Total # Posts: 1,339
A man pulled a nail our of a board with a crowbar. The nail was 2 in. from the fulcrum of the crowbar, and the effort applied was 36 in. from the fulcrum. If the theoretical effort applied was 10 lb., what was the force of friction between the board and the nail? How far did ...
June 23, 2008
A ball is dropped from rest and falls for 5 s. What are its position and velocity at that instant? So the variables I can define are v1=0, v2= x t=5 Other than that I don't know what to do in this problem. I'm assuming position is the height so I'm looking for ...
June 12, 2008
an arresting device on a carrier deck stops an airplane in 1.5s. the avg. acceleration was 49 m/s2. what was the stopping distance? what was the initial speed? so i think v2=0, t=1.5, a= 49, so i need d and v1. i got v1=73.5 m/sec and d= 55 m. i took 0=v1-49(1.5) to get that ...
June 12, 2008
Assume that preferencse are given by u(c,L) = 2*ln(c) +ln(L). The wage rate is $15 and the person has 120 hours of time available. Profits are 0. Taxes are 0. Write down two equations that describe the constraints faced by this consumer. Find an equation for the Marginal Rate ...
May 24, 2008
"The united states in congress assembled shall never engage in war...nor coin money,nor regulate the value thereof, nor [spend] the sums and expenses necessary for the defense and welfare of the united states...nor borrow money on the credit of the united states...nor ...
May 15, 2008
how do you calculate the number of millilliters of 1 M required for an amount of moles? and how would i find out what remains in the beaker when distilled water is evaporated from a beaker?
May 6, 2008
how would you calculate the number of milliliters of 1 M HCl required for .212 mol of HCl?? and how could i find out what remains in the beaker when distilled water is evaporated in a beaker?
May 6, 2008
as the size and volume of flying birds increase, surface area of wings cannot increase proportinal to general body surface area. is this a true statement? explain your answer using words and math. bird size seems severely constrained wheras aircraft size is not...why? do the ...
May 3, 2008
I have no clue how to figure this out! Can you tell me how to figure it out? 2 positive numbers are in a ratio of 9 to 10. if the lesser number is decreased by 6 and the greater number is decreased by 25, the resulting ratio is 2 to 1. find the greatest of the original numbers.
April 22, 2008
Do you believe that humans can harvest forest resources in an environmentally friendly way? or should national forests be left in their natural state in which resources are not used to benefit humans?
December 3, 2007
I'm having trouble with converting units. My teacher wants us to show work but I can't figure out how to do it. An example is, 35 mL = ____ dL. By showing work, how do you do that?
September 14, 2007
We're supposed to translate the following sentence into spanish: It smashed cars and destroyed buildings. The verb our book told us to use for "smashed" is "hacer pedazos." Would you say "Hizo pedazos los coches..." or "Hizo pedazos de ...
September 13, 2007
hi i need to know how to do this one thanks Find the solution to yx + x + (dy/dx) = 0 ; y(9) = -9 y = ???? Does this separate the variables? dy/dx=-x(y+1) dy/(y+1) = -x dx
August 5, 2007
x^2-9x-4=6 solve by completing the square show steps plz :D Add 4 to both sides. What is 1/2 of -9? Then square that, and add it to both sides. Now, on the left, you have a perfect square.. (x-9/2). Take the square root of each side. Remember the right side will be +-.
July 12, 2007
health and human services
Give an example of how each of the following management structures affects the day-to-day work of an organization. 1. Departmentalization 2. Matrix Organizations 3. The Project Team 4. The Collegial Model Since this is not my area of expertise, I searched Google under ...
July 9, 2007
How do poets utilize literary devices and conventions to develop themes in their poetry? Good explanation here: "Language is a means of communication by symbolic sounds and graphics. The meaning of these symbols is affected by the use of literary devices which further ...
July 3, 2007
Did the West Indies help the Spanish conquistadors? "The analogous "West Indies" originates from Christopher Columbus' idea that he had landed in the Indies (then meaning all of south and east Asia) when he had actually reached the Americas." from http...
May 25, 2007
Describe the effects of protective tariffs. Why might a government limit free trade in this way? I know that a protective tariff is designed to protect a domestic industry but i can't figure out the rest of the question. Governments impose tariffs on imported goods so that...
May 15, 2007
I'm making this desert island project where you have no hope of getting rescued and you are with 149 other people. you must make your own currency, government, etc. with whatever. i don't know how to make my won government. what the? teachers are confusing... by won i ...
May 14, 2007
vocab-true or false
True or False: 1. A subway breakdown at rush hour can rejuvenate hundreds of commuters 2. In the 19th century, workers were sometimes exploited by their employers. 3. Heavyweight boxers do not inflict any pain or injury on one another. go to keyword: dictionary to look up the ...
May 5, 2007
how do you change the fraction 8/35 to a percent? please try to help. thanks You would put 8 divided by 35 into your calculator, and you get 0.22.......... Next, you would move the decimal two places to the right and round to the nearest tenth- about 22.9% p.s - your teacher ...
April 23, 2007
I don't understand this equation: Given f(x)=4(x)+1 find the value. f(3) It's fairly basic, you just plug 3 in for x, so it would be 4(3)+1 and then you'd just simplify it :)
April 19, 2007
how can a loan for school tuition affect the money supply? how can it affect aggregate demand? A loan, taken out of some cash reserve, would increase the money supply. The amount of the increase would be determined by the money-multiplier. The increase in spending (in this ...
April 10, 2007
True or False 1.Total output may continue to rise even though the marginal physical product (MPP) is decreasing Think about it, then take a shot. Hint: while MPP is decreasing, can it sign still be positive?
March 25, 2007
could we ever achieve an unemployment rate below full employment? What problems might we encounter if it did? I'm not sure if I understand your question. To my knowledge, we can never achieve full employment in the United States. It is always "an unemployment rate ...
March 20, 2007
suppose we established a $10,000 fine for water pollution. Would some companies still find that polluting was economical? Under what conditions? If the cost of correcting the cause of the water pollution were more than $10,000, then a company might believe it was saving money ...
March 13, 2007
What are 5 deteminants of demand for JONES Soda Co? What are 4 determinants of supply for JONES Soda Co? Think about what influences supply and demand e.g., what are some factors that would shift the supply curve? the demand curve? And this will be your answer.
March 11, 2007