The Drake Equation * The Drake Equation was created by Frank Drake in 1960. * estimate the number of extraterrestrial civilizations in the Milky Way. * It is used in the field of Search for ExtraTerrestrial Intelligence (SETI). * National Academy of Sciences asked Drake to organize a meeting on detecting extraterrestrial intelligence. Reason drake equation created * Drake equation is closely related to the Fermi paradox * The Drake Equation is: N = R * fp * ne * fl * fi
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Cause and Effect on The Cold Equation In the story "the Cold Equation" by Tom Godwin‚ the author created a cause and effect relationship by having Marilyn decide to stowaway on the emergency dispatch ship that only has enough fuel for one person. Because Marilyn decided to stowaway she ended her own life‚ forced Barton to deal with having to kill a woman‚ negatively affects the results of the mission to Woden‚ and for her parents and brother to deal with her death. Marilyn’s last moments of her life
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Kinematic Derivation of the Wave Equation http://prism.texarkanacollege.edu/physicsjournal/wave-e... KINEMATIC DERIVATION OF THE HARMONIC WAVE EQUATION AND RELATED TOPICS An extremely important type of wave in physics is the harmonic wave. This is a wave consisting of propagating simple harmonic oscillations or linear combinations thereof. Attach a weight to a spring and hang the spring so the weight is free to move. Then lift the weight straight up and release it; it will oscillate up and down
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Method of Communication and Different Uses of Communication With the development of civilization and written languages came the need for more frequent and reliable methods of communication allowing messages to reach longer distances. This was essential to the control of trade and other affairs between nations and empires. Early man used cave walls as the media on which messages could be transcribed‚ this was common for many years‚ until the Egyptians discovered a special kind of rush (Papyrus)
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that is written first and negative half is written second. Subscripts are small numbers to the lower right of a symbol. They the number of atoms of that element in the compound. Coefficients are large numbers to the left of formulas in chemical equations. They represent the ratio of molecules of each substance involved in a chemical reaction. Weight Percentage is a percentage based on weights. Mole percentage is a percentage based on the numbers of atoms or moles. Formula units is the simplest
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CHEMISTRY TOPIC 11 CHEMICAL CALCULATIONS CHEMICAL CALCULATIONS INTRODUCTION The first part of this ‘Chemical Calculations’ topic will help us to work out QUANTITIES involved in a reaction; For example‚ a manufacturer might want to know‚ How much ammonia will I produce from 20 tonnes of nitrogen in the Haber Process? To do these calculations you will need to be familiar with the term Ar (relative atomic mass)‚ Mr‚ Molar mass and Mole. Relative Atomic
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Solving Problems Brandi December 22‚ 2013 Solving Problems In this essay‚ I will solve two problems from our textbook Elementary and Intermediate Algebra; I will solve problem 56 on page 437 and problem 10 on page 444. For my first problem‚ I will choose an appropriate variable to help solve the equation‚ for my second equation I will identify the form of the equation I end up with once it is solved. I will also introduce five math vocabulary words‚ they are‚ extraneous
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Calorimetry Equations Monday‚ October 28‚ 2013 12:00 PM TOOL BOX q=mc∆T Water sp. Heat Calorimetry : the measurement of energy (calorie) Calorimeter : tool used to measure energy by Measuring the change in temperature Equation : q=mc∆T What is the difference between Calorimetry and Calorimeter? Quantity of Energy (Cal.) Mass (g) Specific heat (given) (Cal/g) Change in temperature (℃ ) (End-short) What is the dance that we learned
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ACCOUNTING EQUATIONS 1. Show the accounting equation for the following transaction (i) Ram started business with cash 20000‚ stock 50000‚ building 30000 (ii) Sold goods to Amit for cash 20000 and credit 15000 (iii) Paid rent 500 and rent outstanding 150 (iv) Sold goods costing 12000 for Rs. 15000 (v) Accrued commission 2000 (vi) Furniture purchased from Lalit 12000 and paid 3000 in cash (vii) Received from Amit 13500 in full settlement (viii)
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2/20/2014 Frequently Used Equations - The Physics Hypertextbook Frequently Used Equations Mechanics velocity Δ s v= Δ t ds v= dt acceleration Δ v a= Δ t dv a= dt equations of motion v = 0+at v x =x0+v 0 +½ 2 t at weight W =m g momentum p =m v dry friction ƒ μ =N centrip. accel. v2 ac = r 2 ac =−ω r impulse J =F Δ t impulse–momentum F Δ= Δ t m v J =⌠ dt F ⌠ dt =Δ F p ⌡ kinetic energy potential energy ⌡ K =½ mv
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