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Questions Asked on April 3, 2013

a tennis ball is thrown straight up with an initial velocity of 22.5 m/s. it is caught at the same distance above the ground.a).
1. 4 answers
2. asked by confused
3. 17,699 views
why is 1/6 greater than 1/8 but less than 1/3? EXPLAIN
1. 5 answers
2. asked by IRIN
3. 7,733 views
the length of a photograph is 1 cm less than twice the width. the area is 28 cm squared. find the dimensions of the photograph.
1. 1 answer
2. asked by sally
3. 4,270 views
1. Which of the following is a demographic characteristic of an audience?A. Size B. Lifestyle C. Gender D. Values is it C 2.
1. 2 answers
2. asked by Amy
3. 4,102 views
PLEASE HELP!!!(: There are 9 red gum balls, 5 green gum balls, 8 yellow gum balls, and 8 blue gum balls in a machine. Find
1. 7 answers
2. asked by mckayela
3. 3,906 views
Calculate the heat released when 454 g of steam at 100.0C condenses and then cools to 30.0C. State your answer in calories.
1. 3 answers
2. asked by Ray
3. 3,014 views
"Jack has a collection of nickels and quarters. He has a total of 50 coins worth $10.30. How many of each coin does he have?" I
1. 8 answers
2. asked by Joci
3. 2,994 views
A merchant visited 3 fairs. At the first, he doubled his money and spent $30; at the second he tripled his money and spent $54;
1. 2 answers
2. asked by Barb
3. 2,818 views
30.0 mL of 0.10 M Ca(NO3)2 and 15.0 mL of 0.20 M Na3PO4 solutions are mixed. After the reaction is complete, which of these ions
1. 1 answer
2. asked by Ash
3. 2,564 views
Draw the hierarchy chart and design the logic for a program that calculates the projected cost of an automobile trip. Assume
1. 3 answers
2. asked by Matt
3. 2,400 views
A golden rectangle is 32 cm long. The ratio of length to width is (1 + sq rt 5)/2. What is the width of the rectangle in
1. 3 answers
2. asked by Jane
3. 2,026 views
A 15.67gsample of hydrate of magnesium carbonate was carefully heated, without decomposing the carbonate to drive off water. The
1. 1 answer
2. asked by mulaudzi
3. 2,021 views
2CH3OH(l) + 3O2(g) → 2CO2(g) + 4H2O(l) ΔH° = -1199 kJHow many kilojoules are liberated by the combustion of 56.4 g of
1. 1 answer
2. asked by Victoria
3. 1,873 views
Two fair dice, one blue and one red, are tossed, and the up faceon each die is recorded. Define the following events: E : { The
1. 1 answer
2. asked by urgentneedhelp
3. 1,866 views
1. Effective public speaking is:A. audience-centered. B. message-centered. C. speaker-centered. D. channel-centered. is it A 2.
1. 3 answers
2. asked by Amy
3. 1,861 views
17. Use equal intervals to make a frequency table for the average number of movies per person. You do not need to show tally
1. 11 answers
2. asked by Jman
3. 1,803 views
What is the maximum amount of ethanol (in millimoles) that could theoretically be produced under the following conditions?Condit
1. 2 answers
2. asked by Mark
3. 1,786 views
Evaluate the following expressions. Your answer must be an angle in radians and in the interval [(-pi/2),(pi/2)] .(a)
1. 1 answer
2. asked by Anonymous
3. 1,727 views
At Allied electronics, production has begun on x-15 computer chip. The total revenue function is given by. R(x)=47x-0.3x^2 and
1. 1 answer
2. asked by Anonymous
3. 1,707 views
Triangle Lmn is similar to triangle xyz. Triangle LMN has a side of 5 and 3. The scale factor of triangle Lmn to triangle xyz is
1. 3 answers
2. asked by Bre
3. 1,657 views
Need help with one more question.Which best describes a statistical question? a. a question that contains numbers b. a question
1. 3 answers
2. asked by Brandi
3. 1,604 views
The school parking lot had room for thirty cars. If all the spaces except six were filled, what fraction of the parking lot was
1. 5 answers
2. asked by Anonymous
3. 1,569 views
a rancher has 4000 feet of fencing for constructing a rectangular corral. one side of the corral will be formed by a barn and
1. 1 answer
2. asked by Lufy
3. 1,498 views
what is the implied power expressed by the necessary and proper clause in the constitutiona congress's ability to make laws is
1. 8 answers
2. asked by john
3. 1,488 views
Balance the following redox reaction in acidic and basic solutions:Fe(OH)2(s) + O2(g) --> Fe(OH)3(s) These are the steps my
1. 0 answers
2. asked by Emily
3. 1,458 views
30 flasks--10 full, 10 half-empty, and 10 entirely empty--are to be divided among 3 sons so that flasks and contents should be
1. 1 answer
2. asked by Barb
3. 1,434 views
What effect on the molar mass of the unknown acid would each of the followinghave-that is-would it make the calculated molar
1. 1 answer
2. asked by Sean
3. 1,429 views
A solid steel cylinder is standing (on one of its ends) vertically on the floor. The length of the cylinder is 3.4 m and its
1. 0 answers
2. asked by Dee
3. 1,389 views
Let R denote the circular region bounded by x^2+y^2 = 36. The lines x=4 and y=3 partition R into four regions R1, R2 ,R3 , and
1. 2 answers
2. asked by Knights
3. 1,368 views
Urgent... Someone please help!!Can someone please check to see if I am doing these correctly, I have a test tomorrow... Thank
1. 0 answers
2. asked by Kishwa
3. 1,262 views
Why does changing the shape of an object have no effect on the density of that object?Because it's still the same item all you
1. 1 answer
2. asked by Jerald
3. 1,239 views
A board on the wall in Jeremy's class has 4 right angles, 4 equal sides, and 2 pairs of parallel sides. Which quadrilateral is
1. 1 answer
2. asked by Ms.Vargas
3. 1,238 views
solving problem the chicago public school system has about 680 schools about 130 of the schools will be closed. if the five
1. 1 answer
2. asked by lilly
3. 1,236 views
Attitudes, beliefs, values, and motivation are characteristics of:A. psychographics. B. demographics. C. the speaker’s
1. 1 answer
2. asked by Amy
3. 1,204 views
Which word or phrase is an appositive in the sentence?When Sandy met John—a scientist and critic—she fell in love with him.
1. 6 answers
2. asked by selena
3. 1,166 views
1.How do acid-base reactions differ from oxidation-reduction (or "redox") reactions?Answer Acid-base reactions involve an
1. 0 answers
2. asked by asap
3. 1,163 views
INFORMATION:Kathy and Bill collided at an intersection. The police learned the mass of the truck is 3200 kg and the mass of the
1. 1 answer
2. asked by Tori
3. 1,149 views
A goat is tethered (tied up) to a stake in the ground with a 5 m rope. The goat can graze to the full length of the rope a full
1. 2 answers
2. asked by Taliea
3. 1,146 views
write a program C++ program and Use a recursive function that finds the n-th term using the following rule: tn=3tn-1+12tn-2 .ple
1. 3 answers
2. asked by Riana
3. 1,127 views
Identify the initial value and growth or decay factor in each of the following exponential functions:a) y= 350 x 5^x b) Q= 25000
1. 1 answer
2. asked by kristy
3. 1,102 views
The length of a rectangle is 4m more than the width. The area of the rectangle is 45 m squared. Find the length and width.Please
1. 5 answers
2. asked by suzy
3. 1,076 views
1. When your speech adds to your listeners’ knowledge, it is meant to:A. inform. B. persuade. C. entertain. D. celebrate. is
1. 2 answers
2. asked by Amy
3. 1,054 views
Danny has 75 marbles in red color and blue color. He found out number of red marbles is 15 less than twice of the blue marbles.
1. 1 answer
2. asked by valerie
3. 1,033 views
8. The Chicago Public School system has about 680 schools. About 130 of the schools will be closed. If five schools are chosen
1. 1 answer
2. asked by Jeffrey
3. 1,023 views
The sides of a rectangle are in a ratio. What is the length of the shorter sides of the rectangle if its perimeter is 42 cm?
1. 2 answers
2. asked by Anonymous
3. 1,013 views
Calculate the pH of a buffer using dihydrogen phosphate and it's conjugate base. The concentration of weak acid is 0.23 M and
1. 1 answer
2. asked by Anonymous
3. 1,004 views
How many joules of energy are needed to change 275 g of water from 15°C to steam at 100.°C?
1. 1 answer
2. asked by B
3. 997 views
1. A speaker talking about the benefits of cosmetic surgery to an audience primarily of women is appealing to which level of
1. 1 answer
2. asked by Amy
3. 992 views
A copper cube, 0.31 m on a side, is subjected to two shearing forces, each which has a magnitude F = 6.40 106 N (see the
1. 1 answer
2. asked by Dee
3. 974 views
The average price of gasoline lately has been hovering lately at $3.80. What is the standard deviation if the probability that a
1. 0 answers
2. asked by Evie
3. 965 views
What mass of sodium oxide is produced from 4.23 grams of sodium and 20 liters of oxygen gas?
1. 1 answer
2. asked by Amanda
3. 956 views
Superbats, Inc., manufactures two different quality of wood baseball bats, the Wallbanger and the Dingbat. The Wallbanger takes
1. 2 answers
2. asked by kim
3. 948 views
Calculate the pH after 0.010 mol gaseous HCl is added to 250.0 mL of each of the following buffered solutions:a. .050 M NH3/.15
1. 1 answer
2. asked by Kristen
3. 940 views
7. No work is done by gravity on a bowling ball resting or moving on a bowling alley because the force of gravity on the ball
1. 0 answers
2. asked by Anonymous
3. 932 views
Rachel cut a length of rope 4 1/3 meters into two pieces. The length of one piece of rope is 2 1/2 meters. What is the length of
1. 7 answers
2. asked by Anonymous
3. 927 views
At 10°C below the melting point of aluminum, 0.08% of the atom sites are vacant. At 484°C only 0.01% are vacant. Given this
1. 2 answers
2. asked by adex
3. 924 views
An activationenergy of 2.0 eV is required to form a vacancy in a metal. At 800°C there is one vacancy for every 10-4 atoms. At
1. 1 answer
2. asked by adex
3. 906 views
1. Which of the following is equivalent to 8 2/5?a.42/5 b.34/5 c.39/5 d.24/5 2. Which of the following fractions is between 3/5
1. 3 answers
2. asked by Adaija
3. 905 views
Three machines turn out all the products in a factory, with the first machine producing 40% of the products, the second machine
1. 0 answers
2. asked by Tim
3. 902 views
the perimeter of a triangle is 79.75 inches. the second side of the triangle is half as big as the first side. the third side is
1. 1 answer
2. asked by chris
3. 896 views
In a constant-pressure calorimeter, 75.0 mL of 0.950 M H2SO4 was added to 75.0 mL of 0.460 M NaOH. The reaction caused the
1. 0 answers
2. asked by Lyndzey
3. 892 views
1. If a student forms CaCO3 from the presence of carbon dioxide, but continued with the trial anyway, howwould this affect
1. 1 answer
2. asked by Josh
3. 890 views
Determine the number of particles in this sample. Identify the unit as a formula unit or a molecule. 58 g of chromium (III)
1. 0 answers
2. asked by Jenny
3. 887 views
Maria has a slice of pizza that is 1/6 of the pizza. Ben has a slice of pizza that is 1/3 of the pizza. Maria's slice is bigger.
1. 2 answers
2. asked by Bralyn
3. 884 views
A newly designed international airport is planning to label its gates. Each gate must be assigned a letter from the alphabet
1. 1 answer
2. asked by Bob
3. 875 views
Operations with radical expressions:Simplify each quotient 7/sq rt 2 - sq rt 3 Please solve and explain how you did it. What do
1. 1 answer
2. asked by Jane
3. 869 views
Find (f°g)(2) when f(x)=5x+9 and g(x)=1/xThanks
1. 0 answers
2. asked by Anonymous
3. 865 views
4. A 5.309 g antacid tablet, with CaCO3 as the active ingredient, was mixed was 30.0 mL of 0.831 M HCl.It took 15.3 mL of 0.7034
1. 0 answers
2. asked by Josh
3. 864 views
find the sum of each finite arithmetic series 8+9+10+...+15
1. 1 answer
2. asked by Erica
3. 846 views
(6p + 4q)(-2p + 9q)simplify help
1. 1 answer
2. asked by ear
3. 846 views
A student used 5.06g of copper sulphate pentahydrate and salicyclic acid in the performance of the experiment. The student
1. 1 answer
2. asked by damola
3. 842 views
can u help me with a an acrostic poem for nervous system?
1. 1 answer
2. asked by mia
3. 839 views
Calculate the new molarity when 150 mL of water is added to 125 mL of 8.55 M HBr.
1. 0 answers
2. asked by Alex
3. 837 views
Three forces act on an object at the same time. F1 = 100. N at 30.0degrees north of east, F2 = 200. N at 45.0degrees north of
1. 0 answers
2. asked by Rosa
3. 836 views
Let f(x) = 1+3sin2x be a function, determin the amplitude and the period of the function,
1. 1 answer
2. asked by mathews
3. 823 views
Find the density of a 5.8- solid cylinder that is 15 cm tall with a radius of 5.0 .
1. 1 answer
2. asked by Ericca
3. 819 views
70x-1=10x-70
1. 1 answer
2. asked by Anonymous
3. 809 views
The ground state wavefunction for a particle in a shallow potential well in 1 dimension is of the form: Ae^(−|x|/2d). Given
1. 0 answers
2. asked by qwerty
3. 796 views
Some antacid tablets actually contain a mixture of calcium carbonate and magnesium hydroxide (thoughthey usually have the same
1. 0 answers
2. asked by Jim
3. 768 views
by cutting away identical squares from each corner of a rectangular piece of cardboard and folding up the resulting flaps, an
1. 0 answers
2. asked by sasha
3. 759 views
A titration is performed by adding 0.124 M KOH to 40 mL of 0.159 M HNO3.a) Calculate the pH before addition of any KOH. b)
1. 1 answer
2. asked by Antonio
3. 755 views
Over a three-year period, the total interest paid on a $4500 loan was $1620. What was the interest rate?
1. 1 answer
2. asked by Jeconiah
3. 744 views
An object at rest begins movinghorizontally on the x-axis, starting at position x(t) = 0 feet at time t = 0 seconds.Suppose,
1. 0 answers
2. asked by Mike
3. 741 views
Use a graph of f(x) = 3 e^{-8 x^2} to estimate the x-values of any critical points and inflection points of f(x). critical
1. 0 answers
2. asked by sam
3. 731 views
Three forces act on an object at the same time. F1 = 10.0 N 50.0degrees north of east, F2 = 15.0 N 25.0degrees south of west,
1. 0 answers
2. asked by Rosa
3. 728 views
Light with λ = 530 nm passes through a single slit and then illuminates a screen 9.0 m away. If the distance on the screen from
1. 1 answer
2. asked by Madison
3. 726 views
I have a few problems I need some help with.The first is Evaluate the sum. 1. There is an E like symbol on the top is 10 on the
1. 1 answer
2. asked by Jess
3. 725 views
At 298 K, deltaGo = - 6.36 kJ for the reaction:2N2O(g) + 3O2(g) ↔ 2N2O4(g) Calculate deltaG (in kJ) at 298 K when PN2O = 3.12
1. 0 answers
2. asked by Anonymous
3. 722 views
A rock is dropped from a riverbank that is 4 feet above the surface of the river. After how many seconds does the rock hit the
1. 1 answer
2. asked by Mary
3. 703 views
2.00 L of 0.800 M NaNO3 must be prepareds from a solution which 1.50 M in concentration. How many mL of the 1.50 M are required
1. 1 answer
2. asked by Jessica
3. 702 views
The specific heat of zinc is 0.096 cal/(g °C). Determine the energy required to raise the temperature of 26.1 g of zinc from
1. 0 answers
2. asked by B
3. 701 views
Name a few pharmacopoeias.
1. 0 answers
2. asked by Wube
3. 693 views
(c+x)squared----------------- 2y c= -8 x= 10 y= 6
1. 1 answer
2. asked by Joel
3. 687 views
A 1.2kg object is placed on a frictionless table and is attached to a hanging mass using a light string over a frictionless
1. 1 answer
2. asked by maddi
3. 679 views
How do you calculate the standard enthalpy change for the reaction of an aqueous solution of barium hydroxide, Ba(OH)2, with an
1. 0 answers
2. asked by Lisa
3. 677 views
How do you find the exact value of cos -7pi/12 without using a calculator to change radian to degree
1. 1 answer
2. asked by Anonymous
3. 676 views
T and S share a digital music player that randomly selects songs to play.Together T and S have loaded 3476 songs. T and S want
1. 0 answers
2. asked by Nabil
3. 657 views
Sorry for bugging you guys..But can someone proof read this paragraph. Ohio Sen. Rob Portman is the first Republican senator to
1. 1 answer
2. asked by Blaze
3. 638 views
The median of the following incomplete frequency distribution is 10:x= 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 f= 0 , 2 , 5 , 6, 3 , 1 , 2
1. 0 answers
2. asked by anoynomous
3. 636 views
you are looking for a safe place to put 30,000.00 for one yr. Bank A offers 2.46% interest rate continuously. Bank B offers
1. 2 answers
2. asked by Kat
3. 632 views

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