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2012
April

Questions Asked on April 29, 2012

Superman must stop a 190-km/h train in 180m to keep it from hitting a stalled car on the tracks.part a)If the train's mass is
1. 4 answers
2. asked by john
3. 9,275 views
A certain radar installation tracks airplanes by transmitting electromagnetic radiation of wavelength 4.0 cm.a)Find the
1. 1 answer
2. asked by Kristie
3. 8,811 views
I really need some help, I don't fully understand. Exspecially with fractions, don't know how to enter them on calculator.1.
1. 26 answers
2. asked by lilman
3. 8,459 views
question : net force of 225 N accelerates a bike and rider at 2.65m/s^2. What is the mass of the bike and rider together ?
1. 2 answers
2. asked by emma
3. 4,422 views
A balloon rubbed against denim gains acharge of −2.0 µC. What is the electric force between the balloon and the denim when
1. 5 answers
2. asked by Angel
3. 4,352 views
Express the repeating decimal as a ratio of two integers.1.23535353535...
1. 4 answers
2. asked by Sangita
3. 3,959 views
Air is filled at 60deg C in a vessel of open mouth. Upto what temperature should the vessel be heated so that one-fourth of the
1. 8 answers
2. asked by ridhi
3. 3,179 views
An explosion occurs at the end of a pier. The sound reaches the other end of the pier by traveling through three media: air,
1. 2 answers
2. asked by chelsea
3. 3,126 views
Chalcocite is an ore from which copper can be extracted for commercial use. The formula for this important ore is Cu2S. In the
1. 5 answers
2. asked by BreAnne
3. 2,623 views
word problem can you help me:a trapezoid has an area of 4 square units, and a height of 1 unit. what are the possible whole
1. 7 answers
2. asked by marko
3. 2,560 views
A small cork with an excess charge of +6.0 µCis placed 0.25 m from another cork, which carries a charge of −3.2 µC. What is
1. 2 answers
2. asked by Angel
3. 2,499 views
Alfred spent 1/4 of his money on food,1/3 on clothing and saved the rest.If he saved #72,000.How much did he spend on food?
1. 3 answers
2. asked by Chibueze
3. 2,485 views
5. A wheel 5.00 ft in diameter rolls up a 15.0° incline. How far above the base of the incline is the top ofthe wheel after the
1. 2 answers
2. asked by PAM
3. 2,161 views
Question #1 A 0.140kg- baseball traveling 30.0m/s strikes the catcher's mitt, which, in bringing the ball to rest, recoils
1. 2 answers
2. asked by emma
3. 1,898 views
1)when a certain polynomial is divided by x - 3, the quotient is x^2+2x-5 and the remainder is -3. what is the polynomial2) Find
1. 1 answer
2. asked by sarah
3. 1,800 views
The equation of motion of a particle in vertical SHM is given by y = (10 cm) sin 0.80t.(a) What is the particle's displacement
1. 1 answer
2. asked by Darla
3. 1,778 views
World-class sprinters can accelerate out of the starting blocks with an acceleration that is nearly horizontal and has magnitude
1. 1 answer
2. asked by Emma
3. 1,754 views
A tight rope is stretched 30 feet above the ground between the Jay and the Tee buildings, which are 50 feet apart. A tightrope
1. 2 answers
2. asked by Naseba
3. 1,746 views
Two baseballs, each with a mass of 0.157 kg, are separated by a distance of 379 m in outer space, far from any other objects. If
1. 3 answers
2. asked by Stella
3. 1,741 views
Can you write them in Mathematical/numbers form I'll solve them myself. i don't really get it though i have written the first
1. 7 answers
2. asked by Caroline Sunshine
3. 1,587 views
A 1.00 L flask containing the equilibrium mixture CO +Cl2 <-> COCl2 was found to contain 0.400 mol of COCl2, 0.100 mol of CO,
1. 1 answer
2. asked by Divya
3. 1,563 views
How much more work is done to push a box 2.5 m with a force of 30 N than to push a box 2.0 m with a force of 26 N?
1. 1 answer
2. asked by Anonymous
3. 1,515 views
an empty density bottle weighs 25 gram. when completely filled with water, it weighs 55 gram and when completely filled with a
1. 1 answer
2. asked by Surabhi
3. 1,485 views
A professor informs her class that a test is very difficult, but the grades will be curved. Scores for the test are normally
1. 2 answers
2. asked by Sabrina
3. 1,483 views
Two projectiles A and B are projected at the same time in the same vertical plane. A is projected at a height of 2m above the
1. 3 answers
2. asked by ridhi
3. 1,460 views
Finding the bugs.// Each time a salesperson sells a car at the Pardeeville New and Used Auto Dealership, // a record is created
1. 2 answers
2. asked by Alisa
3. 1,423 views
find the absolute extrema of f(x)=sin pi x on [-1,2]Not sure how to do this problem....
1. 1 answer
2. asked by Tyler
3. 1,421 views
Tyrone rounded 23.94 to 24.How did he round?A to the nearest hundredth B to the nearest tenth C to the nearest one D to the
1. 1 answer
2. asked by lidia
3. 1,383 views
A wheel 5.00 ft in diameter rolls up a 15.0° incline. How far above the base of the incline is the top ofthe wheel after the
1. 1 answer
2. asked by Anonymous
3. 1,375 views
A plane is flying at a speed and direction of 550 mph, 25 degrees north of west. There is a wind of 28 mph, at an angle of 19
1. 1 answer
2. asked by Ashley
3. 1,358 views
An arithmetic series has a first term 8 and third term 20. What does the fifth term equal? What does the second partial sum
1. 1 answer
2. asked by Kasey
3. 1,346 views
a rectangular piece of cardboard measuring 14 inches by 27 inches is to be made into a box with an open top by cutting squares
1. 2 answers
2. asked by kim
3. 1,335 views
A 115 mL sample of a 10.0 M ethylene glycol (C2H6O2) solution is diluted to 1.30 L. What is the freezing point of the final
1. 1 answer
2. asked by Jen
3. 1,319 views
a bicycle tire that has a volume of 0.85L is inflated to 140 pounds per square inch. What will be the pressure in the tire if
1. 1 answer
2. asked by Bryan
3. 1,301 views
Write the IUPAC name for straight-chain hydrocarbon with this formula: CH3CH2CH2CH2CH2CH2CH3Write the IUPAC name for any
1. 1 answer
2. asked by Allison
3. 1,246 views
The finding that light in free space has one speed, and one speed only, is consistent with ____________________. A) the
1. 2 answers
2. asked by Kristie
3. 1,222 views
3. The campus radio station WVAS surveyed 190 students to determine the types of music they liked. The survey revealed that 114
1. 1 answer
2. asked by cjones
3. 1,178 views
Critically discuss 8 ways in which the environmental problem impact on the community or any other community in South Africa.
1. 3 answers
2. asked by Nicola
3. 1,162 views
Heres the equation:(x^2)-(4y^2)-(4x)+(24y)-(36)=0 Your supposed to find the coordinates of the center, foci, and vertices, and
1. 6 answers
2. asked by Maya
3. 1,133 views
could you calulate the total, average variable, and average cost, when a company marginal cost of production is $5.00 per unit
1. 0 answers
2. asked by Anonymous
3. 1,112 views
True or false? (if false, replace word in *here*)1) The random changes of allele frequencies associated with genetic drift
1. 1 answer
2. asked by Max
3. 1,093 views
a book having a mass of 1.3kg lies on a shelf 1.8 m above the floors in a room whose ceiling is 2.5 m high. What is the books
1. 0 answers
2. asked by Jen
3. 1,091 views
a farmer wants to enclose a rectangle garden using the sides of her barn as one side of the rectangle. what is the maximum area
1. 5 answers
2. asked by ShelbyA
3. 1,090 views
Give a numerical example to show that a monopolist's marginal revenue can be upward-sloping over part of its range. Hint: The
1. 0 answers
2. asked by dee dee
3. 1,085 views
What trend did Johan Palmstruch start in Europe? How successful was this trend?
1. 1 answer
2. asked by Labz
3. 1,078 views
write a skeleton equation for this reaction hydrogen iodide(g)->hydrogen+iodide(G)
1. 1 answer
2. asked by Jessica
3. 1,075 views
In some dogs, long hair (L) is dominat over short hair (l), and wavy hair (W) is dominant over straight hair(w).Draw a cross
1. 2 answers
2. asked by Webdy
3. 1,067 views
A mass of 710 kg is located at the origin. A second mass, 44.0 kg, is located at the point (0.216,0.702) m. Find the magnitude
1. 2 answers
2. asked by Marc
3. 1,067 views
You are designing a study to determine whether music has an effect on learning. Previous research indicates that the standard
1. 0 answers
2. asked by tammy
3. 1,062 views
f(x)=((6x-3)/(x+6)) how do you find the intervals of decreasing and increasing...I found that there were no critical points yet
1. 1 answer
2. asked by Cheallaigh
3. 1,043 views
I need help with parallelism i need to rewrite these sentences.1. Because of prejudice in the corporation, not only did he leave
1. 24 answers
2. asked by Courtney
3. 1,042 views
1.)A sample of oxygen took 55 seconds to travel a certain distance. How long would it take for the same number of moles of
1. 3 answers
2. asked by Bryan
3. 1,003 views
Hetfield and Ulrich, Inc., has an odd dividend policy. The company has just paid a dividend of $7 per share and has announced
1. 1 answer
2. asked by T
3. 998 views
Ways in which Air pollution impact on the community
1. 2 answers
2. asked by Jane
3. 990 views
what force must the woman in Figure 3.38 exert on the floor with her hands in order to do a pushup?
1. 1 answer
2. asked by Anonymous
3. 981 views
If 7 3/8 pounds of peanuts, 2 1/4 pounds of walnuts, and 1 pound of pecans are divided equally to create 5 bags of mixed nuts,
1. 1 answer
2. asked by kayla
3. 978 views
an object of mass 0.1kg is rotated in a horizontal circle by a string 1m long. the maximum tension in the string before it
1. 7 answers
2. asked by ridhi
3. 964 views
an auditor wishes to test the assumption that the mean value of all accounts receivable in a given firm is $260.00 she will
1. 0 answers
2. asked by b
3. 960 views
Light has a maximum constant speed in which of the following? A) water.B) red glass.C) the upper atmosphere.D) clear glass.E)
1. 2 answers
2. asked by Kristie
3. 950 views
A block moves on a rough slope of length 10 m inclined at 30 degrees to the horizontal. The coefficiebt of friction between the
1. 0 answers
2. asked by Jat
3. 931 views
2. The Witherspoon Down Company specializes in making down jackets, ski vests, and comforters. The requirements for down and
1. 0 answers
2. asked by cjones
3. 931 views
Is it possible for a degree-4 polynomial P(x) to have only complex (no real) roots
1. 2 answers
2. asked by nash
3. 918 views
Use compound angle formulae to express Second harmonic i2= sin2t and the the third harmonic i3=sin3t in terms of the first
1. 3 answers
2. asked by Stephan pultree
3. 907 views
The mean length of a work week for the population of workers was reported to be39.2 hours. Suppose that we would like to take a
1. 1 answer
2. asked by frances
3. 905 views
A diver standing on the diving board has a mass of 89.0 kg and has a gravitational potential energy of 2.50 x 103 J. Determine
1. 0 answers
2. asked by JodyAnn
3. 873 views
Describe the operation of electrons in a conductor
1. 1 answer
2. asked by Esther
3. 855 views
A rubber ball is dropped from a height of 10meters,suppose it rebounds one-half the distance after each fall.find the total
1. 2 answers
2. asked by wilfred
3. 844 views
If an object is thrown vertically upward with an initial velocity of v, from an original position of s, the height h at any time
1. 1 answer
2. asked by Kelsey
3. 838 views
Well i took this test and failed. This is the last test and i graduate. I posted [my answers] to the ones i think are right.1.
1. 3 answers
2. asked by Caralynn93
3. 834 views
What effect do drugs,dangerous weapons and bullying have on schooling and education
1. 1 answer
2. asked by Mongikazi
3. 825 views
Cadmium and a solution of cadmium(II) nitrate are used with tin and a solution of tin(II) nitrate to construct a galvanic cell.1
1. 0 answers
2. asked by chamy
3. 821 views
How does water ppllution cause ill health,accidents,crises,and disaster within our community or globally
1. 1 answer
2. asked by Khululekile
3. 820 views
Zinc metal reacts with HCL similarly to magnesium: Zn(s) + 2HCL(aq) = ZnCl2(aq) + H2(g). the H2 gas produced was collected over
1. 1 answer
2. asked by preshi
3. 819 views
Consider a wave that travels a distance of 3 meters in 1 second with a frequency of 2 hertz. What is its amplitude? A) 4
1. 1 answer
2. asked by Kristie
3. 813 views
Write an equation of the hyperbola with foci (0, ) and (0, 2) and vertices of (0, ) and (0, 1).
1. 1 answer
2. asked by david
3. 803 views
If an object is thrown vertically upward with an initial velocity of v, from an original position of s, the height h at any time
1. 1 answer
2. asked by Billy
3. 797 views
choose two literary devices such as foreshadowing in sense ans sensibility
1. 1 answer
2. asked by kkkkk
3. 795 views
Describe the lifestyle disease cancer
1. 2 answers
2. asked by Nicola
3. 791 views
Coffee Express sells three drinks -lattes mochas and cappuccinos. Each latte has 3 ounces of espresso and 13 ounces of milk.
1. 2 answers
2. asked by Anonymous
3. 790 views
how much must a car produce to drive 150 km if an average force of 500 N must be maintained to overcome friction?
1. 2 answers
2. asked by Anonymous
3. 771 views
The combustion of propane is given by the following reaction:C3H8 (g) + 5 O2 (g) ---> 3 CO2 (g) + 4 H2O (g) If 5.00 L of propane
1. 1 answer
2. asked by zarmeen
3. 770 views
A carpenter wants to be sure that the corner of a building is square and measures 6.0 ft and 8.0 ft alongthe sides. How long
1. 2 answers
2. asked by RICE
3. 761 views
Calculate the concentration of HCO3- in an aqueous solution of 0.0885 M carbonic acid, H2CO3 (aq).I was going to set this up as
1. 3 answers
2. asked by Hannah
3. 753 views
Calculate the cell potential for the following reaction as written at 79C given that [Zn^+2] = 0.819 M and [Ni^+2] = 0.014 M.Zn
1. 4 answers
2. asked by Mima
3. 749 views
please anwser soon, a rigid 4.10L flask contains a mixture of 1.25 moles of H2, 0.250 mole of O2, and sufficient Ar so that the
1. 2 answers
2. asked by Bryan
3. 748 views
thank you so much help with the problem. i have trouble solving part b of the problem you helped me with. it told me to give it
1. 3 answers
2. asked by john
3. 742 views
how much torque do you exert if you push perpendicularly on a door with a force of 30 N at a distance of 0.85 m from its hinges
1. 1 answer
2. asked by Anonymous
3. 742 views
Escribe el cual (la cual, los cuales, las cuales) o lo cual en el espacio.Nos invitaron a cenar con ellos, ____ fue una buena
1. 0 answers
2. asked by david
3. 740 views
Write a paragraph of approximately 100 - 150 words in which you make 5 recommendations on how to overcome the style/cancer
1. 5 answers
2. asked by Nicola
3. 733 views
the formula for the surface area of a cylinder is: A=2πrh+2πr^2 If the height of the cylinder is 10 inches, and the surface
1. 2 answers
2. asked by Nancy
3. 725 views
Write the next term of sequence,and then write the rule for the nth term.1)1,8,27,64,....125 the nth is 2) 3,8,15, 24,.....35
1. 1 answer
2. asked by JOSEPH
3. 719 views
How many moles of Ca(NO3)2 are needed to make 0.250 liters of a 0.200 M Calcium nitrate solution?
1. 1 answer
2. asked by AJ
3. 714 views
A 23.9 mL sample of 0.283 M trimethylamine, (CH3)3N, is titrated with 0.207 M hydrochloric acid.At the equivalence point, the pH
1. 5 answers
2. asked by Hannah
3. 707 views
At a fabrication plant, a hot metal forging has a mass of 66.8 kg and a specific heat capacity of 437 J/(kg C°). To harden it,
1. 1 answer
2. asked by RC
3. 707 views
i have to find the area of an irregular polygonhow can i draw a picture to send you to show you? is this possible?
1. 3 answers
2. asked by marko
3. 703 views
For a normal distribution with a mean of 140 and a standard deviation of 55 find each value requested.a. What is the minimum
1. 1 answer
2. asked by tammy
3. 694 views
The enthalpy change was determined for thefollowing reactions; Ca (s) + CO2 (g) + ½ O2 (g ) → CaCO3 (s) ΔH = -812.8 kJ/mo l
1. 1 answer
2. asked by Anonymous
3. 693 views
Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis.y=0, y=
1. 0 answers
2. asked by hamlet
3. 685 views
explain 5 factors that contribute to the substance abuse
1. 1 answer
2. asked by karabo
3. 666 views
A rectangle pen for a pet is 5 feet longer than it is wide. Give possible values for the width W of the pen if its area must be
1. 1 answer
2. asked by ANGEL
3. 663 views

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