Sunlight is shown coming in from the right. The earth‚ of course‚ is at the center of the diagram. The moon is shown at 8 key stages during its revolution around the earth. The moon phase name is shown alongside the image. The dotted line from the earth to the moon represents your line of sight when looking at the moon. The large moon image shows what you would see at that point in the cycle. For the waning gibbous‚ third quarter‚ and waning crescent phases you have to mentally turn yourself upside
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this allowed more accurate results to be obtained. Furthermore the lengths given in the book were used as merely guidelines and not followed precisely also 50 and 100-gram masses were used. RESULTS Force (N) Radius(m) Period (20 Revolutions) (s) Orbital Velocity v m/s v" g x 50g 1.03 19.47 6.65 44.19 g x 50g 0.83 17.02 6.12 37.55 g x 50g 0.64 14.14 5.68 32.35 g x 50g 0.37 9.94 5.2 27.04 g x 100g 1.06 16.86 7.9 62.41 g x 100g 0.82 14.4 7.15 48.702 g x 100g 0.62 12.8 6.08 37.01 g x 100g 0.44
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must be doubly bonded to one of those molecules. For a double bond to form p-orbitals must overlap over a sigma bond. The hybridization loses one p-orbital‚ leaving the carbon as sp2‚ allowing the formation of the other bond with the free p-orbital‚ forming a pi-bond. Back to our question‚ why are the aldehyde and a ketone more reactive than an alkane. When the pi-bond forms the electrons in this molecular orbital are more exposed‚ making them more vulnerable to reacting. Try to visualize the
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crimson Ba --green In the flame‚ the ions are reduced to gaseous metal atoms. Compound -------- heat------- atoms The high temperature of the flame excites a valence electron to a higher-energy orbital. The atom then emits energy in the form of (visible) light as the electron falls back into the lower energy orbital (ground state). excited state absorbed energy emitted energy E = h.c/ʎ ground state The ground state atom absorbs light of the same characteristic wavelengths as it emits when returning
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What You Need To Know for the Chemistry Regents Exam The Test The Chemisty Regents Exam is broken down into three sections: Part A: 35 mulitple choice questions from all units covered over the course of the school year. Part B: Approximately 25 questions‚ with a mix of short answer and multiple choice. Questions focus on the Reference Tables‚ graphing‚ and laboratory experiments. Part C: Approximately 15 short answer questions‚ most broken down into smaller parts. This is often an
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In the presentation‚ Island Civilization: A Vision for Human Occupancy of Earth in the Fourth Millennium‚ published on October 16‚ 2008‚ Roderick R. Nash presents the idea of four possible courses of which the human race could follow in the future. These paths‚ termed the wasteland‚ garden planet‚ future primitive‚ and the Island Civilization scenarios all take extreme viewpoints and present controversial hypotheticals‚ that do not seem very practical. It is with these thoughts in mind that I present
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THE GLOBAL ORBITAL LAUNCH VEHICLE INDUSTRY PETER M. MADSEN Brigham Young University VINIT DESAI University of Colorado‚ Denver It is unclear whether the common finding of improved organizational performance with increasing organizational experience is driven by learning from success‚ learning from failure‚ or some combination of the two. We disaggregate these types of experience and address their relative (and interactive) effects on organizational performance in the orbital launch vehicle
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The horizontal rows are known as periods‚ organized by the number of atomic orbitals in an element and the elements are also organized by atomic number starting at one and ending at one-hundred and eighteen. The vertical columns are known as groups‚ organized together based on the number of valence electrons located in the outer orbital of atoms. Last‚ to add to the ease of organization‚ the periodic table also has eight groups organized by color depending
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Problem: For a p-electron‚ orbital angular moment is (A) √2h (B) h (C) √6h (D) 2h Solution: Orbital angular momentum L = √l ( l + 1 )h where h = h/2π ∴ L for p electron = √1 ( 1 + 1 )h = √2h ∴ (A) Problem: For which of the following species‚ Bohr theory doesn’t apply (A) H (B) He+ (C) Li2+ (D) Na+ Solution: Bohr theory is not applicable to multi
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Basics scientific notation for distances Earth-Sun distance = 93 million miles = 8.3 light minutes = 1 AU Celestial Spheres & Motions of Stars Zenith- point on celestial sphere directly overhead Nadir- point on celestial sphere directly below Celestial poles- either of two points at which extensions of earth’s axis intersect celestial sphere Circumpolar stars- stars that never set at a given latitude; all stars between Polaris and northern horizon Diurnal motion of stars Means daily Stars
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