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2011
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Questions Asked on April 24, 2011

A 32.5g cube of aluminum initially at 45.8 C is submerged into 105.3g water at 15.4 C. What is the final temp of both substances
1. 4 answers
2. asked by Phillip
3. 6,541 views
A 74.5 kg ice skater moving to the right with a velocity of 2.62 m/s throws a 0.21 kg snowball to the right with a velocity of
1. 1 answer
2. asked by Elizabeth
3. 4,909 views
The physics of a golf ball and kinetic energy.When a 0.045 kg golf ball takes off after being hit, its speed is 41 m/s. a) What
1. 1 answer
2. asked by aly
3. 3,693 views
A roller coaster of mass 1000.0 kg passes point A with a speed of 1.80 m/s?point a= 30m point b= 0m point c= 25m point d= 12m 1.
1. 2 answers
2. asked by aly
3. 3,380 views
A cube of ice is take from the freezer at -8.5C and placed in a 95g calorimeter aluminum cup containing 310g of water at 20degC.
1. 3 answers
2. asked by Mark
3. 2,686 views
1. The physics of Mars and its two moons.Mars has two moons, Phobos and Deimos (Fear and Panic, the companions of Mars, the god
1. 2 answers
2. asked by aly
3. 2,512 views
Triangle PQR has vertices P(1,2), Q(25,2) and R(10,20).Find the coordinates of the centroid. Find the coordinates of the
1. 1 answer
2. asked by Ginny
3. 2,424 views
A woman with a mass of 65kg climbs a set of stairs that are 3m high. How much gravitational potential energy does she gain?Thank
1. 2 answers
2. asked by Loui
3. 2,256 views
tennyson's "the lady of shalott has a rhythm and a rhyme pattern that make it sound likea. a sonnet b. an elegy c. a nursery
1. 4 answers
2. asked by S.S.
3. 2,184 views
The cation M2+ reacts with NH3 to form a series of complex ions as follows:M2+ + NH3 M(NH3)2+ K1 = 102 M(NH3)2+ + NH3 M(NH3)2 2+
1. 1 answer
2. asked by richard
3. 2,179 views
Genetic InheritanceExercise 1: F1 Hybrid Cross Results: Punnett Square for F1 Cross ¡V Expected Genetic Outcomes F1 Parent,
1. 2 answers
2. asked by Stumped
3. 2,172 views
a sofa sells for $840. the sale price is $714., find the percent of decrease of the sale price from the regular price
1. 2 answers
2. asked by marlo
3. 2,032 views
What mass of the following solution contains 0.100 mol of solute? 0.334 molality NH4NO3
1. 1 answer
2. asked by Anonymous
3. 1,871 views
Two identical wooden barrels are fitted with long pipes extending out their tops. The pipe on the first barrell is 1 foot in
1. 2 answers
2. asked by Loui
3. 1,642 views
Sam invested $1950 part of it at 6% and the rest at 8% yearly interest. The yearly income on the 8% invest was 6$ more then
1. 3 answers
2. asked by Jacob
3. 1,572 views
The physics of orbital radius and orbital period of a planet.If a small planet were discovered whose orbital period was twice
1. 1 answer
2. asked by aly
3. 1,558 views
A nitric acid solution is found to have a pH of 2.70. Determine [H3O+],[OH-], and the number of moles of HNO3 required to make
1. 1 answer
2. asked by Jessica
3. 1,500 views
1.) determine two pairs of polar coordinates for the point (-4sqrt3, 4sqrt3)with 0degrees less than or equal to theta less than
1. 4 answers
2. asked by YOSHI
3. 1,457 views
If an 80kg sprinter can accelerate from a standing start to a speed of 10 m/s in 3s, what average power is generated
1. 1 answer
2. asked by Loui
3. 1,418 views
2, -4, 8,...The first term of the sequence above is 2, and every term after he first term is -2 times the preceding term. How
1. 1 answer
2. asked by allison
3. 1,404 views
The atomic mass of iron oxide is 160 atomic mass units. What is the atomic mass of iron if a molecule of iron oxide consists of
1. 4 answers
2. asked by Abbie
3. 1,366 views
A street light is at the top of a 19 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 5 ft/sec along a
1. 0 answers
2. asked by saud
3. 1,254 views
Calculate delta G and Kc.2Al(s) + 3I2(s) to 2Al3+(aq) + 6I-(aq)
1. 0 answers
2. asked by Sonali
3. 1,183 views
In a bag there are 7 red tiles, 3 blue tiles, and 2 purple tiles. How many and what color tiles would you have to add to the bag
1. 2 answers
2. asked by Jeffrey
3. 1,180 views
What is the mole fraction of benzene C6H6 in the VAPOR PHASE from a solution consisting of a mixture of benzene and n-hexame
1. 2 answers
2. asked by Jude
3. 1,164 views
the birth of healthy, full term infants in the United States is nearly normally distributed. The mean weight is 3,500 grams, and
1. 1 answer
2. asked by ryee
3. 1,144 views
sketch, label and mark each figure.1.Isoscles obtuse triangle TRI with vertex angle T. 2.Rhombus RHOM with acute <H and the
1. 1 answer
2. asked by susi
3. 1,127 views
Meka plans to bake a large circular cookie for her brother. She wants to decorate the outer edge of the cookie with small pieces
1. 3 answers
2. asked by mickeymouse
3. 1,114 views
i forgot how to convert a decimals to a fractions, can u help me solve this:0.14 percent: 14% fraction: ?
1. 1 answer
2. asked by sara
3. 1,094 views
In a survery, students were asked whether they play basketball or tennis. Of 34 students, 24 play basketball and 13 students
1. 1 answer
2. asked by Trace
3. 1,065 views
Thank you very much for your information.Here are some sentences I'd like you to check1) You've to enter the airport. Don't use
1. 1 answer
2. asked by Henry1
3. 1,046 views
Okay so I'm trying to work out how many mm of rain fell in a certain area.I've got the total volume/capacity that fell
1. 1 answer
2. asked by Tatiana
3. 1,039 views
Evaluate the polynomial for x = -2.Simplify your answer 3x² - 2x +2
1. 1 answer
2. asked by Mary
3. 1,021 views
Please help to convert the following(Show work please!!!1.62500 Grams to kilograms 62500 Grams to Pounds 62500 Grams to Ounces
1. 6 answers
2. asked by Mike...
3. 1,016 views
Determine how many grams of water can be produced from excess propane C3H8 and 2.55g oxygen? MM 02 = 32 and MM H2O = 18.2.I
1. 1 answer
2. asked by Robyn
3. 1,011 views
Assume a $4,000 investment and the following cash flows for two alternatives.Year Investment X Investment Y 1 $1,000 $1,300 2
1. 2 answers
2. asked by PLewis
3. 1,008 views
A .095kg aluminum sphere is dropped rom the roof of a 45m building.If 65% of the thermal energy produced when the sphere hits
1. 1 answer
2. asked by Mark
3. 1,002 views
If a pro basketball player has a vertical leap of about 35 inches, what is his hang time? Use the hang-time function V = 48T²
1. 1 answer
2. asked by Juan
3. 985 views
Can someone give me some feedback on this compare and contrast essay that I have completed.Into day’s society, online social
1. 3 answers
2. asked by Cherrel
3. 974 views
With density g/cm3copper 8.93 silver 10.5 mercury 13.6 will a block of copper or silver float higher in mercury in liquid form?
1. 1 answer
2. asked by Loui
3. 970 views
A professor knows that in her class 37% of the students have passed an Algebra course, 29% have passed an English course, and
1. 1 answer
2. asked by Confused
3. 966 views
Arrange the following 0.10 M solutions in order of increasing H+ : HClO4 , H2SO4, NH4Br , KCN, KBr, KOH
1. 2 answers
2. asked by stephen
3. 946 views
Given that 12g of carbon combines completely with 16g of oxygen to form carbon monoxide, how many grams of carbon monoxide can
1. 3 answers
2. asked by Abbie
3. 934 views
A radiation worker is subject to a dose of 150 mrad/h of protons for one 40 h work week. How many times the yearly allowable
1. 1 answer
2. asked by Leigh
3. 919 views
explain how mitosis helps an organism to grow.
1. 2 answers
2. asked by princess
3. 877 views
A clock with a pendulum made of steel has a period of 1.000 s at 20.0°C. The temperature is decreased to 4°C.By how much does
1. 1 answer
2. asked by kia
3. 857 views
Pharmacists who are trained in the United States must earn a Pharm.D. degree from an accredited college or school of pharmacy.
1. 10 answers
2. asked by Anonymous
3. 829 views
Let x be a binomial random variable with n = 10 and p = .4 Find the values.P (x›4) P (x≤4) I could really use some examples
1. 0 answers
2. asked by sonney32
3. 820 views
calculate both the pearson and spearman correlation coefficient for the data below. state whether ther are significant? writ a
1. 1 answer
2. asked by ryee
3. 812 views
What does the (n.d.) stand for in the following sample citation:GovTrack. (n.d.). Brian Higgins U.S. Representative, New
1. 1 answer
2. asked by Anonymous
3. 804 views
gold and silver have densities of 19.3 and 10.5 grams per cubic centimer, respectively. If you have eual volumes of each, which
1. 1 answer
2. asked by Loui
3. 798 views
In a 1970’s game show, a contestant was given a choice of three doors of which one contained a prize. The other two doors
1. 2 answers
2. asked by Lisa
3. 797 views
12. Enter the following Marks for Assignment One figures:Name Assgn 1 John 10 Mary 12 Emma 15 Pita 15 Avi 15 Ramu 10 Sani 11 13.
1. 3 answers
2. asked by Shinal
3. 792 views
Where do we put the "and" when writing a number, 1234.567 for example, in words?Some references say, "one thousand two hundred
1. 3 answers
2. asked by Daniel
3. 785 views
A 5.55g sample of a weak acid with Ka=1.3 x10^-4 was combined with 5.00 mL of 6.00 M NaOH and the resulting solution was diluted
1. 1 answer
2. asked by Trista Nigh
3. 780 views
1. Hay que ______ agua, ¿verdad?a. conserva b. conservar c. conservé d. conservo A? 2. Quiero dormir. Por favor, ____ la luz.
1. 2 answers
2. asked by mysterychicken
3. 773 views
Solve. 25x^4-15x^2+2=0
1. 1 answer
2. asked by Mary
3. 762 views
Bob Pursley rechecked my question and it was correct if you scan down but he didn't direct me where to find direction of
1. 1 answer
2. asked by Russ
3. 753 views
Let us assume that the muon production happens at an altitude of about 15 kilometers above the surface of the Earth, and that
1. 1 answer
2. asked by Tisha
3. 745 views
Mrs. Baker has to choose 2 students to lead the class field trip. If she draws from a list of 6 boys and 6 girls, what is the
1. 3 answers
2. asked by math
3. 729 views
A professor knows that in her class 37% of the students have passed an Algebra course, 29% have passed an English course, and
1. 0 answers
2. asked by Confused
3. 727 views
Oxygen molecules contain two oxygen atoms, and carbon dioxide molecules contain one atom of carbon and two atoms of oxygen. How
1. 1 answer
2. asked by Loui
3. 720 views
If a pro basketball player has a vertical leap of about 35 inches, what is his hang time? Use the hang-time function V = 48T²
1. 2 answers
2. asked by Julie
3. 715 views
For the following equation, state the value of the discriminant and then describe the nature of the solutions.-15x² + 2x + 13 =
1. 1 answer
2. asked by Anonymous
3. 711 views
Hey I'm working on a math assignment and I'm trying to work out the total amount of rainfall that fell in a certain area. Would
1. 4 answers
2. asked by Tatiana
3. 710 views
At a neighboring university, the average salary is also $45,000 and the distribution is normal. If $47,000 has a z score of 1.5,
1. 2 answers
2. asked by maria
3. 706 views
The vapor pressure of pure water at 90celsius is normally 525.8 but decreased 483mmHg upon addition of an unknown amount of KNO3
1. 1 answer
2. asked by Jude
3. 705 views
What is the mass of a lead sinker witha volume of 3cm3? please show workThank you
1. 1 answer
2. asked by Loui
3. 702 views
Physics Question Help please!!!?A 3.70 kg mass attached to a spring oscillates with a period of 0.375 s and an amplitude of 17.0
1. 1 answer
2. asked by Anonymous
3. 697 views
A wife has applied farsakh in the syariah court. Then later she moved out of thehome. The husband, a practicing Islamic worker
1. 2 answers
2. asked by syah
3. 692 views
We have 30 grams of clay. We understand that Density=Mass/Volume. We understand that the Density of water is 1.0 and in order
1. 5 answers
2. asked by Paul
3. 691 views
Use the quadratic formula to solve the equation.x² - x = -2 Type an exact answer, using radicals as needed. Express complex
1. 2 answers
2. asked by Mary
3. 690 views
14. When one buys insurance, you need to be clear about your needs.__ Pronoun shift in number __ Pronoun shift in person __
1. 2 answers
2. asked by tony
3. 682 views
In a survery, students were asked whether they play basketball or tennis. Of 34 students, 24 play basketball and 13 students
1. 1 answer
2. asked by Trace
3. 662 views
pls.check my english grammar if it is correct usage.i remeber when i was at my young age i was always doing all the i could.
1. 3 answers
2. asked by jessie
3. 657 views
Total Rainfall = rainfall mm x area coveredIn order to ensure that our values are correct we will need to convert the area
1. 1 answer
2. asked by Tatiana
3. 654 views
I need help on a camparative essay between Barbie Doll and Phenomenal Woman and I would like to include Mirrors. In Barbie Doll
1. 1 answer
2. asked by Evelyn
3. 637 views
A 2.5 gram sample of a hydrocarbon containing C, H, N, O is combusted in excess oxygen. The nitrogen compounds that are formed
1. 3 answers
2. asked by Kim
3. 631 views
which of the following poems is a dramatic monologue?a. my last duchess b. love among the ruins c. childe roland to the dark
1. 1 answer
2. asked by S.S.
3. 623 views
While vacationing,john has dinner at a restaurant in Japan and his tabcomes to 3,428 yen. The exchange rate at the time of his
1. 5 answers
2. asked by mike...
3. 623 views
At a certain temperature, 514, Kp for the reaction,Cl2(g) + Br2(g) <=> 2 BrCl(g), is 6.98 x 107. Calculate the value of DGo in
1. 0 answers
2. asked by sam
3. 622 views
Jack usually mows his lawn in 4 hours. Marilyn can mow the same in 5 hours. How much time would it take for them to mow the lawn
1. 2 answers
2. asked by Mary
3. 618 views
A 20 cm long, 180g rod is pivoted at one end. A 17g ball of clay is stuck on the other end. What is the period if the rod and
1. 0 answers
2. asked by Dan
3. 616 views
The total pressure in a flask containing air and ethanol at 25.7C is 878 mm Hg. The pressure ofthe air in the flask at 25.7C is
1. 2 answers
2. asked by Deanna
3. 616 views
Viruses are infectious agents that often cause diseases in plants. Different viruses have different potency levels, and this
1. 0 answers
2. asked by Stephanie
3. 616 views
I forgot to include these other sentences. As they are instructions, I'm not sure whether it is possible to use "you have to..,
1. 1 answer
2. asked by Henry1
3. 610 views
This is not in order. Please put the story about "The wishing well in order"1. Today is a particularly busy day at the well. 2.
1. 2 answers
2. asked by Rachel
3. 603 views
Explain hoW Percy Bysshe Shelley relates the skylark's song to his own efforts to write poetry in "To a Skylark."
1. 1 answer
2. asked by S.S.
3. 600 views
Arrange the following 0.10 M solutions in order of increasing H+ : HClO4 , H2SO4, NH4Br , KCN, KBr, KOH
1. 0 answers
2. asked by Kely
3. 598 views
How do I say "sue me" in spanish?
1. 2 answers
2. asked by nelson
3. 596 views
Gary mailed a box that weighed 2 pounds 8 ounces. The postage cost $15.60. How much was the postage in cents per ounce?
1. 2 answers
2. asked by Chelsea
3. 591 views
I forgot to include the following sentences. Thank you very much1) We went sightseeing in that huge city. We had a guided tour.
1. 1 answer
2. asked by Henry1
3. 584 views
how can solar power work at night
1. 3 answers
2. asked by saira
3. 582 views
The Cyclotron lab is not really designed to handle radioactive beams, but Briggsium is too weird to ignore. The physicists
1. 1 answer
2. asked by Nadya
3. 579 views
I still have a few doubts on some sentences. I really hope you can have a look at them.1) You have to go (?) through the metal
1. 1 answer
2. asked by Henry1
3. 578 views
It is possible to cut the top off a alcohol-in-glass thermometer without any of the alcohol spilling out. However, it will no
1. 4 answers
2. asked by Abbie
3. 577 views
Read the essay and write a paragraph of at least 200 words in which you discuss how effectively the author persuaded you.
1. 2 answers
2. asked by Pooh
3. 571 views
question? Full Reconstruction proved to be a failure. Reconstruction - as defined - was the process of restoring the Confederate
1. 1 answer
2. asked by meshelle
3. 569 views
I just want my answer to be clarified.So the original idea of boundaries was to separate the land among the territories and
1. 2 answers
2. asked by Anonymous
3. 565 views
You can apply enough force to the head of a pushpin to push it into a plaster wall with your thumb. However, it is not a good
1. 1 answer
2. asked by Loui
3. 558 views

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