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Physics

Circular Motion Questions

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Physics
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Physics
Rotation
Force
Classical mechanics
Mechanics
Physical quantities
Fictitious force
Centrifugal force
Acceleration
Centripetal force
Pendulum
Circular motion

Name ____________________ Date ___________?Mr. Carcich Physics 2D Motion Short Answers 1) Distinguish between rotation and revolution. Using the earth, provide an example of each. 2) Distinguish between rotational and tangential speed. What is their relationship? 3) If you are on the center of a merry-go-round, and you walk toward the outer edge, how does your rotational speed change? Your tangential speed? 4) When you whirl a can at the end of a string in a circular path, what is the direction of the force that acts on the can? 5) Does an object undergoing uniform circular motion accelerate? Why? 6) When a car makes a turn, do seat belts provide you with a centripetal force or centrifugal force?

Chemistry MidTerm Review

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Chemistry
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Chemistry
Physics
Nuclear chemistry
Nuclear physics
Chemical properties
Mass
Baryons
Chemical element
Mass number
Isotope
Atomic mass
Neutron

CP Chemistry Midterm Review List Substance: element & compound ? water, Aluminum, ethanol, carbon dioxide Homogeneous vs. Heterogeneous Physical & Chemical Properties & changes: Freezing/melting, boiling/condensing ;State Change (melting point) Burning/ rusting Metric system: Units, prefixes (kilo-milli), and conversions one milliliter equals 1 cm3 325 mg can be expressed in grams Temperature scales & conversion - Celsius temperature is equivalent to 298K Accuracy vs. precision Scientific Notation & Significant figures 149,000,000 Percent error A molar mass of a compound is 75 g/mol. A student reported an experimental value of 78 g/mol. The percent error is Density

Unit 12 Review Physics

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Physics
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Electromagnetism
Physics
Electronics
Analog circuits
Physical quantities
Electricity
Electronic engineering
Resistor
Electrical resistance and conductance
Voltage
Electric current
Electronic circuit
Technology

Name ____________________ Date ______ Mr. Carcich CP Physics Current Electricity & Circuit Review Be sure you understand completely the following concepts. You need to know: Electric Current Define current. What are the units for electrical current? What is conventional current? What is drift velocity? Current- the rate of flow of electrical charges Conventional current- the flow that positive charges would flow (if they did flow), positive to negative Actual current- direction that electrons would flow, negative to positive Drift velocity- average velocity that a particle, such as an electron, attains due to an electric field What is necessary for a current to begin to flow? What must you connect to a circuit?

Ch 2: Environmental systems

Subject: 
Environmental Science
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Chemistry
Physics
Chemical bond
Chemical reaction
Hydrogen bond
molecule
Hydrogen
Properties of water
matter
Radiation
Chemical substance
ion

Pauline Lee APES Chapter 2: Environmental Systems A Lake of Salt Water, Dust Storms, and Endangered Species Mono Lake- terminal lake water flows into it, but doesn?t flow out a. Picks up salt and other minerals- deposited in the lake b. Evaporation- buildup of salt concentration c. Mono brine shrimp/larvae of Mono Lake alkali fly i. Consume microscopic algae Los Angeles Department of Water and Power reduce amount of water diverted and allow the lake to refill to about 2/3rds of historical depth Earth is a Single Interconnected System Large system may contain many smaller systems within it Fisheries of the North Atlantic a. Physiologist- study how codfish survive in freezing waters i. Fish and internal organs system being studied

Chapter 6- Chemistry in Biology

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Biology
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Chemistry
Physics
Nuclear chemistry
Quantum chemistry
Charge carriers
Baryons
Chemical bond
molecule
matter
Proton
Isotope
Atom
Technology

Chapter 6-Chemistry in Biology COMPOSITION OF MATTER -Matter-everything in universe is composed of matter. -Matter is anything that occupies space or has mass -Mass-quantity of matter in an object -Weight-pull of gravity on us ELEMENTS -Pure substances that cannot be broken down chemically into simpler kinds of matter -More than 100 elements (92 naturally occuring) -90% of the mass of an organism is composed of 4 elements (oxygen, carbon, hydrogen, and nitrogen) -Each element has a unique chemical symbol -Consists of 1-2 letters -First letter is always captialized ATOMS -The simplest particle of an elemetnt that remains all the properties of that element. -Properties of atoms determine the structure and properties of the matter they compose.

Science history

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Chemistry
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Chemistry
Physics
Science
Atomic physics
Chemical properties
Nuclear physics
Quantum chemistry
Atomic theory
Atomism
Atomic number
Chemical element
electron
Technology

History of Science ? ? Illusion ? Delusion - Truth I thought this was Science Course Science is the Truth ?. but but ?.. Science seems to change all the time Hmmmm First Quiz From Fire to Atomism Early Greek Atomic Theory Some thought EVERYTHING was made from water in one of the forms (ice, liquid, gas) Democritus ? atoms differed in only shape and size The concept of the ?nocut? atomos was developed ? SMALLEST BUILDING BLOCK Arostotle ? all matter is composed of four elements ? Earth, air, fire, water The philosopher's stone and the rise of alchemy ?convert cheaper metals into gold finding the?elixir of life ?in the air an "ether" which breathed life into living things Problems with Alchemy

Crystalline_Solids

Subject: 
Chemistry
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Chemistry
Physics
Crystallography
Materials science
Diffraction
Condensed matter physics
Optics
Ionic radius
Cubic crystal system
Pauling's rules
Coordination number
Powder diffraction

Crystalline Solids Crystal Lattice ? A 3D array of points where each point has an identical environment. Unit Cell ? The repeating unit (a unit cell is to a crystal, like a ?brick? is in a house). In a given crystal all unit cells are identical. CaF2 Unit Cell Large cation & Large anion r(Cation)/r(Anion) ~0.72 Small cation & Large anion r(Cation)/r(Anion) ~0.3 Cation Anion Anions and cations want to stay in contact with each other, but when the cation becomes much smaller than the anion, anion-anion contacts prevent this. The solution is to lower the coordination number Ionic radii and coordination number Radius Ratio Rules r(cation)/r(anion) Coordination Number Coordination Geometry ? 0.73 8 Cube ? 0.41 6 Octahedron ? 0.22 4 Tetrahedron ? 0.15 3 Trigonal Planar

Atomic Structure

Subject: 
Chemistry
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Physics
Chemistry
Atomic physics
Quantum chemistry
Rotational symmetry
Introductory physics
Quantum electrodynamics
Bohr model
Introduction to quantum mechanics
Atomic orbital
electron
Principal quantum number
Technology

The Wave Nature of Light All forms of NRG/Light have characteristic wavelengths (?) and frequency (?). Inversely related ? ? = c (the speed of light) Light visible to the naked eye exists as a tiny portion of the electromagnetic spectrum Max Planck Transfer of energy was not continuous Only came in certain values (quantized) ?E = h? h = Planck?s constant = 6.626 x 10-34 Js Packets of energy (quantum Albert Einstein Proposed that electromagnetic radiation was quantized and made up of a stream of particles Photons The dual nature of light ? = h/mv (deBroglie equation) Electrons as Waves Louis de Broglie (1924) Applied wave-particle theory to electrons electrons exhibit wave properties QUANTIZED WAVELENGTHS

Periodic Trends Lecture

Subject: 
Chemistry
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Chemistry
Physics
Quantum chemistry
Atomic physics
Chemical bonding
Periodic Table
ions
Ionization energy
Valence electron
Periodic trends
ion
Alkaline earth metal
Technology

* Chapter 7 Periodic Properties of the Elements John D. Bookstaver St. Charles Community College Cottleville, MO Lecture Presentation Development of Periodic Table Dmitri Mendeleev and Lothar Meyer independently came to the same conclusion about how elements should be grouped. Development of Periodic Table Mendeleev, for instance, predicted the discovery of germanium (which he called eka-silicon) as an element with an atomic weight between that of zinc and arsenic, but with chemical properties similar to those of silicon. Periodic Trends In this chapter, we will rationalize observed trends in Sizes of atoms and ions. Ionization energy. Electron affinity. Effective Nuclear Charge

Bob Jones PPT Notes -- Chapter 10c

Subject: 
Chemistry
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Chemistry
Physics
Physical quantities
Physical chemistry
thermodynamics
Introductory physics
Amount of substance
Gas laws
Stoichiometry
Gas constant
Avogadro's law
Mole
Environment

Gases and the Mole Gay-Lussac formulated the law of combining volumes. Law of Combining Volumes Gases at the same temperature and pressure react with one another in volume ratios of small whole numbers. Law of Combining Volumes Example 1: H2 + Cl2 2HCl 1 L + 1 L 2 L Law of Combining Volumes Example 2: 2H2 + O2 2H2O 2 L + 1 L 2 L Avogadro?s law The volume of a gas, maintained at a constant temperature and pressure, is directly proportional to the number of moles of the gas. Molar Volume the volume that a mole of gas occupies at standard temperature and pressure Molar Volume 1 mole of ANY gas at STP occupies 22.4 L. Sample Problem 1 What volume would 7 moles of carbon dioxide occupy at STP? = 157 L CO2 7 mol CO2 22.4 L 1 mol Change 228 L of O2 at STP to moles. 470 moles 426 moles

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