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2011
June

Questions Asked on June 13, 2011

A light spring having a force constant of 125 N/m is used to pull a 9.50 kg sled on a horizontal ice rink. The coefficient of
1. 1 answer
2. asked by Student B
3. 3,794 views
bornite(Cu3FeS3)is copper ore used in the production of copper.when heated,the following reaction
1. 1 answer
2. asked by mushibwe lameck c
3. 3,197 views
use the properties of logarithms to write the expression as a sum or difference of logarithms or multiples of logarithms.show
1. 2 answers
2. asked by pre calc
3. 3,049 views
In the following reaction, which substance is acting as the Brønsted-Lowry acid?NH3 + H2O NH4+ + OH
1. 2 answers
2. asked by Johnny
3. 2,984 views
The Average density of Earth is 5.52g/cm^3. What is its density in a. kg/m^3 b. lb/ft^3. Please help me set up these equations.
1. 1 answer
2. asked by Grace
3. 2,679 views
use the properties of logarithms to write the expression as a sum or difference of logarithms or multiples of logarithms.show
1. 1 answer
2. asked by kevin
3. 2,451 views
The population of Las Vegas, Nevada in 2000 was 478,000 and is increasing at the rate of 6.28% per year. At this rate, when will
1. 2 answers
2. asked by Maisy
3. 2,325 views
how to determine composition of methanol-water from fractional distillation graph of temp/volume?
1. 1 answer
2. asked by Lola
3. 2,204 views
Popular wisdom is that eating pre-sweetened cereal tends to increase thenumber of dental caries (cavities) in children. A sample
1. 2 answers
2. asked by Thara
3. 2,002 views
A body thrown vertically up from the ground passes the height 10.2m twice at an interval of 10 sec. Its initial velocity was (g
1. 2 answers
2. asked by rohit rao
3. 1,969 views
Explain, in terms of particles, concentration, and reaction rate, what you expect to happen when methane gas (CH4) and hydrogen
1. 2 answers
2. asked by Johnny
3. 1,771 views
Assuming that the air temperature drops 6.5 Celsius degrees per 1000 m, compute the temperature at the tropopause if the
1. 1 answer
2. asked by Anonymous
3. 1,690 views
A is accumulated amount investing after p principal for t years at and interest rate of r compounded anually k is times per
1. 1 answer
2. asked by kevin
3. 1,666 views
Use the Henderson-Hasselbalch equation to calculate the pH of each solution:a solution that contains 1.05% C2H5NH2 by mass and
1. 2 answers
2. asked by HELP HELP
3. 1,541 views
A partial payment is made on the date(s) indicated. Use the UnitedStates Rule to determine the balance due on the note at the
1. 1 answer
2. asked by Melanie
3. 1,511 views
A box is pushed across the floor against a constant frictional force. The box is pushed across the room to the east in 30
1. 1 answer
2. asked by Casey
3. 1,501 views
Recently, an automobile insurance company performed a study of a random sample of 15 of its customers to determine if there is a
1. 2 answers
2. asked by Breezy
3. 1,392 views
Why is this sentence correct - concerning tensesI did my homework when I had watched TV. Does this mean that person did her/his
1. 11 answers
2. asked by Mark
3. 1,353 views
Describe the relationship between physical geography and world cultures.- my guess is that since geography has to do with
1. 1 answer
2. asked by *****
3. 1,285 views
Discribe the lifestyle disease/behaviour and explain 5 factors that contribute to the disease
1. 2 answers
2. asked by Faneli
3. 1,226 views
A car without ABS (antilock brake system) was moving at 16.5 m/s when the driver hit the brake to make a sudden stop. The
1. 1 answer
2. asked by Anonymous
3. 1,224 views
In a clinical trial of the drug Viagra, 117 patients reported headaches and 617 did not. What is the probability that a patient
1. 1 answer
2. asked by kati
3. 1,160 views
1. When I entered the room, he played the piano.2. When I entered the room, he started to play the piano. (Is #1 grammatical? Is
1. 1 answer
2. asked by rfvv
3. 1,144 views
A painter in a crate which hangs alongside a building, weighs 1000N.When the painter pull on the rope, the force he exerts on
1. 3 answers
2. asked by liang
3. 1,137 views
how is the position of a particle moving along a straight line described by a number
1. 0 answers
2. asked by anmol
3. 1,131 views
How many people took part in a soccer game in medieval England?1. Hundreds of people took part in a soccer game. 2. Hundreds of
1. 1 answer
2. asked by rfvv
3. 1,105 views
How many gallons of paint are necessary to paint the walls of a 15' by 12' room room with an 8' ceiling if one gallon of paint
1. 1 answer
2. asked by Garnett
3. 1,071 views
Given D=5, E=10 and F=4, evaluate D E/FMultiple choice 1/2 2 25/2
1. 1 answer
2. asked by jan
3. 1,065 views
What is the pH of a solution that has a concentration of hydronium ions that is 4.7 × 10-4 molar H3O+? Show, or explain, the
1. 1 answer
2. asked by Johnny
3. 1,045 views
write a paragraph explaining how you can apply writing elements such as evaluation, summary, synthesis, analysis to enhance your
1. 3 answers
2. asked by tt
3. 1,043 views
how high is a tree that casts a 30 ft shadow at the same time a 10 ft pole casts a shadow which is 10 ft long?
1. 2 answers
2. asked by Anonymous
3. 1,013 views
1. When I arrived at the station, the train had alrready left.2. When I arrived at the station, he had been waiting for me for
1. 2 answers
2. asked by rfvv
3. 1,011 views
An isosceles trapezoid with that bases 16 in and 34 in are inscribed in a circle such that one of the bases is the diameter.
1. 1 answer
2. asked by Michaela
3. 962 views
Factory Worker A is exposed to a sound of a constant intensity of 6.30 × 10–4 W m–2 at a distance of 1.00 m from a noisy
1. 1 answer
2. asked by nancy
3. 944 views
The population of Las Vegas, Nevada in 2000 was 478,000 and is increasing at the rate of 6.28% per year. At this rate, when will
1. 2 answers
2. asked by Maisy
3. 932 views
what did thomas alva edison invent?
1. 1 answer
2. asked by Phillip
3. 879 views
A reflecting, spherical Christmas tree ornament has a diameter of 8.0 cm. A child looks at the ornament from a distance of 20
1. 2 answers
2. asked by Ashley
3. 877 views
HiMy earlier question needed some clarification. I'm writing a monologue on a marginilised To Kill A Mockingbird character, I am
1. 5 answers
2. asked by Em
3. 875 views
A body moves 6 meters north than 8 meters east than 10 meters vertically upward. What is its resultant displacement from initial
1. 1 answer
2. asked by Anant
3. 864 views
a 2.0 kg particle is given a displacement (delta)r= 2.0i+3.0j (m). During this displacement, a constant force, F=2.0i-5j (N)
1. 2 answers
2. asked by unknown
3. 858 views
The mean weight (1.0042kg) of the contents of samples of 30 bags of sugar hasstandard error 0.008kg. Choose the option that is
1. 0 answers
2. asked by ben
3. 848 views
A sled with mass 20 kg is given a shove up a frictionless incline which makes an angle of 28 degrees with the horizontal.
1. 1 answer
2. asked by unknown
3. 831 views
If you earned $2,000 interest for 2 years at 7%, how much money did you originally invest?Thanks.
1. 5 answers
2. asked by Garnett
3. 821 views
how do you find the boiling temp of 2m of c6h12o6
1. 1 answer
2. asked by Alex
3. 815 views
two boys start running straight towards each other from two points that are 100m apart. one runs with a speed of 5m/s, while
1. 1 answer
2. asked by pavatharani
3. 791 views
A car traveling at 20 miles/hour stops in a distance of 15 feet when its brakes are locked. Assuming that the frictional force
1. 0 answers
2. asked by Casey
3. 775 views
is coefficient of correlation and coefficient of determination the same thing? or different?
1. 2 answers
2. asked by Thara
3. 764 views
1. The English liked soccer very much.(What is the part of speech of 'English'? An adjective or a noun?) 2. English people liked
1. 1 answer
2. asked by rfvv
3. 755 views
determine the pH of a solution made by mixing 8 ml of 1.10M acetic acid and 2ml 0.9 M sodium acetate solution. pKa for acetic
1. 1 answer
2. asked by Max
3. 736 views
solve each equation algebraically and check it by substituing into the orignall equation.50e^0.035x=200 3LN(x-3)+4=5 Method of
1. 1 answer
2. asked by kelly
3. 726 views
a stone falls from a cliff and travels 34.3 in the last second before it reaches the ground. calculate the height of the cliff?
1. 1 answer
2. asked by pavatharani
3. 725 views
does anybody have the questions and answers for examination 305000
1. 1 answer
2. asked by alana
3. 723 views
Find the lateral area of a rectangular prism if the base edges are 10 inches and 6 inches andwhose height is 5 inches
1. 2 answers
2. asked by benajmin
3. 706 views
Assuming that the air temperature drops 6.5 Celsius degrees per 1000 m, compute the temperature at the tropopause if the
1. 2 answers
2. asked by Dee
3. 701 views
researchers believe a new sleep on average 10 hours per night ( µ = 10), with a population standard deviation of 2.3
1. 0 answers
2. asked by jessica
3. 690 views
At what speed must a neutron travel to have a wavelength of 9.2 pm?
1. 6 answers
2. asked by Lance
3. 678 views
discuss several ways computers are integrated into our business and personal lives?
1. 0 answers
2. asked by Cez
3. 675 views
Shantisha BrownSC543-01 Article Critique 1 Mindes, Gayle; Murphy, Kathleen Torina (1982). The Importance of Play and Games in
1. 5 answers
2. asked by Shantisha
3. 669 views
f 27.0 mL of Ca(OH)2 with an unknown concentration is neutralized by 32.40 mL of 0.185 M HCl, what is the concentration of the
1. 1 answer
2. asked by Johnny
3. 661 views
an object is dropped from a tower. the distance in t seconds is given by d(t)=4.9t^2if the height of the tower is 146.9m , how
1. 2 answers
2. asked by jess
3. 660 views
A space shuttle is spotted flying at an angle of elevation of 17° when sighted from Cape Canaveral. At the moment it is
1. 1 answer
2. asked by Kathy
3. 655 views
What do sodium bicarbonate and magnesium hydroxide have in common?
1. 1 answer
2. asked by Suzanne
3. 651 views
What is the energy of a photon corresponding to radio waves of frequency 1.475 106 /s? I got 9.77e-28 as an answer and its wrong
1. 2 answers
2. asked by Lance
3. 649 views
In lamens terms what is the contralateral femoral region?
1. 0 answers
2. asked by Curlyqty
3. 648 views
how many grams of Copper (II) sulfate pentahydrate would you use to make 400.0 mL of .750 M solution?
1. 1 answer
2. asked by chelsea
3. 645 views
1. hydrogen Zn2. chlorine phase change 3. zinc N 4. lead physical change 5. breaking glass Pb 6. melting ice H 7. nitrogen Cl 8.
1. 1 answer
2. asked by sarah
3. 643 views
In the past a certain college has found that 35% of the students will grad within 4 years. A random sample of 450 students at
1. 0 answers
2. asked by danny
3. 642 views
Consider N atoms con¯ned on a surface of area A at temperature T . The atomsform a two-dimensional (2D) gas of classical,
1. 1 answer
2. asked by esmat
3. 639 views
Would earthquakes of similar magnitudes in different regions of the Earth cause approximately the same levels of damage?
1. 1 answer
2. asked by Anonymous
3. 635 views
The mysterious man looked at a large wall map of Germany and the countries she shared borders with. "Before starting a war,
1. 2 answers
2. asked by Raymond
3. 634 views
. Consider a large number, N(0), molecules contained in a volume V (0) . Assume that there is no correlation between the
1. 1 answer
2. asked by esmat
3. 633 views
Why Americans should not count on Social Security for retirement.Even though Social Security may always have enough funds to
1. 2 answers
2. asked by Debbie
3. 629 views
A sample of cesium metal reacted completely with water, evolving 48.7 mL of dry H2 at 24°C and 774 mmHg. What is the equation
1. 1 answer
2. asked by Lance
3. 625 views
if sin where defined=1/5 and where defined is in quadrant I find the exact value of sin2 where defined
1. 1 answer
2. asked by sarah
3. 621 views
Identify 10 environmental or human factors
1. 1 answer
2. asked by Stancey
3. 621 views
A grandfather pulls his grandson, whose mass is 20kg and who is sitting on a swing with ropes of length 2.50m, backward and
1. 1 answer
2. asked by unknown
3. 621 views
Calculate the density of an object with a mass of 109 grams and a volume of 123 ml. (Round your answer to 3 digits.)
1. 1 answer
2. asked by boo
3. 616 views
Substance A and substance B react to form substance C as described by the equation: A + B ↔ CIf only substance A and substance
1. 1 answer
2. asked by guilford technical college
3. 616 views
Vector A points in the negative direction. Vector B points at an angle of 35.0 above the positive x axis. Vector has a magnitude
1. 2 answers
2. asked by Julie
3. 615 views
solve for x2ax+b=c
1. 1 answer
2. asked by Eddie
3. 612 views
An advertisment claims that a certain 1200 kg car can accelerate from rest to a speed of 25 m/s in 8.0 s. what average power
1. 1 answer
2. asked by unknown
3. 610 views
Consider a monohybrid cross between a pure tall plant and a dwarf plant. In F2 generation of this cross 4000 seedlings were
1. 1 answer
2. asked by Shivangi
3. 609 views
Consider a monohybrid cross between a pure tall plant and a dwarf plant. In F2 generation of this cross 4000 seedlings were
1. 1 answer
2. asked by Shivangi
3. 606 views
あa　かka さsa たta なna　はha まma やya らra　いi きki しsi ちti にni ひhi みmi りri うu くku すsu つtu
1. 1 answer
2. asked by Bayraa
3. 604 views
a two digit number is four times the sum of its digits and twice the product of the digit. find the number using elimination
1. 1 answer
2. asked by abhishek
3. 598 views
What is the radius of the largest circle you can cut from a rectangular poster board with measurements 11 in. by 17 in?
1. 2 answers
2. asked by Anonymous
3. 596 views
A 735 N person walks up three flights of stairs, covering a total vertical distance of 10.0 m. If, as is typical, only 20.0% of
1. 1 answer
2. asked by Student B
3. 591 views
find the surface are of cylinder with a radius of 5 m and a height of 8 m. Use 3.14
1. 3 answers
2. asked by jeremy
3. 588 views
Selling price of a bond: Problem type 1On December 31, 2008, $140,000 of 9% bonds were issued. The market interest rate at the
1. 0 answers
2. asked by Nick
3. 585 views
Write these numerals in expanded form using power of 10.a 39 b 104 c 516 d 7056 e 61238
1. 2 answers
2. asked by dhruv
3. 583 views
A researcher wants to estimate the average time (in minutes) spent in a car daily. This will be done by randomly surveying 300
1. 0 answers
2. asked by Tammy
3. 579 views
Calculate the work done by non conservative forces of a hockey stick hitting a tennis ball using elastic potential energy, and
1. 0 answers
2. asked by Pat
3. 570 views
My original question:How many gallons of paint are necessary to paint the walls of a 15' by 12' room with an 8' ceiling if one
1. 2 answers
2. asked by Garnett
3. 566 views
Thank you for your corrections. I'm still doubtful on a few things.I did some corrections myself. Can you please tell me if they
1. 1 answer
2. asked by Henry1
3. 558 views
I need help I have to write a research paper on compare and contrast Mac vs PC. Which one is better for the medical field and
1. 2 answers
2. asked by Susan
3. 556 views
how many mL of a .094 M NaOh are needed to neutralize 21.4 mL of .160 M HCL
1. 1 answer
2. asked by sha
3. 547 views
find exact solution algebraically and check it by substituting into the original equation.2(10^-x/3)=20 logtiny4(x-5)=-1
1. 1 answer
2. asked by celeste
3. 546 views
2. A researcher hypothesized that the pulse rates of long-distance athletes differ from those of other athletes. He believed
1. 1 answer
2. asked by neil
3. 545 views
find the exact solution algebraically and check it by substituting into the orginal equation.1. 36(1/3)^x/5=4 2. 32(1/4)^x/3=2
1. 1 answer
2. asked by caleb
3. 545 views
Given an initial value of 17 g, which is halving once each 32 hours, an exponential function in term of hour t which models this
1. 1 answer
2. asked by k
3. 543 views

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