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Questions Asked on March 16, 2012

The Greek mathematician Eratosthenes (ca. 276-195 B.C.) measured the circumference of the earth from the following observations.
1. 2 answers
2. asked by Jessica
3. 8,569 views
Refer to the following equation: 4NH3 + 7O2= 4NO2 +6HO, How many moles of ammonia would be required to produce 11.9 mol of
1. 2 answers
2. asked by Jessica
3. 7,853 views
if 2/12 yards of wire cost 15 cents what will 20 yards cost
1. 2 answers
2. asked by Anonymous
3. 6,501 views
baseball is hit with a speed of 30.0 m/s at an angle of 50 It lands on the flat roof of a 10m tall nearby building, If the ball
1. 2 answers
2. asked by asem
3. 5,433 views
The New York Times cost $0.15 in 1970 and $0.75 in 2000. The averagewage in manufacturing was $3.23 per hour in 1970 and $14.32
1. 2 answers
2. asked by Alan
3. 3,971 views
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.230 M HClO (aq) with 0.230 M KOH (aq). The
1. 1 answer
2. asked by Rosi
3. 3,847 views
which pair(s) of liquids will be miscible ?H2O AND CH3CH2CH2CH2CH3(PENTANE) C6H6 (BENZENE) AND CCl4(CHLOROFORM) C2H5OH (ETHANOL)
1. 1 answer
2. asked by kim
3. 3,831 views
(a) A polygon with n sides has a total of 1/p*n(n-q) diagonals, where p and q are integers.(i) find thhe value of p and q (ii)
1. 4 answers
2. asked by preeti
3. 3,095 views
a 25.0kg box is released from rest on a rough inclined plane tilted at an angle of 33.5 degrees to the horizontal. the
1. 2 answers
2. asked by Anonymous
3. 2,416 views
Solve the following system of inequalities by graphing.5x - 4y ≥ -20 3x - 2y ≤ -8 y ≥ -3 I need help, like a website or
1. 2 answers
2. asked by Carson Joy
3. 2,290 views
In Fig. 11-35, a solid brass ball of mass m will roll smoothly along a loop-the-loop track when released from rest along the
1. 1 answer
2. asked by M
3. 2,022 views
which solution has highest freezing point if all are at the same molalitycalcium chloride sodium nitrate potassium sulfate
1. 1 answer
2. asked by kim
3. 1,998 views
A 15.00 g sample of an ionic compound NaA, where A- is the anion of a weak acid, was dissolved in enough water to make 100.0 mL
1. 1 answer
2. asked by Ashley
3. 1,762 views
sketch the region bounded by the graphs of f(y)=(y/Squareroot of(16-y^2)), g(y)=0, y=3 and find the area of the region.
1. 1 answer
2. asked by Kim
3. 1,697 views
What is Tan’s strategy behind including a direct quotation from her mother (paragraph 6) ratherthan paraphrasing what she
1. 2 answers
2. asked by Needhelp500
3. 1,611 views
A boat travels 45 miles upstream in 5h. The boat travels the same distance downstream in 3hr. What is the rate of the boat in
1. 1 answer
2. asked by Analica
3. 1,506 views
An aqueous solution that 2.10 M in AgNO3 is slowly added from a buret to an aqueous solution that is 1.20×10^−2 M in Cl- and
1. 3 answers
2. asked by Ryan
3. 1,353 views
10.51 A statistics professor compared the scores of her morning class and afternoon class on the samequiz. The 42 morning
1. 1 answer
2. asked by cindy
3. 1,341 views
What are the next two numbers in this pattern?72 86 75 89 80 ___ _____
1. 2 answers
2. asked by tj
3. 1,341 views
a stationary car is hit from behind by another car travelling at 40km per hr. After collision both cars remain locked together.
1. 0 answers
2. asked by dmkp
3. 1,323 views
The mass of a radioactive substance follows an exponential decay model, with a decay rate of 5% per day. A sample of this
1. 1 answer
2. asked by Kim
3. 1,320 views
If you want to be 95% confident of estimating the population proportion to within a sampling error of and there is historical
1. 1 answer
2. asked by Johniece McCoy
3. 1,293 views
A uniform solid sphere rolls down an incline without slipping. If the linear acceleration of the center of mass of the sphere is
1. 0 answers
2. asked by Sean
3. 1,271 views
Calculate the pH after 0.011 mol NaOH is added to 1.00 L of each of the four solutions.a) 0.100 M propanoic acid (HC3H5O2, Ka=
1. 1 answer
2. asked by Mike
3. 1,258 views
Write using set builder notation.Show work....Solve..-2(10x-9)-17x<(6-x)
1. 2 answers
2. asked by sherry
3. 1,168 views
Any situation that involves learninga)requires some relatively permanent change to occur b)requires a great deal of effort.
1. 1 answer
2. asked by love4965
3. 1,158 views
A law firm has thirteen senior and nine junior partners. A committee of 6 partners is selected at random to represent the firm
1. 2 answers
2. asked by Amanda
3. 1,126 views
a.) Given that f(3)=5 and f'(x)=x/((x^3)+3), find the linear approximation of f(x) at x=3.b.)If the linear approximation is used
1. 1 answer
2. asked by Devin
3. 1,112 views
bus tickets cost $3 for an adult and $2 for a child. there are 'a' adults nd 'c' children on a bus. the total number of people
1. 1 answer
2. asked by preeti
3. 1,094 views
An exercise bicycle's flywheel is 30cm in diameter and 2.5 cm thick and is constructed from steel (density=7850 kg m3) its
1. 1 answer
2. asked by dmkp
3. 1,067 views
30% of the tickets sold by a movie theater for the Friday night show were children's tickets at $4 each. The rest of the tickets
1. 1 answer
2. asked by john
3. 1,056 views
Without consultation, each of five organizations announces a one-day convention to be held during July. Find the probability
1. 1 answer
2. asked by Amanda
3. 1,048 views
Use Hess's law to calculate the enthalpy change for the reaction:3C(s) + 3H2(g) ¡æ C3H6(g) Given the following thermochemical
1. 1 answer
2. asked by Hailee
3. 1,022 views
Figure a is a partial graph of the position function x(t) for a simple harmonic oscillator with an angular frequency of 1.75
1. 0 answers
2. asked by Anna
3. 1,008 views
The body can use glycogen as an energy source when aerobic exercise lasts
1. 1 answer
2. asked by Delrick
3. 1,006 views
How to find dimensions of a field when given length of fencing and area?Hi I really appreciate your help on this. The question
1. 3 answers
2. asked by Bernadette
3. 1,001 views
A baggage handler throws a 16.0kg suitcase horizontally along the floor of an airplane luggage compartment with an initial speed
1. 0 answers
2. asked by Jony
3. 972 views
a ball of mass 200 g is thrown vertically upwards with a velocity of 20ms-1 ignoring air resistance.a) calculate the kinetic
1. 1 answer
2. asked by dmkp
3. 966 views
what is the story of Judaism?
1. 1 answer
2. asked by Markeis
3. 960 views
The predetermined overhead rate for manufacturing overhead for 2008 is $4.00 per direct labor hour. Employees are expected to
1. 1 answer
2. asked by jessica
3. 940 views
The system shown below consists of a block of mass M = 4.4 kg resting on a frictionless horizontal ledge. This block is attached
1. 0 answers
2. asked by Nick
3. 925 views
Consider the 665 N weight held by two cablesThe left-hand cable had tension T2 and makes an angle of 43◦ with the ceiling. The
1. 3 answers
2. asked by Ashley
3. 908 views
A long string is wrapped around a 6.2cm diameter cylinder, initially at rest, that is free to rotate on an axle. The string is
1. 1 answer
2. asked by Krista
3. 903 views
The 3.80 kg cube in Fig. 15-45 has edge lengths d = 5.50 cm and is mounted on an axle through its center. A spring (k = 1300
1. 0 answers
2. asked by Anna
3. 871 views
A saturated Ni(OH)_2_ can be prepared by dissolving 0.239 mg of Ni(OH)_2_ in water to make 500.0 mL of solution. What is the Ksp
1. 1 answer
2. asked by Shane
3. 839 views
Hello, I would greatly appreciate your input.I just need some reassurance that I'm going about this question the right way. I am
1. 2 answers
2. asked by mary
3. 818 views
Calculate the number of grams of h2c2o4.2h2o needed to prepare exactly 250mL of a 0.200 N solution of the acid?
1. 2 answers
2. asked by Jess
3. 814 views
evaluate the function f(r)= sqrt25-r-6 at the given values of independent variables f(16), f(-x), f(25-2x) and simplify
1. 1 answer
2. asked by Melanie
3. 779 views
A physical pendulum consists of 3.8 m long sticks joined together as shown in Fig. 15-41. What is the pendulum's period of
1. 0 answers
2. asked by Anna
3. 778 views
The 3.80 kg cube in Fig. 15-45 has edge lengths d = 5.50 cm and is mounted on an axle through its center. A spring (k = 1300
1. 1 answer
2. asked by Anna
3. 765 views
A 45.7-g golf ball is driven from the tee with an initial speed of 46.0 m/s and rises to a height of 25.9 m. (a) Neglect air
1. 1 answer
2. asked by Angela
3. 751 views
a stationary car is hit from behind by another car travelling at 40km per hr. After collision both cars remain locked together.
1. 0 answers
2. asked by dmkp
3. 742 views
In the following regression, X = total assets ($ billions), Y = total revenue ($ billions), and n = 64large banks. (a) Write the
1. 0 answers
2. asked by ronald
3. 736 views
Imagine someone asks you what you have learned in your logic class and what you found to be the most useful information you
1. 5 answers
2. asked by Ashley
3. 736 views
A 3kg. package slide down a smooth 30 degrees incline and land on a 10 kg. cart that is at rest.Determine the velocity of the
1. 2 answers
2. asked by Jerlyn
3. 734 views
A pole-vaulter of mass 59.9 kg vaults to a height of 5.9 m before dropping to thick padding placed below to cushion her fall.(a)
1. 4 answers
2. asked by Priyanka
3. 725 views
How do Plate tectonics affect the Atmosphere, Hydrosphere, Geosphere, and Biosphere? Thanks SO much in advance!:D
1. 1 answer
2. asked by Erika
3. 721 views
A 42-kg girl is bouncing on a trampoline. During a certain interval after leaving the surface of the trampoline, her kinetic
1. 0 answers
2. asked by Angela
3. 717 views
I have removed your post because you included personally identifying information, which is not a safe thing to do online.I've
1. 1 answer
2. asked by Writeacher
3. 705 views
Help please!How many moles of NaOH must be added to 1.0 L of 3.0 M HC2H3O2 to produce a solution buffered at each pH? 1) pH=
1. 1 answer
2. asked by Mackenzie
3. 700 views
What is the value of Kf for the formation of the ammine M(NH3)2+ ? Assume the concentration of M(NH3)n+ = 0.0020 MThe data were
1. 0 answers
2. asked by Katie
3. 686 views
it has been reported that 40% of all internet users have been attacked by viruses. If 20 people are randomly surveyed, find the
1. 1 answer
2. asked by Jane
3. 679 views
1. What hemisphere, the Northern or Southern, has the most land? The Northern2. What gulf is located south of the intersection
1. 1 answer
2. asked by Reed
3. 679 views
A physical pendulum consists of 3.8 m long sticks joined together as shown in Fig. 15-41. What is the pendulum's period of
1. 0 answers
2. asked by Anna
3. 665 views
The equilibrium constant Kc for the following reaction is equal to 0.20 at 250°C. Calculate the equilibrium constant Kp for the
1. 1 answer
2. asked by David
3. 657 views
(a) Plot the data on lightning deaths. (b) Describe the trend (if any) and discuss possible causes.(c) Fit an exponential trend
1. 0 answers
2. asked by ronald
3. 657 views
(5y+5)/(y^2^+7y+6)*(y^2^+4y-12)/(y^2^+3y-10)Simplify Leave answer in factored form. Keep () around binomial factors.
1. 1 answer
2. asked by Nancy
3. 652 views
A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 28.2 ° with respect to the
1. 1 answer
2. asked by Angela
3. 644 views
A roller coaster reaches the top of the steepest hill with a speed of 3.0 km/h . It then descends the hill, which is at an
1. 0 answers
2. asked by KRIS
3. 644 views
A factory produces fuses, which are packaged in boxes of 26. Eight fuses are selected at random from each box for inspection.
1. 1 answer
2. asked by Amanda
3. 638 views
what is one important difference between the koreas and japan1)korea has may mountains 2)japan is not crowded but korea is 3)the
1. 1 answer
2. asked by sierra
3. 638 views
a.) Given that f(3)=5 and f'(x)=x/((x^3)+3), find the linear approximation of f(x) at x=3.b.)If the linear approximation is used
1. 1 answer
2. asked by Devin
3. 630 views
A player kicks the football from the ground with a velocity of of 30m/s at 45 degree angle. The time take to reach maximum
1. 1 answer
2. asked by Anonymous
3. 627 views
Find the locus of points equidistant from two straight lines y-5=0 and y-3=0
1. 2 answers
2. asked by Enyongama
3. 627 views
A buffer containing 0.2832 M of acid, HA, and 0.1504 M of its conjugate base, A−, has a pH of 2.36. What is the pH after
1. 2 answers
2. asked by Tracey
3. 625 views
The solubility of Mg(OH)2 in a particular buffer solution is 0.63g/L .What must be the pH of the buffer solution?I am unsure of
1. 1 answer
2. asked by Arianna
3. 623 views
What is the concentration of NaOH?using this solution (0.04756 M (i think its stand for Molarity) H2SO4) what is the
1. 1 answer
2. asked by star
3. 617 views
what is the subject in the following sentece... these past three days have been quiet and enjoyable
1. 3 answers
2. asked by shayne
3. 614 views
Hello, please help me.There is a question where I have to optimize the area of a field that is being fence in like this: [|]
1. 1 answer
2. asked by mary
3. 614 views
Suppose that people's heights (in centimeters) are normally distributed, with a mean of 165 and a standard deviation of 6. We
1. 1 answer
2. asked by Shelly
3. 586 views
I've changed my persuasive topic from Water cons. to Poverty in Kalamazoo. Do you know of any organizations that help the
1. 1 answer
2. asked by help
3. 585 views
Which is not a subunit of the Department of Health and Human Services?
1. 2 answers
2. asked by Derrick
3. 582 views
What is the molarity of 100 ml of ethanol dissolved in 1.5 liters of water? Ethanol has a specific gravity of 0.789, and its
1. 1 answer
2. asked by Louise
3. 576 views
the average temp of the lake is 64.2 degrees and the standard deviation is 3.2. Assume the cariable is normally distributed. For
1. 1 answer
2. asked by carson
3. 574 views
Cost AllocationIt started with a letter Statendam, November 5, 2001 To: Henk Jacobs, director finance department From: Bob
1. 0 answers
2. asked by Math dummy
3. 573 views
a) Calc. PH of 0.010 M HF and 0.030 M KFe) calc. PH Zn(OH)2 in wAter
1. 1 answer
2. asked by ALISON
3. 560 views
Working on a worksheet regarding triads and figured bass. the directions say Observe the key sig. and it is in bass clef the key
1. 1 answer
2. asked by Vanessa
3. 559 views
Kennys lawn is 30 feet wide and 30 feet long. It takes him 1 hour to mow the lawn. If kenny mows at the same rate, about how
1. 4 answers
2. asked by chine
3. 554 views
1.CALCULATE pH of 1.0 L 0.010 M ascetic acid and 0.50 L 0.010 M NaOH.2. Calculate pH of 1.0 L 0.010 M NaOH and 0.500 L 0.010M
1. 1 answer
2. asked by ALISON
3. 551 views
which of the following news sources typically provides the LEAST depth while covering topics?a) television b) magazines c) radio
1. 0 answers
2. asked by tina
3. 547 views
If 59.0 mL of 0.40 M HI is mixed with 100. mL of 0.10 M KOH what is the resulting pH?
1. 2 answers
2. asked by Tracey
3. 545 views
An expert witness in a case of alleged racial discrimination in a state university school of nursingintroduced a regression of
1. 0 answers
2. asked by ronald
3. 540 views
Hello, please help me :)A question asked that I find all relative extrema of a function f(x)= x + 1/x. I'm a bit confused with
1. 0 answers
2. asked by mary
3. 540 views
Discuss in 200 to 300 words, each of the four financial statements. Explain the different components of the statements as well
1. 0 answers
2. asked by Mary
3. 539 views
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. The orbital speeds of the
1. 0 answers
2. asked by Angela
3. 537 views
Hi,I've been trying to solve this chemical equation for the last 30 minutes and am only confusing myself. I am wondering if the
1. 3 answers
2. asked by Julie
3. 535 views
Please help me to unscramble these 40 letters into 2 sentences that has 12 words. A A A A E E E E E E E I I I I O O U U C D F J
1. 0 answers
2. asked by Mike
3. 533 views
:A baseball is hit with a speed of 30.0 at an angle of 50.0. It lands on the flat roof of a 10.0 -tall nearby building
1. 1 answer
2. asked by WAEL
3. 532 views
For no apparent reason, a poodle is running counter-clockwise at a constant speed of 3.00 m/s in a circle with radius 2.9. Let
1. 1 answer
2. asked by Krista
3. 525 views
Let p represent the statement, "Jim plays football", and let q represent "Michael plays basketball". Convert the compound
1. 1 answer
2. asked by Anonymous
3. 525 views

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