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Questions Asked on September 14, 2010

The speed of a nerve impulse in the human body is about 100 m/s. If you accidentally stub you toe in the dark, estimate the time
1. 9 answers
2. asked by jer
3. 11,766 views
how do you convert .83 to a fraction
1. 11 answers
2. asked by bren
3. 5,923 views
the vapor pressure of pure water at 25C is 23.8 torr. determine the vapor pressure (torr) of water at 25 C above a solution
1. 5 answers
2. asked by billy
3. 5,637 views
the mole fraction of urea (molar mass = 60g/mole) in a solution prepared by dissolving 16g of urea in 39g of h2o
1. 3 answers
2. asked by jessie
3. 4,335 views
Mari Bocazas is one of those people who often exaggerates. Whatever you do, she says she does it better, and whatever you have,
1. 1 answer
2. asked by Christopher
3. 3,953 views
A helicopter is rising at 5.1 m/s when a bag of its cargo is dropped. (Assume that the positive direction is upward.)(a) After
1. 3 answers
2. asked by penny
3. 3,470 views
I need help setting up this problem:Ethylene glycol has a specific gravity of 1.1088 at room temperature, What is the volume of
1. 4 answers
2. asked by MW
3. 3,236 views
Please explain why a positive number minus a negative number equals positive and you add it together??? Makes no sense at all.ex
1. 4 answers
2. asked by Cheryl
3. 3,158 views
Which of these best describes energy?A. the emission of particles from unstable nuclei B. the capacity to do work C. the
1. 6 answers
2. asked by junior
3. 3,146 views
WHAT TYPE OF CHEMICAL REACTION IS FORMED FROM Mg + O2----MgO
1. 2 answers
2. asked by lOUISE
3. 2,927 views
A long, thin straight wire with linear charge density -λ runs down the center of a thin, hollow metal cylinder of radius R. The
1. 1 answer
2. asked by David D.
3. 2,801 views
A drug is eliminated from the body through urine. Suppose that for a dose of 10 milligrams, the amount A(t) remaining in the
1. 3 answers
2. asked by Hayli
3. 2,766 views
the freezing point of ethanol (C2H5OH) is -114.6C. the molal freezing point depression constant for ethanol is 2.00C/m. what is
1. 3 answers
2. asked by lisa
3. 2,705 views
WRITE EACH ADDITION VERTICALLY. DECIDE WHICH NEW GROUPS YOU WILL MAKE. THEN, ADD TO SEE IF YOU WERE CORRECT.
1. 5 answers
2. asked by BYNN
3. 2,594 views
a man walks 10 meters in a direction of 20 degrees North of East, then 20 meters in a direction due west. What is his total
1. 2 answers
2. asked by Anonymous
3. 2,524 views
For this problem, assume the balls in the box are numbered 1 through 9, and that an experiment consists of randomly selecting 3
1. 3 answers
2. asked by Laura
3. 2,447 views
Assume that the studenthas a cup with 15 writing implements: 8 pencils, 5 ball point pens, and 2 felt-tip pens.In how many ways
1. 3 answers
2. asked by carly
3. 2,355 views
A wood block, after being given a starting push, slides down a wood ramp at a constant speed. What is the angle of the ramp
1. 5 answers
2. asked by Alura
3. 2,241 views
A solution of the enzyme amylase was added to a solution of starch and kept at 25C. The starch was broken down by hydrolysis.
1. 4 answers
2. asked by Arina Aliah
3. 2,213 views
1. 1. Derived demand refers toa) demand curves derived from utility functions b) an individual demand curve estimated from a
1. 14 answers
2. asked by shubh
3. 2,133 views
Analysis questions:A) What evidence is there that the gas bubbles formed in the first part of the investigation were hydrogen
1. 1 answer
2. asked by Immy
3. 2,062 views
what is the measure of the vertex angle of an isosceles triangle if one of its base angles measures 58?
1. 2 answers
2. asked by Anonymous
3. 2,004 views
When 2 dozen cans of food are placed in a bucket, the mass is 4560 g. When 18 cans of food are placed in the same bucket, the
1. 5 answers
2. asked by brebre
3. 1,999 views
In a survey of 5100 TV viewers, 40% said they watch network news programs. Find the margin of error for this survey if we want
1. 2 answers
2. asked by Rachel
3. 1,995 views
Match the region to its description.1. climate _defined by agreements between nations creating free trade zones 2. cultural
1. 5 answers
2. asked by Victoria
3. 1,932 views
A rocket is fired vertically with an upward acceleration of 30 m/s2. After 20 s, the engine shuts off and the rocket then
1. 3 answers
2. asked by Jackie
3. 1,902 views
A child is pushing a shopping cart at a speed of 1.5 m/s. How long will it take this child to push the cart down an aisle with a
1. 2 answers
2. asked by Brianna
3. 1,902 views
Assume a substance has a half-life of 11 years and the initialamount is 144 grams. How much remains at the end of 5 years? How
1. 3 answers
2. asked by nick
3. 1,846 views
Calcium chloride has been used to melt ice from roadways. Given that the saturated solution is 32% calcium chloride by mass,
1. 2 answers
2. asked by Frank
3. 1,844 views
how many moles of solute is present in 40.0mL of 1.000 M of HNO3
1. 1 answer
2. asked by Lauren
3. 1,770 views
Find an equation of the tangent line to the curve at the given point.y = 6 x sin x P= (pi/2 , 3pi) i know the slope of a tangent
1. 3 answers
2. asked by calc
3. 1,755 views
400.0g of a metal absorbs 10000.J of heat energy and its temperature rises from 20.0*C to 103.0*C. What is he specific heat of
1. 2 answers
2. asked by san b
3. 1,751 views
A man lifts a 2.0 kg stone vertically with his hand at a constant upward velocity of 1.5 m/s. What is the magnitude of te total
1. 4 answers
2. asked by Chelsea
3. 1,732 views
a basketball player can leap upward 0.5m. what is his initial velocity at the start of the leap?
1. 1 answer
2. asked by chris
3. 1,718 views
What is the half-life of an isotope if it decays to 12.5% of its radioactivity in 18 minutes?
1. 2 answers
2. asked by fatin
3. 1,662 views
In a mountainous location, the boiling point of pure water is found to be 95 degrees Celsius. How many grams of sodium chloride
1. 4 answers
2. asked by Mike
3. 1,653 views
A hummingbird hovers motionless beside a flower. You can observe that the wings are moving rapidly up and down. If air pushes
1. 1 answer
2. asked by Gio
3. 1,586 views
Phosphoric Acid is usually obtained at an 85% phosphoric acid solution, by mass. If this solution is 15 M, what is the density
1. 3 answers
2. asked by Tabatha
3. 1,585 views
At t = 0, a stone is dropped from a cliff above a lake; 2.0 seconds later another stone is thrown downward from the same point
1. 3 answers
2. asked by Hannah
3. 1,583 views
An object is shot from the back of a railroad flatcar moving at 40 km/h on a straight horizontalroad. The launcher is aimed
1. 1 answer
2. asked by Antonio
3. 1,572 views
Q is the midpoint of PR. PQ = 3x - 5 and QR = x + 17. What is the value of x?
1. 2 answers
2. asked by Paige
3. 1,566 views
A magazine claims that 25% of its readers are college students. Of a random sample of 200 readers, 42 are college students. Use
1. 1 answer
2. asked by cristi
3. 1,499 views
the freezing point of ethanol (C2H5OH) is -114.6C. the molal freezing point depression constant for ethanol is 2.00C/m. what is
1. 3 answers
2. asked by lisa
3. 1,498 views
For this problem, assume the balls in the box are numbered 1 through 9, and that an experiment consists of randomly selecting 3
1. 1 answer
2. asked by Laura
3. 1,498 views
A thin nonconducting rod is bent to form a semi-circle of radius R. A charge Q is uniformly distributed along the upper half and
1. 1 answer
2. asked by peter
3. 1,494 views
A particle experiences a constant acceleration that is north at 100 m/s^2. At t=0, its velocity vector is 60 m/s east. At what
1. 1 answer
2. asked by Chelsea
3. 1,471 views
WHAT DOES SILVAS CLARAS INSULAE MAGNAE SPECTATIS MEAN IN ENGLISH?
1. 2 answers
2. asked by BONNIE
3. 1,450 views
Arianna kicks a soccer ball off the ground and in the air with an initial velocity of 42 feet per second. Approximately what
1. 1 answer
2. asked by james
3. 1,449 views
Derive the equation of the locus of all points that are equidistant from the point F(-3,4) and the line y=-2. Leave your answer
1. 1 answer
2. asked by Asher
3. 1,441 views
A long, thin straight wire with linear charge density -λ runs down the center of a thin, hollow metal cylinder of radius R. The
1. 0 answers
2. asked by David D.
3. 1,410 views
from the top of a bridge over the burlington canal, maria looks down at a sailboat at an angle of depression 15 degrees.the
1. 2 answers
2. asked by haley
3. 1,400 views
1. State one property in which a solution of sugar in water resembles a mixture of sugar and sand, and one property in which it
1. 2 answers
2. asked by Rupali
3. 1,398 views
At rosemead high school, 94 students take biology, 86 take ethnic studies, and 95 take geometry. thirty-seven students take both
1. 1 answer
2. asked by Audrey
3. 1,391 views
What is the total vapor pressure4 at 20° C of a liquid solution containing 0.30 mole fraction benzene, C6H6, and 0.70 mole
1. 2 answers
2. asked by Tim
3. 1,389 views
Annie is walking to school leisurely at a speed of 1.0 m/s for the first half of her trip. She then remembers that her physics
1. 1 answer
2. asked by Kyle
3. 1,389 views
Upon spotting an insect on a twig overhanging water, an archer fish squirts water drops at theinsect to knock it into the water.
1. 0 answers
2. asked by Antonio
3. 1,376 views
what is the nth term equation for a geometric sequence with a1 = 36 and r = 1/3
1. 2 answers
2. asked by raven
3. 1,370 views
Twice Beth's daily pay is the same as her daily pay increased by 45$. Find Beth's daily pay.
1. 4 answers
2. asked by Laura
3. 1,335 views
if h(t) represents the height of an object above ground level at time t and h(t) is given by h(t)=-16t^2+13t+1 find the height
1. 1 answer
2. asked by Jenny
3. 1,320 views
Explain how you would use a number line to round 148 to the nearest ten.
1. 2 answers
2. asked by June
3. 1,312 views
The European Union (EU) was formed to advance the economic goals of Europe. Countries of the EU open their borders to member
1. 3 answers
2. asked by Victoria
3. 1,301 views
What is the freezing pint of 0.0091 m aqueous sodium phosphate, Na3PO4? Assume that sodium phosphate is a strong electrolyte and
1. 1 answer
2. asked by shawn
3. 1,283 views
Why are charges not reported as revenue for health care organizations?
1. 2 answers
2. asked by keisha
3. 1,265 views
A certain car is capable of accelerating at a rate of +0.50 m/s2. How long does it take for this car to go from a speed of 45
1. 2 answers
2. asked by j
3. 1,254 views
I don't understand what the difference was between the Lodge reservation and the Hitchcock reservation.Both reservations seem to
1. 2 answers
2. asked by Amy~
3. 1,236 views
A cat rides a merry-go-round turning with uniform circular motion. At time t1 = 2.00 s, thecat's velocity is (3.00 m/s) + (2.70
1. 0 answers
2. asked by Antonio
3. 1,225 views
distinguish between tolerance range and optimal range
1. 0 answers
2. asked by jin
3. 1,215 views
A particle leaves the origin with an initial velocity = (6.91 ) m/s and a constant acceleration= ( - 2.38 - 2.79 ) m/s2. When
1. 3 answers
2. asked by Antonio
3. 1,212 views
PLEASE HELP !!!!!!Find the acceleration reached by each of the two objects shown in figure below if the coefficient of kinetic
1. 1 answer
2. asked by bill
3. 1,164 views
How many milliliters of a 0.50 M solution contain 14.0 g of BaCl2 (Barium Chloride)?
1. 1 answer
2. asked by Emily
3. 1,146 views
4. Why the U.S. health care system is considered complex
1. 1 answer
2. asked by keisha
3. 1,134 views
2C6H5CL + C2HOCL3 / C14H9CL5 + H2O114G CHLOROBENZENE IS REACTED WITH 485G CHLORAL. WHAT MASS OF DDT IS FORMED?
1. 2 answers
2. asked by anderson
3. 1,127 views
You are pulling a suitcase through the airport at a constant speed. The handle of the suitcase makes an angle of 45 degrees with
1. 1 answer
2. asked by Ashli
3. 1,115 views
Which state of matter has the strongest bond?A. liquid B. solid C. gas D. molecule i think B but im not 100% sure
1. 2 answers
2. asked by junior
3. 1,108 views
Analysis of a compound gave 39.50% C, 2.20% H, and 58.30% Cl. When 0.855 g of this solid was dissolved in 7.50 g of napthalene,
1. 2 answers
2. asked by Chris
3. 1,090 views
What is the pattern for 3, 19, 99, 499, 2499
1. 4 answers
2. asked by Will
3. 1,076 views
An educator wants to estimate the proportion of school children in Boston who are living with only one parent. Since their
1. 2 answers
2. asked by Sarah
3. 1,070 views
The structual technique that includes long vertical studs running from the sill plate to the second floor rppf frame is
1. 3 answers
2. asked by sib
3. 1,052 views
2. 0.300 kilogram chloroform(chlorine calcium3)and 21.0grams eucalyptol(carbon10 hydrogen18 oxygen3. what is the concentration
1. 1 answer
2. asked by juzen
3. 1,040 views
does diamond hurt the enviroment and do we choose profit over ou enviroment when it comesto diaond mining.
1. 1 answer
2. asked by tyler
3. 1,030 views
A football kicker can give the ball an initial speed of 31 m/s. What are the (a) least and (b)greatest elevation angles at which
1. 0 answers
2. asked by Antonio
3. 1,027 views
A relay race is run along a straight line track 300.0 m long running south to north. 1st runner - starts at the South end of the
1. 1 answer
2. asked by Kayla
3. 1,015 views
i need multiple responses to these questions im stuck1. Hablen sobre los aparencias, creencias y aficiones de: -los hippies, los
1. 3 answers
2. asked by ..
3. 977 views
a person has $4 in nickles, quarters, and dimes. there is a total of 36 coins altogether. the number of quarters is 4 less then
1. 1 answer
2. asked by Bob
3. 976 views
A drug is eliminated from the body through urine. Suppose that for a dose of 10 milligrams, the amount A(t) remaining in the
1. 1 answer
2. asked by Hayli
3. 965 views
as kelvin temperature increases, the average kinetic energy of the particles in a sample1.Increase 2.Decrease 3.Remains the same
1. 1 answer
2. asked by chris k
3. 938 views
simplify (e is positive)(24e)^1/3 / (3e)^1/3
1. 3 answers
2. asked by daz
3. 938 views
the freezing point of ethanol (C2H5OH) is -114.6C. the molal freezing point depression constant for ethanol is 2.00C/m. what is
1. 0 answers
2. asked by lisa
3. 936 views
Find all possible radii of circle centered at (3,6) so that the circle intersects only one axis
1. 1 answer
2. asked by Jack
3. 928 views
A person is standing at the edge of the water and looking out at the ocean. The height of the person's eyes above the water is h
1. 1 answer
2. asked by linda
3. 902 views
I do not understand this:Evaluate and simplify f(x+h)-f(x)/h if f(x)=x^2-2x
1. 3 answers
2. asked by John
3. 897 views
Calculate the pressure exerted by 1.0 mol C2H6 behaving as a perfect gas
1. 1 answer
2. asked by Melissa
3. 895 views
A thin nonconducting rod is bent to form a semi-circle of radius R. A charge Q is uniformly distributed along the upper half and
1. 0 answers
2. asked by peter
3. 884 views
How would being located on a lake and river benefit both a fort and traiding post?
1. 1 answer
2. asked by Asia
3. 883 views
toi / la / aimer / la / moi / fête / mieux / et / nous / fairei am supposed to unscramble and conjugate these and make a
1. 3 answers
2. asked by Isabelle
3. 882 views
Bill likes pepperoni pizza, and Howard like sausage pizza. Both are willing to eat pizza with sausage and pepperoni both. They
1. 2 answers
2. asked by M.A.
3. 825 views
What are the positive and negative influences of the media on adolescents?
1. 2 answers
2. asked by Ggift
3. 818 views
Which is the largest sea, North, Mediterranean, Caspian or South China Sea?
1. 2 answers
2. asked by Anonymous
3. 802 views
Find the indicated outputs forf(x)=4x^2 -4x f(0) f(-1) f(2)
1. 2 answers
2. asked by Sue
3. 797 views
a ball is thrown up onto a roof, landing 4.70 s later at height h = 24.0 mabove the release level. The ball's path just before
1. 0 answers
2. asked by Antonio
3. 796 views

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