Dimensional analysis.ppt
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Sound waves are produced by vibrating objects and their characteristics include pitch, which can be manipulated through illusions like Shepard tones, and speed which varies by medium and can exceed the speed of sound producing a sonic boom. The intensity of sound decreases with the inverse square of distance from the source and is perceived logarithmically in decibels with higher decibel levels associated with louder sounds.Wave properties
Wave propertiescpphysics
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This document summarizes key concepts about wave properties. It defines waves as a movement of energy through space and time that requires a medium to travel through. It describes the characteristics of frequency, period, speed, wavelength, and how they are related. It differentiates between transverse and longitudinal waves, and provides examples of each. It also explains several phenomena waves can undergo, including interference, reflection, refraction, diffraction, polarization, and standing waves.Ch12 - magnetism notes
Ch12 - magnetism notescpphysics
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Magnetism has been observed for over 2000 years, with lodestones in ancient Greece exhibiting strange properties of attraction and repulsion. In 1820, Hans Christian Oersted discovered the relationship between electricity and magnetism when an electric current caused a compass needle to deflect. Magnets have both north and south poles and exert a magnetic field that can attract or repel other magnetic materials without touching them. The strength of the magnetic field depends on distance from the magnet.Ch11 - circuitsconceptual
Ch11 - circuitsconceptualcpphysics
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1) An electric circuit is a complete path that allows electric current to flow. A battery acts as a pump to push current through the circuit.
2) There are two basic types of circuits: series circuits where current flows through components one after another, and parallel circuits where current divides among branches.
3) Circuit diagrams use symbols to represent components and show connections using straight lines meeting at right angles. Voltmeters measure voltage in parallel, ammeters measure current in series. Fuses and circuit breakers prevent overloading.4 electrostatic intro
4 electrostatic introcpphysics
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This document discusses electrostatics and charge. It contains the following key points:
1. Charge is an inherent property of matter that comes in two types: positive and negative. Protons and electrons have equal but opposite charges.
2. The net electric charge of a system must remain constant according to the law of conservation of charge. Like charges repel and unlike charges attract.
3. There are three ways to charge an object: through friction, contact, or induction. Grounding encourages charges to flow to a neutral object like the earth. Polarization is a special form of induction where one side of an object becomes slightly more positive or negative.Ch10 - capacitors 2
Ch10 - capacitors 2cpphysics
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This document discusses the history and operation of capacitors. It explains that capacitors store charge on two conductors separated by an insulator. The first capacitor was the Leyden Jar invented in 1745. Capacitance is defined as the ratio of stored charge to potential difference and depends on the area of the plates and distance between them. Capacitors are used to prevent information loss, store energy for high power applications like lasers, and in applications like cameras and keyboards that require short bursts of energy.Ch10 - potential difference and electric potential energy
Ch10 - potential difference and electric potential energycpphysics
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Electric potential energy and gravitational potential energy both increase as work is done to overcome a field and raise an object or charge. Voltage measures electric potential energy per unit charge and represents how much energy a charge will gain or lose when moving through a potential difference. It is defined as the change in electric potential energy divided by the charge and can be measured in joules per coulomb (volts).Ch10 - ohm's law
Ch10 - ohm's lawcpphysics
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This document defines and explains key electrical concepts including electromotive force (EMF), voltage, current, resistance, Ohm's law, electric power, and kilowatt-hours. It states that voltage causes electron flow, current is the flow of electrons over time, resistance resists electron flow, Ohm's law says current is equal to voltage divided by resistance, and electric power is calculated as current multiplied by voltage and measured in watts or kilowatts.Ch9 - electric fields
Ch9 - electric fieldscpphysics
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1. There are two types of forces: contact forces which require touching and non-contact forces like gravity and electric fields which act over a distance through a field.
2. Michael Faraday discovered that charged objects create electric fields in the space surrounding them, and that these fields can exert forces on other charges in the field without touching.
3. There are two equations that describe the electric force on a test charge: F=kQq/r^2 which gives the electric field strength E created by a point charge Q, and F=Eq which gives the force F on a test charge q in an electric field E.Ch9 - coulomb's law
Ch9 - coulomb's lawcpphysics
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This is a power point for Conceptual Physics. There are some slides with math but most of it is concepts. Ch9 - electrostatics
Ch9 - electrostaticscpphysics
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This document discusses electrostatics and charge. It contains the following key points:
1. Charge is an inherent property of matter that comes in two types: positive and negative. Protons and electrons have equal but opposite charges.
2. The net electric charge of a system must remain constant according to the law of conservation of charge. Like charges repel and unlike charges attract.
3. There are three ways to charge an object: friction, contact, and induction. Grounding encourages charges to flow to a neutral object like the earth. Polarization is a special form of induction where one side of an object becomes slightly more positive or negative.Recently uploaded (20)
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Dimensional analysis.ppt
- 1. A N D M E T R I C S DIMENSIONAL ANALYSIS
- 2. THIS IS HOW I FEEL WHEN I HEAR DIMENSIONAL ANALYSIS
- 3. SO JUST TELL ME WHAT TO DO!
- 4. 1. KEEP THIS INFORMATION HANDY Three bases: Meter, Liter, Gram Add in a prefix:
- 5. 2. GIVE ME JUST ONE REASON!
- 6. MORE TO THE POINT:
- 7. BUT: Prefixes save 1. Work 2. Energy 3. Time
- 8. REMEMBER THE PREFIXES? We use them like this: How? How? We need a relationship!
- 9. This is One way But another useful Way is On the Next slide.
- 10. EXAMPLES OF CONVERSIONS AND DIMENSIONAL ANALYSIS 1. look at units and see if you can cancel all the ones on the top and bottom: cl ml mg Mm km mi ml mm N km mi mm km kg cl ml ml mg 2. Use your prefix chart to put numbers in front of these Units. 17 km x ______m x _______cm = __?___ km m Cancel out units until you cannot cancel anymore. Multiply across the top and divide by the bottom. What is Left?
- 11. TRY AND TRY AND TRY! 56 Mm x _____m x ______Gm = ______ Mm m 35 m x _____km x ______s = ______ s m hr Put in the numbers and solve:
- 12. ITS POSSIBLE I CAN GET THIS! Set up one by yourself: 2345.5 km = ? cm 1. Write the left side 2. put an x and a line 3. Put the unit you start with On The bottom. Keep going. Cancel. Multiply. Divide. 2345.5 km x ___ m_ km x ____cm m 103 1 1 10-2 = 2.3455 x 108 cm
Editor's Notes
- #13: Use this slide on a white board so that the units can be cancelled by the instructor.