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Questions Asked on November 3, 2010

Determine the value of k for which the function f(x)= 4x^2- 3x+2kx+1 has two zeros. check these values in the original equation?
1. 2 answers
2. asked by priya
3. 11,486 views
A cylindrical tank 2m diameter and 4m long with its axis horizontal, is half filled with water and half filled with oil of
1. 2 answers
2. asked by Claire
3. 6,764 views
For what values of a and b is the line 2x + y = b tangent to the parabola y = ax2 when x = 5?
1. 2 answers
2. asked by Michael
3. 6,059 views
two blocks are connected by a string. the smooth incline surface makes an angle of 42 degrees with the horizontal, andthe block
1. 3 answers
2. asked by stephanie
3. 5,999 views
Treatment of gold metal with BrF3 and KF produces Br2 and KAuF4, a salt of gold.Find the mass of the gold salt that forms when a
1. 3 answers
2. asked by john
3. 5,868 views
A compound contains only nitrogen and hydrogen and is 87.4% nitrogen by mass. A gaseous sample of the compound has a density of
1. 3 answers
2. asked by EM
3. 5,558 views
you want to nail a 1.6 kg board onto the wall of a barn. to position the board before nailing, you push it against the wall with
1. 3 answers
2. asked by stephanie
3. 5,496 views
WHAT IS THE KINETIC ENERGY OF A BALL WITH THE MASS OF 5KG ROLLING AT 10M/S
1. 4 answers
2. asked by TRISHA
3. 4,818 views
Solve the pair of simultaneous equationslog(x+y)=0, 2logx=log(y-1)
1. 4 answers
2. asked by Matteo
3. 3,476 views
why did zorna pour ketchup on her brother's hand
1. 10 answers
2. asked by joseline
3. 3,394 views
Erica kicks a soccer ball 12 m/s at horizontally from the edge of the roof of a building which is 30.0 m high.a. When does it
1. 1 answer
2. asked by Nakisa
3. 3,190 views
A bowler rolls a 5 kg bowling ball down a magical frictionless bowling alley. The ball accelerates at an average rate of 2
1. 5 answers
2. asked by Nick
3. 2,892 views
Suppose that a firm is currently employing 10 workers, the only variable input, at a wage rate of $100. The average physical
1. 1 answer
2. asked by Dede
3. 2,809 views
The molar heats of fusion and vaporization for silver are 11.3 kJ/mol and 250. kJ/mol, respectively. Silver's normal melting
1. 1 answer
2. asked by Jasmin
3. 2,484 views
The perimeter of the rectangular shaped base of a piano is 16 feet. What are all possible dimensions of the piano, using only
1. 16 answers
2. asked by gage
3. 2,447 views
Explain how shaving 5% off the estimated direct labor hours in the base for the predetermined overhead rate usually results in a
1. 1 answer
2. asked by Anonymous
3. 2,269 views
A force of 10N acts at an angle of 30 to the horizontal.what is the resultant of the force in the vertical direction.
1. 5 answers
2. asked by Alkane
3. 2,207 views
A commercial for a well known cleaning powder says that it "shakes out white, then turns blue" what type of reaction os
1. 2 answers
2. asked by Ash
3. 2,115 views
Given that the specific heat capacities of ice and steam are 2.06 J/g°C and 2.03 J/g°C, the molar heats of fusion and
1. 1 answer
2. asked by Riley
3. 2,107 views
The instruments attached to a weather balloon in the figure below have a mass(m) of 5.0 kg. The balloon is released and exerts
1. 2 answers
2. asked by eden
3. 2,102 views
According to the Heisenberg uncertainty principle, if the uncertainty in the speed of an electron is 3.5 x 10(3) m/s, the
1. 1 answer
2. asked by lavonne
3. 1,938 views
A man doing push-ups pauses in the position shown in the figure . His mass m = 80 kg.In push up position: From hands to waist =
1. 2 answers
2. asked by robin
3. 1,927 views
The function D(h)=7e^-0.4(h) can be used to determine the milligrams D of a certain drug in a patient's bloodstream h hours
1. 1 answer
2. asked by Hannah
3. 1,851 views
Harry jumps horizontally from the top of a building that is 20.0 m high. He hopes to reach a swimming pool that is at the bottom
1. 2 answers
2. asked by Mallory
3. 1,849 views
find the exact value of tan(2sin-1 3/5)
1. 1 answer
2. asked by Anonymous
3. 1,800 views
a rengular prism is made of 1-centimeter cubes. the volume of the rectangular prism i 60 cubic centimeters. which set of
1. 2 answers
2. asked by annonymous
3. 1,781 views
calculate the mass of the water of hydration if a hydrate loses 0.025 mol of H2O when heated
1. 1 answer
2. asked by Sherry
3. 1,747 views
Hello - I am having trouble with verbs and linking verbs...can you tell me if these are correct? I also have to pick out the
1. 9 answers
2. asked by Sasha
3. 1,728 views
Ancient Egypt& Kush study link.thanks
1. 6 answers
2. asked by klk
3. 1,725 views
A 69.5 kg painter is on a uniform 30.0 kg scaffold supported from above by ropes . There is a 5.0 kg pail of paint to one side,
1. 2 answers
2. asked by Nate
3. 1,680 views
Compare and Contrast Religions EssayHow are the three religions: Judaism, Christianity and Islam alike? Judaism, Christianity
1. 4 answers
2. asked by Allyson
3. 1,610 views
A rifle that shoots bullets at 460 m/s is to be aimed at a target 47.0 m away. If the center of the target is level with the
1. 1 answer
2. asked by tom
3. 1,587 views
Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n=3 to n=1 energy
1. 0 answers
2. asked by lavonne
3. 1,568 views
Suppose that 50.0 mL of 0.25 M CH3NH2(aq) is titrated with 0.35 M HCl(aq).(a) What is the initial pH of the 0.25 M CH3NH2(aq)?
1. 1 answer
2. asked by Dana
3. 1,533 views
software programs that allow you to legally copy files and give them away at no cost are called which of the following?a)
1. 4 answers
2. asked by pam
3. 1,509 views
The molar heats of fusion and vaporization for silver are 11.3 kJ/mol and 250. kJ/mol, respectively. Silver's normal melting
1. 1 answer
2. asked by Jasmin
3. 1,482 views
A 75 kg box slides down a 25 degree ramp with an acceleration of 3.60 meters per second squared. Find the coefficient of kenetic
1. 3 answers
2. asked by Daniel
3. 1,441 views
HELP!! It takes 64 inches of ribbon to make a bow and wrap the ribbon around a the box. The box takes 30 inches of ribbon. The
1. 4 answers
2. asked by sammie
3. 1,431 views
A 125 kg crate rests on the flatbed of a truck that moves at a speed of 15.0 m/s around an unbanked curve whose radius is 66.0m.
1. 3 answers
2. asked by Lynda
3. 1,415 views
2. The North Atlantic Treaty Organization (NATO) was based on the principle ofa. free trade b. collective security c.
1. 2 answers
2. asked by mysterychicken
3. 1,399 views
A block (mass = 2.9 kg) is hanging from a massless cord that is wrapped around a pulley (moment of inertia = 1.2 x 10-3 kg·m2),
1. 0 answers
2. asked by danica
3. 1,379 views
How long does it take for a deposit of $1400 to double at 10% compounded continuously?
1. 1 answer
2. asked by samantha
3. 1,362 views
At a price of $7.5 per ticket, a musical theater group can fill every seat in their 1550 seat performance hall. For every
1. 1 answer
2. asked by Erika
3. 1,283 views
A single mole of AgNo3 weighs 169.88 grams. In order to make a 1M solution, how many grams of AgNo3 would need to be dissolved
1. 2 answers
2. asked by Jazz
3. 1,256 views
A tree casts a shadow 8 ft long. A 6 ft man casts a shadow 4 ft long. The triangle formed by the tree and it's shadow is similar
1. 2 answers
2. asked by Anonymous
3. 1,252 views
a .15 kg ball is placed in a shallow wedge with an opening angle of 120 degrees. for each contatct point between the wedge and
1. 0 answers
2. asked by stephanie
3. 1,230 views
1. When does the Narrative of Sojourner Truth take place
1. 1 answer
2. asked by antioch
3. 1,206 views
The fermentation of sugar (C6H12O6) to form ethanol (C2H5OH) and carbon dioxide (CO2) occurs according to the following
1. 0 answers
2. asked by mailyn
3. 1,205 views
Attached is the actual Financial Statements, Cash Flow, and Taxes associated with the assignment questions below. 2007 & 2008
1. 1 answer
2. asked by Lisa
3. 1,175 views
Microwave radiation is absorbed by the water in food. As the water absorbs the heat it causes the food to get hot. If the λ of
1. 1 answer
2. asked by Marie
3. 1,163 views
3 cards are drawn simultaneously at random from a standard deck.Find the probability that all the cards are hearts.
1. 1 answer
2. asked by cmb
3. 1,130 views
samuel is beginning to realize that he has a talent for art and he feel good about it which of erikson 's stages may he have
1. 3 answers
2. asked by anu
3. 1,127 views
I am submitting agian, I am not sure the answer someone gave sounds correct.We are learning about exponents. A type of bacteria
1. 3 answers
2. asked by Kam
3. 1,126 views
According to the following equation:CaCO3 + 2 HCl---> CaCl2 + H20 + CO2 How many grams of CO2 can be produced from the reaction
1. 0 answers
2. asked by Makena
3. 1,122 views
A 1200 kg car is being driven up a 5:0 hill. The frictional force is directed opposite tothe motion of the car and has a
1. 0 answers
2. asked by deng
3. 1,115 views
The two legs of a right triangle measure 12 inches and 16 inches. How long is the hypotenusei don't get you
1. 1 answer
2. asked by AnonymousGRL3
3. 1,115 views
What do you call a substance that is not a liquid but you can change it's form into whatever you want? Is it a solid?Thanks,
1. 1 answer
2. asked by Bell
3. 1,107 views
what role does dan cody play in gatsby's development?? plz helpthe answer is 1 mark for my quiz but my teacher gave me only 1/2
1. 1 answer
2. asked by Sabrina
3. 1,106 views
log2^24 - log2^3 = log5^xwhat is X? thanks
1. 2 answers
2. asked by brooks
3. 1,102 views
A 320-N sphere 0.20 m in radius rolls without slipping 6.0 m down a ramp that is inclined at 25° with the horizontal. What is
1. 0 answers
2. asked by A
3. 1,072 views
Suppose that 30.0 mL of 0.20 M C6H5COOH(aq) is titrated with 0.30 M KOH(aq).(a) What is the initial pH of the 0.20 M
1. 2 answers
2. asked by Alania
3. 1,050 views
at Morris Elementarhy there are 45 students in each grade, four though six. In the fourth grade, 19 participate in sports after
1. 2 answers
2. asked by maria
3. 1,023 views
The thallium (present as Tl2SO4) in a 9.468 g pesticide sample was precipitated as thallium(I) iodide. Calculate the mass
1. 0 answers
2. asked by Misch
3. 1,013 views
Marcia developed a roll of film and received 4-inch by 6-inch prints. She wants to have one picture enlarged to an 8-inch by
1. 1 answer
2. asked by Caitlin
3. 1,012 views
I have a question how to answer the following:1. Estudias mucho? Would I say Si, me gusta estudio mucho. 2. Andas en patineta en
1. 5 answers
2. asked by Joey
3. 1,009 views
A type of bacteria reproduces by splitting in two every thirty minutes. How many bacteria will there be after 4 hours if there
1. 3 answers
2. asked by Kam
3. 999 views
A baseball is hit at ground level. The ball reaches its maximum height above ground level 2.6 s after being hit. Then 2.1 s
1. 1 answer
2. asked by tom
3. 995 views
a solution has a density of 1.50 g/mL. how many grams are needed to obtain 10.0 mL of solution?
1. 3 answers
2. asked by JessiKa
3. 994 views
MAXIMUM ELLONGATION IN SPRING WHEN THE MASS WITH SPRING IS THROWN WITH VELOCITY 4M FROM EQUILIBRIUM GIVEN THAT K=50 MASS OF BODY
1. 0 answers
2. asked by KOMAL
3. 987 views
0.17 kg point mass moving on a frictionless horizontal surface is attached to a rubber band whose other end is fixed at point P.
1. 1 answer
2. asked by Derek
3. 973 views
The coefficient of static friction between hard rubber and normal street pavement is about 0.42. On how steep a hill (maximum
1. 1 answer
2. asked by Jon
3. 971 views
I have a few question on linking verbs:1. I am fond of both kinds of comics. linking verb - fond? 2. Joseph Pulitzer was the
1. 1 answer
2. asked by Emily
3. 965 views
An IV infusion order is written for 0.3 L of D5W/0.45% NS to run over 12 hours. The drp factor on th IV is set to 12 gtt/mL.
1. 1 answer
2. asked by Frank
3. 964 views
Which of the following is not a one-electron atomA) H B) He+ C) Li2+ D) Be2+ E) O7+ I know that H, He+, Li2+ and Be3+ are. i
1. 0 answers
2. asked by lavonne
3. 963 views
k so question is one you have all answered previously, 3 different forces acting on a single mass, in north south and east
1. 0 answers
2. asked by mathlife
3. 959 views
Given a level of confidence of 99% and a population standard deviation of 12, answer the following:(A) What other information is
1. 0 answers
2. asked by Valerie
3. 958 views
what is the formula for finding % of a #?example: 1. find 40 % of 160? 2. 24 is 100 % of what? also, how do you do this problem?
1. 5 answers
2. asked by abbie
3. 958 views
if the U.S. were to have another constitutional convention, would we keep a federal system or change? why or why not
1. 1 answer
2. asked by Anonymous
3. 954 views
A grid has lines at 90-degree angles. There are 12 lines in one direction and 9 lines in the other direction. Lines that are
1. 1 answer
2. asked by Anonymous
3. 951 views
An image on a slide is similar to it's projected image. A slide is 35 mm wide ande 21 mm high. It's projected image is 85 cm
1. 3 answers
2. asked by Anonymous
3. 942 views
According to the Heisenberg uncertainty principle, if the uncertainty in the speed of an electron is 3.5 x 10(3) m/s, the
1. 1 answer
2. asked by lavonne
3. 938 views
The 2500 kg cable car shown in the figure below descends a 200 m high hill. In addition to its brakes, the cable car controls
1. 0 answers
2. asked by Laila
3. 936 views
a tree on a 30degree slope grows straight up .what are the measure of the greatest and smallest angles the tree make with the
1. 1 answer
2. asked by 000
3. 918 views
If a chain of 30 identical short springs linked end-to-end has a stiffness of 420 N/m, what is the stiffness of one short
1. 0 answers
2. asked by Starfallen
3. 918 views
express the angular velocity of the second hand on a clock in rev/hr
1. 1 answer
2. asked by pedro
3. 907 views
the american Society of Criminology or the Academy of Criminal Justice? Why?
1. 1 answer
2. asked by meeee
3. 901 views
You need to prepare medium for your culture cells. Your salt solution is 10x concentration, dilute to 1x for use. You also need
1. 0 answers
2. asked by Andy
3. 898 views
1.Describe how you would measure 125ml of hard margarine using water displacement?2.Why are liquid measures frequently made of
1. 3 answers
2. asked by Pratigya
3. 889 views
Two strong magnets on opposite sides of a small table are shown. The long-range attractive force between the magnets keeps the
1. 3 answers
2. asked by mathlife
3. 882 views
Please help me solve this..It costs $10 plus $8 per hour to rent a canoe. Brandon and Erin have $50. Solve the following
1. 2 answers
2. asked by Caitlin
3. 876 views
Could someone look over this for me it is a paper in APA to answer 4 questions? Thanks.HEALTH INSURANCE PORTABILITY AND
1. 12 answers
2. asked by Theresa
3. 874 views
You have 20mL of a solution of concentration 0.015mg/mL of x in test tube #1.Prepare serial dilutions of your stock solution,
1. 1 answer
2. asked by Jon
3. 863 views
65.0-kg person throws a .045kg snowball forward with a ground speed of 30.0 m/s. a second person with a mass of 60.0-kg catches
1. 0 answers
2. asked by bailey
3. 858 views
A cart of mass m1 = 15 kg slides down a frictionless ramp and is made to collide with a second cart of mass m2 = 23 kg which
1. 1 answer
2. asked by Jessica
3. 857 views
why should samples be weighed rather than measured volumetrically when determining the percent acetic acid in vineger
1. 1 answer
2. asked by Anonymous
3. 856 views
A student performing the water of hydration experiment cant seem to get his hydrate to constant weight. Several times he heats
1. 1 answer
2. asked by Ash
3. 851 views
Find velocity of electron emitted by metal whose threshold frequency is 2.1*10^14 and when exposed to visible light wavelength
1. 2 answers
2. asked by liz
3. 848 views
Can you think of something that is legal but unethical or something that is ethical but illegal? Describe what sort of moral and
1. 7 answers
2. asked by bobbi
3. 829 views
The diameters of apples in a certain orchard are normally distributed with a mean of 4.77 inches and a standard deviation of
1. 0 answers
2. asked by Valerie
3. 811 views
Calculate the radial acceleration of an object at the equator of Jupiter (which takes 0.410 day to spin once), turning with the
1. 1 answer
2. asked by Carmen
3. 810 views

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