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Questions Asked on October 24, 2010

Now assume that the pitcher in Part D throws a 0.145-kg baseball parallel to the ground with a speed of 32 m/s in the +x
1. 4 answers
2. asked by Eden
3. 17,214 views
why is a stick of gum like a sneeze?
1. 20 answers
2. asked by maman
3. 8,784 views
For the elementary reactionNO 3 + CO → NO2 + CO 2 the molecularity of the reaction is __________, and the rate law is rate =
1. 3 answers
2. asked by JES
3. 7,627 views
A boy standing on top of a hill throws a stone horizontally. The stone hits the ground at the foot of the hill 2.5 s later. How
1. 3 answers
2. asked by Steve smith
3. 5,816 views
A flask is charged with 0.124 mol of A and allowed to react to form B according to the reaction A(g) → B(g). The following
1. 2 answers
2. asked by tere
3. 5,120 views
Two identical cars are traveling at the same speed. One is heading due east and the other due north, as the drawing show. What
1. 2 answers
2. asked by david
3. 4,863 views
Olaf is standing on a sheet of ice that covers the football stadium parking lot in Buffalo, New York; there is negligible
1. 4 answers
2. asked by Eden
3. 4,579 views
A shopper in a supermarket pushes a cart with a force of 35 N directed at an angle of 52(angle sign here) downward from the
1. 1 answer
2. asked by Edwin
3. 4,120 views
Write in miles per hour. Round to the nearest tenth.3.7 mi/min
1. 4 answers
2. asked by Anonymous
3. 3,928 views
A stone is dropped from the top of a cliff. It is seen to hit the ground below after 3.90 s. How high is the cliff?
1. 4 answers
2. asked by Jen
3. 3,736 views
When an electron makes a transition from the n=3 to the n=2 hydrogenatom bohr orbit, the energy difference between these two
1. 3 answers
2. asked by Wyatt
3. 3,436 views
A large open tank is filled with water to a depth of 15 m.A spout located 10.0 m above the bottom of the tank is then opened as
1. 1 answer
2. asked by darin
3. 3,264 views
Only 0.02% of credit card holders of a company report the loss or theft of their credit cards each month. The company has 15,000
1. 3 answers
2. asked by Todd
3. 3,092 views
Find the points on the curve y= (cos x)/(2 + sin x) at which the tangent is horizontal.I am not sure, but would I find the
1. 1 answer
2. asked by CMM
3. 3,028 views
Determine the ratio of cations to anions for the following ionic compoundsa. potassium, a salt substance b. calcium floride,
1. 3 answers
2. asked by Jess
3. 2,771 views
The U.S army's parachuting team, the Golden Knights, are on a routine jumping mission over a deserted beach. On a jump, a 65 kg
1. 3 answers
2. asked by c
3. 2,727 views
An engineer is designing a runway for an airport. Several planes will use the runway and theengineer must design it so that it
1. 3 answers
2. asked by grace
3. 2,598 views
The data in the table below were obtained for the reaction:A + B → P 3 Experiments 1 (A) (M): 0.273 (B) (M): 0.763 Initial
1. 3 answers
2. asked by jack ross
3. 2,506 views
Wachowicz Corporation issued 15-year, noncallable, 7.5% annual coupon bonds at their par value of $1,000 one year ago. Today,
1. 2 answers
2. asked by Anonymous
3. 2,499 views
4. Which of the following sentences contains “passive voice?” (Points : 1)The airplane was wrecked by the wind. The wind
1. 1 answer
2. asked by cc
3. 2,339 views
A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 64.7¡ã above the horizontal. The rocket is fired
1. 4 answers
2. asked by hy
3. 2,139 views
A drawing shows a device that can be used to measure the speed of a bullet. The device consists of two rotating disks, separated
1. 2 answers
2. asked by Sarah
3. 2,135 views
There are 10 packets of ham. Of the packets, 2/5 are turkey ham. Each packet of turkey ham weighs 1/3 pound. What is the total
1. 1 answer
2. asked by Jax
3. 2,110 views
How much Ba(OH)2 is needed to neutralize 3.2 moles of H2SO4 and 4.5 moles of HCl mixed together in 755 mL of water?
1. 4 answers
2. asked by Lindsay
3. 2,059 views
Marty has 6 more pogs than Jen. After he gives 10 pogs to Jen, how many more pogs will Jen have than Marty?
1. 7 answers
2. asked by McK
3. 1,993 views
TABLE 12-11Parents complain that children read too few storybooks and watch too much television nowadays. A survey of 1,000
1. 2 answers
2. asked by GN
3. 1,929 views
A hockey puck sliding on a frozen lake comes to rest after traveling 265 m.If its initial velocity is 4.2 m/s, what is its
1. 2 answers
2. asked by Lauren
3. 1,903 views
A volleyball is spiked so that it has an initial velocity of 18 m/s directed downward at an angle of 50¡ã below the
1. 2 answers
2. asked by hy
3. 1,855 views
The x component of a certain vector is -86.0 units and the y component is +75.0 units.The magnitude of the vector is 114 m. What
1. 1 answer
2. asked by Sydney
3. 1,749 views
TABLE 12-6The dean of a college is interested in the proportion of graduates from his college who have a job offer on graduation
1. 1 answer
2. asked by NDW
3. 1,734 views
A perchloric acid solution is composed of 168.75 g of perchloric acid and 81.25 mL of pure water. What is the percent by mass of
1. 3 answers
2. asked by Helpplease
3. 1,693 views
a piece of furniture that weighs 500 newtons is pushed along the ground for a distance of 10 meters then lifted 2 meters above
1. 2 answers
2. asked by elizabeth
3. 1,677 views
An electric drill starts from rest and rotates with a constant angular acceleration. After the drill has rotated through a
1. 1 answer
2. asked by Jordan
3. 1,633 views
Would you please tell me if these are right?A sample of helium has a volume of 325 ml and a pressure of 655 mm hg. What will be
1. 2 answers
2. asked by Jason
3. 1,530 views
golf is just as popular as it is on earth. A golfer tees off and drives the ball 4.5 times as far as he would have on earth,
1. 2 answers
2. asked by kya
3. 1,499 views
A package in an airplane moving horizontally at 150m/s is dropped when the altitude is 490m. (a) How long does it take the
1. 2 answers
2. asked by Anonymous
3. 1,454 views
Of KCl and NaCl, which has a higher lattice energy? What is lattice energy? Lost. Please help.
1. 3 answers
2. asked by Sally
3. 1,436 views
Carla spends 6/4 hours exercising everyday for 12 days.She spends 1/2 of her exercise time everyday lifting weights.How much
1. 2 answers
2. asked by Jax
3. 1,382 views
For the reaction C3H8+5CO2=3CO2+4H2OHow many moles of c3h8 are needed to make 3.6 grams of c3h8? I think the ans is
1. 2 answers
2. asked by Lillian
3. 1,328 views
calculate the work done when 50.0g of tin dissolves in excess acid at 1.00 atm and 25 degrees c.
1. 1 answer
2. asked by veronica
3. 1,303 views
What is the meaning of the song maria from west side story?What is the meaning of the song sandy from grease
1. 9 answers
2. asked by Courtney
3. 1,277 views
A 60.5-kg person, running horizontally with a velocity of +3.76 m/s, jumps onto a 10.4-kg sled that is initially at rest.(a)
1. 1 answer
2. asked by Xavier
3. 1,267 views
True or False:Laid end to end, the blood vessels in your body would circle the Earth two and a half times. 2. The _________ is
1. 2 answers
2. asked by Birdy
3. 1,245 views
A merry go round makes 2 revolutions every 2 s. A child is sitting 1.80 m from the center. Calculatea)The period of the merry go
1. 1 answer
2. asked by Carmen
3. 1,241 views
Your 401 (k) Account at East Coast YachtsYou have been at your job for East Coat Yachts for a week now and have decided you need
1. 2 answers
2. asked by Kelly
3. 1,240 views
In a titration, 3.4 g of an acid (HX) requires 21.5 mL of 0.85 M NaOH(aq) for complete reaction. What is the molar mass of the
1. 3 answers
2. asked by Lulu
3. 1,237 views
Calculate the [H3O+] of the following polyprotic acid solution: 0.145 M H3C6H5O3?
1. 0 answers
2. asked by Anonymous
3. 1,236 views
Can you help me paraphrase the poem "A Dirge" by P.B. Shelley? Thank you very much!1)A dirge is a song that is sung at a
1. 0 answers
2. asked by Franco
3. 1,235 views
How many calories of energy are needed to vaporize a 20.2 g sample of liquid ethanol at its normal boiling point of 78 oC?
1. 1 answer
2. asked by Sam
3. 1,235 views
While shopping, Jill spent six times as much as Nan. If they spent a total of $112, how much did each person spend?
1. 1 answer
2. asked by Dave
3. 1,221 views
A 100.0 mL portion of 0.250 M calium nitrate solution is mixed with 400.0 mL of .100M nitric acid solution. What is the final
1. 5 answers
2. asked by alex
3. 1,220 views
In an action-adventure movie, the hero lifts the 89-kg villain straight upward through a distance of 2.0 m in 0.47 s at a
1. 0 answers
2. asked by Xavier
3. 1,195 views
In an excess of NH3(aq), Cu2+ ion forms a deep blue complex ion, Cu(NH3)4^2+ (Kf=5.6x10^11). Calculate the concentration of Cu2+
1. 1 answer
2. asked by Bam
3. 1,188 views
What is the dominant intermolecular forces for C2H5OC2H5 (diethyl ether)?Is it dispersion and polar?
1. 1 answer
2. asked by Anonymous
3. 1,185 views
TABLE 12-3A computer used by a 24-hour banking service is supposed to randomly assign each transaction to one of 5 memory
1. 1 answer
2. asked by WMD
3. 1,158 views
The caffeine content of a cup of home-brewed coffee is a normally distributed random variable with a mean of 115 mg with a
1. 0 answers
2. asked by Alejandra
3. 1,147 views
Olaf is standing on a sheet of ice that covers the football stadium parking lot in Buffalo, New York; there is negligible
1. 2 answers
2. asked by Nikohl
3. 1,145 views
A military helicopter on a training mission is flying horizontally at a speed of 70.0 m/s and accidentally drops a bomb
1. 2 answers
2. asked by Anonymous
3. 1,144 views
A bullet is fired horizontally from a height of 78.4m and hits the ground 2400 m away. With what velocity does the bullet leave
1. 1 answer
2. asked by Steve smith
3. 1,137 views
According to the following reaction, how many grams of sulfur trioxide will be formed upon the complete reaction of 21.2 grams
1. 2 answers
2. asked by nik
3. 1,134 views
A building is 2 ft from a 9-ft fence that surrounds the property. Worker wants to wash window in the building 13 ft from the
1. 3 answers
2. asked by anonymous
3. 1,132 views
A pitcher throws a 0.140-kg baseball, and it approaches the bat at a speed of 35.0 m/s. The bat does Wnc = 65.0 J of work on the
1. 0 answers
2. asked by Xavier
3. 1,129 views
Explain the importance of the feeding relationship between young infants and teachers and how teachers promote this
1. 1 answer
2. asked by Anonymous
3. 1,126 views
After a taste of the morning coffee that his wife had made, Paul asks, "Did you do something different with the coffee this
1. 1 answer
2. asked by rog
3. 1,111 views
Q2) Given a firm’s demand function, P = 24 - 0.5Q and the average cost function, AC = Q2 – 8Q + 36 + 3/Q, calculate the
1. 1 answer
2. asked by Anonymous
3. 1,104 views
find (FxG)(X) and (GxF)(X) when f(x)=5x^2-1 and g(x)=2/x
1. 1 answer
2. asked by lexi
3. 1,080 views
4. An ice skater pulls three small children, one behind the other, with masses 25kg, 31 kg and 35kg. Assume that the ice is
1. 1 answer
2. asked by Sandy
3. 1,067 views
The x component of a certain vector is -86.0 units and the y component is +75.0 units.What is the magnitude of the vector?
1. 1 answer
2. asked by Haley
3. 1,058 views
What bird is like a drink of water?***Is it a swan?***
1. 2 answers
2. asked by Bridgett
3. 1,052 views
find (FxG)(X) and (GxF)(X) when f(x)=5x^2-1 and g(x)=2/x
1. 1 answer
2. asked by lexi
3. 1,046 views
The knot at the junction is in equilibriumunder the influence of four forces acting on it. The F force acts from above on the
1. 1 answer
2. asked by Kaitlyn
3. 1,044 views
A cue ball (mass = 0.150 kg) is at rest on a frictionless pool table. The ball is hit dead center by a pool stick which applies
1. 2 answers
2. asked by Xavier
3. 1,027 views
At 9:00 pm the outside temperature was 20 celcius, by midnight the temperature had dropped x degrees.Which of the following
1. 1 answer
2. asked by carolyn
3. 1,010 views
Find the length of the entire perimeter of the region insider = 11 sin (theta) but outside r = 2
1. 2 answers
2. asked by Anonymous
3. 972 views
A perchloric acid solution is composed of 168.75 g of perchloric acid and 81.25 mL of pure water. What is the percent by mass of
1. 2 answers
2. asked by Helpplease
3. 970 views
15. Discuss the following hypothetical pieces of research and point out the problems with the research design which prevent you
1. 1 answer
2. asked by elana
3. 965 views
The boy on the tower of height h = 10 m throws a ball a distance of x = 68 m, as shown. At what speed, in m/s, is the ball
1. 1 answer
2. asked by Nina
3. 952 views
A two-stage rocket moves in space at a constant velocity of 4650 m/s. The two stages are then separated by a small explosive
1. 0 answers
2. asked by Xavier
3. 950 views
If a car starts from rest and travels for 5.0 seconds with a uniform acceleration of +1.5 m/s2. The driver then applies the
1. 2 answers
2. asked by grace
3. 947 views
For the reaction C3H8+5CO2=3CO2+4H2OHow many grams of O2 react with 8.80grams of C3H8? I think the ans is 32.0gO2
1. 1 answer
2. asked by Lillian
3. 940 views
this pattern represents the square numbers 1,4,9,16,25,36 diagram to explain square numbers.pls. help
1. 4 answers
2. asked by Carol
3. 934 views
A fighter pilot dives his plane toward the ground at 345 m/s. He pulls out of the dive on a vertical circle. What is the minimum
1. 5 answers
2. asked by Adam
3. 922 views
A bicycle wheel has a diameter of 64.2 cm and a mass of 1.79 kg. Assume that the wheel is a hoop with all of the mass
1. 0 answers
2. asked by A
3. 921 views
A baseball is seen to pass upward by a window 24 m above the street with a vertical speed of 8 m/s. The ball was thrown from the
1. 1 answer
2. asked by Jen
3. 912 views
Using this TABLE 12-6 for the following questions:The dean of a college is interested in the proportion of graduates from his
1. 0 answers
2. asked by Anonymous
3. 908 views
The data in the table below were obtained for the reaction:A + B → P 3 Experiments 1 (A) (M): 0.273 (B) (M): 0.763 Initial
1. 1 answer
2. asked by jack ross
3. 899 views
what will you measure to record data of the experiment of mixing water and sugar/salt dissolved in hot water?
1. 1 answer
2. asked by tee
3. 893 views
CAn an object be increasing its speed with negative acceleration-----explain why or why notgive an example of when both velocity
1. 1 answer
2. asked by Kavi
3. 891 views
I need to identify the gerund or gerund phrase and identify it as a subject, a predicate noun, a direct object, or an object of
1. 4 answers
2. asked by Sandi
3. 885 views
What are the IUPAC names of the following alkane.CH3CHCH3 I CH3CH2CH2CHCH2CHCH3 I CH3 i thought it was 2-methyl-4-propylheptane
1. 1 answer
2. asked by rebekah
3. 859 views
We have an aqueous solution that contains22% (by mass) of a hypothetical solute Z. The formula weight of the solute Z is 173
1. 1 answer
2. asked by Anonymous
3. 855 views
A compact disk, which has a diameter of 12.0 cm, speeds up uniformly from zero to 2.50 rev/s in 2.10 s. What is the tangential
1. 0 answers
2. asked by mary
3. 843 views
Example of a physical change that has a colour change?
1. 2 answers
2. asked by Javal
3. 840 views
Ca3(PO4)2 + 2H2SO4 = 2CASO4 + Ca(H2PO4)2How many moles of CaSO4 can be produced by the reaction of 0.39 moles of Ca3(PO4)2 with
1. 1 answer
2. asked by neil
3. 832 views
Do some research into why the United States has been so slow to adopt metric measurements. What problems does this cause for the
1. 0 answers
2. asked by ca
3. 819 views
Approximately how much is a 10 mile high stack of pennies worth?
1. 1 answer
2. asked by marg
3. 819 views
Calculate the cell potential for a cell based on the reactionCu(s) + 2Ag+(aq) -> Cu2+(aq) + 2Ag(s) when the concentrations are
1. 2 answers
2. asked by Alex
3. 806 views
P12-14 Strategic Capital Investment DecisionsSmith Electronics manufactures portable CD players. Lillian Perez, the VP of
1. 1 answer
2. asked by Anonymous
3. 802 views
I am currently reading Chapter 7 of "Lord of the Flies", and one of my study questions from chapter 6, I failed to find in
1. 3 answers
2. asked by Goober
3. 797 views
Question: Although they had many new weapons, Civil war generals relied on old battlefield strategies. How might such weapons
1. 3 answers
2. asked by Ah
3. 791 views

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