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. 7,880 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. 5,756 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. 4,646 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. 4,343 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. 3,590 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. 3,466 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. 3,365 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. 3,232 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. 3,123 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. 2,949 views
A die is rolled once. What is the probability of getting number 5?
1. 3 answers
2. asked by Dylan
3. 2,923 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. 2,827 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. 2,800 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. 2,748 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. 2,695 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. 2,691 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. 2,668 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. 2,521 views
How many grams of NaCl must react to produce 1.00 g Cl2?
1. 4 answers
2. asked by brigette
3. 2,497 views
How do I simplify cscx-cotxcosx?
1. 2 answers
2. asked by Lauren
3. 2,352 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. 2,313 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. 2,170 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. 1,930 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. 1,909 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. 1,896 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. 1,870 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. 1,751 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. 1,668 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. 1,616 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. 1,605 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. 1,567 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. 1,556 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. 1,515 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. 1,497 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. 1,496 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. 1,485 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. 1,463 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. 1,456 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. 1,453 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. 1,441 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. 1,414 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. 1,399 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. 1,364 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. 1,336 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. 1,317 views
How do plants vary in their efficiency at producing joules for human consumption?
1. 0 answers
2. asked by kelly
3. 1,305 views
Establish the following identitysin 2x/sinx - cos2x/cosx = secx
1. 1 answer
2. asked by Tyler
3. 1,271 views
uses of computer in home economics
1. 2 answers
2. asked by Anonymous
3. 1,264 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. 1,256 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. 1,194 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. 1,182 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. 1,141 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. 1,126 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. 1,087 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. 1,034 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. 1,034 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. 1,034 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. 1,029 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. 1,015 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. 1,007 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. 1,002 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. 1,001 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. 995 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. 983 views
Establish the identity(cosx/2-sinx/2)^2=1-sin x
1. 1 answer
2. asked by Peter
3. 969 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. 960 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. 945 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. 944 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. 943 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. 937 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. 930 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. 916 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. 903 views
Solve 2cosx-sin^x +2 =0 for all real values of x
1. 1 answer
2. asked by Alex
3. 894 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. 885 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. 878 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. 873 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. 872 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. 866 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. 855 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. 852 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. 844 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. 836 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. 828 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. 825 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. 812 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. 809 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. 807 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. 796 views
How do I decide whether something is polar or not?
1. 2 answers
2. asked by Megan
3. 796 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. 796 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. 785 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. 781 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. 767 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. 767 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. 752 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. 737 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. 733 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. 731 views
Which of the following sentences best represents culturally unbiased writing?
1. 1 answer
2. asked by bruno
3. 722 views

Back to April 2010