Mirrors
Chapter 26: Vision and Optical Instruments
26.1 Physics of the Eye26.2 Vision Correction
26.5 Telescopes
26.6 Aberrations
Chapter 27: Wave Optics
27.1 The Wave Aspect of Light: Interference27.3 Young’s Double Slit Experiment
27.4 Multiple Slit Diffraction
27.5 Single Slit Diffraction
27.6 Limits of Resolution: The Rayleigh Criterion
27.7 Thin Film Interference
27.8 Polarization
Chapter 28: Special Relativity
28.2 Simultaneity and Time Dilation28.3 Length Contraction
28.4 Relativistic Addition of Velocities
28.5 Relativistic Momentum
28.6 Relativistic Energy
Chapter 29: Introduction to Quantum Physics
29.1 Quantization of Energy29.2 The Photoelectric Effect
29.3 Photon Energies and the Electromagnetic Spectrum
29.4 Photon Momentum
29.6 The Wave Nature of Matter
29.7 Probability: The Heisenberg Uncertainty Principle
29.8 The ParticleWave Duality Reviewed
Chapter 30: Atomic Physics
30.1 Discovery of the Atom30.3 Bohr’s Theory of the Hydrogen Atom
30.4 X Rays: Atomic Origins and Applications
30.5 Applications of Atomic Excitations and DeExcitations
30.8 Quantum Numbers and Rules
30.9 The Pauli Exclusion Principle
Chapter 31: Radioactivity and Nuclear Physics
31.2 Radiation Detection and Detectors31.3 Substructure of the Nucleus
31.4 Nuclear Decay and Conservation Laws
31.5 HalfLife and Activity
31.6 Binding Energy
31.7 Tunneling
Chapter 32: Medical Applications of Nuclear Physics
32.1 Medical Imaging and Diagnostics32.2 Biological Effects of Ionizing Radiation
32.3 Therapeutic Uses of Ionizing Radiation
32.5 Fusion
32.6 Fission
32.7 Nuclear Weapons
Chapter 33: Particle Physics
33.2 The Four Basic Forces33.3 Accelerators Create Matter from Energy
33.4 Particles, Patterns, and Conservation Laws
33.5 Quarks: Is That All There Is?
33.6 GUTS: The Unification of Forces
Chapter 34: Frontiers of Physics
34.1 Cosmology and Particle PhysicsWatch online Ebook OpenStax PhysicsStudent Solution Manual
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