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2011
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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
4 answers
asked by
Phillip
6,544 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 answer
asked by
Elizabeth
4,914 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 answer
asked by
aly
3,697 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.
2 answers
asked by
aly
3,383 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.
3 answers
asked by
Mark
2,689 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
2 answers
asked by
aly
2,516 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 answer
asked by
Ginny
2,429 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
2 answers
asked by
Loui
2,260 views
tennyson's "the lady of shalott has a rhythm and a rhyme pattern that make it sound like
a. a sonnet b. an elegy c. a nursery
4 answers
asked by
S.S.
2,188 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 answer
asked by
richard
2,182 views
Genetic Inheritance
Exercise 1: F1 Hybrid Cross Results: Punnett Square for F1 Cross ¡V Expected Genetic Outcomes F1 Parent,
2 answers
asked by
Stumped
2,175 views
a sofa sells for $840. the sale price is $714., find the percent of decrease of the sale price from the regular price
2 answers
asked by
marlo
2,036 views
What mass of the following solution contains 0.100 mol of solute? 0.334 molality NH4NO3
1 answer
asked by
Anonymous
1,874 views
Two identical wooden barrels are fitted with long pipes extending out their tops. The pipe on the first barrell is 1 foot in
2 answers
asked by
Loui
1,646 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
3 answers
asked by
Jacob
1,574 views
The physics of orbital radius and orbital period of a planet.
If a small planet were discovered whose orbital period was twice
1 answer
asked by
aly
1,563 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 answer
asked by
Jessica
1,504 views
1.) determine two pairs of polar coordinates for the point (-4sqrt3, 4sqrt3)with 0degrees less than or equal to theta less than
4 answers
asked by
YOSHI
1,458 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 answer
asked by
Loui
1,420 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 answer
asked by
allison
1,410 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
4 answers
asked by
Abbie
1,372 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
0 answers
asked by
saud
1,257 views
Calculate delta G and Kc.
2Al(s) + 3I2(s) to 2Al3+(aq) + 6I-(aq)
0 answers
asked by
Sonali
1,188 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
2 answers
asked by
Jeffrey
1,184 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
2 answers
asked by
Jude
1,166 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 answer
asked by
ryee
1,146 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 answer
asked by
susi
1,130 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
3 answers
asked by
mickeymouse
1,118 views
i forgot how to convert a decimals to a fractions, can u help me solve this:
0.14 percent: 14% fraction: ?
1 answer
asked by
sara
1,098 views
In a survery, students were asked whether they play basketball or tennis. Of 34 students, 24 play basketball and 13 students
1 answer
asked by
Trace
1,069 views
Thank you very much for your information.Here are some sentences I'd like you to check
1) You've to enter the airport. Don't use
1 answer
asked by
Henry1
1,048 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 answer
asked by
Tatiana
1,043 views
Evaluate the polynomial for x = -2.
Simplify your answer 3x² - 2x +2
1 answer
asked by
Mary
1,025 views
Please help to convert the following(Show work please!!!
1.62500 Grams to kilograms 62500 Grams to Pounds 62500 Grams to Ounces
6 answers
asked by
Mike...
1,017 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
2 answers
asked by
PLewis
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 answer
asked by
Robyn
1,014 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 answer
asked by
Mark
1,005 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 answer
asked by
Juan
990 views
Can someone give me some feedback on this compare and contrast essay that I have completed.
Into day’s society, online social
3 answers
asked by
Cherrel
978 views
With density g/cm3
copper 8.93 silver 10.5 mercury 13.6 will a block of copper or silver float higher in mercury in liquid form?
1 answer
asked by
Loui
973 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 answer
asked by
Confused
972 views
Arrange the following 0.10 M solutions in order of increasing H+ : HClO4 , H2SO4, NH4Br , KCN, KBr, KOH
2 answers
asked by
stephen
948 views
Given that 12g of carbon combines completely with 16g of oxygen to form carbon monoxide, how many grams of carbon monoxide can
3 answers
asked by
Abbie
939 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 answer
asked by
Leigh
925 views
explain how mitosis helps an organism to grow.
2 answers
asked by
princess
878 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 answer
asked by
kia
862 views
Pharmacists who are trained in the United States must earn a Pharm.D. degree from an accredited college or school of pharmacy.
10 answers
asked by
Anonymous
832 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
0 answers
asked by
sonney32
826 views
calculate both the pearson and spearman correlation coefficient for the data below. state whether ther are significant? writ a
1 answer
asked by
ryee
818 views
What does the (n.d.) stand for in the following sample citation:
GovTrack. (n.d.). Brian Higgins U.S. Representative, New
1 answer
asked by
Anonymous
807 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
2 answers
asked by
Lisa
801 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 answer
asked by
Loui
801 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.
3 answers
asked by
Shinal
796 views
Where do we put the "and" when writing a number, 1234.567 for example, in words?
Some references say, "one thousand two hundred
3 answers
asked by
Daniel
792 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 answer
asked by
Trista Nigh
785 views
1. Hay que ______ agua, ¿verdad?
a. conserva b. conservar c. conservé d. conservo A? 2. Quiero dormir. Por favor, ____ la luz.
2 answers
asked by
mysterychicken
776 views
Solve. 25x^4-15x^2+2=0
1 answer
asked by
Mary
767 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 answer
asked by
Russ
758 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 answer
asked by
Tisha
748 views
A professor knows that in her class 37% of the students have passed an Algebra course, 29% have passed an English course, and
0 answers
asked by
Confused
734 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
3 answers
asked by
math
731 views
Oxygen molecules contain two oxygen atoms, and carbon dioxide molecules contain one atom of carbon and two atoms of oxygen. How
1 answer
asked by
Loui
724 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
2 answers
asked by
Julie
720 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
4 answers
asked by
Tatiana
716 views
For the following equation, state the value of the discriminant and then describe the nature of the solutions.
-15x² + 2x + 13 =
1 answer
asked by
Anonymous
713 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 answer
asked by
Jude
709 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,
2 answers
asked by
maria
709 views
What is the mass of a lead sinker witha volume of 3cm3? please show work
Thank you
1 answer
asked by
Loui
705 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 answer
asked by
Anonymous
699 views
A wife has applied farsakh in the syariah court. Then later she moved out of the
home. The husband, a practicing Islamic worker
2 answers
asked by
syah
698 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
5 answers
asked by
Paul
695 views
Use the quadratic formula to solve the equation.
x² - x = -2 Type an exact answer, using radicals as needed. Express complex
2 answers
asked by
Mary
694 views
14. When one buys insurance, you need to be clear about your needs.
__ Pronoun shift in number __ Pronoun shift in person __
2 answers
asked by
tony
686 views
In a survery, students were asked whether they play basketball or tennis. Of 34 students, 24 play basketball and 13 students
1 answer
asked by
Trace
664 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.
3 answers
asked by
jessie
661 views
Total Rainfall = rainfall mm x area covered
In order to ensure that our values are correct we will need to convert the area
1 answer
asked by
Tatiana
658 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 answer
asked by
Evelyn
641 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
3 answers
asked by
Kim
637 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 answer
asked by
S.S.
626 views
While vacationing,john has dinner at a restaurant in Japan and his tab
comes to 3,428 yen. The exchange rate at the time of his
5 answers
asked by
mike...
626 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
0 answers
asked by
sam
625 views
The total pressure in a flask containing air and ethanol at 25.7C is 878 mm Hg. The pressure of
the air in the flask at 25.7C is
2 answers
asked by
Deanna
624 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
2 answers
asked by
Mary
622 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
0 answers
asked by
Dan
619 views
Viruses are infectious agents that often cause diseases in plants. Different viruses have different potency levels, and this
0 answers
asked by
Stephanie
618 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 answer
asked by
Henry1
612 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.
2 answers
asked by
Rachel
606 views
Explain hoW Percy Bysshe Shelley relates the skylark's song to his own efforts to write poetry in "To a Skylark."
1 answer
asked by
S.S.
605 views
Arrange the following 0.10 M solutions in order of increasing H+ : HClO4 , H2SO4, NH4Br , KCN, KBr, KOH
0 answers
asked by
Kely
601 views
How do I say "sue me" in spanish?
2 answers
asked by
nelson
601 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?
2 answers
asked by
Chelsea
596 views
how can solar power work at night
3 answers
asked by
saira
588 views
I forgot to include the following sentences. Thank you very much
1) We went sightseeing in that huge city. We had a guided tour.
1 answer
asked by
Henry1
588 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 answer
asked by
Henry1
584 views
The Cyclotron lab is not really designed to handle radioactive beams, but Briggsium is too weird to ignore. The physicists
1 answer
asked by
Nadya
581 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
4 answers
asked by
Abbie
580 views
Read the essay and write a paragraph of at least 200 words in which you discuss how effectively the author persuaded you.
2 answers
asked by
Pooh
574 views
question? Full Reconstruction proved to be a failure. Reconstruction - as defined - was the process of restoring the Confederate
1 answer
asked by
meshelle
572 views
I just want my answer to be clarified.
So the original idea of boundaries was to separate the land among the territories and
2 answers
asked by
Anonymous
567 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 answer
asked by
Loui
560 views
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