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2011
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Questions Asked on May 3, 2011

Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 402 N and F2 = 364 N.
1. 7 answers
2. asked by Dani
3. 24,832 views
The function f is continuous on the closed interval [0,6] and has values that are given in the table below.x |0|2|4|6
1. 1 answer
2. asked by Kristin
3. 7,000 views
An electric motor rotating a workshop grinding wheel at a rate of 95 rev/min is switched off. Assume the wheel has a constant
1. 3 answers
2. asked by Dani
3. 6,890 views
a wave has a frequency of 2 Hz. find its period ?please show work.....
1. 4 answers
2. asked by HIMAR
3. 4,207 views
Which term describes an organism's ability to maintain a stable internal environment?(1) reproduction (2) extinction (3)
1. 9 answers
2. asked by Keira
3. 4,127 views
An outfielder throws a 0.150 kg baseball at a speed of 26.0 m/s and an initial angle of 30.0°. What is the kinetic energy of
1. 1 answer
2. asked by Dani
3. 3,472 views
how to write 2nd may 2011 in 5 letters without using numbers
1. 22 answers
2. asked by Anonymous
3. 3,113 views
a fire fighter's 36 foot ladder leans against a building. the top of the ladder touches the buliding 28 ft above the ground.
1. 2 answers
2. asked by Alberto
3. 3,003 views
a bag contains 4 red chips, 2 blue chips and 5 green chips. A chip is randomly removed from the bag, and then without replacing
1. 2 answers
2. asked by veronica
3. 2,331 views
Evaluate with the help of Logarithms 1) 2391/3072 2.38*3.901/4.83
1. 1 answer
2. asked by sam
3. 2,312 views
A 7.80-g bullet moving at 530 m/s penetrates a tree trunk to a depth of 6.2 cm.(a) Use work and energy considerations to find
1. 2 answers
2. asked by Dani
3. 2,246 views
a 20-ounce bag of popcorn costs $2.80. if the unit price stays the same, how much does a 35-ounce bag of popcorn cost?
1. 6 answers
2. asked by natalie
3. 2,182 views
An aqueous KNO3 solution is made using 82.7 grams of KNO3, diluted to a total solution volume of 1.50 L. The density of this
1. 3 answers
2. asked by Ryan
3. 2,004 views
Rank these gases in order of increasing standard molar entropy:Column preview Smallest S Br2(g) Second smallest S F2(g) Second
1. 1 answer
2. asked by Ryan
3. 1,887 views
A dioxin-contaminated water source contains 0.052% dioxin by mass. How much dioxin (in g) is present in 4.2 liters of this
1. 1 answer
2. asked by Ryan
3. 1,849 views
I have to write 1234.567 in English word form. How do I write this number?
1. 5 answers
2. asked by Daniel
3. 1,790 views
please please please help me balance these two equations...1. K2Cr2O7+H2C2O4.2H2O--> K[Cr(H20)2(C2O4)2].2H2O+CO2 2.
1. 2 answers
2. asked by anonymous
3. 1,761 views
Calculate the force, required of the "deltoid" muscle to hold up the outstretched arm shown in the figure . The total mass of
1. 1 answer
2. asked by Cara
3. 1,688 views
2Al+3H2SO4--> Al2(SO4)3+3H2a.)determine the oxidation number of each element in both the reaction and products of this
1. 1 answer
2. asked by michael
3. 1,683 views
1. Which of the following ordered pairs is a solution of 5x + 2y = -3?a. (2,-4) b. (-4,2) c. (1,-4) d. (-4,1) is the answer: C?
1. 2 answers
2. asked by Cheryl
3. 1,646 views
The graph of f'(x) is shown for 0=< x =<10. The areas of the regions between the graph of f' and the x-axis are 20, 6, and 4,
1. 1 answer
2. asked by Mike
3. 1,616 views
The reaction SO2Cl2(g)--> SO2(g) + Cl2(g) has Kc = 2.99 x 10-7 at 227 degrees C. If a reaction mixture initially contains 0.166
1. 1 answer
2. asked by Ryan
3. 1,593 views
An airplane is flying with an airspeed of 660 Kilometers per hour. The wind is blowing from 345 degrees at 35 km/h. What
1. 2 answers
2. asked by Joe
3. 1,530 views
A sample of 12 measurements has a mean of 34 and a standard deviation of 4.5. Suppose that the sample is enlarged to 14
1. 3 answers
2. asked by Anonymous
3. 1,504 views
You brought home 1/2 of a can of paint. You then used 2/3 of the paint to cover a table top. What fraction of a full can of
1. 2 answers
2. asked by Scott
3. 1,479 views
Calculate the magnitudes of the gravitational forces exerted on the Moon by the Sun and by the Earth when the two forces are in
1. 1 answer
2. asked by Amy
3. 1,430 views
On a sunny day an office building casts a shadow that is 80 feet long. At the same time, a 5 foot person casts a 6 foot shadow.
1. 2 answers
2. asked by gjhjhvvjh
3. 1,363 views
For the cellFe(s)©¦Fe2+(aq)¨UO2(g)©¦H+(aq), H2O(l)©¦Pt(s) Indicate a) standard cell potential; b) overall cell reaction
1. 2 answers
2. asked by Rebecca
3. 1,351 views
okayy sooo this matching thing is wierd.. i don't understand it..Zeroth First Second -Heat can change energy from one form to
1. 4 answers
2. asked by Please help!!
3. 1,346 views
A cyclist applies a force of 250 N to the pedals of a bicycle. If the rear wheel applies a force of 200 N to the road surface.
1. 1 answer
2. asked by Rodolfo Brown
3. 1,319 views
Habitat limits result in a populationsA)salinity B) temperature C) physical obstacles D) biogeographic range
1. 1 answer
2. asked by help
3. 1,295 views
A rifle with a weight of 30 N fires a 3.0 g bullet with a speed of 250 m/s.(a) Find the recoil speed of the rifle. (b) If a 675
1. 0 answers
2. asked by Dani
3. 1,289 views
The covalent compounds ethyl alcohol and dimethyl ether have the formula C2H6O. However, the alcohol melts at -117.3 degrees C
1. 1 answer
2. asked by Agustin
3. 1,283 views
o Name three selection tools that you would consider using to hire a police officer.o Choose what you think is the best
1. 5 answers
2. asked by Lacy
3. 1,264 views
This is the first question..... For a population that has a standard deviation of 10, figure the standard deviation of the
1. 0 answers
2. asked by Heather
3. 1,263 views
The temperature difference in and outside an electric oven is 150oC glass fitted on the door has thickness and area of 0.2cm and
1. 2 answers
2. asked by sam
3. 1,262 views
A reaction in which A, B, and C react to form products is zero order in A, one-half order in B, and second order in C. If the
1. 1 answer
2. asked by Ryan
3. 1,233 views
*Des vacances speciales*Pensez à des vacances spéciales (ou imaginaires) avec votre famille ou vos amis. Faites une série de
1. 2 answers
2. asked by Sydney
3. 1,221 views
The reaction 2 H2S(g)--> 2 H2(g) + S2(g) has Kp = 2.4 x 10-4 at 1073 K. A reaction mixture contains 0.146 atm of H2, 0.041 atm
1. 0 answers
2. asked by Ryan
3. 1,216 views
A flagpole casts a shadow 10 ft long. If a man 6 ft tall casts a shadow 4 ft long at the sme time of day, how tall is the
1. 2 answers
2. asked by Edwqard
3. 1,204 views
A ski jumper starts from rest 51.0 m above the ground on a frictionless track and flies off the track at an angle of 45.0°
1. 1 answer
2. asked by Dani
3. 1,198 views
How much would you repay the bank if you borrowed $7,900 at 4.3% annual interest for 6 years?
1. 2 answers
2. asked by Anonymous
3. 1,198 views
What mass of NaCl can be dissolved in 7.50 X 10 (to the 2nd)grams of water at 25 degrees C?
1. 1 answer
2. asked by Nick
3. 1,195 views
if a person weighs 120kg on earth, how much would they weigh in space
1. 1 answer
2. asked by JM
3. 1,189 views
A car tire rotates with an average angular speed of 29rad/s.In what time interval will the tire rotate 3.5 times? Answer in
1. 4 answers
2. asked by fg
3. 1,187 views
Calculate the osmotic pressure (in torr) of a solution containing 17.15 mg of hemoglobin (molar mass 6.5 x 104 g/mol) in 12.8 mL
1. 2 answers
2. asked by Ryan
3. 1,179 views
Jane lives in Middleton, where the tax rate is 2.9%. Her property is assessed at $189,000. What is her tax?
1. 1 answer
2. asked by Anonymous
3. 1,163 views
Which of the following criteria indicate that a reaction is SPONTANEOUS? Check all that apply.a) The change in free energy is
1. 2 answers
2. asked by Pam
3. 1,161 views
Consider the following reaction at equilibrium:C(s) + H2O(g) CO(g) + H2(g) Predict which of these stresses which cause the
1. 0 answers
2. asked by Ryan
3. 1,159 views
Find f(x) if f(1) = −1 and the tangent line at (x, f(x)) has slope7ex + 6.F(x)=
1. 1 answer
2. asked by Rachel
3. 1,128 views
How many grams of sodium azide are required to produce 31 grams of nitrogen
1. 1 answer
2. asked by Nikki
3. 1,115 views
true or false??a)If there are no changes in the oxidation state of the reactants or products of a particular reaction, that
1. 1 answer
2. asked by Rebekah
3. 1,112 views
What is being oxidized in each of the following reactions?(a) Sr(s) + F2(g) SrF2(s) F2 SrF2 Sr .(b) H2(g) + I2(g) 2 HI(g) H2 HI
1. 0 answers
2. asked by Lilly
3. 1,081 views
I need help understanding how to do these problems. Thanks!1) Find the value(s) that would be left out of the range of f. If
1. 0 answers
2. asked by alyssa
3. 1,075 views
Defend why you consider these to be modern styles.
1. 2 answers
2. asked by Anonymous
3. 1,053 views
I invested $45,6000 at 18% to be compounded semi-annually. What will be the value of my investment in four years?
1. 1 answer
2. asked by Galaxy
3. 1,052 views
The terms Hispanic and Latino are umbrella terms for people from many different Spanish-speaking cultures in the Western
1. 1 answer
2. asked by Sade C
3. 1,032 views
no idea what to do here. was in hospital and missed class for a while.any help is very welcome and apprecited.A couple finances
1. 1 answer
2. asked by james
3. 1,018 views
A survey of drivers in the United States found that 15% never use a cell phone while driving. Suppose that drivers arrive at
1. 0 answers
2. asked by level crawford
3. 1,003 views
I've deleted both of your posts asking for answers to Spanish tests.Jiskha tutors do not supply answers. Period. If you'd like
1. 4 answers
2. asked by Ms. Sue
3. 1,001 views
The reaction N2O5 --> NO3 + NO2 is first-order in N2O5 and has a rate constant of 0.058/s. Calculate the rate of reaction when
1. 2 answers
2. asked by Ryan
3. 996 views
A ball is thrown directly upward from ground level with an initial velocity v(0) = 96 ft=s.Assuming that the ball’s only
1. 1 answer
2. asked by fcv
3. 976 views
A solution contains naphthalene dissolved in hexane at a concentration of 10.40% naphthalene by mass. Calculate the vapor
1. 2 answers
2. asked by Ryan
3. 955 views
A 55.0 kg ice skater is moving at 4.04 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole.
1. 0 answers
2. asked by Dani
3. 944 views
find the point on the parabola (y=x^2) that is closest to the point (0.75,0)
1. 0 answers
2. asked by divesh
3. 912 views
y=the negative square root of 2x
1. 1 answer
2. asked by Cambria
3. 909 views
Does the world have enough resources 8 or 10 billion people to live decent, secure, happy, fulfilling lives? What do those terms
1. 1 answer
2. asked by Anonymous
3. 908 views
An aqueous solution containing 35.1 grams of an unknown molecular (noneolectrolyte) compound in 152.5 grams of water was found
1. 1 answer
2. asked by Ryan
3. 903 views
Another professional mandate to work with families is offered inA) most colleges of education B) the Code of Ethics C) the
1. 4 answers
2. asked by finial help
3. 891 views
True or FalseIt is inevitable that parents and teachers will be in conflict.
1. 2 answers
2. asked by finial help
3. 890 views
The average velocity of molecules of nitrogen gas (N2) at room temperature is around 500 m/s. If you were to raise the
1. 1 answer
2. asked by aaronia
3. 887 views
What is the time and day at a certain place X (Lat 25 deg N,Long 33 deg W) when at is 2.30 AM on Thurs Day at a place Y (Lat 25
1. 1 answer
2. asked by Sumit Guha
3. 878 views
The problem describes a debt to be amortized.A man buys a house for $350,000. He makes a $150,000 down payment and amortizes the
1. 0 answers
2. asked by susie
3. 878 views
Two objects with masses of 1.00 kg and 7.00 kg are connected by a light string that passes over a frictionless pulley as in the
1. 0 answers
2. asked by Dani
3. 876 views
Hello. Please help me with a few lexical questions.1)Is it possible to use "spot" in the following context: "the scandal spotted
1. 1 answer
2. asked by Ilma
3. 874 views
What was Dillon's fundamental problem in the move ''School Ties''
1. 0 answers
2. asked by ted
3. 864 views
i have no idea how to do this at all please explain...The specific heat capacity of copper is 0.09 cal/g°C. How much energy is
1. 2 answers
2. asked by Please help!!
3. 860 views
would you please check these for me thank you.+6+-5--4= 5 also Sara only has dimes and nichels in her coin jar,they are ina
1. 1 answer
2. asked by heather
3. 856 views
Can someone guide me with this question?Four teachers and five students have volunteered to serve on the school's fundraising
1. 3 answers
2. asked by Jay
3. 847 views
Please help...Staying fit requires all of the following EXCEPT _______. A-a rigid fitness plan B-physical activity C-healthy
1. 5 answers
2. asked by mo
3. 845 views
If segment AB is a diameter, AB =10, and measure angle ABC =45, how far is segment BC from the center of circle O?
1. 2 answers
2. asked by Alexandria
3. 831 views
A 7 x 10^-3kg bullet is fired into a 2kg wooden block initially at rest on a level surface. The bullet passes through the block
1. 2 answers
2. asked by Anonymous
3. 820 views
CompanyE December 31, 2010 Assets $42,000 $32,760 $26,880 $74,760 $114,660 Liabilities 34,440 22,932 14,515 51,584 ? December
1. 0 answers
2. asked by kelly
3. 808 views
A survey of Chaicago sports fans asked them 3 questions about which they prefer. Each fan must give exactly 1 answer to each
1. 0 answers
2. asked by kavi
3. 805 views
Figure ABCD is a square. Side AB measures 10x – 7. Side BC measures 2x + 52. Find the value of x.
1. 1 answer
2. asked by Anonymous
3. 804 views
Coal can be used to generate hydrogen gas by this endothermic reaction:C(s) + H2O(g) CO(g) + H2(g) If this reaction is at
1. 0 answers
2. asked by Ryan
3. 803 views
Find the ratio of the gravitational force on the Moon due to the Earth to the gravitational force on the Moon due to the Sun.
1. 1 answer
2. asked by HELP!!!!
3. 796 views
Given the quadratic function f(x) = x2 – 18x + 81, find a value of x such that f(x) = 16.
1. 2 answers
2. asked by carol
3. 794 views
Find the product.(5a+2)³
1. 1 answer
2. asked by Mimi
3. 793 views
peter bought a computer that cost 1,500. The computer is on sale for 15% off. Peter paid 7% sales tax on the sale price of the
1. 1 answer
2. asked by chris
3. 779 views
Given an angle pheta in standard position, if P(�ã3/2, -1/2) lies on the terminal side and on the unit circle, find sin pheta
1. 1 answer
2. asked by lindsey
3. 778 views
A student flings a 2.3g ball of putty at a 225g cart sitting on a slanted air track that is 1.5m long. The track is slanted at
1. 0 answers
2. asked by Syed
3. 773 views
*Des vacances speciales*Pensez à des vacances spéciales (ou imaginaires) avec votre famille ou vos amis. Faites une série de
1. 1 answer
2. asked by Sydney
3. 772 views
A solid, horizontal cylinder of mass 8.0 kg and radius 1.30 m rotates with an angular speed of 5.50 rad/s about a fixed vertical
1. 0 answers
2. asked by Dani
3. 772 views
Perform the following multiplication. Be sure answers are reduced to lowest terms. (Enter as an improper fraction.)2 1/2 x 1 3/8
1. 1 answer
2. asked by Abby
3. 765 views
How do you know what shape the graph in the xy-plane represented by x=3sin(t) and y=2cos(t) is?
1. 3 answers
2. asked by Erica
3. 761 views
Treating air as an ideal gas of diatomic molecules, calculate how much heat is required to raise the temperature of the air in
1. 2 answers
2. asked by please help me
3. 757 views
If a quantity of gas in a piston cylinder has a volume of 0.9 m3 and is initially at room temperature (30°C) and is heated in
1. 1 answer
2. asked by Eric
3. 756 views
Determine whether x+6 is a factor of x^3+4x^2-27x-90
1. 1 answer
2. asked by Brittney
3. 752 views
Four balls are dropped from a platform, 20 meters high. One ball is 5k, the other is 10kg, then 20kg, and 40kg. Which ball will
1. 1 answer
2. asked by MadiShiley
3. 749 views

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