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Questions Asked on October 2, 2011

You are trying to ﬁnd out how high you haveto pitch a water balloon in order for it to burst when it hits the ground. You
1. 1 answer
2. asked by jj
3. 7,753 views
Mg3N2 +6H2O- 3Mg(OH)2 + 2NH3-- How many grams of H2O are needed to produce 150g of Mg(OH)2?I thought I had this but.....the
1. 1 answer
2. asked by Connie
3. 7,363 views
On a hot summer day in the state of Washington while kayaking, I saw several swimmers jump from a railroad bridge into the
1. 4 answers
2. asked by Sam
3. 6,762 views
As you hurry to catch your flight at the airport, you encounter a moving walkway that is 85m long and has a speed of 2.2 m/s
1. 2 answers
2. asked by Erin
3. 6,238 views
a trench mortar fires a shell at an angle of 30 degrees with the horizontal and with a speed of 500 m/s. find its range and the
1. 2 answers
2. asked by Gillianne
3. 5,454 views
the height in feet of a flare t seconds after it is shot is modeled by h(t)= -16t2+92t+3.5 find its average speed from 1 to 3
1. 3 answers
2. asked by Anonymous
3. 5,368 views
The tallest volcano in the solar system is the 18 km tall Martian volcano, Olympus Mons. An astronaut drops a ball off the rim
1. 1 answer
2. asked by Anonymous
3. 5,262 views
How many moles of chloroethylene contain 5.47X10^26 molecules
1. 3 answers
2. asked by mimi
3. 4,980 views
A 800 N crate is being pulled across a level floor by a force F of 320 N at an angle of 29° above the horizontal. The
1. 1 answer
2. asked by Bridge
3. 4,809 views
a) What is the area of the tri-angle determined by the lines y= − 1/ 2x + 5,y =6x and they-axis?(b) If b > 0 and m < 0, then
1. 2 answers
2. asked by Ron
3. 4,294 views
Sally and marta had the same number of postcards. After sally sold 18 of her postcards, marta had 4 times as many postcards as
1. 4 answers
2. asked by lori
3. 3,987 views
Judy, by chance, spots a potted plant fallingoutside the window at 2.04 m/s . Further down the same building, Judy’s boyfriend
1. 1 answer
2. asked by jj
3. 3,575 views
what mass of water can be obtained from 4.0g of H2 and 16g of O2?
1. 4 answers
2. asked by Genine.
3. 3,495 views
Bill and Amy want to ride their bikes from their neighborhood to school which is 14.4 kilometers away. It takes Amy 40minutes to
1. 4 answers
2. asked by Marias
3. 2,820 views
The coefficient of kinetic friction for a 22 kg bobsled on a track is 0.15. What force is required to push it down a 6.0°
1. 2 answers
2. asked by Phil
3. 2,752 views
samples of size n=900 are randomly selected from the population of numbers (0 through 9) produced by a random-number generator,
1. 2 answers
2. asked by Tonnickie
3. 2,713 views
given the circle having the equation x^2+y^2=9, find the shortest distance from the point (4,5). find the longest distance from
1. 1 answer
2. asked by fate
3. 2,698 views
What shell contains a total of 16 orbitals?A. n = 1 B. n = 2 C. n = 3 D. n = 4 E. n = 5
1. 2 answers
2. asked by Ninaya
3. 2,635 views
A large spring is placed at the bottom of an elevator shaft to minimize the impact in case the elevator cable breaks. A loaded
1. 4 answers
2. asked by Nabby
3. 2,400 views
The average distance between the Earth and the Sun is called the astronomical unit(AU), which is about 150 million km (1.5 x 108
1. 3 answers
2. asked by Rebecca
3. 2,387 views
Suppose that you travel to a planet that has 4 times the Earth's mass and 4 times theEarth's radius. Calculate how much more or
1. 2 answers
2. asked by Rebecca
3. 2,367 views
Given: The initial position of the block is the origin; i.e., x = 0 at t = 0 . Consider down the track to be the positive
1. 4 answers
2. asked by Cassandra
3. 2,365 views
There are two blocks connected by a string and tied to a wall on an incline. The mass of the lower block is 1.0kg; the mass of
1. 2 answers
2. asked by Erin
3. 2,359 views
What must be the molarity of an aqueous solution of trimethylamine, (CH3)3 N, if it has a PH=11.20?
1. 2 answers
2. asked by Allan
3. 2,138 views
Two stones are thrown vertically up at the same time. The first stone is thrown with an initial velocity of 12.5 m/s from a
1. 2 answers
2. asked by Millie
3. 2,047 views
when describing a deserted place how can you use onomatopoeia to biuld up the tension and make it fun for the reader? please
1. 8 answers
2. asked by Anonymous
3. 1,963 views
Suppose that f(2)=3 and f′(2)=5. Let g(x)=x^3f(x). Evaluate g′(2). Your final answer should be a single number.
1. 2 answers
2. asked by Allison
3. 1,934 views
Show that Kepler's third law is consistent (approximately) for the orbits of the Marsand Saturn. Show all your calculations and
1. 1 answer
2. asked by Rebecca
3. 1,844 views
A mixture contains only CuCl2 and FeCl3. A 0.7391 g sample of the mixture is completely dissolved in water and treated with
1. 0 answers
2. asked by Jessica
3. 1,774 views
Imperial Systems has $1 million available for capital investments during the current year.A list of possible investment
1. 2 answers
2. asked by matie
3. 1,740 views
A student estimated the volume of liquid in a beaker as 200 mL. When she poured the liquid into a graduated cylinder, she
1. 2 answers
2. asked by paul
3. 1,637 views
An outfielder throws a 0.150-kg baseball at a speed of 50.0 m/s and an initial angle of 30.0°. What is the kinetic energy of
1. 1 answer
2. asked by Anonymous
3. 1,633 views
How many grams of solute are needed to prepare each of the following solutions?A. 1.000 L of 0.180 M NaCl B. 250.0 mL of 0.150 M
1. 1 answer
2. asked by Bekah
3. 1,536 views
The graph give the acceleration a versus time t for a particle moving along an x axis. The a axis scale set by a=12 m/s^2. At t
1. 1 answer
2. asked by Belinda
3. 1,512 views
Steel expands 1 part in 100 000 for each 1°C increase in temperature. If the 1.5km main span of steel suspension bridge had no
1. 1 answer
2. asked by Ali
3. 1,486 views
Find the constant of proportionality for the following situation: "y is jointly proportional to x and z and inversely
1. 1 answer
2. asked by Jake
3. 1,395 views
a fireman D=50 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of 30 degrees
1. 2 answers
2. asked by student
3. 1,386 views
If the force of friction acting on a sliding crate is 79 N, how much force must be applied to maintain a constant velocity? 79N
1. 0 answers
2. asked by Audrey
3. 1,369 views
Consider a hypothetical population of dogs in which there are four possible weights, all of which are equally likely: 42, 48,
1. 2 answers
2. asked by Sam
3. 1,359 views
How many revolutions per minute would a 18 m-diameter Ferris wheel need to make for the passengers to feel "weightless" at the
1. 1 answer
2. asked by Luke
3. 1,346 views
During a baseball game, a batter hits a pop-up to a fielder 83 m away.The acceleration of gravity is 9.8 m/s^2. If the ball
1. 1 answer
2. asked by Allen
3. 1,329 views
Three volatile compounds X,Y, and Z each contain elements Q. The precent by weight of element Q in each compound was determined.
1. 0 answers
2. asked by Lucy
3. 1,319 views
Susan has some $2-coins and $5-coins. If there are 18 coins and the total amount of these coins is not less than $75, find the
1. 1 answer
2. asked by Nicole
3. 1,304 views
Algebra Solving Equations by multiplying OR dividing. GRADE 9 LEVELKurt and four friends are eating in the food court at South
1. 2 answers
2. asked by Jab
3. 1,296 views
The area of a rectangle is 243cm^2. The length is three times greater than the width. What are the dimensions of the rectangle?
1. 1 answer
2. asked by Leigh
3. 1,291 views
Dear Mrs. Gebbia,Hi! You may not know me but my name is Laruen Jean-Baptiste. I’m currently in the 7th grade & it will be an
1. 7 answers
2. asked by Laruen
3. 1,286 views
A rubber ball dropped from a height of exactly 5 ft bounces (hits the floor) several times, losing 10% of its kinetic energy
1. 0 answers
2. asked by Kyle
3. 1,285 views
I'm writing an essay involving analysis of a short story. I need to put in-text citations after quotes, etc. The short story was
1. 1 answer
2. asked by Jeremy
3. 1,272 views
A 19.2-kg box rests on a frictionless ramp with a 16.1° slope. The mover pulls on a rope attached to the box to pull it up the
1. 1 answer
2. asked by Patrick
3. 1,266 views
An object moving with uniform acceleration has a velocity of 11.0 cm/s in the positive x-direction when its x-coordinate is 2.97
1. 0 answers
2. asked by Johna
3. 1,245 views
Calculate the energy in the form of heat, in kJ, required to convert 225 grams of liquid water at 21.0 °C to steam at 115 °C.
1. 1 answer
2. asked by Ninaya
3. 1,241 views
The holiday dinner is at the Milton’s housethis year. Mrs. Milton will do most of the cooking. 5. Cooking time for a turkey is
1. 4 answers
2. asked by Jab
3. 1,238 views
The binding energy of 20 10 Ne is 161 MeV. Find its atomic mass.
1. 0 answers
2. asked by Sheryl
3. 1,238 views
The framers did not create a perfect form of federalism. How has U.S. society been harmed by the federal government devised by
1. 2 answers
2. asked by AlyssaJKC
3. 1,229 views
A motorcycle is traveling up one side of a hill and down the other side. The crest of the hill is a circular arc with a radius
1. 0 answers
2. asked by Gloria
3. 1,226 views
you ate 1/4 of a pizza. your sister ate 1/6 of the pizza. how much of the pizza is left?
1. 2 answers
2. asked by antonio
3. 1,225 views
An aqueous solution with a density of 0.998 g/ml at 20 degrees Celsius is prepared by dissolving 12.8 mL of CH3CH2CH2OH (p=0.803
1. 0 answers
2. asked by Jessica
3. 1,214 views
How is a mid-latitude cyclone formed:thunderstorms on the west side of an occluded front, frontal systems in association with
1. 0 answers
2. asked by Rachel
3. 1,201 views
An amusement park ride consists of a large vertical cylinder that spins aboutFigure P6.61 its axis fast enough such that any
1. 0 answers
2. asked by Anonymous
3. 1,194 views
A balanced equation for copper oxide + ethanoic acid.
1. 0 answers
2. asked by Eloise
3. 1,187 views
The state of Texas has anarea of approximately 266,806 squaremiles. Its area is approximately 220times the area of the state of
1. 2 answers
2. asked by Jab
3. 1,172 views
Aluminum metal and Iron(III) oxide react to give aluminum and iron metal. What is the maximum amount of Iron that can be
1. 1 answer
2. asked by Jessica
3. 1,161 views
Aristotle's VirtuesI'm just confused if in generally the vice of deficiency means the "definicency of the mean" OR the
1. 1 answer
2. asked by Amy
3. 1,158 views
Could you check these few sentences n travelling. Thank you1) Go to the check-in desk. Put your luggage on the conveyor belt for
1. 1 answer
2. asked by Henry2
3. 1,156 views
a jet airliner moving initially at 3..00X10^2 mi/h due east enters a region where the wind is blowing 1.0 x 10^2 mi/h in a
1. 2 answers
2. asked by joshua
3. 1,156 views
A ball dropped from rest on to horizontal ground 20m between rebounds with 3/4 of the velocity with which it hits the ground
1. 1 answer
2. asked by Anonymous
3. 1,148 views
Which expression is defined for all real numbers?a) x + 3/x^2 b) 5/(x + 2)^2 c)4/(x − 2)^2 d)7/x^2 + 3
1. 1 answer
2. asked by jaz
3. 1,144 views
Eve and Jason have an exercise routine that they do together three days a week. Together, they can lift 225 pounds.a) If Eve can
1. 5 answers
2. asked by Jab
3. 1,107 views
A 23 L flask at 254 K and 19 Torr contains nitrogen. What mass of nitrogen is present? Answer in units of g.
1. 3 answers
2. asked by Laurie
3. 1,104 views
How doesLimit as delta x approaches 0 = 4x + 2deltax +1 simplify to 4x +1? I'm supposed to find the derivative using the
1. 1 answer
2. asked by Priya
3. 1,097 views
Find all solutions to the equation2cos(2x) = x + 1, correct to 4 decimal places.
1. 1 answer
2. asked by sam
3. 1,089 views
A 9.10-kg hanging object is connected by a light, inextensible cord over a light, frictionless pulley to a 5.00-kg block that is
1. 0 answers
2. asked by Anonymous
3. 1,071 views
For anti-ballistic missile system, the time offlight tf is determined by the initial speed v0 of the missile and the range R.
1. 1 answer
2. asked by Maxx
3. 1,069 views
Thank you very much. Here are the very last sentences on the same theme. Thank you!!!1) Alan Campbell was an extremely
1. 1 answer
2. asked by Henry2
3. 1,066 views
Over the last century, has music changed from being about artistic expression to being more about money and business? Is it even
1. 0 answers
2. asked by Sly
3. 1,064 views
Point B is midpoint of Lince AC.Given: AB=2x-1 BC=4x+2 AC=25 Find: AB and BC
1. 1 answer
2. asked by Bee
3. 1,052 views
When will a thunderstorm tend to be more severe and have a longer duration in reference to the axis of a storm.
1. 0 answers
2. asked by Rachel
3. 1,050 views
What is the defining characteristic of the troposphere?(Straight forward answers please & thank you)
1. 2 answers
2. asked by Rachel
3. 1,044 views
An object moving with uniform acceleration has a velocity of 11.0 cm/s in the positive x-direction when its x-coordinate is 2.97
1. 1 answer
2. asked by Johna
3. 1,030 views
So I read the book Cannery Row by John Steinbeck. I have to pick three major events/ideas found in the book.This is what I
1. 2 answers
2. asked by Anonymous
3. 1,028 views
According to the National Transportation Safety Board, 10% of all major automobile crashes result in serious injury to at least
1. 0 answers
2. asked by vee
3. 1,016 views
Which process could lead directly to the formation of pumice rock?
1. 1 answer
2. asked by Grace
3. 1,011 views
A ball rolls off a table moving 3.6m/s in the horizontal direction. The table is 1.2 meters high. Find the amount of time needed
1. 1 answer
2. asked by Laura
3. 994 views
2(a-4)+15=13Please show step by step
1. 2 answers
2. asked by jane
3. 989 views
An object is thrown straight down off of a cliff with a velocity of 18m/s.a) What is the object's velocity after 15s? b) If the
1. 1 answer
2. asked by Mel
3. 986 views
When a result is significant, explain why it is wrong to say the result “proves” the research hypothesis.PLEASE HELP
1. 0 answers
2. asked by Mark
3. 983 views
what is some background information on homosexuals?
1. 8 answers
2. asked by rebecca
3. 972 views
how to predict proteins function base on protein 3D structure?
1. 0 answers
2. asked by Xue Lin
3. 962 views
an object slides off a roof 10 m above the ground with an initial horizontal speed of 5 m per second. the time between the
1. 0 answers
2. asked by Serena
3. 953 views
The distance to the moon is 250,000 miles. Calculate the distance in kilometers.250,000mi x 1.61km/1mi =402,500 km But the
1. 2 answers
2. asked by Anonymous
3. 951 views
what are the number of turning points for this equation? y=4x^2and can you plz explain how u find them thanks :)
1. 2 answers
2. asked by kerry
3. 944 views
Factor1. 8a^2-2ab-21b^2 2. 6m^2-90m+324 3.5x(2-x)+4x(2x-5)-(3x-4) 4. 9(y-1)^2-25 5. 3x^2-27(2-x)^2
1. 1 answer
2. asked by Melissa
3. 939 views
a curve i s given the equation y=3x^2+3+1/x^2,where x>0. at point A,B, and C on the curve,x=1,2 and 3. find the gradients of A,B
1. 0 answers
2. asked by sakina
3. 932 views
Calculate the enthalpy change, ΔrH, for the following reaction,4 NH3 (g) + 5 O2(g) → 4 NO (g) + 6 H2O (g) given the
1. 0 answers
2. asked by Hannah
3. 924 views
i tried these quesions so manytimes , but i just cant get he rigt answer !1.) 4(2-a)^2-81 2.) -(x-y)^3 3.)3x^2-27(2-x)^2 4.)
1. 0 answers
2. asked by Melissa
3. 912 views
How much heat is emitted when 4.55 of water condenses at 25 ? The heat of vaporization of water at 25 is 44.0
1. 1 answer
2. asked by Anonymous
3. 907 views
You have recently been employed by a large retail chain that sells sporting goods. One of your tasks is to help prepare
1. 1 answer
2. asked by Nirav
3. 907 views
When 0.083 moles of lead(II) nitrate are dissolved in enough water to make 617 mililitersof solution, what is the molar
1. 1 answer
2. asked by Rara
3. 906 views
A thunderstorm tends to be more severe and have a longer duration if the axis of the storm is: tilted, perpendicular to the
1. 0 answers
2. asked by Rachel
3. 906 views
sig figs for..1.399 x by 10-3 0.0763 m2 212.080 g 673.133 K 6.69808e+06 cm
1. 0 answers
2. asked by becca
3. 903 views

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