Questions Asked on April 15, 2010

A boat is sailing due east parallel to the shoreline at a speed of 10 miles per hour. At a given time the bearing to the
1. 2 answers
2. asked by Abbey
3. 7,917 views
A tourist in France wants to visit 5 different cities. If the route is randomly selected, what is the probability that she will
1. 1 answer
2. asked by nicole
3. 5,789 views
a movie theater sells tickets for $9.00 each. Senior citizens receive a discount of $3.00. One evening the theater sold 636
1. 2 answers
2. asked by monique n
3. 4,684 views
Bumpers on cars are not of much use in a collision. To see why, calculate the average force a bumper would have to exert if it
1. 3 answers
2. asked by brad
3. 4,376 views
a license plate has 2 letters followed by 4 digits.how many license plates are possible if the digits and letters can be
1. 1 answer
2. asked by anna
3. 3,621 views
C7H6O3+CH3OH→C8H8O3+H2OIn any experiment, 1.50g of salicyclic acid is reacted with 11.20g of methanol. The yield of methyl
1. 3 answers
2. asked by Molly
3. 3,496 views
In 2000, NASA placed a satellite in orbit around an asteroid. Consider a spherical asteroid with a mass of 1.00×1016 and a
1. 1 answer
2. asked by Mikhail
3. 3,406 views
Can you find 3 metaphors and 10 alliterations in this poem?THE Witch 1.She comes back night, in fearsome flight, 2. In garments
1. 10 answers
2. asked by Ali
3. 3,253 views
which of these salts is least soluble in water?1. LiCl 2. RbCl 3. FeCl2 4. PbCl2
1. 5 answers
2. asked by alex
3. 3,151 views
You pull a simple pendulum of length 0.237m to the side through an angle of 3.50 degrees and release it.How much time does it
1. 2 answers
2. asked by abby
3. 2,988 views
A die is rolled once. What is the probability of getting number 5?
1. 3 answers
2. asked by Dylan
3. 2,948 views
The equilibrium constant kc for the equationCS2 + 4H2 <--> CH4 +2H2S at 900 C is 27.8. what is the value of kc for the following
1. 2 answers
2. asked by Anna
3. 2,851 views
How many grams of sodium nitrate, NaNO3 are needed to make 250 ml of .500 M solution? MM of NaNO3 is 85 g/mol?? I'm not sure
1. 2 answers
2. asked by Nick Bones
3. 2,839 views
11. Infinitely many different sectors can be cut from a circular piece of paper with a 12-cm radius, and any such sector can be
1. 2 answers
2. asked by Sarah
3. 2,783 views
A compound contains only carbon, hydrogen, nitrogen, and oxygen. Combustion of 0.157 of the compound produced 0.213g CO2 and
1. 2 answers
2. asked by Anonymous
3. 2,724 views
If you start with 1.00 g NaCl and an excess of the other reactants, how many grams of Cl2 will be produced?
1. 1 answer
2. asked by brooke
3. 2,718 views
An 58.0 N box of clothes is pulled 5.2 m up a 30.0° ramp by a force of 95 N that points along the ramp. If the coefficient of
1. 6 answers
2. asked by brittany
3. 2,701 views
Find the number of subsets of the given set. {math, English, history, science, art}Is this correct: 1. {} 2. {math} 3. {English}
1. 1 answer
2. asked by bwb
3. 2,550 views
How many grams of NaCl must react to produce 1.00 g Cl2?
1. 4 answers
2. asked by brigette
3. 2,516 views
How do I simplify cscx-cotxcosx?
1. 2 answers
2. asked by Lauren
3. 2,373 views
Two 0.20 g metal spheres are hung from a common point by non-conducting threads that are 30 cm long. Both are given identical
1. 2 answers
2. asked by Newberger
3. 2,347 views
Find an equation for the ellipse.center:(3,2) a=3c Foci:(1,2)(5,2) h=3 k=2 I do not know where to start.
1. 1 answer
2. asked by Abbey
3. 2,187 views
if a super dense material with a refractive index of 1.76 x10^7 what is the speed of light in this material
1. 2 answers
2. asked by paige
3. 1,956 views
When displaced from equilibrium by a small amount, the two hydrogen atoms in an \rm H_{2} molecule are acted on by a restoring
1. 1 answer
2. asked by Tyler
3. 1,935 views
the scale factor of 2 similar polygons is 2:3. The perimeter of the larger one is 150 centimeters, what is the parameter of the
1. 2 answers
2. asked by Jennifer
3. 1,929 views
A sphere consists of all the points that are 5 units from its center(2, 3,−6). Write an equation that describes this sphere.
1. 1 answer
2. asked by Sarah
3. 1,898 views
It can be shown that for a uniform sphere the force of gravity at a point inside the sphere depends only on the mass closer to
1. 3 answers
2. asked by Mikhail
3. 1,780 views
Two roads intersect at an angle of 48º. A car and truck collide at theintersection, and then leave the scene of the accident.
1. 1 answer
2. asked by lALA
3. 1,693 views
Hydrogen peroxide, H2O2, solution can be purchased in drug stores and used as an antiseptic. A sample of such a solution
1. 1 answer
2. asked by HELP!!!
3. 1,649 views
How do I find the value of sin(a-b) if tana=4/3, cotb=5/12, 0<a<90, and 0<b<90?
1. 2 answers
2. asked by Lauren
3. 1,637 views
A flight attendant pulls her 70.0 N flight bag a distance of 263 m along a level airport floor at a constant speed. The force
1. 1 answer
2. asked by brittany
3. 1,590 views
Which of the following is true about the relationship between energy and chemical reactions?Activation energy is required for a
1. 2 answers
2. asked by ballamoney1
3. 1,585 views
Which of the following conditions does not ensure that a quadrilateral is a parallelogram?Answer choice: a) the diagonals bisect
1. 2 answers
2. asked by nicole
3. 1,540 views
This is the hardest question I can't figure out. Thanks =)31. The word transcribe means "to write out," and the word translate
1. 2 answers
2. asked by Abby
3. 1,528 views
C7H6O3+CH3OH→C8H8O3+H2OIn any experiment, 1.50g of salicyclic acid is reacted with 11.20g of methanol. The yield of methyl
1. 1 answer
2. asked by Molly
3. 1,518 views
A stone is dropped into a deep canyon and is heard to strike the bottom 15s after release. How deep is the canyon? The speed of
1. 2 answers
2. asked by Anonymous
3. 1,508 views
A flight attendant pulls her 70.0 N flight bag a distance of 263 m along a level airport floor at a constant speed. The force
1. 2 answers
2. asked by brittany
3. 1,490 views
Kc=5.85x10^-3 at 25 degrees C for the reactionN2O4(g)<-->2NO2(g) fifteen(15.0) grams of N2O4 is confined in a 5.00-L flask at 25
1. 6 answers
2. asked by confused
3. 1,487 views
What weight of water is required to fill a 80 gallon aquarium?The answer must be in kN
1. 1 answer
2. asked by Ann
3. 1,479 views
the equilibrium-constant expression for a reaction iskc= [N2][H2O]2 ---------- [NO]2[H2] what is the equilibrium-constant
1. 3 answers
2. asked by Anna
3. 1,467 views
The synthesis (S) phase is characterized byDNA replication. cell division. replication of mitochondria and other organelles. the
1. 0 answers
2. asked by ballamoney1
3. 1,445 views
True or False and explain: If the slope of a regression line is large, the correlation between the variables will also be large.
1. 2 answers
2. asked by Anonymous
3. 1,421 views
A partridge of mass 5.01kg is suspended from a pear tree by an ideal spring of negligible mass. When the partridge is pulled
1. 2 answers
2. asked by Mikhail
3. 1,398 views
The average lifetime of muons at rest is 2.20 us. A laboratory measurement on muons traveling in a beam emerging from a particle
1. 2 answers
2. asked by Andy
3. 1,365 views
A cylindrical tank is constructed to have a diameter of 5 meters and a height of 20 meters. Find the error in the volume if:(a)
1. 1 answer
2. asked by J'vonte
3. 1,350 views
How do plants vary in their efficiency at producing joules for human consumption?
1. 0 answers
2. asked by kelly
3. 1,324 views
Establish the following identitysin 2x/sinx - cos2x/cosx = secx
1. 1 answer
2. asked by Tyler
3. 1,300 views
Carbohydrates and lipids have many carbon-hydrogen bonds; therefore, they bothstore energy in these bonds. are easily dissolved
1. 1 answer
2. asked by ballamoney1
3. 1,276 views
uses of computer in home economics
1. 2 answers
2. asked by Anonymous
3. 1,271 views
When a sample of PCl5(g) (0.02087 mol/L) is placed in 83.00 L reaction vessel at 491.0 °C and allowed to come to equilibrium
1. 3 answers
2. asked by Drew
3. 1,223 views
Is this a good line from the poem Standing Alone by Chase.I can see the flower upon which my life grows, blooming into a rose.
1. 3 answers
2. asked by Sara
3. 1,222 views
Maleic acid is an organic compound composed of 41.39% C, 3.47% H, and the rest oxygen. If 0.271 mol of maleic acid has a mass of
1. 1 answer
2. asked by Anonymous
3. 1,177 views
A boat is rowed due North at 7.0 km/h directly across a river that flows due East at 4.0 km/h. Find the boat's resultant speed.
1. 1 answer
2. asked by Tony
3. 1,148 views
A speed boat at rest begins to move in a straight line from a dock. The boat has a constant acceleration of +3.0 m/s squared.
1. 0 answers
2. asked by Lenzen
3. 1,117 views
I just do not understand how to figure this out.Find the number of subsets of the given set. {math, English, history, science,
1. 5 answers
2. asked by Bart
3. 1,074 views
Suppose 100 dots are arranged in a square 10 × 10 array, and each dot is colored redor blue. (a) Prove that this array must
1. 1 answer
2. asked by Tyler
3. 1,073 views
I just have a small question about how to calculate the shares of common stocks, no par having the information below, thanks.The
1. 2 answers
2. asked by mayasa
3. 1,061 views
what single factor-geography, culture or economics- best explains why japan and china were not colonized by europeans in the
1. 1 answer
2. asked by ANNETTA
3. 1,051 views
How do factors in the biopsychosocial model operate when you make a decision that affects your health? Think of examples of when
1. 0 answers
2. asked by katrina
3. 1,049 views
With gaming such a fresh, and practically always fresh, issue between the Native Americans and the federal government, does the
1. 3 answers
2. asked by Cindy
3. 1,035 views
2. Methanol, CH3OH, is used as fuel in race cars. This liquid fuel can be synthesizedusing the following process C(s)+ ½ O2(g)
1. 0 answers
2. asked by Kristen
3. 1,033 views
geometryin Triangle xyz, ab is a midsegment of xyz. ax is = 26, bz=36 ay is congruent to ax and bx is congruent ot bz. I get
1. 0 answers
2. asked by Anonymous
3. 1,025 views
Flying against the wind, an airplane travels in hours. Flying with the wind, the same plane travels in hours. What is the rate
1. 1 answer
2. asked by Ericka
3. 1,019 views
find the percent increase in the population between 1950-2000.965,000,000 in 1950 2251,000,000 in 2000 I tink it is 2251 / 965 =
1. 1 answer
2. asked by Kyle
3. 1,000 views
Establish the identity(cosx/2-sinx/2)^2=1-sin x
1. 1 answer
2. asked by Peter
3. 990 views
What numbers can be expressed as an alternating-sum of an increasing sequence ofpowers of 2 ? To form such a sum, choose a
1. 2 answers
2. asked by CSI
3. 982 views
Suppose a1, a2, . . . , an is a list of n numbers with the following properties:The sum of those n numbers is 500. The sum of
1. 1 answer
2. asked by Rock
3. 974 views
A bicycle of mass 14.6 kg and a rider of mass 50kg generate a net force of 12N.How fast are they going after 2.0 seconds?
1. 1 answer
2. asked by nini
3. 973 views
Internal membranes play important roles in protein production and processing except they do NOTanchor ribosomes in place.
1. 6 answers
2. asked by ballamoney1
3. 969 views
A vase had 4 yellow flowers, 4 red flowers and 8 blue flowers. Donna takes one out, smells it and returns it to the vase. What
1. 1 answer
2. asked by Dylan
3. 968 views
A woman brings her 6 month old son to the dr. The chief complaint is a group of lesions on the child's back. In the exam room, a
1. 5 answers
2. asked by Christian
3. 952 views
I am trying to find the standard form of this equation for an ellipse.9x^2 + 4y^2 - 36x + 8y + 31 = 0 First I grouped the x and
1. 0 answers
2. asked by Abbey
3. 952 views
Vernon Wells hits a baseball that travels for 142m before it lands. The flight of the ball can be modelled by a quadratic
1. 2 answers
2. asked by Taha
3. 936 views
I have been working on this problem for a while and for some reason I don't come up with the answer.a^2+b^2=c^2 I came up with
1. 1 answer
2. asked by betty
3. 919 views
When a soccer ball is kicked with a vertical speed of 25 m/s its height, h metres, after t seconds is given by the equation
1. 2 answers
2. asked by Joe
3. 915 views
A ball of mass 522 g starts at rest and slides down a frictionless track, as shown below. It leaves the track horizontally,
1. 1 answer
2. asked by brittany
3. 913 views
Solve 2cosx-sin^x +2 =0 for all real values of x
1. 1 answer
2. asked by Alex
3. 910 views
Been working on this forever... Thanks =)33. A researcher identifies the nucleotide sequence AAC in a long strand of RNA inside
1. 2 answers
2. asked by Abby
3. 893 views
Consider the evaporation of methanol at 25.0 C:CH3OH(l)--->CH3OH(g) Delta G= 4.3 kJ Find Delta G at 25.0 C under the following
1. 0 answers
2. asked by Kyle
3. 892 views
A ¡§lattice point¡¨ has integer coordinates. Then, A = (m, n) is a lattice point if bothm and n are integers. Let¡¦s call
1. 1 answer
2. asked by Shrek
3. 890 views
Can you see if my answers are correct?Directions find the GCF: (I did the factor tree for each) 40; 2^3 times 5 128; 2^7 GCF: 2
1. 1 answer
2. asked by Courtney
3. 886 views
A ball of mass 522 g starts at rest and slides down a frictionless track, as shown below. It leaves the track horizontally,
1. 0 answers
2. asked by brittany
3. 884 views
a cell membrane is 70 angstrom (A)unit thick if angstrom unit is o.1nm what is the membrane thickness in a. meter b. micrometers
1. 1 answer
2. asked by glyn jane
3. 865 views
An object with mass 0.250 kg is acted on by an elastic restoring force with force constant 10.8 N/m. The object is set into
1. 0 answers
2. asked by Tyler
3. 847 views
For the following reaction:2NH3 ----> N2 + 3H3 6.42 moles of NH3 were placed in a 7.4 L flask and allowed to come to
1. 3 answers
2. asked by Sue
3. 846 views
Video Guide: How the Earth was MadeSection 1: 1. What did James Hutton discover as proof that the Earth was an old Earth? 2.
1. 4 answers
2. asked by mido
3. 841 views
Hi, I posted a question yesterday :A compound contains only carbon, hydrogen, nitrogen, and oxygen. Combustion of 0.157 of the
1. 1 answer
2. asked by Anonymous
3. 840 views
Tarzan swings on a 26.2 m long vine initially inclined at an angle of 39° from the vertical.(a) What is his speed at the bottom
1. 6 answers
2. asked by brittany
3. 825 views
solve 2cos^2x = square root of three cosx (couldnt find the sign on keyboard sorry) for principal values of x. express the
1. 2 answers
2. asked by Kathy
3. 825 views
Can you see if my answers are correct?Directions find the GCF: (I did the factor tree for each) 40; 2^3 times 5 128; 2^7 GCF: 2
1. 1 answer
2. asked by Courtney
3. 822 views
How do I decide whether something is polar or not?
1. 2 answers
2. asked by Megan
3. 817 views
what is the area of the largest circle that will fit in a square with area 64 cm squaredplease help me its confusing
1. 1 answer
2. asked by Katherine
3. 811 views
How would you calculate the concentration of an aqueous solution of Ca(OH2)that has a pH of 12.57.
1. 1 answer
2. asked by kia
3. 809 views
Three ships are at points P, Q, and R such that PQ=2km PR=7 km, and<QPR=142. What is the distance between Q and R, to two
1. 1 answer
2. asked by lALA
3. 789 views
If Cosinex = 4/5 and x has its terminal side in quadrant lV, find the exact value of tangent 2x
1. 1 answer
2. asked by Jaslin
3. 787 views
Steel wool [iron] is burned in the presence of oxygen in the air and makes iron oxide: is this a combination, decomposition, or
1. 1 answer
2. asked by Christopher
3. 760 views
The reactionSO2 + 1/2O2 -->SO3 has kp equal to 6.55 at 627C. what is the value of kc at this temperature? how do you set this
1. 1 answer
2. asked by Anna
3. 751 views
find the derivative of1) y=Ln(9x^2-3).e^(7x) 2)y=Ln((6x^3+x^2-x)/(x-1)(x+1)) please help
1. 0 answers
2. asked by Bababa
3. 747 views
Which of the following sentences best represents culturally unbiased writing?
1. 1 answer
2. asked by bruno
3. 743 views
If x is an angle in the first quadrant and cscx = 3 find the exact value of cos 2x
1. 1 answer
2. asked by Nicole
3. 741 views

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