Ask a New Question
Search
Archives
2011
May
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.
7 answers
asked by
Dani
24,837 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 answer
asked by
Kristin
7,007 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
3 answers
asked by
Dani
6,896 views
a wave has a frequency of 2 Hz. find its period ?
please show work.....
4 answers
asked by
HIMAR
4,216 views
Which term describes an organism's ability to maintain a stable internal environment?
(1) reproduction (2) extinction (3)
9 answers
asked by
Keira
4,133 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 answer
asked by
Dani
3,474 views
how to write 2nd may 2011 in 5 letters without using numbers
22 answers
asked by
Anonymous
3,125 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.
2 answers
asked by
Alberto
3,010 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
2 answers
asked by
veronica
2,335 views
Evaluate with the help of Logarithms 1) 2391/3072 2.38*3.901/4.83
1 answer
asked by
sam
2,320 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
2 answers
asked by
Dani
2,254 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?
6 answers
asked by
natalie
2,185 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
3 answers
asked by
Ryan
2,009 views
Rank these gases in order of increasing standard molar entropy:
Column preview Smallest S Br2(g) Second smallest S F2(g) Second
1 answer
asked by
Ryan
1,897 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 answer
asked by
Ryan
1,853 views
I have to write 1234.567 in English word form. How do I write this number?
5 answers
asked by
Daniel
1,798 views
please please please help me balance these two equations...
1. K2Cr2O7+H2C2O4.2H2O--> K[Cr(H20)2(C2O4)2].2H2O+CO2 2.
2 answers
asked by
anonymous
1,769 views
Calculate the force, required of the "deltoid" muscle to hold up the outstretched arm shown in the figure . The total mass of
1 answer
asked by
Cara
1,694 views
2Al+3H2SO4--> Al2(SO4)3+3H2
a.)determine the oxidation number of each element in both the reaction and products of this
1 answer
asked by
michael
1,691 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?
2 answers
asked by
Cheryl
1,652 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 answer
asked by
Mike
1,619 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 answer
asked by
Ryan
1,601 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
2 answers
asked by
Joe
1,538 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
3 answers
asked by
Anonymous
1,511 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
2 answers
asked by
Scott
1,484 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 answer
asked by
Amy
1,441 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.
2 answers
asked by
gjhjhvvjh
1,369 views
For the cell
Fe(s)©¦Fe2+(aq)¨UO2(g)©¦H+(aq), H2O(l)©¦Pt(s) Indicate a) standard cell potential; b) overall cell reaction
2 answers
asked by
Rebecca
1,357 views
okayy sooo this matching thing is wierd.. i don't understand it..
Zeroth First Second -Heat can change energy from one form to
4 answers
asked by
Please help!!
1,350 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 answer
asked by
Rodolfo Brown
1,325 views
Habitat limits result in a populations
A)salinity B) temperature C) physical obstacles D) biogeographic range
1 answer
asked by
help
1,301 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
0 answers
asked by
Dani
1,299 views
The covalent compounds ethyl alcohol and dimethyl ether have the formula C2H6O. However, the alcohol melts at -117.3 degrees C
1 answer
asked by
Agustin
1,292 views
o Name three selection tools that you would consider using to hire a police officer.
o Choose what you think is the best
5 answers
asked by
Lacy
1,273 views
This is the first question..... For a population that has a standard deviation of 10, figure the standard deviation of the
0 answers
asked by
Heather
1,271 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
2 answers
asked by
sam
1,269 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 answer
asked by
Ryan
1,239 views
*Des vacances speciales*
Pensez à des vacances spéciales (ou imaginaires) avec votre famille ou vos amis. Faites une série de
2 answers
asked by
Sydney
1,227 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
0 answers
asked by
Ryan
1,220 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
2 answers
asked by
Edwqard
1,211 views
How much would you repay the bank if you borrowed $7,900 at 4.3% annual interest for 6 years?
2 answers
asked by
Anonymous
1,208 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 answer
asked by
Dani
1,202 views
What mass of NaCl can be dissolved in 7.50 X 10 (to the 2nd)grams of water at 25 degrees C?
1 answer
asked by
Nick
1,199 views
if a person weighs 120kg on earth, how much would they weigh in space
1 answer
asked by
JM
1,198 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
4 answers
asked by
fg
1,196 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
2 answers
asked by
Ryan
1,185 views
Jane lives in Middleton, where the tax rate is 2.9%. Her property is assessed at $189,000. What is her tax?
1 answer
asked by
Anonymous
1,171 views
Which of the following criteria indicate that a reaction is SPONTANEOUS? Check all that apply.
a) The change in free energy is
2 answers
asked by
Pam
1,170 views
Consider the following reaction at equilibrium:
C(s) + H2O(g) CO(g) + H2(g) Predict which of these stresses which cause the
0 answers
asked by
Ryan
1,163 views
Find f(x) if f(1) = −1 and the tangent line at (x, f(x)) has slope7ex + 6.
F(x)=
1 answer
asked by
Rachel
1,135 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 answer
asked by
Rebekah
1,120 views
How many grams of sodium azide are required to produce 31 grams of nitrogen
1 answer
asked by
Nikki
1,120 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
0 answers
asked by
Lilly
1,090 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
0 answers
asked by
alyssa
1,079 views
Defend why you consider these to be modern styles.
2 answers
asked by
Anonymous
1,062 views
I invested $45,6000 at 18% to be compounded semi-annually. What will be the value of my investment in four years?
1 answer
asked by
Galaxy
1,058 views
The terms Hispanic and Latino are umbrella terms for people from many different Spanish-speaking cultures in the Western
1 answer
asked by
Sade C
1,038 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 answer
asked by
james
1,025 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
4 answers
asked by
Ms. Sue
1,011 views
A survey of drivers in the United States found that 15% never use a cell phone while driving. Suppose that drivers arrive at
0 answers
asked by
level crawford
1,009 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
2 answers
asked by
Ryan
1,001 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 answer
asked by
fcv
983 views
A solution contains naphthalene dissolved in hexane at a concentration of 10.40% naphthalene by mass. Calculate the vapor
2 answers
asked by
Ryan
964 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.
0 answers
asked by
Dani
950 views
find the point on the parabola (y=x^2) that is closest to the point (0.75,0)
0 answers
asked by
divesh
922 views
y=the negative square root of 2x
1 answer
asked by
Cambria
917 views
Does the world have enough resources 8 or 10 billion people to live decent, secure, happy, fulfilling lives? What do those terms
1 answer
asked by
Anonymous
913 views
An aqueous solution containing 35.1 grams of an unknown molecular (noneolectrolyte) compound in 152.5 grams of water was found
1 answer
asked by
Ryan
908 views
Another professional mandate to work with families is offered in
A) most colleges of education B) the Code of Ethics C) the
4 answers
asked by
finial help
901 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 answer
asked by
aaronia
895 views
True or False
It is inevitable that parents and teachers will be in conflict.
2 answers
asked by
finial help
893 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 answer
asked by
Sumit Guha
890 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
0 answers
asked by
susie
885 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
0 answers
asked by
Dani
885 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 answer
asked by
Ilma
879 views
What was Dillon's fundamental problem in the move ''School Ties''
0 answers
asked by
ted
870 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
2 answers
asked by
Please help!!
866 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 answer
asked by
heather
860 views
Please help...
Staying fit requires all of the following EXCEPT _______. A-a rigid fitness plan B-physical activity C-healthy
5 answers
asked by
mo
851 views
Can someone guide me with this question?
Four teachers and five students have volunteered to serve on the school's fundraising
3 answers
asked by
Jay
849 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?
2 answers
asked by
Alexandria
838 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
2 answers
asked by
Anonymous
823 views
Company
E December 31, 2010 Assets $42,000 $32,760 $26,880 $74,760 $114,660 Liabilities 34,440 22,932 14,515 51,584 ? December
0 answers
asked by
kelly
815 views
Figure ABCD is a square. Side AB measures 10x – 7. Side BC measures 2x + 52. Find the value of x.
1 answer
asked by
Anonymous
810 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
0 answers
asked by
Ryan
810 views
A survey of Chaicago sports fans asked them 3 questions about which they prefer. Each fan must give exactly 1 answer to each
0 answers
asked by
kavi
808 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 answer
asked by
HELP!!!!
801 views
Find the product.
(5a+2)³
1 answer
asked by
Mimi
799 views
Given the quadratic function f(x) = x2 – 18x + 81, find a value of x such that f(x) = 16.
2 answers
asked by
carol
798 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 answer
asked by
chris
785 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 answer
asked by
lindsey
784 views
*Des vacances speciales*
Pensez à des vacances spéciales (ou imaginaires) avec votre famille ou vos amis. Faites une série de
1 answer
asked by
Sydney
781 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
0 answers
asked by
Syed
779 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
0 answers
asked by
Dani
776 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 answer
asked by
Abby
769 views
How do you know what shape the graph in the xy-plane represented by x=3sin(t) and y=2cos(t) is?
3 answers
asked by
Erica
766 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 answer
asked by
Eric
765 views
Treating air as an ideal gas of diatomic molecules, calculate how much heat is required to raise the temperature of the air in
2 answers
asked by
please help me
763 views
Determine whether x+6 is a factor of x^3+4x^2-27x-90
1 answer
asked by
Brittney
758 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 answer
asked by
MadiShiley
754 views
Back to May 2011