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Questions Asked on November 13, 2010

A gymnist is swinging on a high bar. The distance between his waist and the bar is 1.1 m, as the drawing shows.At the top of the
1. 2 answers
2. asked by Mondo
3. 7,194 views
a 1300 newton crate slides 14 meters down a ramp that makes an angle of 30 degree with the horizontal. if the crate slides at a
1. 1 answer
2. asked by gavin
3. 4,602 views
A 40%-efficient car engine accelerates the 1300 kg car from rest to 20 m/s How much energy is transferred to the engine by
1. 1 answer
2. asked by andrea
3. 4,273 views
A pole-vaulter approaches the takeoff point at a speed of 9.50 m/s. Assuming that only this speed determines the height to which
1. 1 answer
2. asked by Greg
3. 3,472 views
A 1.20-L container contains 1.10 g of unknown gas at STP.What is the molecular weight of the unknown gas?
1. 3 answers
2. asked by pam
3. 3,278 views
Maria throws an apple vertically upward from a height of 1.2 m with an initial velocity of +2.7 m/s.Will the apple reach a
1. 4 answers
2. asked by helpless
3. 3,131 views
A husband and wife take turns pulling their child in a wagon along a horizontal sidewalk. Each exerts a constant force and pulls
1. 2 answers
2. asked by Abagail
3. 3,037 views
A 3.00-kg particle has a velocity of (3.00 - 4.00 ) m/s.(a) Find its x and y components of momentum. (b) Find the magnitude and
1. 4 answers
2. asked by moh
3. 2,801 views
A ball (mass = 250 g) on the end of an ideal string is moving in circular motion as a conical pendulum. The length L of the
1. 2 answers
2. asked by Miki
3. 2,743 views
I need the oxidation half reactions, reduction half reactions, and net ionic equations for the following reactions:1)magnesium
1. 2 answers
2. asked by masooma
3. 2,665 views
The weight of corn chips dispensed into a 19-ounce bag by the dispensing machine has been identified as possessing a normal
1. 2 answers
2. asked by lucky
3. 2,319 views
What is the formal charge on each of the atoms in the Lewis structure of the PO4 (-3) charge?Draw another possible Lewis
1. 1 answer
2. asked by Sarah
3. 2,214 views
An "energy bar" contains 22g of carbohydrates. If the energy bar was his only fuel, how far could a 68 kg person walk at 5 km/hr
1. 1 answer
2. asked by isabel
3. 2,086 views
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of
1. 2 answers
2. asked by Patty
3. 2,072 views
When the numerator and denominator of a fraction are each increased by 5, thevalue of the fraction becomes 3/5 When the
1. 3 answers
2. asked by Jannie
3. 1,803 views
Estimate the area under the graph of f(x)=x^2+2x from x = 4 to x = 10 using 3 approximating rectangles and left endpoints.I got
1. 1 answer
2. asked by REALLY NEED HELP!!!!
3. 1,746 views
I am having some difficulties balancing the following equations:Cr2O3(s)+CO(g)->Cr(s)+CO2
1. 1 answer
2. asked by TMV
3. 1,617 views
A robot probe drops a camera off the rim of a 245 m high cliff on Mars, where the free-fall acceleration is 3.7 m/s2.Find the
1. 3 answers
2. asked by clue
3. 1,533 views
The label on a candy bar says 410 Calories.Assuming a typical efficiency for energy use by the body, if a 74kg person were to
1. 1 answer
2. asked by Isabel-A
3. 1,350 views
A sample of Limonene has a specific rotation of +76.9. What is the % ee andmolecular composition of this sample? R(+)- is +125.6
1. 2 answers
2. asked by bjisa
3. 1,316 views
CheckPoint: Drug Use and Delinquency ResponseWrite a 200- to 350-word response answering the following questions according to
1. 2 answers
2. asked by Cristina
3. 1,314 views
Who is the richest person in Paraguay? Thanks!
1. 1 answer
2. asked by Lydia
3. 1,310 views
Object A has a mass of 500g and a density of 5.0g/cm^3; object B had a mass of 650g and a density of 5.6g/cm^3.a. Which object
1. 7 answers
2. asked by Anonymous
3. 1,305 views
lim y^3-y^2-y-2/2y^3-5y^2+5y-6y-->2
1. 1 answer
2. asked by gen
3. 1,174 views
43. President Truman issued the Truman Doctrine in response toa. Soviet aggression in Poland b. pressure by Communists on Turkey
1. 2 answers
2. asked by mysterychicken
3. 1,165 views
Suppose the method of tree ring dating gave the following dates A.D. for an archaeological excavation site.1248 1187 1199 1236
1. 1 answer
2. asked by Anonymous
3. 1,130 views
A farmer planted a field of Bt 123 corn and wants to estimate the yield in terms of bushels per acre. He counts 22 ears in
1. 2 answers
2. asked by Dean
3. 1,127 views
A basketball player makes a jump shot. The 0.700 kg ball is released at a height of 1.90 m above the floor with a speed of 7.00
1. 4 answers
2. asked by Indina
3. 1,042 views
A sample of only solid ammonium chloride was heated in a 1 L container at 500 C. At equilibrium, the pressure of NH3 (g) was
1. 1 answer
2. asked by Audrey
3. 1,027 views
Assume a parcel of air on the surface with a temperature of 29 degrees Celsius with a relative humidity of 50%. If the parcel
1. 0 answers
2. asked by Anon
3. 1,025 views
fter a foreign substance is introduced into the blood, the rate at which antibodies are made is modeled byf(t) = 27 t/8 t^2 + 3
1. 2 answers
2. asked by Erika
3. 1,020 views
If m<pqs=3x+13and m<sqt=6x-2,
1. 3 answers
2. asked by James
3. 1,012 views
A man collected $28500 on a loan of $25000 he made 4 years ago. If he charged simple interest, what was the yearly interest
1. 1 answer
2. asked by Brian
3. 1,008 views
A water skier lets go of the tow rope upon leaving the end of a jump ramp at a speed of 14.9 m/s. As the drawing indicates, the
1. 2 answers
2. asked by Brennan
3. 1,005 views
In the ground state of an atom of silver (Ag), how many electrons will there be with the quantum number l = 1?
1. 0 answers
2. asked by Shadow
3. 992 views
Use implicit differentiation to find the equation of the tangent line to the curve xy^3+2xy=9 at the point (31). The equation of
1. 1 answer
2. asked by LEON
3. 985 views
A truck is loaded with two different types of crates. When 20 of crate A and 25 ofcrate B are loaded, the truck’s 8 tonne
1. 1 answer
2. asked by Jannie
3. 970 views
An ideal gas at 20 C consists of atoms 22*10^22. 4.5 J of thermal energy are removed from the gas. What is the new temperature
1. 2 answers
2. asked by Isabel-A
3. 969 views
A cyclopropane-oxygen mixture is used as an anesthetic. If the partial pressure of cyclopropane in the mixture is 334 mm Hg and
1. 3 answers
2. asked by malik
3. 967 views
Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state
1. 3 answers
2. asked by hog tied
3. 964 views
3x-9y=632x-6y=-18 Solve system of equations by graphing then classify as Independent on dependent and consistent or
1. 3 answers
2. asked by Melissa
3. 957 views
Choose an ethical approach and explain the steps one should take when one discovers that a supervisor is performing a lawful,
1. 6 answers
2. asked by Anonymous
3. 957 views
I'm having a little trouble with this problem...it would be great if you could point out where I'm going wrong.Hours of Daylight
1. 3 answers
2. asked by Sara
3. 953 views
A monopolist faces an upward-sloping marginal cost curve. Its profit-maximizing quantity will bea. at the minimum point of the
1. 0 answers
2. asked by linda
3. 944 views
To win at BIG GAME in a certain state, one must correctly select 6 numbers from a collection of 49 numbers (1 through 49). The
1. 3 answers
2. asked by lucky
3. 930 views
A woman made $45,000 during the first year of her new job at city hall. Each year she received a 10% raise. Find her total
1. 2 answers
2. asked by bj
3. 926 views
The graph of equation is expanded vertically by a factor of 3 and reflected over the x-axis. how would you describe the graph?
1. 1 answer
2. asked by kay
3. 912 views
Part A. With what minimum speed must you toss a 190 g ball straight up to hit the 12 m-high roof of the gymnasium if you release
1. 2 answers
2. asked by gavin
3. 904 views
A rectangle is inscribed with its base on the x-axis and its upper corners on the parabola y=12−x2. What are the dimensions of
1. 1 answer
2. asked by Anonymous
3. 884 views
Which actually are the muscles of the hip?
1. 1 answer
2. asked by Jake
3. 875 views
One canned juice is 20% orange juice: another is 10% orange juice. How many liters of each should be mixed together in order to
1. 2 answers
2. asked by Melissa
3. 875 views
Use implicit differentiation to showdy/dx = [(1-xy)cot(y)]/[x^2 cot(y) + xcsc^2(y)] if xy = ln(x cot y).
1. 1 answer
2. asked by Roy
3. 864 views
What is the instantaneous velocity of a freely falling object 28 s after it is released from a position of rest? The
1. 1 answer
2. asked by helpme
3. 829 views
A man of mass 65.2 kg stands on a scaffold supported by a vertical rope at each end. The scaffold has a mass of 22.7 kg and is
1. 2 answers
2. asked by Mike
3. 815 views
Stephanie serves a volleyball from a height of 0.76 m and gives it an initial velocity of +7.2m/s straight up.How high will the
1. 3 answers
2. asked by wow
3. 808 views
A 2.30 102 N force is pulling an 80.0 kg refrigerator across a horizontal surface. The force acts at an angle of 21.0° above
1. 5 answers
2. asked by Andrew
3. 801 views
Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state
1. 2 answers
2. asked by radical10
3. 782 views
A small first-aid kit is dropped by a rockclimber who is descending steadily at 1.6 m/s. After 1.6 s, what is the velocity of
1. 2 answers
2. asked by john
3. 774 views
If solid AgNO3 is slowly added to a solution that is .05 M in NaI and .12 M in NaCl, what is the concentration of I- when AgCl
1. 1 answer
2. asked by Audrey
3. 771 views
Use the given data and calculate the enthalpy change for the following:a) B2O3(s)+3COCL2(g)--->2BCL3(g)+3CO2(g) b)Hg(l)
1. 1 answer
2. asked by Amber
3. 770 views
What does this mean? "If you have no intention of loving or being loved, then the whole journey is pointless."
1. 1 answer
2. asked by heather
3. 762 views
The Farmers called our government a republic instead of a democracy because they wanted to be clear that they were creating a
1. 1 answer
2. asked by Susie
3. 760 views
I'm having a tough time figuring out this problem...S(x) = bracket (piecewise function) a + b arcsin*(tan x/tan 66) for 0 ≤ x
1. 3 answers
2. asked by Jill
3. 759 views
For the following reaction, it is found at equilibrium at a certain temperature that the concentrations are [CO(g)] = 2.7
1. 2 answers
2. asked by Jasmin
3. 733 views
A company employs 4 times as many unskilled workers as it does skilled workers.Unskilled workers earn $650 a week, and skilled
1. 1 answer
2. asked by Jannie
3. 731 views
Light with a wavelength of 405 nm fell on a strontium surface, and electrons were ejected. If the speed of an ejected electron
1. 2 answers
2. asked by Anonymous
3. 725 views
Can you please check my answer?Solve for x. 7- 7/2x = -5 my answer: x = 42
1. 2 answers
2. asked by Elizabeth
3. 715 views
33. Because of its reliance on aircraft to carry nuclear weapons, the United States lagged behind the Soviet Union ina. hydrogen
1. 3 answers
2. asked by mysterychicken
3. 714 views
calculate the future value of an investment of $8,500 if it is to be invested for 9 years at an interest rate of 6.1%,
1. 2 answers
2. asked by tom
3. 695 views
so i am really confused if this is a hyperbole: the tattoo killed him. i am reading the same book as another girl called the
1. 1 answer
2. asked by jamie
3. 693 views
write five sentences about the role of education in successful financial planning, in which you correctly use a different verb
1. 1 answer
2. asked by genevieve
3. 691 views
An "energy bar" contains 5.6g of fat.a)How much energy is this in joules? b)How much energy is this in calories? c)How much
1. 1 answer
2. asked by andrea-1
3. 690 views
Predict the molecular and bond angle for each molecule or ion given below: SO3, ClO3-, NF3, SO42-
1. 1 answer
2. asked by Catherine
3. 673 views
An observer detects an apparent frequency of 505 hz coming from a 500 hz source. Which is true?a. the observer is moving due
1. 2 answers
2. asked by Jarod
3. 663 views
Four identical 12µC charges are placed at the corners of a square of sides 44 cm, with one additional 12µC charge placed at
1. 1 answer
2. asked by Ivan
3. 657 views
One characteristic of an oligopoly market structure is:
1. 1 answer
2. asked by tanya
3. 655 views
Predict the molecular and bond angle for each molecule or ion given below: SO3, ClO3-, NF3, SO42-
1. 1 answer
2. asked by Catherine
3. 649 views
Hey I hve problems with calculate stoichiometry problems and next week I have a test about it can someone help me out and give
1. 3 answers
2. asked by Tarkan
3. 646 views
when the concentration of CHBr3 and NaOH are both .145, the rate of the reaction is .0040 M/s. What is the rate of the eaction
1. 0 answers
2. asked by natalie
3. 629 views
A cylinder with a piston is filled with ideal gas. The gas temperature is held at 450 K. The cylinder is heated by an oven
1. 0 answers
2. asked by Need Help
3. 628 views
What website can I find information on Vampire Survival and Examples From The Movie of Vampire being killled.?????
1. 2 answers
2. asked by Anonoyms
3. 626 views
A bullet of mass 3.3 10-3 kg moving at 750 m/s impacts with a large fixed block of wood and travels 5 cm before coming to rest.
1. 1 answer
2. asked by MeganErin
3. 626 views
What is the difference between granite and gabbro?
1. 1 answer
2. asked by Jan
3. 623 views
A sample of Limonene has a specific rotation of +76.9. What is the % ee andmolecular composition of this sample?
1. 0 answers
2. asked by bjisa
3. 623 views
write a quadratic equation in the variable x having the given numbers as solutions. Use ax^2 + bx + c=0Thanks so much for the
1. 2 answers
2. asked by barb
3. 619 views
A ball is thrown straight up with an initial speed of 60 m/s. How high does it go? Assume the accelera-tion of gravity is 10
1. 1 answer
2. asked by stan
3. 617 views
a 30. L sample of gas exerts 200. mm Hg pressure at 10 degrees C. What volume does the gas have at 300. mm Hg and 25 degrees C?
1. 1 answer
2. asked by kaitlin
3. 616 views
A university bookstore recently sold a wire-bound graph-paper notebook for $2.64, and a college-ruled notebook for $3.61. At the
1. 2 answers
2. asked by running wild
3. 615 views
Contrast utilitarian and deontological approaches to a dilemma involving a potential employee liberally enhancing (lying on) her
1. 2 answers
2. asked by Anonymous
3. 615 views
1.00 mol of A and 2.00 mol of B are placed in a 5 Liter container. after equilibrium has been established, .50 mol of D is
1. 1 answer
2. asked by Audrey
3. 615 views
A 0.2 kg mass hangs at the end of a wire. what is the tension in the wire if the ball is whirled around in a horizontal circle
1. 2 answers
2. asked by kwaku
3. 614 views
A ball is thrown vertically upward with aspeed of 23.7 m/s from a height of 2.0 m. How long does it take to reach its high- est
1. 1 answer
2. asked by stan
3. 612 views
A ball is thrown vertically upward with aspeed of 27.6 m/s. How high does it rise? Answer in units of m.
1. 2 answers
2. asked by wesley
3. 606 views
A dinner plate drops and breaks. This best illustrates the ______ law of THERMODYNAMICSA. 1st b. 2nd c. 3rd d. 4th I am inclined
1. 2 answers
2. asked by Jael
3. 603 views
are there any objects that represent perseverence? and why? i need this for an english projcet
1. 5 answers
2. asked by stephanie
3. 598 views
A certain antibiotic reduces the number of bacteria in your body by 10% each does. a)If four does of the antibiotic are taken,
1. 3 answers
2. asked by Emily
3. 597 views
How many grams of potassium formate, KHCOO, must be added to 500 mL of a .07 M solution of HCOOH to produce a buffer solution
1. 1 answer
2. asked by Audrey
3. 591 views
lim xcsc(3x)x-->0
1. 2 answers
2. asked by gen
3. 590 views
Select the set of equations that represents the following situation: Mike invested $706 for one year. He invested part of it at
1. 2 answers
2. asked by running wild
3. 588 views
A hall has 1325 seats. These are arranged in rows of 35 seats or 40 seats. The ratio of35-seat rows to 40-seat rows is 3 : 4.
1. 0 answers
2. asked by Jannie
3. 587 views

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