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Questions Asked on October 21, 2011

A child in a boat throws a 5.30 kg package out horizontally with a speed of 10 m/s, see the figure. Calculate the velocity of
1. 2 answers
2. asked by kago
3. 6,526 views
What are the concentrations of OH– and H in a 0.00070 M solution of Ba(OH)2 at 25 °C? Assume complete dissociation.
1. 2 answers
2. asked by Mark
3. 5,383 views
A potential energy function for a two-dimensional force is of the form U = 3x3y – 7x. Find the force that acts at the point
1. 4 answers
2. asked by Anonymous
3. 5,315 views
Each value below represents a different aqueous solution at 25 °C. Classify each solution as acidic, basic, or neutral.pH=9.72
1. 3 answers
2. asked by Niloo
3. 4,351 views
Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. The mass of the
1. 1 answer
2. asked by TVIX
3. 3,819 views
A 2.5 g ice flake is released from the edge of a hemispherical bowl whose radius r is 40.0 cm. The flake-bowl contact is
1. 3 answers
2. asked by Anonymous
3. 3,751 views
Find value of tan75/2
1. 8 answers
2. asked by Ram
3. 3,682 views
A cereal factory has weekly fixed costs of $48,000. It costs $1.37 to produce each box of cereal. A box of cereal sells for
1. 1 answer
2. asked by Matt
3. 3,633 views
What is the lewis dot structure of C2H5F?
1. 1 answer
2. asked by Claire
3. 3,410 views
A 75 W light source consumes 75 W of electric power. Typically only about 5% of this energy is emitted as visible light of
1. 2 answers
2. asked by A 75- light source consumes 75 of electrical power. Assume all this energy goes into emitted light
3. 3,370 views
5. John and Daphne are saving for their daughter Ellen's college education. Ellen just turned 10 (t=0), and she will be entering
1. 4 answers
2. asked by Alice
3. 3,300 views
You are designing a ramp where the horizontal distance is twice the vertical rise. What will be the ramp angle to the nearest
1. 2 answers
2. asked by Tyyanna
3. 3,242 views
A college basket ball player makes 80% of her free throws. Suppose this probability is the same for each free throw she
1. 3 answers
2. asked by Sam
3. 3,151 views
Give a formula for the extended function that is continuous at the indicated point.F(x)= (x-4)/((√x)-2) at x=4 I know the
1. 1 answer
2. asked by Sarah
3. 2,920 views
A 95kg box initially at rest on a horizonal floor requires a 650N horizontal force to set it in motion. After the box is in
1. 2 answers
2. asked by john
3. 2,846 views
It is known that 77% of all new products introduced in grocery stores fail (are taken off the market) within 2 years. If a
1. 3 answers
2. asked by troy
3. 2,831 views
Consider the reaction, C2H4(g) + H2(g) ® C2H6(g), where DH = – 137 kJ. How many kilojoules are released when 55.3 g of C2H4
1. 2 answers
2. asked by Cooper
3. 2,812 views
A neon atom (m = 20.0 u) makes a perfectly elastic collision with another atom at rest. After the impact, the neon atom travels
1. 4 answers
2. asked by kago
3. 2,801 views
Calculate the theoretical yield for the bromination of bothstilbenes and cinnamic acid, assuming the presence of
1. 1 answer
2. asked by vivian
3. 2,781 views
The braking distance of a car is directly proportional to te square of it's speed.When the speed is p metres per second, the
1. 2 answers
2. asked by StuartKess
3. 2,638 views
The net work done in accelerating a propellerfrom rest to an angular speed of 110 rad/s is 1822.5 J. What is the moment of
1. 3 answers
2. asked by phys101
3. 2,486 views
What are the ka and kb reactions of NaHSO3 ?I tried it out and thought it would be ka= HSO3-(aq) + H2O(l)= H+(aq) + SO3-(aq) kb=
1. 1 answer
2. asked by Nia
3. 2,452 views
a) f(x) = 4.1x +92.16b) f(x) = 17.9x + 19.36 c) f(x) = 8.8x + 55.4 ANSWERS: a) 4.8 b) 0.93 c) 2.2, i just have no clue how they
1. 2 answers
2. asked by Nancy
3. 2,386 views
find d^2y/dx^2 (second derivative) for y=cos^2 4x
1. 3 answers
2. asked by Luke
3. 2,272 views
Nitrogen dioxide, NO2, dimerizes easily to form dinitrogen tetroxide , N2O4 :2NO2<===>N2O4 a) Calculate Change in reaction G*
1. 1 answer
2. asked by Jenna
3. 2,202 views
For what values of k will the function f(x)=3x^2+4x+k=0 have no zeros, one zero, 2 zeros
1. 1 answer
2. asked by Poppy
3. 2,181 views
Steve and Ed are cousins who were both born on the same day, and both both turned 25 today. Their grandfather began putting
1. 1 answer
2. asked by Alice
3. 2,073 views
in the given figure,PQ=PS and QR=SR.Prove that triangle PQR is congruent to triangle PSR.
1. 2 answers
2. asked by evadahun
3. 2,067 views
A. If the correlation coefficient is 0.65, what is the sign of the slope of the regression line?B. As the correlation
1. 1 answer
2. asked by Jen
3. 1,921 views
Two long parallel wires separated by a distance, d, carry currents in opposite directions. If the left-hand wire carries a
1. 4 answers
2. asked by Jessica
3. 1,918 views
Calculate [H3O ], [ClO4–], and [OH–] in an aqueous solution that is 0.130 M in HClO4(aq) at 25 °C.
1. 2 answers
2. asked by Sevy
3. 1,755 views
In a tape recorder, the magnetic tape moves at a constant linear speed of 5.6 cm/s. To maintain this constant linear speed, the
1. 3 answers
2. asked by mymi
3. 1,744 views
Complete this table of values for four aqueous solutions at 25 °C.Solution A: [H+]=0.0093M [OH-]=? pH=? pOH=? Solution B:
1. 2 answers
2. asked by Help
3. 1,739 views
Two blocks are free to slide along the frictionless wooden track ABC shown in Figure P9.20. A block of mass m1 = 5.00 kg is
1. 2 answers
2. asked by Anonymous
3. 1,645 views
A particle moves along a line where the potential energy of its system depends on its position r as graphed in Figure P8.46. In
1. 1 answer
2. asked by Anonymous
3. 1,616 views
Es la calculadora de Adela?
1. 2 answers
2. asked by Unknown
3. 1,599 views
as a baseball player strikes the ball with his batt the 1kg bat applies an average force of 250N on the .15kg baseball for .2
1. 1 answer
2. asked by Ali
3. 1,558 views
In a popular amusement park ride, a rotating cylinder of radius 3.0 m is set in rotation at an angular speed of 0.80 revolutions
1. 1 answer
2. asked by harrison
3. 1,536 views
Calculate the equilibrium concentration of H3O+ in the solution if the initial concentration of C6H5COOH is 6.0×10^-2. Kc=6.3
1. 1 answer
2. asked by erika
3. 1,500 views
A shot-putter throws the shot with an initial speed of 4.0 m/s from a height of 4.7 ft above the ground. Calculate the range of
1. 1 answer
2. asked by Anonymous
3. 1,465 views
A car having an initial speed of 16 m/s is uniformly brought to rest in 4.0 s. How far does the car travel during this 4.0 s
1. 2 answers
2. asked by john
3. 1,461 views
A 50.0-kg block and 100-kg block are connected by a string as in Figure P8.36. The pulley is frictionless and of negligible
1. 4 answers
2. asked by Anonymous
3. 1,461 views
Calculate [H3O ], [ClO4–], and [OH–] in an aqueous solution that is 0.130 M in HClO4(aq) at 25 °C.[H+]= [ClO4-]= [OH-]=
1. 3 answers
2. asked by Sevy
3. 1,434 views
The equation x^2+px+q=0, q cannot be equal to 0, has two unequal roots such that the squares of the roots are the same as the
1. 1 answer
2. asked by Ricky
3. 1,411 views
You observe that when copper is added to a soltion containing gold ions, the copper dissolves and the gold precipitates.
1. 2 answers
2. asked by Dani
3. 1,363 views
Can someone help with periods and commas?Select the correctly punctuated sentence. A) If you have any further comments or
1. 2 answers
2. asked by Cindy
3. 1,330 views
How to get a scholorship for Harvard Med skool ???? my best friend wants to know alsohow to get a scholoship for harvard arts
1. 2 answers
2. asked by Laruen
3. 1,316 views
In order to convert a tough split in bowling, it is necessary to strike the pin a glancing blow as shown in the figure. Assume
1. 0 answers
2. asked by kago
3. 1,283 views
A 21.0-g metal cylinder is placed on a turntable, with its center 90 cm from the turntable's center. The coefficient of static
1. 2 answers
2. asked by mymi
3. 1,262 views
Thompson Enterprises has $5,000,000 of bonds outstanding. Each bond has a maturity value of $1,000, an annual coupon of 12.0%,
1. 4 answers
2. asked by k
3. 1,254 views
A falling skydiver has a mass of 123 kg.(a) What is the magnitude of the skydiver's acceleration when the upward force of air
1. 2 answers
2. asked by Peter
3. 1,253 views
A box is sliding up an incline that makes an angle of 12.0° with respect to the horizontal. The coefficient of kinetic friction
1. 1 answer
2. asked by Peter
3. 1,244 views
A man went to a post office to buy stamps. He bought x, 50 cent stamps and y, 25 cent stamps for $3.50. If he bought twice as
1. 1 answer
2. asked by Charmin
3. 1,234 views
Water is leaking out of an inverted conical tank at a rate of cubic centimeters per min at the same time that water is being
1. 2 answers
2. asked by Riley
3. 1,225 views
Please Help. I can't get the balance sheet to balance out at at. I am frustrated!Prepare a Trial Balance, an Income Statement
1. 2 answers
2. asked by Jon
3. 1,199 views
Given that Kw for water is 2.4× 10–14 at 37 °C, compute the pH of a neutral aqueous solution at 37 °C, which is the normal
1. 1 answer
2. asked by John
3. 1,170 views
A monster truck has tires with a diameter of 1.10 m and is traveling at 30.0 m/s. After the brakes are applied, the truck slows
1. 1 answer
2. asked by mymi
3. 1,169 views
A box weighing 20 N, resting on a ramp, is kept at equilibrium by a 4N force at an angle of 20 degrees to the ramp, together
1. 1 answer
2. asked by Anonymous
3. 1,163 views
You throw a rock horizontally off a cliff with a speed of 10 m/s. after 3.1 seconds, how far were you when threw the rock?
1. 1 answer
2. asked by Matt
3. 1,161 views
A block of ice has the density of 0.97 g/cm3. How much of it will sink below the surface of the water? (Points : 1)About 97
1. 2 answers
2. asked by Darrian
3. 1,134 views
Houston Inc. is considering a project which involves building a new refrigeratedwarehouse which will cost $7,000,000 at year = 0
1. 0 answers
2. asked by McLocs
3. 1,121 views
a tank can be filled by one pipe in 3.5 hours and emptied by another in 4.2 hours. if both pipes are running, how long will take
1. 1 answer
2. asked by patel
3. 1,117 views
If a ball is thrown vertically upward from a height of 56ft. above ground with an initial velocity of 40ft. per second, then the
1. 3 answers
2. asked by Velocity per second
3. 1,116 views
what is the minimum initial speed of the dart if it is to hit the monkey before the monkey hits the ground, which is 14.2 m
1. 1 answer
2. asked by Anonymous
3. 1,109 views
1) a fitness club advertises a special for new members. each month of membership cost $19, with an initial enrollment fee of
1. 1 answer
2. asked by marko
3. 1,108 views
Suppose a flame of a gas burner stove emits light just like a blackbody.The flame appears blue,emiting most of the light as a
1. 2 answers
2. asked by EBS123
3. 1,085 views
Pick the correct answer which corrects the underlined portion of the following sentences in the simplest way possible – for
1. 4 answers
2. asked by Anonymous
3. 1,083 views
A baseball player hits a baseball into the outfield. The equation h= -0.005x^2 +x+3 give the path of the ball, where (h) is the
1. 0 answers
2. asked by Adam
3. 1,080 views
Suppose a new company decides to raise a total of $200 million, with $100 million as common equity and $100 million as long-term
1. 2 answers
2. asked by Alice
3. 1,076 views
Giselle spent a total of $43 when she went shopping. She spent $14 for socks, $18.75 for a wallet, and bought lunch. When she
1. 6 answers
2. asked by David
3. 1,068 views
How do you think Ralph Waldo Emerson, author of "Concord Hymn" , to Thomas Paine's arguments and his writing style?Well from
1. 1 answer
2. asked by Anonymous
3. 1,062 views
Please help me revise this sentence. The following sentence has many problems in grammar, sentence structure, and words. Correct
1. 2 answers
2. asked by Anonymous
3. 1,056 views
having trouble with finding the rise.slope is 0.40 run is 130 the set up is .040=rise
1. 3 answers
2. asked by pam
3. 1,005 views
The question isA rectangular has parameter of 24 units ,if width is 24 units what is length. I don't get how to use units .I
1. 3 answers
2. asked by Bbana
3. 986 views
A 12 g rifle bullet traveling 220 m/s buries itself in a 3.3 kg pendulum hanging on a 2.6 m long string, which makes the
1. 2 answers
2. asked by kago
3. 981 views
"You can't qualify for a Home Beautiful credit card until you are 18 years old."Indicate the alternative that both correctly
1. 2 answers
2. asked by Sheliah
3. 976 views
Which of the following statements is CORRECT?a. Two bonds have the same maturity and the same coupon rate. However, one is
1. 0 answers
2. asked by Alice
3. 971 views
Pick the correct answer which corrects the ALL CAP SENTENCE portion of the following sentences in the simplest way possible –
1. 1 answer
2. asked by Anonymous
3. 969 views
Three cubes, of side 0, 20, and 30, are placed next to one another (in contact) with their centers along a straight line as
1. 3 answers
2. asked by kago
3. 966 views
A dolphin experiences a force of 320 N [up]when it jumps out of the water. The acceleration of the dolphin is 2.6 m/s 2 [up].
1. 2 answers
2. asked by Michelle
3. 963 views
Which of the following statements is CORRECT?a. Two bonds have the same maturity and the same coupon rate. However, one is
1. 0 answers
2. asked by Alice
3. 962 views
Where would I look to find out how to pronounce the Chinese name Xuelin?
1. 2 answers
2. asked by Teri
3. 961 views
the graph of the functionf(x)=x^2-kx+k+8 touches the x-axis at one point. What are the possible values of k
1. 1 answer
2. asked by Ariel
3. 957 views
Which of the following statments is CORRECT?a. Assume that two bonds have equal maturities and are of equal risk, but one bond
1. 1 answer
2. asked by Alice
3. 946 views
To estimate how many more people live in atherton than needles, which is closer to exact answer : rounding to hundreds or
1. 1 answer
2. asked by Anonymous
3. 928 views
7. Find the reminder when 333666777888999 is divided by 3or 9 or 11 ?
1. 2 answers
2. asked by avinash
3. 909 views
Write five challenges are facing teacher for physical education?
1. 2 answers
2. asked by Physical education
3. 907 views
In the reaction of N2 and H2 to produce NH3, how many moles of H2 will produce 37.9 grams NH3 if sufficient N2 is present? Do
1. 1 answer
2. asked by Charles
3. 906 views
Review the nutrition quality of the items, using what you know about daily values, and ingredients (one of the products must
1. 3 answers
2. asked by Marissa
3. 902 views
A baseball player hits a baseball into the outfield. The equation h= -0.005x^2 +x+3 give the path of the ball, where (h) is the
1. 2 answers
2. asked by Vanessa
3. 900 views
A computer game starts with a set of 144 tiles separated into 36 equal groups.Sara played the game until there were 8 groups of
1. 3 answers
2. asked by Jack
3. 900 views
Calculate [H3O ], [ClO4–], and [OH–] in an aqueous solution that is 0.130 M in HClO4(aq) at 25 °C.[H+]= [ClO4-]= [OH-]=
1. 1 answer
2. asked by Sevy
3. 894 views
What angle does the tangent to the curve y(x)=sin^2(x/3)+15sin(x/3) at x=3pi make with the x-axis?
1. 2 answers
2. asked by Anonymous
3. 876 views
richman is considering buying insurance for each smartphone.use the ALE to detrmine the usefulness of this safeguard.for
1. 1 answer
2. asked by mike
3. 870 views
Benzene and cyclohexane molecules both contain six-membered rings. Benzene is a planar molecule, and cyclohexane is nonplanar.
1. 1 answer
2. asked by Amber
3. 862 views
Complete this table of values for four aqueous solutions at 25 °C.Solution A: [H+]=0.0093M [OH-]=? pH=? pOH=? Solution B:
1. 4 answers
2. asked by Help
3. 861 views
A flywheel in the form of a heavy circulardisk of diameter 0.83 m and mass 111 kg is mounted on a frictionless bearing. A motor
1. 0 answers
2. asked by phys101
3. 853 views
six familys split the cost of a family reunion. each family also spends $65 for a hotel room. Each familys share of the cost of
1. 13 answers
2. asked by marko
3. 849 views
Cosmic Communication Inc. is planning two new issues of 25-year bonds. Bond par will be sold at its $1,000 par value, and it
1. 2 answers
2. asked by Alice
3. 848 views
It is known that 77% of all new products introduced in grocery stores fail (are taken off the market) within 2 years. If a
1. 0 answers
2. asked by troy
3. 832 views

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