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2011
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Questions Asked on March 2, 2011

A 77 g arrow is fired from a bow whose string exerts an average force of 95 N on the arrow over a distance of 81 cm. What is the
1. 1 answer
2. asked by Anup
3. 5,154 views
A hot-air balloon of mass 200 kg is descending vertically with downward acceleration of magnitude 1.2 m/s2. How much mass
1. 2 answers
2. asked by karim
3. 3,783 views
True or false, A solution of a system of linear equations is an ordered pair that satisfies one of the equations in the system?
1. 3 answers
2. asked by Megan Ruff
3. 3,772 views
a refrigerator is 3 ft wide, 2.5ft deep,and 6ft high. The walls and other parts other refrigerator take up to 20ft. How much
1. 4 answers
2. asked by justin
3. 3,205 views
A wheelchair ramp has a rise from the ground of 1 foot. The ramp has a length of 14 feet. To the nearest degree, find the angle
1. 1 answer
2. asked by Keegan
3. 2,956 views
1 + tan^2 (5) - csc^2 (85) = ?Would this equal 0 could someone explain this to me and the correct answer?
1. 7 answers
2. asked by Amy
3. 2,764 views
Magnesium powder reacts with steam to form magnesium hydroxide and hydrogen gas.a) Write a balanced chemical equation for this
1. 3 answers
2. asked by Nick
3. 2,516 views
The doubling period of a baterial population is 20 minutes. At time t=100 minutes, the baterial population was 80000. What was
1. 1 answer
2. asked by katrina
3. 2,460 views
A power plant has a power output of 1055 MW and operates with an efficiency of 33.0 percent. Excess energy is carried away as
1. 1 answer
2. asked by ricki
3. 2,347 views
A bacteria culture initially contains 1500 bacteria and doubles every half hour.a) Find an expression for the number of bacteria
1. 1 answer
2. asked by josh
3. 2,309 views
Tennis balls withal diameter of 2.5 in. Are sold in cans of three. The can is a cylinder. What is the volume of the space in the
1. 2 answers
2. asked by Please Help
3. 2,132 views
is 5/8 greater than less than or equal to 58%
1. 4 answers
2. asked by Anonymous
3. 2,130 views
Simplify the following expression, and rewrite it in an equivalent form with positive exponents.-14xy / 42x^5y^8
1. 6 answers
2. asked by Jackster
3. 1,970 views
A basketball team scored 48 baskets in 1 game. Each basket was worth one or two points. If the team scored 84 points, how many
1. 2 answers
2. asked by Emily
3. 1,960 views
Lance threw a ball straight up into the air. The ball's gravitational potential energy at its peak height was 0.4 joules, and
1. 2 answers
2. asked by Stephanie
3. 1,713 views
equation: 4NH3(g) + 5O2(g) -> 4NO(g) + 6H2O(g)What mass of O2 is needed to produce 0.563g of NO? I think the answer is 750g but
1. 2 answers
2. asked by TJ
3. 1,700 views
A 150KG STEEL ROD IN A BUILDING UNDER CONSTRUCTION SUPPORTS A LOAD OF 6050KG. DURING THE DSY THE RODS TEMP. INCREASES FROM 22C
1. 1 answer
2. asked by ricki
3. 1,696 views
I need help classifying these as physical or chemical changes!1. sodium metal exposed to air turns dark gray. 2. steam in a test
1. 1 answer
2. asked by Emily Grossman
3. 1,626 views
cot(40) - ((sin(50))/(sin(40)) = ?I thought the answer might be 0, but I'm not quite sure. please provide steps, too.
1. 1 answer
2. asked by Amy
3. 1,575 views
How heavy a load (pounds) is needed to pull apart pieces of Douglas fir 4 inches long and 1.5 inches square? Here are data from
1. 1 answer
2. asked by Yesenia
3. 1,549 views
IN rhombus ABCD, measure of angle DAB equals two times the measure of angle ADC and CB equals 6. Find measure of angle ACD
1. 1 answer
2. asked by Anonymous
3. 1,549 views
Find the rule for 9,16.8, 24.6, 32.4
1. 3 answers
2. asked by Lola
3. 1,498 views
A beaker contains 100 grams of 1.20 M NaCl. If you transfer 50% of the solution to another beaker, what is the molarity of the
1. 1 answer
2. asked by Toni Jones
3. 1,485 views
Indicate the type of crystal (molecular, metallic, covalent-network, or ionic) each of the following would form upon
1. 1 answer
2. asked by Rebekah
3. 1,458 views
Brianna Moore is an accountant for New World Pharmaceuticals. Her duties include tracking research and development spending in
1. 1 answer
2. asked by Candace
3. 1,441 views
I need help classifying these as physical and chemical properties!1. sodium metal in chlorine gas releases luster. 2. sodium
1. 0 answers
2. asked by Emily Grossman
3. 1,431 views
In an intelligence test administered to 1000 childrens the average score is 42 and standard deviation 24.find (i)the number
1. 2 answers
2. asked by noopur
3. 1,427 views
Aaron Burr hated Alexander Hamilton because Hamiltona. doubted Burr's character, and sabotaged his political aspirations. b. did
1. 5 answers
2. asked by HELP ME
3. 1,352 views
write a numerical expression for the phrase & simplify 129 less than -34
1. 4 answers
2. asked by Tammy
3. 1,338 views
I need help with homophone for a couple sentences I am stuck on.Sentence 1: The _____ in that phone booth has a shirt with a
1. 2 answers
2. asked by Kameron
3. 1,336 views
A hot-air balloon of mass 200 kg is descending vertically with downward acceleration of magnitude 1.2 m/s2. How much mass
1. 0 answers
2. asked by karim
3. 1,303 views
A 6.0 L flask contains a mixture of methane, argon and helium at 45 degrees C and 1.75 am. If the mole fractions of helium and
1. 2 answers
2. asked by Katie
3. 1,296 views
A 40 mL sample of 0.25 M NaCHOO istitrated with 0.2 M HCl. What is the pH of the solution after 140 mL of HCl has been added?
1. 1 answer
2. asked by Eddy
3. 1,288 views
Ten years ago, Levin Inc. earned $0.50 per share. Its earnings this year were $2.20. What was the growth rate in Levin's
1. 1 answer
2. asked by Corey
3. 1,288 views
2.) Substances A, B, and C can all act as oxidizing agents. In solution, A is green, B is red, and C is yellow. In the reactions
1. 0 answers
2. asked by kate
3. 1,237 views
2.) Substances A, B, and C can all act as oxidizing agents. In solution, A is green, B is red, and C is yellow. In the reactions
1. 2 answers
2. asked by kate
3. 1,220 views
You have a sample of NaCl that contains 100 mg/ml NaCl. You are trying to perform an reaction that requires 10ml of 20 mg/ml.
1. 0 answers
2. asked by mina
3. 1,207 views
Segments with the lengths of 6, 8, and 10 units will form what type of triangle?
1. 2 answers
2. asked by moody
3. 1,188 views
Please help!Suppose that a 400 gram copper object (specific heat 0.092 cal/g/degrees Celsius) receives 900 cal. of heat. What is
1. 1 answer
2. asked by A
3. 1,179 views
a jet flies with wind at 1100 km/h and against the same wind at 750 km/h.Find the rate of the wind and the speed of the jet in
1. 2 answers
2. asked by natalia
3. 1,166 views
Last year's computer model is on sale for $799. You can add more memory to the computer. Each chip of 8 megabytes of memory
1. 2 answers
2. asked by steven
3. 1,148 views
Liann works in the olde tyme Soda shoppe. The shop sells milkshakes, double milkshakes, and triple milkshakes. A shake uses 1/8
1. 2 answers
2. asked by ct
3. 1,124 views
A 120- foot long rope is cut into three pieces the first piece of rope is twice as long as the second piece of rope the third
1. 1 answer
2. asked by Anonymous
3. 1,098 views
Equation: 4NH3(g) + 5O2(g) -> 4NO(g) + 6H2O(g)question: What volume of NH3 is needed to react with 71.6 liters of oxygen?
1. 2 answers
2. asked by tyler
3. 1,081 views
A reaction mixture is in a 5.4 L flask at 25 oC initially contains only 7.64 grams of acetic acid. (CH3COOH). Set up your I.C.E.
1. 1 answer
2. asked by juan
3. 1,078 views
Earn al least $150 a week. $10 per hour working for a farmer. $5 per hour babysitting. can work at most 25 hours per week. Write
1. 1 answer
2. asked by Mary
3. 1,076 views
A question in Campbell's 8th edition study guide for AP Biology says:A multifactorial disorder _. Answer: has a collection of
1. 1 answer
2. asked by Jake
3. 1,065 views
Define incidence rate and incidence proportion. Identify the differences
1. 0 answers
2. asked by maryjane
3. 1,051 views
.045 please convert to a fraction and percent
1. 7 answers
2. asked by linda
3. 1,039 views
a 100.0 gram metal sample is heated to a temperature of 110 degrees celcius then placed into a calorimeter containing 100.0 r of
1. 3 answers
2. asked by jason wolthen
3. 1,032 views
Use the distributive property to rewrite this expression, then simplify the new expression if possible; -4(z+3)
1. 1 answer
2. asked by Tammy
3. 1,031 views
a truck has a diameter of 25 inches. a tack is stuck on the bottom of the tire. if the truck travels one mile, how many times
1. 1 answer
2. asked by Anonymous
3. 1,025 views
When a hurricane or flood or a pandemic strikes a country, who is most likely to respond first? Which economic system is the
1. 1 answer
2. asked by Shurneke
3. 1,020 views
I have two questions:If a parallelogram is a rhombus, then the diagonals are congruent- I don't think so in all cases-they can
1. 1 answer
2. asked by Mellie
3. 1,018 views
Suppose that y≤3⁢x, 2⁢x≤y and 13⁢x+13⁢y≤1 together with 0≤x, 0≤y.Determine a value of k so that the function
1. 3 answers
2. asked by Megan
3. 1,016 views
in the triangle ABC , AD ray bisects the exterior angle of the triangle at A and intersects CB ray at D . if AB = 6 cm , AC = 8
1. 0 answers
2. asked by Hossam Nassar
3. 1,000 views
I have multiple questions like the following and need help on how to work out the answer of one because our book does not cover
1. 0 answers
2. asked by allison
3. 999 views
a) What is the minimum work needed to push a 900 kg car 410 m up a 17.5° incline with zero friction?If i know this answer is
1. 1 answer
2. asked by bill lin
3. 996 views
what is commutative testimony?
1. 0 answers
2. asked by brownley
3. 977 views
A pair of students performs an experiment in which they collect 27 g CaO from the decomposition of 41 g CaCO3. Are these results
1. 4 answers
2. asked by joe
3. 948 views
I was walking through my local home supply store the other day carrying a 10 ft length of plastic pipe. The pipe was horizontal
1. 1 answer
2. asked by Eliza
3. 938 views
a circular coin has radius of 8.2 what is the circumference rounded to the nearest tenth? please show work
1. 1 answer
2. asked by daisy
3. 937 views
PREPOSITIONS1)Er setzt sich _______den Tisch 2)paul steht _________der Wohnungstu 3) schickn Sie die Briefe _____Leiter 4)Kann
1. 0 answers
2. asked by vera
3. 937 views
Sulfur dioxide gas reacts with hydrogen sulfide gas to produce elemental sulfur (S8) and water vapor. Predict the temperature
1. 1 answer
2. asked by Josh
3. 915 views
a percan pie 40 ft in diameter was baked in oklahoma,in 1989. What was the pie circumference ,rounded to the nearest foot? plz
1. 1 answer
2. asked by daisy
3. 893 views
One direction of movement of buildings from earthquake vibrations is?Hint...its a 9 letter word
1. 1 answer
2. asked by linda
3. 886 views
1 + tan^2 (5) - csc^2 (85) = ?Would this equal 0 could someone explain this to me and the correct answer?
1. 1 answer
2. asked by Amy
3. 886 views
The perimeter os a tennis court is 228 feet and the lenght is 42 feet longer than the width. Write a linear system. Let w be the
1. 1 answer
2. asked by Mary
3. 885 views
Vector A points in the negative y direction and has a magnitude of 6 units. Vector B has twice the magnitude and points in the
1. 1 answer
2. asked by Brittany
3. 883 views
Can anyone explain this to me, it was on my exam and i don't get it ;A 14.0 kg crate is pulled up a rough incline with an
1. 1 answer
2. asked by Johnnie
3. 882 views
what is another method for classifying bacteria? (other than shape or cell wall structure).thanks! :)
1. 0 answers
2. asked by Josh
3. 880 views
A curve of radius 40 m is banked so that a 1070 kg car traveling at 60 km/h can round it even if the road is so icy that the
1. 1 answer
2. asked by Johnnie
3. 877 views
a woman exerts a horizontal force of 25 lb on a crate as she pushes it up a ramp that is 10 ft long and iclined at an angle of
1. 0 answers
2. asked by Anonymous
3. 869 views
the angle with 60 degrees has a reference angle of 60 degrees?
1. 2 answers
2. asked by Amy
3. 866 views
what is the number of calories of heat energy released when 25 grams of water is cooled from 20 C to 10 C?
1. 2 answers
2. asked by Anonymous
3. 861 views
the american dream rising from "rags to riches" was reflected ina. mark twain' novel the gilded age b. novels of social protests
1. 6 answers
2. asked by susulove
3. 850 views
What volume at STP would be required to react with 0.100 mol of hydrogen to produce ammonia?
1. 1 answer
2. asked by Anonymous
3. 847 views
using equation: 2Fe(OH)3 + 3H2SO4 -> Fe2(SO4)3 + 6H2Oquestion: How many Molecules of H2O can be made from 9.21 x 10^22 molecules
1. 1 answer
2. asked by TJ
3. 846 views
1. Find the slope m and an equation of the tangent line to the graph of the function f a the point (2, 38)2. Find an equation of
1. 1 answer
2. asked by Bethany
3. 837 views
Use scientific notation to divide the following two numbers. Express the answer using scientific notation; retain at least three
1. 2 answers
2. asked by Jackster
3. 816 views
what is the verb poner in the preterite "yo" form?
1. 1 answer
2. asked by Ed
3. 815 views
Find the rule for the sequence:4.2, 2.6, 1, -.06, -2.2
1. 2 answers
2. asked by sam
3. 803 views
PREPOSITIONS1)Er setzt sich _______den Tisch 2)paul steht _________der Wohnungstür 3) schickn Sie die Briefe _____Leiter 4)Kann
1. 4 answers
2. asked by vera
3. 802 views
14/25 please convert to a decimal and percent
1. 3 answers
2. asked by linda
3. 780 views
The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures students' study habits and attitudes
1. 0 answers
2. asked by Anonymous
3. 779 views
How many solutions does the following system have:6x - 3y = 9 2x - y = 3 Explain how to determine the number of solutions
1. 1 answer
2. asked by peg
3. 772 views
CH3-COOH-CH-COO-3-hydroxybutyrate or β-hydroxybutyrate I have no idea why this is named what it is named. I know that the COO
1. 2 answers
2. asked by Lena
3. 766 views
How many grams of oxygen are required to produce 56.0 g water vapor?
1. 1 answer
2. asked by Megan
3. 755 views
Posted by English on Sunday, February 27, 2011 at 7:26pm.1. You can read whatever magazine you like. 2. You can read which
1. 1 answer
2. asked by rfvv
3. 750 views
2Fe(OH)3 + 3H2SO4 -> Fe2(SO4)3 + 6H2)Question: How many molecules of H2O can be made from 9.21 x 10^22 molecules of H2SO4?
1. 1 answer
2. asked by tyler
3. 743 views
if a octagon has a perimeter of 88 centimeters, what is the measure of each of its sides?
1. 1 answer
2. asked by michell
3. 743 views
¿Qué quieres comer hoy?Would I answer this-Quiero comer en el restaurante hoy. Thank you
1. 3 answers
2. asked by Mellie
3. 734 views
a circular track has a radius of 100ft. elena wants to run 2 miles. There are 5,280 ft in a mile.Can you find the circumference
1. 1 answer
2. asked by daisy
3. 733 views
WHAT CONDITIONS ARE NECESSARY FOR A HEAT ENGINE TO HAVE AN EFFICIENCY OF 1.0? AND HOW DO THE TEMP OF COMBUSTION AND THE TEMP. OF
1. 0 answers
2. asked by ricki
3. 732 views
XYZ bonds have a 7.60 percent coupon and pay interest annually. The face value is $1,000 and the current market price is
1. 1 answer
2. asked by Janiyah
3. 725 views
The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures students' study habits and attitudes
1. 0 answers
2. asked by Yesenia
3. 723 views
Year 2003 2004 2005 2006Populatation 22.12 22.49 22.86 23.41 A. divide the population for each year by the population in the
1. 2 answers
2. asked by Amber
3. 711 views
Please Help!An object at 20 degrees Celsius with heat capacity 100 calories/Celsius is placed in 40 grams of water at 100
1. 1 answer
2. asked by A
3. 710 views
What answers this definition: A polynomial, you would write the polynomial as a product of factors.
1. 2 answers
2. asked by Megan Ruff
3. 708 views
please help. a pitcher throws a .50kg ball of clay at a blck of woo. the clay sticks to the wood on impact, and thier joint
1. 0 answers
2. asked by liz
3. 701 views

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