Total # Posts: 1,804
Please help me... I have no idea where to begin...A tone of 4000 Hz is being played on a tuning fork. You run toward the tuning fork at 5 m/s. What frequency do you hear? Take the speed of sound to be 343 m/s.
July 25, 2016
Economics - PLEASE HELP
Homework Help: Economics PLEASE CHECK MY ANSWERS! 1. The MAIN advantage to a corporation is.. A. Ease of entry B. Limited liability for the owners C. Dividends all go to one person D. Owners share managerial duty E. All of the above (My answer: E) 2. The MAIN advantage to a ...
July 13, 2016
1. Suppose that you are taking a quiz of 6 multiple- choice questions (the instructor chose the questions randomly), each question having 6 possible responses. You did not study at all for the quiz and will randomly guess the correct response for each question. The random ...
June 27, 2016
A 0.18 g sample of unknown was placed in a flask and dissolved in 125 mL of deionized water. A solution of HCl (0.13 M) was used to titrate the sample, and 16 mL was required to reach the endpoint. What is the formula weight of the unknown?
April 24, 2016
Please help ASAPPP!!!! I have no idea how to even start on this! f(x)=9x^3+2x^2-5x+4 and g(x)=5x^3-7x+4. What is f(x)-g(x)? Show all of your steps and wrote your final answer in factored form. If someone could help me work through this problem that would be great!
April 20, 2016
Two electrically-charges spheres are suspended from insulated threads a certain distance from each other. There is a certain amount of electrostatic force between them. Describe specifically (not just increase or decrease) what happens to this force in each of the scenarios ...
April 9, 2016
Company A charges $5 plus $0.10 per kilometre, company B charges $1 plus $.50 per km how far could you go and still pay less then company A? you need to use a inequality is what the teacher said
April 3, 2016
please show me how to do this... A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true. Show your work.Sn: 12 + 42 + 72 + . . . + (3n - 2)2 = n(6n^2-3n-1)/2 Also, please show ...
March 14, 2016
at certain altitude in the upper atmosphere, the temperature is estimated to be -100 degree celsius and the density just 10^-9 that of the earth's atmosphere at STP. Assuming a uniform atmosphere at STP. Assuming a uniform atmospheric composition, what is the pressure, in ...
March 14, 2016
Kane Manufacturing has a division that produces two models of hibachis, model A and model B. To produce each model A hibachi requires 3 lb of cast iron and 6 min of labor. To produce each model B hibachi requires 4 lb of cast iron and 3 min of labor. The profit for each model ...
March 1, 2016
Water is leaking out of an inverted conical tank at a rate of 13500.0 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 12.0 meters and the diameter at the top is 5.5 meters. If the water level is rising...
February 26, 2016
Solve each system. x-4y-6z=-34 -7x+5y-7z=-24 z=5x-7y+18 These are my answers below but I know that they are wrong: x=-3894 y=-112852 z=-107,509,144 I have tried to solve this system probably 10 times, and still not getting an answer that checks back into the original equation...
January 29, 2016
Using your average value for Kc (6.92x10^2) and the concentrations provided for the reactants (0.00111mol/L for both), determine the absorbance expected when a 16.00mL of Fe3+ is reacted with 10.00ml of SCN and measured in a 1.00cm cuvette.
January 27, 2016
A=Lw P=2L+2w 400=2L+2w 400-2L=2w -2L=-400+2w L=200-w A=(200-w)(w) A=200w-w^2 A=-w^2+200 -b ----- = 2a -200 -------= 2(-1) -200 ------- = -2 100 Y=400-100 Y=300 So the. Would the length for each side of the rectangle be 50 and the width be 150?
January 12, 2016
You have 400 feet of fencing to enclose a rectangular plot. Find the length and width of the plot that will maximize the area. What is the largest area that can be enclosed? I'm not sure how to start. We haven't learned this yet in class.
January 12, 2016
The rodent population in a city is currently estimated at 70,000 and is growing according to the Malthusian model. If it is expected to double every 3 years, when will the population reach one million? (Round your answer to one decimal place.)
November 12, 2015
A ship sets sail from Rotterdam, The Netherlands, heading due north at 5.00 m/s relative to the water. The local ocean current is 1.54 m/s in a direction 40° north of east. What is the velocity of the ship relative to the earth?
October 1, 2015
A basketball player shoots a free throw at a 50 degree angle. Assume the ball is released at a height of 1.8 meters, the hoop is 3 meters off of the floor and 4.6 meters away from the shooter. With what velocity should the player release the ball to hit nothing but net? I have...
September 27, 2015
A basketball player shoots a free throw at a 50 degree angle. Assume the ball is released at a height of 1.8 meters, the hoop is 3 meters off of the floor and 4.6 meters away from the shooter. With what velocity should the player release the ball to hit nothing but net?
September 27, 2015
english help please!!
I think the reason that she never read the novel is because the teacher gives you only one chapter at first so that you can try to guess the theme of the novel.
September 23, 2015
Strong Monarchs and large nation-states in the 1400 helped to? A.increase interest in exploration B.overthrow the bristish empire C.decrease the demand for spices D.make all Europeans wealthy I think its b but please help
September 2, 2015
Alexis bought x boxes of cereal for $3 each, including tax, and paid with a $20 bill. Which expression represents the total amount of change she should receive. Whats the answer?
August 25, 2015
Chemistry - Equilibrium
(h) If a catalyst was added to the reaction, which quantities would change? (Select all that apply.) - the potential energy of the products - the potential energy of the reactants - the potential energy of the activated complex -the activation energy for the reverse reaction...
May 17, 2015
Prove the following identities: 13. tan(x) + sec(x) = (cos(x)) / (1-sin(x)) *Sorry for any confusing parenthesis.* My work: I simplified the left side to a. ((sinx) / (cosx)) + (1 / cosx) , then b. (sinx + 1) / cosx = (cos(x)) / (1-sin(x)) I don't know how to verify the ...
May 12, 2015
Physics. URGENT Help Please
What is the separation of colors in a rainbow produced by? (Points : 1) different diffraction for different wavelengths different interference for different wavelengths <--- different refraction for different wavelengths difference in total internal reflection for ...
April 2, 2015
The Economic Policy Institute periodically issues reports on wages of entry-level workers. The institute reported that entry-level wages for male college graduates were $21.68 per hour and for female college graduates were $18.80 per hour in 2011 (Economic Policy Institute ...
March 23, 2015
I know that I'm using the Law of Cosines, but I'm confused on how to solve. I have to also round my answers to the nearest tenth for degrees and to the nearest hundredth for sides. Given: A= 55 degrees b=3 c=10 Find: a= B= C=
February 25, 2015
Can someone check to see if I'm right? Thanks! Question: Determine if v and w are equal If v = Ray AB and w = Ray CD, where A (23, 11), B (10, 15), C (13, 15), and D (0, 11. (True or False) My answer: False
February 25, 2015
Which of the following increased south Carolina's desire to secede from the union? A.John Brown's raid on Harpers Ferry*** B.Brooks' response to summer's speech C.the proslavery constitution submitted by Kansas D.the decline of the Whig party
February 4, 2015
Art check please
1. Rust on an artifact is an example of (1 point) chemical decomposition ******* chemical preservation physical decomposition physical preservation 2. What preservation controversy developed over the years relating to Michelangelos paintings in the Sistine ...
January 23, 2015
In these lines from concrete mixers which context word provides a synonym for urban concrete mixers are urban elephants, Their trunks are raising a city a)Concrete b)Elephants ******THIS ONE**** c)raising d)city
January 22, 2015