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2012
April

Questions Asked on April 30, 2012

Find the net torque on the wheel in the figure below about the axle through O perpendicular to the page, taking a = 11.0 cm and
1. 8 answers
2. asked by Anonymous
3. 26,844 views
SEQUENCE OF EVENTSTHE SEQUENCE OF EVENTS IN A STORY IS THE ORDER IN WHICH EVENTS HAPPEN. clue words, such as first,next,then,
1. 8 answers
2. asked by dw
3. 5,826 views
a 1.5kg cannon is mounted on top of a 2.0kg cart and loaded with a 52.7 gram ball. The cannon, car, and ball are moving forward
1. 1 answer
2. asked by Sarah
3. 4,844 views
Gil rolls a number cube 78 times. How many times can he expect to roll an odd number greater than 1??
1. 9 answers
2. asked by Jessica
3. 4,840 views
Terry, Barry, Larry, Jerry, and Perry are lined up in these positions midway through a track meet: Terry is 20 meters behind
1. 4 answers
2. asked by Anonymous
3. 4,684 views
An astronaut on the Moon attaches a small brass ball to a 1.00- m length of string and makes a simple pendulum. She times 15
1. 2 answers
2. asked by Kristie
3. 4,639 views
What beat frequencies are possible with tuning forks of frequencies 258, 263, and 267 Hz?
1. 3 answers
2. asked by Jim
3. 4,260 views
The Butterfly - Pavel FriedmannHe was the last. Truly the last. Such yellowness was bitter and blinding Like the sun’s tear
1. 6 answers
2. asked by bkue
3. 4,086 views
which of the following combinations is not suitable for making a buffer?h3po4 and nah2po4 na2co3 and nahco3 nh4cl and nh3
1. 1 answer
2. asked by Cayla
3. 3,988 views
1. Which resource makes up a quarter of Chile's exports? (1 point)fruitfish copper silver 2. Chilean produce is free of many
1. 36 answers
2. asked by kjbjhk
3. 3,743 views
A balloon has a circumference of 22in. Use the circumference to approximate the surface area of the balloon to the nearset
1. 3 answers
2. asked by lilman
3. 3,743 views
1. In the 1950s, in order to develop Brazil's interior, the government moved the capital from Rio de Janeiro and built a new one
1. 37 answers
2. asked by hsk
3. 3,669 views
You owe $1,350.00 on a credit card with a 14.25% APR. You pay $300.00 at the beginning of the month. How much interest do you
1. 2 answers
2. asked by Hanna
3. 3,326 views
A 0.5224g sample of an unknown monoprotic acid was titrated with 0.0998M of NaOH. The equivalence point of the titration occurs
1. 2 answers
2. asked by Confused
3. 3,323 views
What is the slope of the line described by the equation below?y - 9 = -2(x - 8)
1. 2 answers
2. asked by Anonymous
3. 3,007 views
Luis has $150,000 in his retirement account at his present company. Because he is assuming a position with another company, Luis
1. 3 answers
2. asked by Terri
3. 2,795 views
two planets of masses "m" and "M" respectively. have a center to center separation of "R".At what distance from the center of
1. 2 answers
2. asked by m sani
3. 2,485 views
A student reacts benzene,C6H6. with bromine. Br2. in an attempt to prepare bromobenzene.C6HSBr : C6H6 + Brl·---·-_·_-> C6HSBr
1. 2 answers
2. asked by Lareese
3. 2,434 views
Imagine a Rip van Winkle type who lives in the mountains. Just before going to sleep, he yells, "WAKE UP", and the sound echoes
1. 3 answers
2. asked by Jim
3. 2,431 views
An archer locks a 0.20kg arrow on a bowstring. Then the archer exerts an average force of 110N to draw the string back 0.60 m .
1. 1 answer
2. asked by Melissa
3. 2,287 views
translate the phrase into a mathematical expression and then simplify.nine times a number subtract twice the same number
1. 14 answers
2. asked by deb
3. 2,115 views
Rank the beat frequency from highest to lowest for the following pairs of sounds:a. 876 Hz, 871 Hz b. 786 Hz, 784 Hz c. 721 Hz,
1. 1 answer
2. asked by Jim
3. 2,097 views
Evaluate the expression 8a + b for the given variable.b = 3a – 2
1. 1 answer
2. asked by eric
3. 2,057 views
Vanessa pushes a box with 50 N of force. The box accelerates 2 m/s2 for 10 seconds. What is the mass of the box?
1. 3 answers
2. asked by Jessica
3. 1,999 views
The following data represent the number of flash drives sold per day at a local computer shop and their prices.Price (x) Units
1. 3 answers
2. asked by Ruth
3. 1,960 views
A stone has a mass of 3.40 g and is wedged into the tread of an automobile tire, as the drawing shows. The coefficient of static
1. 1 answer
2. asked by Anonymous
3. 1,908 views
a 6 foot tall man is standing near a tree on level ground .if the man shadow 4 feet long .how many feet tall is the tree?
1. 2 answers
2. asked by diamond
3. 1,894 views
The voltaic cell reaction NiO2(s)+4H^+(aq)+ 2Ag(s)-->Ni^2+(aq)+2H20(l)+ 2Ag^+ has a E cell= +2.48V. What will the cell potential
1. 3 answers
2. asked by Anonymous
3. 1,861 views
Consider the area between the graphs x+1y=12 and x+8=y2 . This area can be computed in two different ways using integralsFirst
1. 1 answer
2. asked by jasmineT
3. 1,858 views
Given cos x=2/3 and 3pi/2<x<2pi, find the exact value of cos2x?
1. 2 answers
2. asked by Yadira
3. 1,741 views
write an explicit formula for the sequence of 1/2, 3/7, 1/3, 5/19, 3/14
1. 1 answer
2. asked by jess
3. 1,724 views
A particle moves on the x-axis so that its velocity at any time t is given by v(t) = sin 2t. At t = 0, the particle is at the
1. 1 answer
2. asked by Naseba
3. 1,590 views
A manufacturer wants to increase the absorption capacity of a sponge. Based on past data, the average sponge could absorb 3.5
1. 1 answer
2. asked by Tom
3. 1,473 views
2C6H6(l) + 15O2 (g) ---> 12CO2 (g) + 6H2 (l)Calculate the deltaHrxn using standard heats of formations from Appendix C, paying
1. 1 answer
2. asked by Julio
3. 1,467 views
Suppose you make a tape recording of a male voice singing slowly and playing it back at double speed.What will happen to the
1. 1 answer
2. asked by AAA
3. 1,463 views
Write ksp for ba3(po4)2 in an aqueous solution
1. 1 answer
2. asked by Tina
3. 1,378 views
0.15g of sodium hydroxide (NaOH) pellets are dissolved in water to make 3.0L of solution. What is the pH of this solution?
1. 1 answer
2. asked by Rose M
3. 1,376 views
E6-9 (a,b)Tiger Golf Accessories sells golf shoes, gloves, and a laser-guided range-finder that measures distance. Shown below
1. 0 answers
2. asked by Dean
3. 1,363 views
A chair lift takes skiers to the top of a mountain that is 320 m high. The average mass of skiers complete with equipment is 85
1. 1 answer
2. asked by Melissa
3. 1,321 views
A. Explain the concept of NET MARKETING CONTRIBTION.B. What fundamental marketing strategies can a business pursue to grow
1. 0 answers
2. asked by Donny
3. 1,283 views
At a certain distance from the center of the Earth, a 4.00-kg object has a weight of 1.95 N. Calculate this distance.
1. 1 answer
2. asked by Stella
3. 1,271 views
How many grams of formic acid, HCOOH, must be added to 0.270L of 0.180M sodium formate, HCOONa, to yield a buffer solution with
1. 3 answers
2. asked by Cayla
3. 1,257 views
Which radioactive emanations have a charge of -1?beta particles alpha particles gamma rays neutrons
1. 3 answers
2. asked by david
3. 1,244 views
Spencer Company manufactures and sells three products. Relevant per unit data concerning each product are given below.Product A
1. 0 answers
2. asked by Dean
3. 1,219 views
a 1.00g sample of water is allowed to vaporize completely in a 10.0L container. What is the pressure of the water vapor at 150
1. 2 answers
2. asked by carter
3. 1,204 views
calculate the molarity of an acetic acid solution if 39.96 mL of the solution is needed to neutralize 136mL of 1.41 M sodium
1. 1 answer
2. asked by Randy
3. 1,199 views
which of the following is not spontaneous process at 25 degrees celsius and 1 atm pressure?ice melting iron rusting salt
1. 1 answer
2. asked by martina
3. 1,177 views
if 180 grams of ice at -123 degrees celsius is heated to steam at 125 degrees celsius, how much energy would it take?
1. 1 answer
2. asked by Anonymous
3. 1,172 views
An AM radio station broadcasts at 1060 kHz. Calculate the wavelength of the corresponding radio waves. How do I calculate this?
1. 1 answer
2. asked by Liz
3. 1,170 views
Name two institutions/community organizations that are involved in supporting or giving redress to environmental or human
1. 3 answers
2. asked by Mdhabazi
3. 1,165 views
How do value judgments cloud discussions of the legitimacy of violence in a political system
1. 1 answer
2. asked by Georgia
3. 1,161 views
name two institutions/community organizations that are involved in supporting or giving redress to these disesters . explain how
1. 5 answers
2. asked by shrevikah
3. 1,097 views
You are interested in opening a SNOW BIZ snow cone shack. The SNOW BIZ company who wants to franchise this business to you has
1. 1 answer
2. asked by Donny
3. 1,094 views
List all the possible rational zeros off(x)=3x^3-x^2+2x=2. Please help me. I don't understand how to do this. Can someone show
1. 1 answer
2. asked by Tabby
3. 1,091 views
what is the art and craft of communicating appropriately and persuasively, it is concerned with the way in which written, oral,
1. 2 answers
2. asked by Anonymous
3. 1,085 views
At rest, the human heart beats once every second. At the strongest part of thebeat, a person's blood pressure peaks at 120mmHg.
1. 1 answer
2. asked by Dave
3. 1,072 views
calculate the average percent1970 1980 1990 2000 17.2 17.3 17.1 16.6 do you add them all together then divide by 4
1. 3 answers
2. asked by deb
3. 1,035 views
A town is planning on using the water flowing through a river at a rate of 4.9 106 kg/s to carry away the heat from a new power
1. 2 answers
2. asked by opp
3. 1,028 views
The school superintendent would like to estimate the proportion of adults in the country that are in favor of an increased
1. 0 answers
2. asked by Kim
3. 1,016 views
a random sample of 20 prices for summer sleeping bags was taken with a sample mean $83.75 and a sample standard deviation of
1. 0 answers
2. asked by Anonymous
3. 1,014 views
In 10-15 lines critically discuss 5 ways in which the human or environmental problem impacts on the community
1. 2 answers
2. asked by Phuti manaka
3. 1,014 views
Why does a government place price ceilings, such as rent control, on some "essential" goods?I choose C am I right? A. to prevent
1. 3 answers
2. asked by Anonymous
3. 1,012 views
mark has 48 marbles.5/12 of them are blue and 1/2 of them are yellow.how many more yellow marbles than blue marbles does he
1. 2 answers
2. asked by lidia
3. 1,005 views
A juggler has a set of balls that she can toss into the air. If it takes her 0.2 s to transfer a ball from the receiving hand to
1. 0 answers
2. asked by Bob
3. 977 views
A baseball player reaches base 35% of the time. How many times can he expect to reach base in 850 at-bats?
1. 2 answers
2. asked by Jessica
3. 974 views
Is it true that all radio waves are faster than all sound waves—no exceptions? A) False always.B) True, in most common
1. 1 answer
2. asked by Kristie
3. 968 views
Identify one environmental factor that cause ill health,accidents,crises, and disasters within South Africa
1. 1 answer
2. asked by Lwazi
3. 956 views
Given that ΔGrxn>0, how do you explain that some of the borax actually dissolves at 25deg C?
1. 0 answers
2. asked by Jematormal91
3. 945 views
A rectangle with sides parallel to the coordinate axes is inscribed inthe ellipse x2/a2 + y2/b2 = 1: Find the largest possible
1. 0 answers
2. asked by pairika
3. 937 views
3. Your neighbor puts tiger on his flat roof shed. You and another neighbor argue over the ht of the tiger. At a distance of 80
1. 0 answers
2. asked by Nolan
3. 936 views
Determine the volume of nitrogen gas at a pressure of 3.00 atm if it had a volume of 400.0 mL at STP.
1. 1 answer
2. asked by Maria
3. 930 views
“How would you describe your own physical health at this time? Would you say physical health is—excellent, good, only fair,
1. 1 answer
2. asked by Eric
3. 930 views
Were these events that lead to political and social change in the 1960s until the 1980s?-Watergate -Iran Contra Affair -Vietnam
1. 1 answer
2. asked by Rebecca
3. 928 views
Neat pure ethanol C2H5OH has an enthalpy of vaporization of 39.3 Kj/mol, and a vapor pressure of 0.308 atm at 50 C. What is the
1. 1 answer
2. asked by Mima
3. 925 views
Na₂CO₃ (s) + 2HCL (ag) → 2NaCl (ag) + CO₂ + H₂O (l)If 4.25g of sodium carbonate is reacted completely with excess
1. 1 answer
2. asked by Shelby
3. 912 views
A particle of mass 5 kg is being towed at a constant speed of 6 m/s on a rough horizontal plane with coefficient of friction
1. 0 answers
2. asked by Jat
3. 911 views
Covered BridgesHow did covered bridges help travelers?
1. 1 answer
2. asked by Laruen
3. 909 views
Imagen Arquitectonica of Tijuana, Mexico is contemplating a major change in its cost structure. Currently, all of its drafting
1. 0 answers
2. asked by Dean
3. 908 views
a) Compute the future value of $1000 at 10% compounded annually for 6 years.
1. 1 answer
2. asked by Bill A
3. 903 views
a young Colorado spruce tree is growing at a rate of 20 cm per year. Currently, it is 244 cm tall. A 300 cm tall white spruce
1. 4 answers
2. asked by Hanu
3. 902 views
Two friends are at the local high school track, a circle measuring 440 yards for one complete lap. Abe can jog at 8.2 miles per
1. 2 answers
2. asked by Bob
3. 900 views
Solve the following system using substitution. Write the solution as an ordered pair, (a, b).b = a – 4 2a – 3b = -2
1. 3 answers
2. asked by Jorge
3. 892 views
How many grams of oxygen are collected in a reaction where 245 mL of oxygen gas is collected over water at a temperature of 25
1. 1 answer
2. asked by raul
3. 891 views
after an ice show, Michelle helps clear the props from the ice. Standing in her skates next to a potted artifical tree, she
1. 1 answer
2. asked by Sarah
3. 890 views
There are 2 red cars and 3 blue cars. The 5 cars contain a total of 12 people. No car has more than 4 people. Every car has at
1. 4 answers
2. asked by Anonymous
3. 890 views
How many grams of formic acid, HCOOH, must be added to 0.270L of 0.180M sodium formate, HCOONa, to yield a buffer solution with
1. 1 answer
2. asked by Kev
3. 886 views
The following data represent the number of flash drives sold per day at a local computer shop and their prices.Price (x) Units
1. 0 answers
2. asked by Paul
3. 884 views
pepi's pizza has a choice of thin crust or thick crust. The available toppings are mushrooms, onions, pepperoni and sausage.
1. 2 answers
2. asked by Ele
3. 878 views
In an unusual return to space, Astronaut Sally Ride is conducting repair work on the Hubble Space telescope. She throws a hammer
1. 1 answer
2. asked by Sarah
3. 877 views
Give example of each function:(a) degree 2; two zeros, the function decreases then increases (b) degree 3; three zeros, the
1. 0 answers
2. asked by tina
3. 872 views
Write the equation of the hyperbola for which the length of the transverse axis is 6 units long anf the foci are at (0,5) and
1. 1 answer
2. asked by Tabby
3. 872 views
50.0mL of 0.01M Ba(OH)2 is added to 150.0mL of 0.01M HNO3. What is the new pH of the solution?
1. 1 answer
2. asked by Zac
3. 849 views
in segment pt, l is the midpoint of pa and a is the midpoint of pn. if pn = 17 and la = 3.5, what is the length of nt?
1. 1 answer
2. asked by Corey
3. 843 views
Write and solve the differential equation that models the verbal statement. Using k for the constant of proportionalityThe rate
1. 0 answers
2. asked by ella
3. 817 views
If you double the frequency of sound, you also double which of the following?A) All of these.B) None of these.C) wavelength.D)
1. 2 answers
2. asked by Kristie
3. 809 views
The following data represent the number of flash drives sold per day at a local computer shop and their prices.Price (x) Units
1. 1 answer
2. asked by Ruth
3. 808 views
2. A spin balancer rotates the wheel of the car at 480 revolutions per min. if the diameter of the wheel is 26 in what road
1. 0 answers
2. asked by Nolan
3. 787 views
The volume of grains in a silo at a particular time (measured in hours) is givenby V (t) = 4t(3-t)m^3 Find the rate of change of
1. 1 answer
2. asked by Dave
3. 776 views
which will become a buffer in 1L of H2O?a) 0.3 mole KOH & 0.3 mole HBr b) 0.5 mole NH3 & 0.5 mole HCl c) 0.2 mole NaCl & 0.3
1. 1 answer
2. asked by Zac
3. 769 views
A uranium nucleus 238U may stay in one piecefor billions of years, but sooner or later it de- cays into an particle of mass
1. 1 answer
2. asked by kate
3. 759 views

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