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2011
April

Questions Asked on April 15, 2011

A particle moves with its position given by x=cos(2t) and y=sin(t), where positions are given in feet from the origin and time t
1. 1 answer
2. asked by Catherine
3. 6,824 views
Consider the parameterization of the unit circle given by x=cos(4t^2−t), y=sin(4t^2−t) for t in (−InF, INF). Describe in
1. 1 answer
2. asked by Catherine
3. 5,899 views
You are given 9 to 1 odds against tossing three heads with three coins, meaning you win $9 if you succeed and you lose $1 if you
1. 2 answers
2. asked by Chris
3. 5,794 views
What mass of liquid water a t room temperature (25°C) can be raised to its boiling point with the addition of 40.0 kJ of
1. 4 answers
2. asked by Anonymous
3. 5,649 views
Three quarters are tossed and a tail appears on at least one of them. What is the probability that at least one head appears?
1. 3 answers
2. asked by Sam
3. 5,612 views
calculate the number of oxygen needed to oxidize 12.5grams of glucose (C6H12O6) into carbon dioxide and water. (Combustion
1. 1 answer
2. asked by Opo
3. 5,132 views
you draw two cards from a standard deck of 52 cards, but before you draw the second card, you put the first one back and
1. 2 answers
2. asked by destiny
3. 4,813 views
For how many two-digit prime numbers is the sum of its digits 8?
1. 7 answers
2. asked by Jack
3. 3,468 views
At the equator, the earth’s field is essentially horizontal; near the north pole, it is nearly vertical. In between, the angle
1. 3 answers
2. asked by Tom
3. 3,027 views
In a solar water heater, energy from the Sun is gathered by water that circulates through tubes in a rooftop collector. The
1. 1 answer
2. asked by monique
3. 2,812 views
At 298K,2PCl3(g)+O2(g)---> 2POCl3(l) Delta H= -620.2kJ for the reaction and the standard molar entropies are ,PCl3(g)=
1. 2 answers
2. asked by PM221
3. 2,655 views
The reform reaction between steam and gaseous methane () produces "synthesis gas," a mixture of carbon monoxide gas and
1. 2 answers
2. asked by BlahxD
3. 2,548 views
What amount must be paid to settle an invoice of $1200 dated Nov.28 , terms 3/10, n/30 if the invoice is paid on Dec. 3? I got
1. 1 answer
2. asked by ann
3. 2,424 views
A heavy conductor (mass m, length `, resistance R) is suspended by two springs each with spring constant k, and connected to a
1. 2 answers
2. asked by cr
3. 2,349 views
100 ml of 0.02 M acetic acid (pKa= 4.76) is titrated with 0.02 N KOH. After addingsome base to the acid solution, the observed
1. 1 answer
2. asked by kavin
3. 2,277 views
Billiard ball A of mass mA=0.400kg moving with speed vA=1.80m/s strikes ball B, initially at rest of mass mB=0.500kg. As a
1. 1 answer
2. asked by shahzi
3. 2,077 views
Determine the pH of 263 ml of solution which has [NH 4I] = 0.300 M. Kb = 1.74 × 10-5 for NH3(aq)
1. 1 answer
2. asked by Cait
3. 2,053 views
How much heat is emitted when 4.55 of water condenses at 25 ? The heat of vaporization of water at 25 is 44.0 .
1. 1 answer
2. asked by Tany
3. 1,778 views
1. Traci purchases a car for $16,000. If its depreciates by 12% per year, what will be the car's value in 5 years?2. The
1. 2 answers
2. asked by Bianna
3. 1,673 views
calculate the number of oxygen needed to oxidize 12.5grams of glucose (C6H12O6) into carbon dioxide and water. (Combustion
1. 1 answer
2. asked by Opo
3. 1,640 views
2C2H6 +7O2 --> 4CO2 + 6H2OIf 6 moles of O2 are used in the following reaction, how many grams of CO2 will be produced?
1. 1 answer
2. asked by Barbara
3. 1,578 views
Jennifer has a 60-month fixed installment loan, with a monthly payment of $223.04. The amount she borrowed was $11,000. Instead
1. 0 answers
2. asked by Hira
3. 1,430 views
Which of the following observations of children is the most objective?A. Chris took a toy truck from Alex. Alex cried, became
1. 1 answer
2. asked by brandy
3. 1,365 views
You observe someone pulling a block of mass 48 kg across a low-friction surface. While they pull a distance of 3.0 m in the
1. 1 answer
2. asked by Amelie
3. 1,344 views
If the true population standard deviation was known to be 3.0, then approximately what minimum sample size would you need in a
1. 0 answers
2. asked by Marissa
3. 1,282 views
I set this problem up as 500-2X=3,400Marys monthly salary is $500 less than twice her daughter's salary. Together they earn
1. 1 answer
2. asked by Caroline
3. 1,275 views
Select the letter of the best correction for the run-on below.Perhaps Eric first saw Greenland in midsummer when it was really
1. 7 answers
2. asked by anthony
3. 1,236 views
An electrochemical cell that uses the reactionTi^3+ + 2Cr^2+ -> Ti^1+ + 2Cr^3+ Has a standard cell potential of E¢ªcell =
1. 0 answers
2. asked by Anna
3. 1,230 views
I don't know how to begin this one-helpJanie bought 2 pairs of identical jeans at a sale.she paid regular price for the 1st pair
1. 1 answer
2. asked by Caroline
3. 1,225 views
PLEASE NOTE: Titration requires several steps in order to obtain exact results. The procedures described in this lab assume that
1. 1 answer
2. asked by Zach
3. 1,225 views
margie pagano is buying a car. her june payment monthly interest at 13.2% was $208. what was margie principal balance at the
1. 0 answers
2. asked by elijah
3. 1,194 views
A researcher is testing a null hypothesis that states: H: ì = 50. A sample of 25 scores is selected and the mean is M =
1. 1 answer
2. asked by kesha
3. 1,185 views
I was wondering if someone could help me find information on the short story "Died and Gone to Vegas" by Tim Gautreaux. I read
1. 8 answers
2. asked by Hannah
3. 1,183 views
How do you balance the equation NH3 + CuO > Cu + H2O + N2
1. 2 answers
2. asked by Trish
3. 1,164 views
i am Prepare a report on what information i found that could impact your future career and how will you use this information?
1. 6 answers
2. asked by Denese
3. 1,151 views
Find the rms speed of H2O molecules in atmospheric water vapor at a temperature of 13.2° C.
1. 0 answers
2. asked by ECU
3. 1,149 views
The value given below is discrete. use the continuity correction and describe the region of the normal distribution that
1. 0 answers
2. asked by Bella
3. 1,129 views
Determine whether each statement is always, sometimes, or never true.Two cones are similar. A pyramid is similar to a square.
1. 1 answer
2. asked by Need Help
3. 1,124 views
. Given the following stocks 4M NaCl, 3M NaOH, 5M HCl(a) Prepare 200ml of a solution containing 0.5M NaCl and 0.1M (b) Prepare
1. 2 answers
2. asked by tom
3. 1,117 views
A) As a wind instrument warms up, the resonant frequencies of the instrument tend to slightly decrease.B) If the air in a
1. 2 answers
2. asked by J
3. 1,113 views
A proton is moving in a circular orbit of radius 11.8 cm in a uniform magnetic field of magnitude 0.232 T directed perpendicular
1. 2 answers
2. asked by cr
3. 1,111 views
Estimate the aqueous solubility, in milligrams per liter, of AgBr(s) at 160degrees celsius.
1. 1 answer
2. asked by 9037
3. 1,097 views
A gallon of paint costs $20 and covers 465 square feet. Three coats of paint are recommended for even coverage. The room to be
1. 1 answer
2. asked by Need Help
3. 1,077 views
The function H described by H(x)= 2.75x+71.48 can be used to predict the height in centemeters, of a woman whose humerus(the
1. 1 answer
2. asked by deb
3. 1,073 views
An electron is accelerated by a 6.4 kV potential difference. The charge on an electron is 1.60218 × 10^−19 C and its mass is
1. 3 answers
2. asked by cr
3. 1,059 views
Compare the Freedom Charter with the United States Constitution. What rights and guarantees does the Charter call for that are
1. 1 answer
2. asked by michael
3. 1,051 views
Which of the fllowing is CORRECT?A. She sings bad. B. He runs a well race. C. They won with a lucky shot. D. all of the above
1. 2 answers
2. asked by robin
3. 1,039 views
is this equation is a linear equation [x + 2y -3z / e^2 + In(2) =0.]true or false
1. 1 answer
2. asked by Fakaapo. Suetusi
3. 1,028 views
Mary, who is sixteen years old, is four times as old as her brother. How old will Mary be when she is twice as old as her
1. 1 answer
2. asked by mm
3. 1,017 views
Benzene (C6H6) is an organic compound that boils at 80.1°C. If 100.0 grams of liquid benzene at 18.5°C is given 16.88 kJ of
1. 0 answers
2. asked by Laura
3. 1,008 views
A child in a boat throws a 5.40 kg package out horizontally with a speed of 10.0 m/s, Fig. 7-31. Calculate the velocity of the
1. 0 answers
2. asked by Brittney
3. 1,005 views
Diego pulls a 4.5 kg sled across level snow with a force, F, of 200 N on a rope that is 35.0° above the horizontal, as shown in
1. 2 answers
2. asked by Lisa
3. 998 views
A driver measures her "cold" tire gauge pressure to be 1.95 105 Pa. The measurement is made before driving, when the tires are
1. 0 answers
2. asked by ECU
3. 995 views
A 30 kg. balloon is filled with 100 m to the third power of helium. how much force is needed to hold it down?
1. 2 answers
2. asked by DMITRIC
3. 988 views
Six-, seven-, and eight-year-oldsA. do a great deal of tattling and boasting. B. make lasting friendships. C. are seldom
1. 5 answers
2. asked by brandy
3. 980 views
Oxides of nitrogen are produced in high-temperature combustion processes. The essential reaction is:N2(g)+O2(g)--->2NO(g) At
1. 0 answers
2. asked by Krutika
3. 973 views
One of the most important factors in a caregiver's ability to provide quality care isA. good business sense. B. patience. C.
1. 1 answer
2. asked by brandy
3. 969 views
What mass (in grams) of steam at 100°C must be mixed with 341 g of ice at its melting point, in a thermally insulated
1. 1 answer
2. asked by tim
3. 956 views
Observational records that contain significant detailed information are usually in what form?A. Checklist B. Narrative C.
1. 2 answers
2. asked by brandy
3. 914 views
Name two other factors besides latitude that influence japans climate?and what major ocean currents affect japan
1. 4 answers
2. asked by Erika
3. 903 views
Consider the parameterization of the unit circle given by x=cos(4t^2−t), y=sin(4t^2−t) for t in (−InF, INF). Describe in
1. 0 answers
2. asked by Catherine
3. 899 views
A particle moves with its position given by x=cos(2t) and y=sin(t), where positions are given in feet from the origin and time t
1. 1 answer
2. asked by Catherine
3. 890 views
Determine the pH of 263 ml of solution which has [NH 4I] = 0.300 M. Kb = 1.74 × 10-5 for NH3(aq)
1. 2 answers
2. asked by Cait
3. 877 views
. List one external factor that you feel has a powerful influence on your company's HRM function and explain why.
1. 0 answers
2. asked by Anonymous
3. 874 views
How do u say hello in German and Italian?????????????????????????????????????????????????????
1. 7 answers
2. asked by Lilllly
3. 869 views
Consider the parameterization of the unit circle given by x=cos(4t^2−t), y=sin(4t^2−t) for t in (−InF, INF). Describe in
1. 1 answer
2. asked by Catherine
3. 868 views
In how many ways can a committee of five people be selected from seven women and nine men if at least one woman must be in the
1. 2 answers
2. asked by Fakaapo. Suetusi
3. 867 views
My teacher gave us a sonnet and he said that we have to do an oral presentation that faithfully interprets the meaning of the
1. 5 answers
2. asked by Allison
3. 859 views
You observe someone pulling a block of mass 48 kg across a low-friction surface. While they pull a distance of 3.0 m in the
1. 0 answers
2. asked by Amelie
3. 853 views
How to simplifythe square root of 45 plus 4 square root 5
1. 1 answer
2. asked by Suzanne
3. 851 views
Triangle ABC has vertices A(-3,2) B(4.5) AND C(4,-1) Fin out wether the triangle is isosceles?
1. 2 answers
2. asked by Teresa
3. 851 views
NO2(g) → 1⁄2N2(g) + O2(g) ΔH1 = -33.9 kJNO2(g) → NO(g) + 1⁄2O2(g) ΔH2 = 56.5 kJ What is ΔH for the reaction
1. 0 answers
2. asked by Monty
3. 849 views
2. Rachel's parents enrolled her in your after-school program in September. In October, Rachel and another girl named Callye
1. 1 answer
2. asked by brandy
3. 848 views
related rates: the base of a pyramid-shaped tank is a square with sides of length 12 meters, and the vertex pyramid is 13 meters
1. 1 answer
2. asked by Raven
3. 847 views
what element does ammonia replenish in the soil?
1. 2 answers
2. asked by rukhsar
3. 845 views
a concrete area measures 20ft on each side. the concrete slab will be 8 inches deep. how many cubic feet of concrete will be
1. 2 answers
2. asked by Caroline
3. 829 views
A Science instrutor assigns his student one second of home work..the first week of school,two seconds. the second week four
1. 3 answers
2. asked by MIKE
3. 825 views
While watching ocean waves at the dock of the bay, Otis notices that 13 waves pass beneath him in 32 seconds. He also notices
1. 0 answers
2. asked by anna
3. 809 views
Fill in the blanks:For all sets A and B, if A is in the set of B, then A union B in in the set of B. Proof: Suppose A and B are
1. 1 answer
2. asked by heidi
3. 806 views
Explain how The Federalist Papers would have been more or less successful if newspapers had been printed monthly (rather than
1. 3 answers
2. asked by cw
3. 801 views
The average rate at which energy is conducted outward through the ground surface in a certain region is 51.6 mW/m2, and the
1. 2 answers
2. asked by tim
3. 798 views
Children develop to their potential when caregivers haveA. realistic expectations. B. strong values. C. a philosophy. D.
1. 1 answer
2. asked by brandy
3. 792 views
a DC-10 aircraft is flying at an altitude where the atmospheric pressure is 40% of sea level pressure. if the aircraft interior
1. 3 answers
2. asked by IVLIVS
3. 789 views
An air compressor is a device that pumps air particles into a tank. A particular air compressor adds air particles to its tank
1. 1 answer
2. asked by ann
3. 784 views
A heavy conductor (mass m, length `, resistance R) is suspended by two springs each with spring constant k, and connected to a
1. 1 answer
2. asked by cr
3. 778 views
related rates: the base of a pyramid-shaped tank is a square with sides of length 12 meters, and the vertex pyramid is 13 meters
1. 0 answers
2. asked by Raven
3. 778 views
Hey All, Please rate my GMAT essay out of 6.The topic is “Of all the manifestations of power, restraint in the use of that
1. 3 answers
2. asked by Steven
3. 775 views
Jack London's Law of LifeWhat is the "law of life"? How does it relates to naturalism?
1. 1 answer
2. asked by Misty
3. 775 views
hey sorry i can't find the question iu poseted earlier so i'm going to ask again....it's about macbeth act3.... how did the
1. 3 answers
2. asked by Mark J.
3. 770 views
While working at The Nut House you are asked to make a mixture of raisins and nuts worth $2.75/lb. You have 12 pounds of raisins
1. 2 answers
2. asked by Loretta
3. 766 views
How do you find the base and height of the parallelogram if the area is 180 square units?
1. 2 answers
2. asked by Need Help
3. 763 views
jerry is 6 more than 3 times as old as his son.together they are 46 yrs old. how old is jerry. ans -36I set up problem 6+3x=46
1. 7 answers
2. asked by Caroline
3. 752 views
When preparing an environment for school-aged children, the caregiver should ensure that theA. environment resembles their
1. 4 answers
2. asked by ann
3. 748 views
Ok, I figured this out (I think) but can you please check?Don't worry. I can carry the tent all by myself because it is so
1. 3 answers
2. asked by Catherine
3. 736 views
1- A SQL statement is needed to create a stored procedure that has one input parameter of data type int. The stored proc selects
1. 4 answers
2. asked by Robert
3. 727 views
The Crab pulsar (m=2.00x10^30 kg) is a neutron star located in the Crab Nebula. The rotation rate of the Crab pulsar is
1. 1 answer
2. asked by Abigail
3. 724 views
some study guide questions i am stumped on1 uncertainty about the future is likely to a increase current spending b either
1. 0 answers
2. asked by samuel
3. 722 views
An electron is accelerated by a 6.4 kV potential difference. The charge on an electron is 1.60218 × 10^−19 C and its mass is
1. 2 answers
2. asked by cr
3. 721 views
A proton is moving in a circular orbit of radius 11.8 cm in a uniform magnetic field of magnitude 0.232 T directed perpendicular
1. 1 answer
2. asked by cr
3. 719 views
1. Find the are between the curves y=e^x and y=4-x^2 graphically.a.) set up the integral b.) include bounds rounded to three
1. 1 answer
2. asked by Amy
3. 713 views

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