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2010
November

Questions Asked on November 1, 2010

An Alaskan rescue plane drops a package of emergency rations to a stranded party of explorers. The plane is traveling
1. 1 answer
2. asked by Catherine
3. 11,536 views
What displacement must be added to a 50cm displacement in the +x-direction to give a resultant displacement of 85cm at 25
1. 5 answers
2. asked by Harry
3. 9,214 views
A car has a kinetic energy of 4.32 * 10^5 J when traveling at a speed of 23 m/s. What is its mass?Sorry for re-post and if
1. 3 answers
2. asked by Cory
3. 6,146 views
If 4.0 L of a 4.8 M SrCl2 solution is diluted to 50 L , what is the molarity of the diluted solution?
1. 5 answers
2. asked by Lisa
3. 5,663 views
With x people on board, a South African airline makes a profit of (1104 − 3 x) rands per person for a specific flight.A. How
1. 1 answer
2. asked by Erika
3. 5,516 views
A chemist wants to make 4.5 L of a 0.310 M CaCl2 solution what mass of CaCl2 (in g) should the chemist use
1. 3 answers
2. asked by Lisa
3. 5,361 views
As Alan is taking a shower, the soap falls out of the dish and Alan steps on it with a force of 500 N. If Alan slides forward
1. 2 answers
2. asked by Micah
3. 5,154 views
1. Gunter, the weightlifter, can lift a 230.0 kg barbell overhead on Earth. The acceleration due to gravity on the sun is 274
1. 2 answers
2. asked by Micah
3. 4,823 views
the area of a rectangle is 60cm.the length is 11cm more than the width. find the width.
1. 10 answers
2. asked by sophie
3. 4,116 views
A 14.5-L tank is filled with H2 to a pressure of 2.00 102 atm. How many balloons (each 2.00 L) can be inflated to a pressure of
1. 1 answer
2. asked by Mattie
3. 3,316 views
A spring has a spring stiffness constant, k, of 420 N/m .1. How much must this spring be stretched to store 30 J of potential
1. 1 answer
2. asked by Nick
3. 3,305 views
The hydroxyl radical (OH) is an important oxidizing agent in the atmosphere. At 298 K the rate constant for the reaction of OH
1. 4 answers
2. asked by Anonymous
3. 2,907 views
Consider the following reaction.CH4(g) + 2 O2(g) CO2(g) + 2 H2O(l) ÄH = -891 kJ Calculate the enthalpy change for each of the
1. 2 answers
2. asked by Anonymous
3. 2,880 views
A soccer ball is kicked into the air at an angle of 38 degrees above the horizontal. The initial velocity of the ball is
1. 2 answers
2. asked by Esora
3. 2,855 views
Calculate the heat of combustion:1.C2H4(g)+3O2(g)===>2CO2(g)+2h20(L) _____kJ/mol 2.2H2S(g)+3O2(g)===>2H2O(L)+2SO2(g) _____kJ/mol
1. 2 answers
2. asked by Anonymous
3. 2,854 views
A firm has a debt to asset ratio of 75%, $240,000 in debt, and net income of $48,000. Calculate return on equity.
1. 2 answers
2. asked by Syndi
3. 2,836 views
A block with mass m = 2.00kg is placed against a spring on a frictionless incline with angle (30 degrees). (The block is not
1. 3 answers
2. asked by Scott
3. 2,798 views
a 1250 kg car is pulling a 325 kb trailer. The car and trailer have an acceleration of 2,15m/sec2 together. Determine the net
1. 1 answer
2. asked by Anonymous
3. 2,793 views
a)The curve with equation: 2y^3 + y^2 - y^5 = x^4 - 2x^3 + x^2 has been linked to a bouncing wagon. Use a computer algebra
1. 2 answers
2. asked by Chelsea
3. 2,712 views
A 3.00 kg toy falls froma height of 1.00m. What will the kinetic energy of the toy be just before it hits the ground. No air
1. 1 answer
2. asked by Matt-
3. 2,649 views
A fence is to be built to enclose a rectangular area of 230 square feet. The fence along three sides is to be made of material
1. 4 answers
2. asked by REALLY NEED HELP!!!
3. 2,629 views
A ladder 25ft long is leaning against the wall of a house. The ladder is pulled away from the wall at a rate of 2 ft per second.
1. 1 answer
2. asked by Preston
3. 2,604 views
If 3.50g of Na3Po4 and 6.40g of Ba(No3)2 are added together how many grams of Ba3(PO4)2 will be produced? Which is the limiting
1. 2 answers
2. asked by Jessica
3. 2,595 views
Magnesium forms both an oxide and a nitride when burned in air. Discuss the formation of magnesium oxide and magnesium nitride
1. 2 answers
2. asked by Valerie Ayala
3. 2,555 views
If a circle is divided into 12 equal parts what is the degree measure for each of the 12 angles formed
1. 5 answers
2. asked by Taylor
3. 2,523 views
Scores on an english test are normally distributed with a mean of 33.6 and a standard deviation of 8.3. Find the 41st
1. 1 answer
2. asked by English Test Scores
3. 2,415 views
Two gases are contained in gas bulbs connected by a valve. Gas A is present in a 56 L bulb at a pressure of 213 torr. Gas B
1. 3 answers
2. asked by Bob
3. 2,342 views
Which of the following gases effuses the fastest at a given temperature?Ne CH4 Ar H2
1. 2 answers
2. asked by smith
3. 2,301 views
The average human has a density of 940 kg/m3 after inhaling and 1028 kg/m3 after exhaling.(a) Without making any swimming
1. 1 answer
2. asked by Erica--help!
3. 2,239 views
A uniformly charged insulating rod of length 13.0 cm is bent into the shape of a semicircle as shown in the figure below. The
1. 2 answers
2. asked by anonymous
3. 2,182 views
two investments were made totaling $15,000. for a certain year these investments yielded $1432 in simple interest. part of the
1. 2 answers
2. asked by matt
3. 2,117 views
A car is traveling at 45.0 mi/h on a horizontal highway.(a) If the coefficient of static friction between road and tires on a
1. 3 answers
2. asked by natalie
3. 2,026 views
what is the solubility of Pb(NO3)2, PbCl2, PbCrO4, and PbS from highest to lowest
1. 3 answers
2. asked by Ali
3. 2,017 views
Cascade Mining Company expects its earnings and dividends to increase by 7 percent peryear over the next six years and then to
1. 1 answer
2. asked by Linda Chapman
3. 1,846 views
Calculate the radial acceleration of an object on the ground at the earth's equator in m/s2, turning with the planet.
1. 2 answers
2. asked by Lisa
3. 1,828 views
2. A rental company charges a flat fee of $50 to rent a jet ski.In addition, renters must pay $17.50 per hour of ski use. Write
1. 4 answers
2. asked by Sherkyra845
3. 1,777 views
What is the centripetal acceleration of a satellite orbiting Saturn at the location exactly on Saturn radius above the surface
1. 1 answer
2. asked by Farah
3. 1,648 views
Which of the following topics relate directly to a work's authenticity?1)believability of characters 2)the appeal of a certain
1. 3 answers
2. asked by danny
3. 1,648 views
33) A first-order reaction has a rate constant of 0.33 min-1. It takes __________ min for the reactantconcentration to decrease
1. 0 answers
2. asked by JES
3. 1,645 views
A 87 g arrow is fired from a bow whose string exerts an average force of 105 N on the arrow over a distance of 76 cm.1. What is
1. 1 answer
2. asked by Nick
3. 1,586 views
How many core electrons are there in a ground state phosphorus atom?
1. 1 answer
2. asked by Ena
3. 1,544 views
Consider a thin spherical shell of radius 16.0 cm with a total charge of +28.0 µC distributed uniformly on its surface. (Take
1. 1 answer
2. asked by anonymous
3. 1,532 views
Acetic acid (CH3COOH) reacts with isopentyl alcohol (C5H12O) to form isopentyl acetate (C7H14O2), a fragrant substance with the
1. 1 answer
2. asked by Dave
3. 1,490 views
Nitric oxide (NO) reacts with molecular oxygen as follows:2NO(g) + O2(g) �¨ 2NO2(g) Initially NO and O2 are separated as shown
1. 3 answers
2. asked by Sarah
3. 1,434 views
The standard enthalpies of formation of ions in aqueous solutions are obtained by arbitrarily assigning a value of zero to H
1. 2 answers
2. asked by Kristin
3. 1,423 views
I have two questions:1. Why are action potentials usually conducted in only one direction along an axon? A. The axon hillock has
1. 1 answer
2. asked by Nikki
3. 1,421 views
Balance the following redox reactions assuming a basic solution. Show all the steps.a. MnO2(s) -> MnO4^-2 + H2 (g) b. H2O2 (aq)
1. 1 answer
2. asked by Dana
3. 1,388 views
What would be the weight of 22.0kg dog at the equator on Saturn's surface?(Saturn's mass equals 5.69 X 10^26kg, Saturn's
1. 4 answers
2. asked by mercedes
3. 1,382 views
A 50 kg crate is initially at rest on a plane inclined at an angle of 30 degrees to the horizontal. A man then pulls the crate
1. 1 answer
2. asked by Shelby
3. 1,372 views
What is/are the product(s) of the potassium permanganate reaction with (R)-4-methyl cyclohexene?Is the product a meso molecule,
1. 1 answer
2. asked by Anonymous
3. 1,370 views
you deposit 8500 dollars in an account that pays you 3.5 % interest compounded continuously. How long will it take for the money
1. 2 answers
2. asked by frank
3. 1,369 views
convert the following to an improper fraction8 1/8
1. 4 answers
2. asked by Pat
3. 1,353 views
The radius of a circle is 34 meters long,and a chord of the circle is 60 meters long.how far is the chord from the center of the
1. 2 answers
2. asked by Anonymous
3. 1,342 views
How much would a 80kg astronaut weigh on Earth? How much would they weigh 500 km above the surface of the Earth?Thank you!
1. 2 answers
2. asked by Cole
3. 1,342 views
A 50-kg astronaut experiences an acceleration of 5.0g (up) during liftoff. What is the astronaut's true weight and apparent
1. 5 answers
2. asked by mercedes
3. 1,342 views
Calculate the pressure in the flask in torr, atmosphere, and pascals if ha = 114 mm.
1. 1 answer
2. asked by Mattie
3. 1,341 views
A freight train has a mass of 5 x 107 kg. If the locomotive can exert a constant pull of 12 x 105 N, how long would it take to
1. 1 answer
2. asked by Devon
3. 1,327 views
how do you find solubility ofPb(NO3)2, PbCl2, PbCrO4, and PbS
1. 2 answers
2. asked by brit
3. 1,313 views
A 7 kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 1.4 m/s2, find the force
1. 1 answer
2. asked by Devon
3. 1,306 views
How many grams of methane gas (CH4) are in a 15.8 liter sample at 1.2 atmospheres and 27°C
1. 1 answer
2. asked by smith
3. 1,265 views
Glycerin in water diffuses along a horizontal column that has a cross-sectional area of 2.3cm^2. The concentration gradient is
1. 1 answer
2. asked by Ashleigh
3. 1,248 views
A satellite orbits Earth at a distance of 3rearth above Earth's surface. (Earth mass equals 5.97 X 10^24, earths equatorial
1. 1 answer
2. asked by mercedes
3. 1,240 views
Solve the equation by finding the square root.4u2 + 4u + 1 = 75
1. 2 answers
2. asked by Pablo
3. 1,237 views
People grow one year older every New Year's Day by eating rice cakes.(What is the meaning of 'grow' in this sentence? What other
1. 1 answer
2. asked by rfvv
3. 1,192 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 data
1. 0 answers
2. asked by JES
3. 1,187 views
I am doing a paper on HIPAA and I need to cite my work. Have the paper finished but I am having problems citing my work. Could
1. 6 answers
2. asked by Theresa
3. 1,171 views
CH3COOH + C5H12O -> C7H14O2 + H2OIf the yield for the reaction is 45%, how many grams of the product are formed when 3.58 g of
1. 0 answers
2. asked by David
3. 1,165 views
Define sensation and perception. What is the difference between them? Provide an example.
1. 2 answers
2. asked by anoymous
3. 1,156 views
Suggest three reasons why there is a market for expensive imported alcoholic drinks in countries such as Thailand, South Korea
1. 0 answers
2. asked by Remy
3. 1,156 views
In a "Rotor-ride" at a carnival, people are rotated in a cylindrically walled "room." (See Fig. 5-35.) The room radius is 5.4 m,
1. 1 answer
2. asked by Joe
3. 1,149 views
A company that uses perpetual inventory system made the following cash purchases and sales:January 1 Purchased 100 units at $10
1. 1 answer
2. asked by pj
3. 1,148 views
What does this line from the poem Flander's Fields mean?Take up our quarrel with the foe
1. 2 answers
2. asked by Anonymous
3. 1,148 views
A novice skier, starting from rest, slides down a frictionless 35.0 degree incline whose vertical height is 140 m.1. How fast is
1. 0 answers
2. asked by Nick
3. 1,141 views
What is the volume of 3.5 moles of oxygen gas (O2) at standard temperature and pressure (STP)
1. 1 answer
2. asked by Anonymous
3. 1,126 views
A group of 56 randomly selected students have a mean score of 30.8 and astandard deviation of ó = 4.5 on a placement test. Find
1. 1 answer
2. asked by Erica
3. 1,118 views
Determine the number of NH4+ ions in a 145 g sample of (NH4)2SO4.
1. 1 answer
2. asked by angela
3. 1,116 views
1. Wine is made from grapes.2. Grapes are made into wine. (Both are the same, right/) 3. The bridge is made of stone. 4. The
1. 1 answer
2. asked by rfvv
3. 1,104 views
1. I am going to do volunteer work at a cultural center.2. I am going to do volunteer work at a community center. 3. I am going
1. 1 answer
2. asked by rfvv
3. 1,103 views
What is the volume of 3.5 moles of oxygen gas (O2) at standard temperature and pressure (STP)?6.4 L 22.4 L 32.0 L 78.4 L
1. 2 answers
2. asked by smith
3. 1,078 views
An earthquake registers 6.1 on the richter scale. What is the rating on an earthquake twice as powerful?I know: M=I/Io Then what
1. 6 answers
2. asked by Ali
3. 1,070 views
Magnanimous : pusillanimous ::A) reputable:disreputable B) matrilineal:matriarchal C) megaton:megalomania D)
1. 11 answers
2. asked by Amy
3. 1,050 views
If a tax is placed on the producers of good Y, the consumers of good Y will end up paying the greatest amount of the tax if the
1. 2 answers
2. asked by john
3. 1,044 views
a storage bin is shaped like a cylinder with a hemisphere shaped top. the cylinder is 45 inches tall. the volume of the bin is
1. 2 answers
2. asked by ken
3. 1,027 views
Wiley Coyote has missed the Road Runner once again. This time he leaves horizontally off the edge of the cliff at 25 m/s. If he
1. 1 answer
2. asked by Cat
3. 1,027 views
What is the domain of y = 2/(x) + 2x>0 x<0 x>=0 All real numbers except x = 0 I think the domain is All real numbers except x =
1. 1 answer
2. asked by Matt-
3. 993 views
How do you find the slope-intercept form for 3y+2x+12=0?
1. 1 answer
2. asked by courtney
3. 979 views
a ball is thrown upward with an initial velocity of 38.9 m/s from the edge of a cliff of height H. The ball lands on the ground
1. 1 answer
2. asked by Perry
3. 971 views
NEED HELP ON THE ANSWER OF THIS PROBLEMTHE EFFICIENCY OF THE PULLEY DECREASES WITH A COEFFICIENT OF FRICTION OF 2.0 THE
1. 0 answers
2. asked by AMBER
3. 960 views
Calculate the pH during the titration of 20.00 mL of 0.1000 M CH3CH2CH2COOH with 0.1000 M NaOH after 26.5 mL of the base have
1. 1 answer
2. asked by karla
3. 947 views
Discuss the formation of the nickel ion with a 2+ oxidation number.
1. 1 answer
2. asked by Valerie Ayala
3. 947 views
For the reaction shown, compute the theoretical yield of the product (in grams) Ti(s)+2Fe(g) = TiF2(s)6.0 g Ti, 6.0g F2
1. 2 answers
2. asked by Lisa
3. 938 views
A 79 diameter wheel accelerates uniformly about its center from 110 to 360 in 4.5 .1. Determine its angular acceleration.
1. 1 answer
2. asked by Kezie
3. 934 views
Calculate the solubility (in grams per 100 mL of solution) of magnesium hydroxide in a solution buffered at pH = 12.I can get
1. 2 answers
2. asked by moe
3. 933 views
A cannon fires a shell at an angle of 55.0° above the horizontal. The shell has a mass of 17.5 kg, and its initial speed as it
1. 0 answers
2. asked by becca
3. 927 views
how do you determine what species are present in NH3 soltuion? I don't understand what exactly the species are.
1. 2 answers
2. asked by nicole
3. 919 views
for every left-handed person there are about 4 right-handed persons. If there are 30 studentsa in a class write and solve a
1. 3 answers
2. asked by Kory
3. 917 views
A box slides down a 22° ramp with an acceleration of 1.19 m/s2. Determine the coefficient of kinetic friction between the box
1. 0 answers
2. asked by Anonymous
3. 911 views
The FM band of radio waves are measured in megahertz (MHz), which are the numbers you see on the radio dial. Therefore, a radio
1. 1 answer
2. asked by Tamina
3. 903 views
when Fe(NO3)3 and KNCS were mixed they reacted together to establish an equilibrium with FE(NCS)+2.what are the changes in terms
1. 0 answers
2. asked by LP
3. 896 views
A satellite orbits Earth at a distance of 3rearth above Earth's surface. (Earth mass equals 5.97 X 10^24, earths equatorial
1. 2 answers
2. asked by mercedes
3. 888 views

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