(a) CO2 emissions C from a nations energy system can be expressed as: C = Population x Energy consumption per person x CO2 emissions per unit of energy consumption. Initially, total emissions are 600 million tonnes of CO2 per year. If, over a 50-year period, population ...
August 2, 2010
A cup of mass m, placed on the edge of a table of height h, has potential energy mgh, where g is the acceleration due to gravity. Someone slams a door, causing the cup to fall to the floor. If h = 100 cm, what is the approximate speed of the cup when it hits the floor? (Note: ...
August 2, 2010
The two lines with the equation r=(1,2,-44)+ t(k+1, 3k+1,k-3) and x=2-3s, y=1-10s, z=3-5s, are given. a) determine the vaulue for K when the lines are paralel b) determine the value of K when the lines are perpendictular
May 30, 2010
What is an antithesis? and I can i create one if my thesis is "Using the characters in these literary pieces both authors assert that humans are naturally inclined to exhibit dark or evil side". My 3 arguments are that metamorphises, quest for the surreal and immoral...
May 24, 2010
What mass of copper solid, initially at 25oC,should be added to 100 g of steam, initially at100oC, if we want exactly half of the steam to condense? The specific heat of copper is 0.385 J g-1 oC-1. For water, the heat of vaporization is 2257 J g−1.
May 19, 2010
The squares of an infinite chessboard are numbered as follows: in the first row and first column we put 0, and then in every other square we put the smallest non-negative integer that does not appear anywhere below it in the same column or anywhere to the left of it in the ...
April 2, 2010
Cash conversion cycle American Products is concerned about managing cash efficiently. On the average, inventories have an age of 90 days, and accounts receivable are collected in 60 days. Accounts payable are paid approximately 30 days after they arise. The firm has annual ...
October 19, 2009
Q: do tomato plants grow better with fertilizer Hypothesis: I think if i give the tomatoes fertilizer they will grow taller Contolled Experiment 1. Control group list factors 2. Experimental Independant Variables 3. DATA COLLECTION
September 8, 2009
Can you help me with this? Would (A) or (D)be the best answer? A teacher would be wise to study other cultures and their beliefs since: A. Understanding cultural differences allows a teacher insight into the family's expectations of the children. B. parents will be ...
September 6, 2007
Is this an example of sequential billingualism or simultaneous billingualism? (I'm thinking it's an example of sequential billingualism.) Adrienne is four years old. Her mother is French,and her father is American. They both have spoken their native language to ...
September 5, 2007
Will someone please check my answer to make sure I have chosen the most appropriate choice. 1. Gabriella speaks Spanish at home with her family and friends. She attends public school where she is learning some English and is instructed in English for all of the subjects. ...
September 4, 2007
although a democracy is based on freedom of expression, most people recognize the need to allow the government to excercise control over such things as false and misleading advertisements or advertisements of illegal products.Is the banning of cigarette advertising on ...
April 14, 2007
PERSUASIVE WRITING ON TRANSPORTATION ARE TRAINS BETTER THAN THE BUSES? I can't wait to read what you wrote and help you with it. Sounds like a good topic. Here in Taiwan, we can get around the country in either a train or a bus fairly inexpensively and conveniently. I ...
March 18, 2007