Total # Posts: 994
A Primary source is: a) the main source that a historian uses in a given book. b) someone interviewed for a story on the Iowa caucuses. c) an especially reliable historical text. d) a record that historians use to understand a past time period.
March 17, 2016
Let x equal the age, in human years, for a dog that is 2 years old or older. For each of your chosen breeds, write an expression to model its age in dog years. [Hint: Use (x-2) in each expression.] the dogs are 2yrs: 23 yrs old 3yrs: 27 yrs old 4yrs: 31 yrs old 5yrs: 35 yrs ...
March 1, 2016
A 20.0 kg block is connected to a 30.0 kg block by a string that passes over a light, frictionless pulley. The 30.0 kg block is connected to a spring that has negligible mass and a force constant of 260 N/m, as shown in the figure below. The spring is unstretched when the ...
February 27, 2016
two airplanes travelling in opposite directions , leave an airport at the same time. if one plane averages 480 ml/hr and the other averages 520 ml/hr, how long will it take before they are 2000 ml apart?
December 11, 2015
Make predictions about how many times the graph of each equation below will touch the x axis. You may first want to rewrite some of the equations in a more useful form.=(x-2)(x-3). A. y=(x+1)^2 B. y=x^2+6x+9 C. y=x^2+7x+10 D. y=x^2+6x+8 E. y=-x^2-4x-4
November 24, 2015
The electric field at a distance of 0.150 m from the surface of a solid insulating sphere with radius 0.367 m is 1720 N/C . Assuming the sphere's charge is uniformly distributed, what is the charge density inside it? Calculate the electric field inside the sphere at a ...
October 3, 2015
Two passenger trains are passing each other on adjacent tracks. Train A is moving east with a speed of 35.5 m/s, and train B is traveling west with a speed of 33.4 m/s. (a) What is the velocity (taking due east to be the positive direction) of train A as seen by the passengers...
September 11, 2015
John is working the function s(x). He found that s(2)=-6 Matthew is working with the function t(x). He found that t(2)=-6 The point (2,-6) lies on the graph of s(x) and t(x). True or False?
July 20, 2015
a gun converts 200J of stored energy into kinetic energy of the 0.02kg bullet. What is the speed of the bullet as it leaves the gun? If the gun is fired straight up, how high will the bullet go?
April 23, 2015
A 25 gram arrow fired from a bow has a speed of 80m/s. The energy in the arrow came from work done by the bow that acted over a 1m "draw" distance. What average force acted on the arrow over this distance?
April 23, 2015
Suzanna does not have a ruler but she has a several books that is 17 centimeters tall. Suzanna lays the books end to end and finds tat the board is the same length as 21 books. How many centimeters long is the board
December 14, 2014
you are a manufacturer of antacids. you could use either mg (oh)2 or al(oh)3 in your formulation. you can buy either of these for $2.00 per pound . which of these will provide a better product (i.e., give more relief) for the same amount of money ? explain your answer
November 13, 2014
Brine from a first tank runs into a second tank at 2 gallons per minute and brine from the second tank runs into the first at 1 gallon per minute.Initially,there are 10 gallons of brine containing 20 lb of salt in the first tank and 10 gallons of fresh water in the second tank...
November 6, 2014
A man drops a rock off the side of a cliff, and hears it hit the bottom 2.8 seconds later. If the average speed of sound is 335 m/s, how high is the cliff? I have been able to figure out this much, but I don't know how to solve the problem with the data that I have been ...
October 24, 2014
A golf ball was launched at 35.0m/s at an angle of 35.0 degrees above the horizontal a) determine the horizontal and vertical components of the balls velocity b)how long was the ball in the air c) how far did the ball go d) what was the maximum height
October 15, 2014
A particle of mass 7.7 × 10-8 kg and charge +11 μC is traveling due east. It enters perpendicularly a magnetic field whose magnitude is 4.2 T. After entering the field, the particle completes one-half of a circle and exits the field traveling due west. How much time...
October 12, 2014
write an equation that represents the following situation. Let x= the number of adults. Your equatin should start with "1220=" and use x as the only variable.. The number of students attending the fall play was 150 more than the number of adults attending. A total of...
October 1, 2014
English (Checking please)
How are Eliezer and the Rabbis son who abandons his father on the way to Buchenwald similar? They do not respond when their fathers need them.<--------- They are unable to abandon their fathers. They regret their feelings of resentment toward their fathers. They grow...
May 21, 2014
English (Checking please)
According to the author, it is difficult for people to comprehend what when on at Auschwitz because the events are so terrible that readers have never experienced anything similar. <----- the events happened long ago and have been forgotten. the survivors and their families...
May 21, 2014
Can someone help me with a hint to solve this problem?? Thanks!!! "Consider an oligopolistic market with two firms. Each of them produces using a cost function given by c(q)=q2. The aggregate demand in the market is given by 1000−p. Suppose that, in order to ...
March 20, 2014
. A platform with boat weighs 10,000 N. Four cables are attached to the platform as shown; the edges of the platform are always a horizontal distance of 2 m from the pulleys. As the platform rises smoothly and evenly, the length L of the cables decreases and the angle θ ...
February 17, 2014
A piston is holding 125 mL of gases at a temperature of 300 K and a pressure of 2.39 atm. What is the volume of the gases if the temperature is increased to 500K and the pressure falls to 2.15 atm?
February 15, 2014
I got half of this problem wrong and I DO NOT know where and how to fix. I cannot use my calculator and have to show my work. Question: You have a 500 metre roll of fencing and a large field. You want to construct a rectangular playground area. a.) using optimization ...
December 18, 2013
A national opinion poll found that 44% of all American adults agree that parents should be given vouchers good for education at any public or private school of their choice. Suppose that in fact the population proportion who feel this way is p=0.44. A) Many opinion polls have ...
December 17, 2013
Find the amount of the principal on a loan at 6% interest for 274 days if the interest was $68.50, using the ordinary interest method. (Round to the nearest whole dollar amount)
November 3, 2013
What are three heirs of ROme after the fall of the Western Empire? I think I know two, which are...Byzantine and Islamic. But what is the last one?? or is my two answer right??
October 29, 2013
one more please!! a bike club wants to make license plates for the neighborhood bikes. each license plate has a letter followed by a digit. how many different license plates can be made??? explain please so i can understand how to find the anser THANKS!!!!
October 28, 2013
ben has 15 puzzles and 27 cds, when he takes a trip he likes to bring one puzzle and one cd as entertainment. how many trips can he take with a different puzzle and cd pair?? and please show how to solve it.....
October 28, 2013
Was craft guild back in the days same as inspector of today or apprenticeship??What I want to know is a Craft guilds are basically early versions of what that helps unify workers today?
October 24, 2013
How do i do this practice math problem? Julie Molony opened Julies Maids Catering Service on July 1, 2010. During July the company completed the following transactions: July 1 Invested $14,000 in common stocks in the business. 1 Purchased a delivery truck for $10,000, ...
October 17, 2013
Which group is most associated with the fall of the Western Roman empire? Was it Carthaginians, Gauls, Huns, or the Greeks?? I thought it was Egypt or Visigoths but my answer came back as wrong :(
October 1, 2013
When was the height of Egyptians, Athenians, Alexander's empire, and Roman Empire? I am having hard time finding the exact or round about year to these. I've found two so far, but I am sure if its right. please help so i can study for my test! thank you! This is what i...
October 1, 2013
ass 6 q6:Now, consider the case where N4 elements are marked instead of just one. If we run one iteration of Grover's algorithm and measure, what is the probability that we see a marked element? q7: Which of the following observables correspond to a standard basis ...
September 28, 2013