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Questions Asked on March 13, 2011

IQ test scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the x- score that corresponds to
1. 4 answers
2. asked by chalulu
3. 14,475 views
A researcher at a major hospital wishes to estimate the proportion of the adult population of the U.S. that has high blood
1. 2 answers
2. asked by chalulu
3. 10,465 views
Assume that male and female births are equally likely and that the birth of any child does not affect the probability of the
1. 3 answers
2. asked by chalulu
3. 7,008 views
What are the first three harmonics of a note produced on a 31.0 cm long violin string if waves on this string have a speed of
1. 1 answer
2. asked by unknown
3. 5,992 views
a)Find a Cartesian equation relating and corresponding to the parametric equations: x=2sin(3t), y=9cos(3t). Write your answer in
1. 2 answers
2. asked by Allison
3. 5,232 views
A car travels between the 100 meter and 250 meter highway markers in 10 second. The average speed of the car during this
1. 2 answers
2. asked by Sarah
3. 4,940 views
Calculate the standared enthalpy of formation of solid Mg(OH)2 given the following data:2Mg(s) + O29(g) →2MgO(s) ∆H =
1. 1 answer
2. asked by melinda
3. 4,102 views
A plane flies horizontally with a speed Of 600km/h at an altitude of 10km and pasess directly over th town of quinton .find the
1. 6 answers
2. asked by mehak
3. 4,039 views
A stereo speaker represented by P in Figure 13-22 emits sound waves with a power output of 130.0 W. What is the intensity of the
1. 1 answer
2. asked by unknown
3. 3,347 views
4. What is the electric potential at the surface of a gold atom’s nucleus, which is assumed to be spherical? The radius of a
1. 3 answers
2. asked by lol
3. 2,688 views
A paper cup has the shape of a cone with height 8cm and radius 3cm at the top. Water is being poured into the cup at the rate of
1. 2 answers
2. asked by Mehak
3. 2,418 views
A test consists of 90 mulitiple choice questions, each with five possible answers, only one of which is correct. Find the mean
1. 1 answer
2. asked by chalulu
3. 2,041 views
Approximately how much water should be added to 10.0 mL of 12.0 M HCl so that it has the same pH as .90 M acetic acid(Ka= 1.8 x
1. 6 answers
2. asked by Sue
3. 1,954 views
What point was Madison making about the system of government created by the proposed U.S. Constitution?
1. 2 answers
2. asked by S...
3. 1,823 views
4 Fe(s) + 3 O2(g) 2 Fe2O3(s) ΔH = -1652 kJHow much heat is released when 3.82 mol iron is reacted with excess O2?
1. 2 answers
2. asked by suzy
3. 1,742 views
At 20 C (approximately room temperature) the average velocity of N2 molecules in air is 1050 mph.What is the velocity of a
1. 2 answers
2. asked by melinda
3. 1,699 views
Which are the keystone species from the chaparral biome
1. 6 answers
2. asked by Anna
3. 1,672 views
prescott is an old hand in the print shop. he insists that there's only one dependable kind of process for printing a
1. 3 answers
2. asked by alisha s.
3. 1,669 views
1. How far apart must two protons be if the electrical force of repulsion acting on either one is equal to its weight?
1. 1 answer
2. asked by okay
3. 1,624 views
Find the vector v with the given magnitude and the same direction as u. ||v||=7, u=3i+4j
1. 1 answer
2. asked by Christine
3. 1,618 views
A farmer has 165 feet of fencing material in which to enclose a rectangle area. He wants the length x to be greater than 50 feet
1. 2 answers
2. asked by Casey
3. 1,581 views
I have a question about the short story "Son" by John Updike. I have research this and read it but find it very confusing-I have
1. 12 answers
2. asked by Rachel
3. 1,539 views
Three resistors (14.4 Ω, 21.7 Ω, 14.1 Ω) are connected in parallel across 98 V. What is the total resistance for this
1. 4 answers
2. asked by Joan
3. 1,504 views
In a city with an air-pollution problem, a bus has no combustion engine. It runs on energy drawn from a large, rapidly rotating
1. 1 answer
2. asked by Brent
3. 1,467 views
write a situation that could be modeled by the equation b=100-s.
1. 1 answer
2. asked by stu
3. 1,448 views
an isosceles triangle has a vertex at the origin. Determine the area of the largest such triangle that is bound by the function
1. 1 answer
2. asked by Tomas
3. 1,379 views
I have a question about the short story "Son" by John Updike.Is "Son told in a.order from the contemporary father and his
1. 0 answers
2. asked by Rachel B.
3. 1,366 views
Can you answer these questions:1. Under the Articles of Confederation, the greatest amount of power was in the hands of the a)
1. 3 answers
2. asked by S...
3. 1,354 views
A boat is pulled into a dock by a rope attached to the bow of the boat an passing through the pulley on the deck that is 1m high
1. 2 answers
2. asked by Mehak
3. 1,321 views
Green light has a wavelength of 4.96 10-7 m and travels through the air at a speed of 3.00 108 m/s. Calculate the period of
1. 1 answer
2. asked by Anonymous
3. 1,303 views
At 1473K the equilibrium constant for the reaction H2(g) + Cl2(g) <--------> 2HCl(g)Kc = 2.5*10^4. What would be the equilibrium
1. 1 answer
2. asked by Jude
3. 1,299 views
The digits 0, 1, and 8 look much the same if rotated 180 degrees on the page (turnedupside down). Also, the digit 6 looks much
1. 15 answers
2. asked by Anonymous
3. 1,284 views
Key difference/s between the 1929 Crash and previous stockmarket crashes was/wereA) The impact of the investor's pools B) That
1. 1 answer
2. asked by Jake
3. 1,277 views
55g of CF2Cl2, how many grams of Cl do I have? How do I solve this kind of problem?
1. 1 answer
2. asked by Bill
3. 1,276 views
12. If alpha particles are caused to fall through a potential difference of 1500 volts, determine their final speed if they were
1. 2 answers
2. asked by ike
3. 1,228 views
An electrical motor is designed to operate on 34 V at 1.3 A. How much resistance must be connected in series to this motor, if
1. 1 answer
2. asked by Joan
3. 1,200 views
Heterogenous equilibrium of ammoniumbisulfide. Ammonium bisulfide NH4HS forms ammonia NH3 and hydrogen sulfide H2S through the
1. 1 answer
2. asked by gin
3. 1,199 views
Find the average value of the function i=15(1-e to the power of -1/2 t) from t=0 and t=4?A.7.5(1+e^-2)<< my answer B.7.5(2+e^-2)
1. 2 answers
2. asked by anon
3. 1,067 views
A 5.1 kg block slides down an inclined plane that makes an angle of 26 degrees with the horizontal.Starting from rest, the block
1. 2 answers
2. asked by Jackson
3. 1,062 views
Can you check these sentences for me, please? I really need to know if they are possible because I need to meet some American
1. 1 answer
2. asked by Mike
3. 1,036 views
A classic experiment in equilibrium studies dating from 1862 involved the reaction in solution of ethanol and acetic acid to
1. 3 answers
2. asked by gs
3. 1,029 views
A 13 g bullet traveling 235 m/s penetrates a 2.0 kg block of wood and emerges going 171 m/s. If the block is stationary on a
1. 1 answer
2. asked by Anup
3. 1,024 views
A 1.94 kg solid sphere (radius = 0.105 m) is released from rest at the top of a ramp and allowed to roll without slipping. The
1. 2 answers
2. asked by Megan
3. 1,017 views
Why did the Maritimes not favour Confederation?The only information I know is that they saw themselves as mature, independent
1. 3 answers
2. asked by Sara
3. 1,013 views
in the titration between Na2CO3 and HCl...1) at the first end point what reaction is stoiciometrically complete? 2)At the start
1. 2 answers
2. asked by zoe
3. 1,004 views
Name 3 things a marketing department of a firm does?
1. 5 answers
2. asked by Lewis
3. 997 views
Calculate the average speed of a water molecule (with a mass of 3.0e-26 kg) on the hot side of Mercury (710 Kelvin).
1. 1 answer
2. asked by james
3. 988 views
A block slides down an incline. As it moves from point A to point B, which are 5.0 m apart, a force F acts on the block, with
1. 0 answers
2. asked by John
3. 946 views
AssignmentPart I: A system of equations can result in 3 possibilities: consistent, inconsistent, and dependent. Discuss each of
1. 2 answers
2. asked by Joe
3. 939 views
How many moles of nitrogen are in 5.0×10−2 mole of quinine?
1. 2 answers
2. asked by Jen
3. 921 views
After you pick up a spare, your bowling ball rolls without slipping back toward the ball rack with a linear speed of v = 3.41
1. 0 answers
2. asked by Megan
3. 904 views
Can you take a look and tell me what you thing? ThanksReview the passage below, which contains 20 errors. Identify these errors
1. 1 answer
2. asked by Vern
3. 884 views
I forgot to include the other sonnet (N. 116). I find it hard to rephrase the last couplet.1)Sonnets 116 is about love in its
1. 2 answers
2. asked by Mike
3. 868 views
In comparing an oak tree with a maple tree, you can correctly say thatA. oak is often used to make ships, while maple is often
1. 2 answers
2. asked by sof
3. 857 views
You are standing 14 feet from the edge of a cylindrical water tank and 26 feet from a point of tangency. The tank is 10 feet
1. 1 answer
2. asked by Sarah
3. 842 views
Each of the following sentences has one grammatical error. The errors are in one of the following four categories:
1. 1 answer
2. asked by Anonymous
3. 826 views
There are 150 grams of water in a beaker.If the water freezes,what is the massof the ice?
1. 0 answers
2. asked by elsie velasquez
3. 810 views
1st grade math worksheet says Write some names for 12, what does this mean?
1. 6 answers
2. asked by Susan
3. 810 views
A weight of 4.33 N is suspended by the string fasten at its upper end. A horizontal force is applied to the weight so that the
1. 1 answer
2. asked by Muazzif
3. 803 views
If a temperature increase from 19.0 degrees C to 36.0 degrees C triples the rate constant for a reaction, what is the value of
1. 1 answer
2. asked by kristen
3. 800 views
A biologist measured the amount of DNA in several single diploid cells taken from a culture. He knew that these cells could
1. 0 answers
2. asked by Anonymous
3. 797 views
An observer stands 43.0 m behind a marksmen practicing at a rifle range. The marksman fires the rifle horizontally which gives
1. 1 answer
2. asked by Steph
3. 796 views
Hello!Why don't we say possessive pronouns in English for the following words: my, your, his, her, its, our, your, their. Why do
1. 2 answers
2. asked by Mark
3. 780 views
n one experiment, a mixture of 1.000 mol acetic acid and 0.5000 mol ethanol is brought to equilibrium. A sample containing
1. 1 answer
2. asked by gss
3. 775 views
1...At what temp. of 0^C steel rod and copper rod have length of 800.1 & 99.9 respectively. At what temp. will the 2 rods have
1. 0 answers
2. asked by EM
3. 765 views
George, the owner of a car wash is trying to decide on the number of people to employ basedon the following short–run
1. 0 answers
2. asked by Soanz
3. 755 views
what would be your monthly car payment on a $15000 4 year loan @ 10%. Payments are made at the end of each month
1. 2 answers
2. asked by claudia
3. 754 views
I forgot how to look for the asymptote from an equation.. can someone please help me out?example: y= x/(x+1) what's the
1. 1 answer
2. asked by Amanda E.
3. 754 views
A pion has rest energy 135MeV. It decays into two gamma rays that travel at the speed of light. A pionmoving through the lab
1. 0 answers
2. asked by Pardis
3. 747 views
Find the centroid of the area bonded by the parabola y =4-x^2 and the x-axis?A.(0,1.6) <<<< correct? B.(0,1.7) C.(0,1.8)
1. 1 answer
2. asked by anon
3. 714 views
A 2.4 Kg object moving to the right at 0.8c collides with a 3.2 kg object moving to left at 0.6c. They sticktogether. Find the
1. 1 answer
2. asked by Bob
3. 712 views
Find the area under one arch of a cycloid described by the parametric equations x=3(2theta -sin2theta) & y=3(1-cos2theta)use 0
1. 1 answer
2. asked by anon
3. 711 views
I have the first part done with either Marriott Intl or southwest airlines it is the second and third parts i am stuck on here
1. 0 answers
2. asked by Tracy
3. 706 views
A plane flies horizontally with a speed Of 600km/h at an altitude of 10km and pasess directly over th town of quinton .find the
1. 1 answer
2. asked by Mehak
3. 704 views
In a random sample of 400 electrical components,100 are found to be defective.if the hypothesis is that 20% of the components
1. 1 answer
2. asked by sharon
3. 704 views
Earth's magnetic field induces some degree of magnetism in most of the iron objects around you. With a compass you can see that
1. 0 answers
2. asked by Jessica
3. 695 views
when we are synthesis n-butyl bromide what impurities we can expect in the crude product?and how would these impurities react
1. 1 answer
2. asked by sashika
3. 683 views
a common repetitive technique for oving new information from short-term memory to long-term memory is called
1. 2 answers
2. asked by alisha s.
3. 683 views
A buffer is prepared by adding 0.97 L of 1.1 M HCl to 805 mL of 1.7 M NaHCOO. What is the pH of this buffer? [Ka(HCOOH) = 1.7 ×
1. 6 answers
2. asked by Anonymous
3. 678 views
3. What is the magnitude of the electric field strength E such that an electron, when placed in the field, would experience an
1. 1 answer
2. asked by lol
3. 668 views
Ten kilograms of hydrogen gas are mixed with 355 kg of chlorine in a 0.50 mm^3 drum. The two gases react to produce hydrogen
1. 1 answer
2. asked by Maria
3. 667 views
I am doing a project on Fascinating Etymology Stories and was wondering if you guys know of any good websites with interesting
1. 2 answers
2. asked by Abby
3. 664 views
a) An ethylene glycol solution contains 21.1 g of ethylene glycol in 86.0 ml of water. compute the freezing point of the
1. 4 answers
2. asked by Emilene
3. 660 views
1.evaluate (integral sign)x cos 3x dxA.1/6 x^2 sin 3x + C B.1/3 x sin 3x -1/2 sin 3x +C C.1/3 x sin 3x +1/9 cos 3x +C << my
1. 2 answers
2. asked by anon
3. 652 views
You are randomly selecting 10 college students for an experiment. The population in which you are sampling has 78% of the
1. 1 answer
2. asked by john
3. 642 views
The density of water at 17 degrees celcius is 0.998774g/mL and at 18 degrees celcius it is 0.998595 g/mL. Calculate the density
1. 1 answer
2. asked by Renee
3. 634 views
A pion has rest energy 135MeV. It decays into two gamma rays that travel at the speed of light. A pionmoving through the lab
1. 0 answers
2. asked by mike
3. 630 views
when 12.5mL of 0.28M HNO3 and 5.0mL OF 0.46M Ba(OH)2 are mixed, is the resulting solution acidic, basic, or neutral?
1. 1 answer
2. asked by Jon
3. 618 views
3. You are going to plant trees in your hilly backyard. Tree A is located at coordinates (1,4) and Tree B is located at (5,12).
1. 1 answer
2. asked by victor
3. 617 views
How can knowledge of the direct and indirect approaches help writers write “efficiently and effectively
1. 1 answer
2. asked by collge
3. 613 views
Under differential calculus using the product rule find the derivative of (2x+3)^3(4x^2-1)^2
1. 1 answer
2. asked by Stanley dominic
3. 613 views
If you expect the inflation premium to be 2%, the default risk premium to be 1%, and the real interest rate to be 4%, then what
1. 0 answers
2. asked by dominic
3. 612 views
Sam walked 15 ft. up a ramp anddiscovered he was 9 ft. above the ground. Pam walked an additional 20 ft. up the ramp. How far
1. 1 answer
2. asked by Lane
3. 610 views
Green light has a wavelength of 4.96 10-7 m and travels through the air at a speed of 3.00 108 m/s. Calculate the period of
1. 1 answer
2. asked by Jesse
3. 605 views
When Collum Corporation was organized in January 2011, it immediately issued 10,000 shares of $60 par, 5 percent, cumulative
1. 0 answers
2. asked by Lauren
3. 605 views
4 NH3 + 5 O2 �¨ 4 NO + 6 H2OIf the rate of disappearance of O2 is 0.772, what is the rate of appearance of NO?
1. 1 answer
2. asked by Alex
3. 603 views
A boat is pulled into a dock by a rope attached to the bow of the boat an passing through the pulley on the deck that is 1m high
1. 1 answer
2. asked by Mehak
3. 600 views
A business is an institution that exists to serve the need of people for goods and services in a society.Discuss
1. 2 answers
2. asked by Davidson
3. 585 views
Can you please check if everything is correct now? I made the chages you told me. I have one more doubt in n. 3: Can I used
1. 1 answer
2. asked by Mike
3. 584 views
two of most significant social consequences of the Industrial Revolution.
1. 5 answers
2. asked by Anonymous
3. 584 views

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