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Questions Asked on September 13, 2011

A blue ball is thrown upward with an initial speed of 20.6 m/s, from a height of 0.8 meters above the ground. 2.5 seconds after
1. 6 answers
2. asked by a
3. 11,490 views
If the amount of mercury in a polluted lake is 0.40 ug/mL, what is the total mass of mercury in the lake? (The lake has a
1. 1 answer
2. asked by Elle
3. 7,769 views
if a 200-g mass is placed at the 20-cm mark (30 cm from the fulcrum), at what mark should a 500-g mass be placed so that the
1. 1 answer
2. asked by ivory
3. 5,927 views
Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates
1. 1 answer
2. asked by a
3. 5,844 views
The gold foil Rutherford used in his scattering experiment had a thickness of approximately 4×10^−3 mm. If a single gold atom
1. 4 answers
2. asked by Bella
3. 5,007 views
Based on data collected by the National Center for Health Statistics and made available to the public in the Sample Adult
1. 5 answers
2. asked by Tom
3. 4,875 views
An airplane travels 2800 km at a speed of 700 km/h, decreases its speed to 500 km/h for the next 1500 km and travels the last
1. 4 answers
2. asked by nikita
3. 4,168 views
You have a stock solution of 15.8 M NH3 . How many milliliters of this solution should you dilute to make 1350 mL of 0.300 M NH3
1. 2 answers
2. asked by Jennie
3. 3,680 views
It appears to people who are mildly obese are less active than leaner people. One study looked at the average number of minutes
1. 3 answers
2. asked by Darcy
3. 3,579 views
the basis of oxidation number considerations, one of the following oxides would not react with molecular oxygen: NO, N2O, SO2,
1. 2 answers
2. asked by Amber
3. 3,463 views
I you are told that a data set has a mean of 25 and a variance of 0 you can conclude thatA)There is only one observation in the
1. 3 answers
2. asked by Dom
3. 3,039 views
A 100g golf ball moving with a velocity of 20 m/s, collides with an 8 kg steel ball at rest,if the collision is elastic,compute
1. 3 answers
2. asked by neha
3. 2,882 views
a farmer has enough fencing to build 40 feet of fence. He wishes to build a rectangular pen nest to his barn wall forming one
1. 2 answers
2. asked by awes
3. 2,828 views
1.5 m3 of water is mixed with 0.50 m3 of alcohol. Density of water is 1000 kg m–3 and density of alcohol is 800 kg m–3.Whats
1. 4 answers
2. asked by rohan
3. 2,619 views
Consider the series defined by Sn = 3n-1Find the first four terms of the series. How exactly do I do this?
1. 2 answers
2. asked by Anonymous
3. 2,371 views
A boy can row a boat at a constant rate of 5 mi/hr in still water. He rows upstream for 19 minutes and then rows downstream,
1. 1 answer
2. asked by Kaley
3. 2,170 views
m1v1 + m2v2=(m1+m2)v3 find m1If you could please explain it too or show the steps I would appreciate it.
1. 1 answer
2. asked by John
3. 2,050 views
In one elementary school, 200 students are tested on the subject of Math and English. The table below shows the mean and
1. 4 answers
2. asked by Anonymous
3. 2,035 views
Which of the following relations has this characteristic:The relation is a function containing two ordered pairs. Reversing the
1. 1 answer
2. asked by Kara
3. 1,953 views
Hexane has a density of 0.659 g/ml. How many milliliters (mL) would a student need to pour in order to get 49.5 g of hexane?
1. 3 answers
2. asked by Anonymous
3. 1,949 views
what was the truck driver doing w/a load of hogs
1. 12 answers
2. asked by aaa
3. 1,919 views
A boy pulls a wagon with a force of 20N on a handle of .50 meters long. The end he holds is .25 meters higher than the end
1. 3 answers
2. asked by Kim
3. 1,910 views
what is the square root of 20?
1. 3 answers
2. asked by saranghae12
3. 1,790 views
Ms. Poole, my PE teacher, asked the 100 seventh in my school if they could swim. Half the boys and two thirds of the girls said
1. 6 answers
2. asked by D
3. 1,718 views
A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 40.0 min
1. 3 answers
2. asked by gigi
3. 1,710 views
A solution of ammonia and water contains 3.50×10^25 water molecules and 5.00×10^24 ammonia molecules. How many total hydrogen
1. 2 answers
2. asked by Tyler
3. 1,699 views
Find a formula for the amount A of CO2 a car produces in terms of the number n of miles driven and the gas mileage G mi/gal of
1. 1 answer
2. asked by Anonymous
3. 1,618 views
The organizers of of a walkathon get cost estimates from two printing companies to print brochures to advertise the event. The
1. 2 answers
2. asked by David
3. 1,613 views
a ball of mass 0.1kg makes an elastic head on collision with a ball of unknown mass,initially at rest .if the 0.1kg ball
1. 1 answer
2. asked by gallium
3. 1,602 views
A 12kg blcok sits on a table. A 10 kg block sits on top of the 12kg block. What is the force the table exerts on the 12kg block.
1. 2 answers
2. asked by Diane
3. 1,541 views
calculate the work done in lifting a 300N weight to a height of 10m with an acceleration 0.5 m/s square.
1. 3 answers
2. asked by armando
3. 1,511 views
By default, your numerical entry is scored as correct if it is within 1% of the correct answer. A rule of thumb is always to
1. 0 answers
2. asked by ashley
3. 1,477 views
A 100g golf ball moving with a velocity of 20 m/s, collides with an 8 kg steel ball at rest,if the collision is elastic,compute
1. 2 answers
2. asked by neha
3. 1,466 views
a 600 kg toy car moving at 3 m/s collides and hooks up with a 900 kg toy car at restand they move off together. What is their
1. 2 answers
2. asked by star
3. 1,461 views
As payment for his daughters yard work, a father agrees to give his daughter an allowance of $3.50 in the first week of the year
1. 4 answers
2. asked by Anonymous
3. 1,419 views
One cup of clam chowder contains 9g of protein, 12 g of fat, and 16 g of carbohydrates. How many kilocalories are in the clam
1. 2 answers
2. asked by kelie
3. 1,413 views
A family is having a pool built in their backyard. If their yard is rectangular and measures 7x by 6x and the pool is circular
1. 6 answers
2. asked by Bell
3. 1,406 views
We had to read the opening paragraph of "The Cask of Amontillado" and analyze it with the following questions. I really need
1. 4 answers
2. asked by Sammy
3. 1,358 views
translate to spanishour father's office -la oficina de nuetro padre 2-translate the possesine adjective in parentheses into
1. 1 answer
2. asked by mike
3. 1,299 views
How much methanol, CH3OH (d = 0.792g/mL), in milliliters, must be dissolved in water to produce 2.15L of 0.470 M CH3OH?
1. 1 answer
2. asked by Ryan
3. 1,286 views
In December,the average total rainfall in all of the deserts together is 0.89 mm. Explain how to use the figures from the table
1. 4 answers
2. asked by Ashley
3. 1,259 views
Few question about astronomy:1.how many centimetres is equivalent to a light-nanosecond 2. How long is an astronomical unit (AU)
1. 2 answers
2. asked by KD
3. 1,226 views
How many molecules of NH3 could be generated from 64 molecules of N2 and 210 molecules of H2? How many molecules of N2 and H2
1. 0 answers
2. asked by Kelsey
3. 1,217 views
a moving sidewalk in an airport terminal building moves 1.00 m/s and is 150.0 m long.If man steps on at one end and walks 2.0
1. 2 answers
2. asked by has
3. 1,207 views
what is 0.9 divided by 1000
1. 4 answers
2. asked by TAYLOR
3. 1,202 views
Mei's salary starts at $16,000 per year with annual raises of $1500. Janet's starting salary is $19,300 with annual raises of
1. 0 answers
2. asked by Byran
3. 1,149 views
A Dialog Between Dead Menby Jorge Luis Borges I don't really get what happens in this story. Can someone explain more clearly or
1. 0 answers
2. asked by Skylar
3. 1,139 views
I can’t find appropriate synonym. In particular, I find it difficult to rephrase the following verbs: knock over, smash
1. 1 answer
2. asked by Henry2
3. 1,133 views
Write each compound inequality as an absolute value inequality.1.3 < h < 1.5 Could someone give me the step too? Thanks
1. 2 answers
2. asked by Shadow
3. 1,130 views
How did Crispin get into the palace?Name of the Book: Crispin The Cross of Lead
1. 1 answer
2. asked by Michael
3. 1,095 views
In 1968, the estimated population of the world was 3,559,028,982 people. When this number is written in expanded form using
1. 1 answer
2. asked by John
3. 1,089 views
I have two boxes with balls; box #1 and box #2. Box #1 has 3 red balls and 2 blue balls.Box #2 has 7 red balls and 3 blue balls.
1. 1 answer
2. asked by Paula Arcila
3. 1,067 views
a piece of nickel wire has a diameter of 0.568. if the nickel has a density of 8.90g/cc, how long( in meters) should you cut a
1. 1 answer
2. asked by Smarth
3. 1,065 views
A skateboarder shoots off a ramp with a velocity of 6.8 m/s, directed at an angle of 54° above the horizontal. The end of the
1. 1 answer
2. asked by Kyle
3. 1,029 views
Fresh Sub hires three workers during the peak hours. When customers arrive, one worker is dedicated to order taking and
1. 1 answer
2. asked by Nick
3. 1,018 views
Find the density in g/cm3 of a 120 cm3 piece of metal having a mass of 2 kg.
1. 1 answer
2. asked by Me
3. 984 views
An electron, starting from rest and movingwith a constant acceleration, travels 4.7 cm in 5.2 ms. What is the magnitude of this
1. 0 answers
2. asked by naia
3. 983 views
How many moles of H2(g) will be formed in the reaction between 0.99 mol CaH2}(s) and 1.32 mol H2O(l)?
1. 0 answers
2. asked by Ryan
3. 982 views
Consider the following unbalanced reaction.P4(s) + F2(g)---> PF3(g) How many grams of F2 are needed to produce 114 g of PF3 if
1. 2 answers
2. asked by Jeff
3. 979 views
Determine whether the following statement makes sense or does not make sense, and explain your reasoning (modified from
1. 5 answers
2. asked by Christian
3. 967 views
A roller coaster travels 17.6 m at an angle of38.0 ◦ above the horizontal. How far does it move horizontally? Answer in units
1. 1 answer
2. asked by Anonymous
3. 963 views
A rocket is launched from rest. After 8.0 min, it is 160 Km above the Earth’s surface and is moving at a speed of 7.6 Km/s.
1. 1 answer
2. asked by John
3. 953 views
What is the capital of the country through which the 40 degrees N line of latitude and 20 degrees E line of longitude pass? My
1. 2 answers
2. asked by Reed
3. 948 views
Choose the sentence in which the underlined word is grammatically correct.A. Africa no está tan grande como Eurasia. B. Era
1. 3 answers
2. asked by Anonymous
3. 940 views
While John is traveling along an interstatehighway, he notices a 170 mi marker as he passes through town. Later John passes a
1. 3 answers
2. asked by naia
3. 933 views
Have a crossword puzzleAn element found in nature. second letter a last letter l seven letters total
1. 0 answers
2. asked by tj
3. 929 views
A farmer has 60m of fencing to make a rectangular pen for his goats.Derive an expression in simplest form, for the length of the
1. 0 answers
2. asked by Anonymous
3. 911 views
translate to spanishour father's office -la oficina de nuetro padre 2-translate the possesine adjective in parentheses into
1. 1 answer
2. asked by mike
3. 908 views
Which of the following is an example of projectile motion?a jet lifting off a runway a thrown baseball an aluminum can dropped
1. 0 answers
2. asked by Anonymous
3. 890 views
Fats are excellent energy storage molecules becausea) they have a relatively high ratio of energy storing C—H bonds. b)they
1. 0 answers
2. asked by Katy
3. 880 views
A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 40.0 min
1. 1 answer
2. asked by Anonymous
3. 873 views
Two sides of a triangles are equal in length. the length of the third side is three meters less than the sum of the lengths of
1. 1 answer
2. asked by Joanna
3. 869 views
If the slope of a line is 5/3 and a point on the line is (57,12) using the given point and the slope find the coordinates of the
1. 1 answer
2. asked by sue
3. 853 views
The goal of this problem is to solve the equation by completing the square.x^2-9x+14=0
1. 1 answer
2. asked by john
3. 852 views
A. A small plane departs from point A heading for an airport at point B 480 km due north. The airspeed of the plane is 200 km/h
1. 0 answers
2. asked by John
3. 838 views
During lab, you are provided with a stock antibody solution (Ab) that has a concentration of 400 μg/μl. For lab, it is
1. 0 answers
2. asked by gabrielle
3. 834 views
The difference of two integers is 9. Five times the smaller is 7 more than three times the larger. Find the numbers.
1. 1 answer
2. asked by Byran
3. 825 views
A UPS employee, Davis, packs and labels three types of packages: basic packages, business packages, and oversized packages.
1. 1 answer
2. asked by Julie
3. 822 views
A cross country team race is about to begin and team Delta decides to use their one-dimensional kinematics knowledge that they
1. 2 answers
2. asked by victor
3. 819 views
A roofing tile falls from rest off the roof of a building. An observer from across the street notices that it takes 0.35 s for
1. 1 answer
2. asked by Tatyana
3. 814 views
A salesperson finds that, in the long run, two out of five sales calls are successful. Twelve calls are to be made. Let X = the
1. 1 answer
2. asked by Jane
3. 811 views
Suppose that drilling into what was once a lake bottom produces a piece ofwood which, according to its mass, would have
1. 1 answer
2. asked by Anonymous
3. 806 views
Please help.Assume that a cell culture has a density of 10^8 cells/mL. You transfer 20 microliters of this culture onto the
1. 1 answer
2. asked by Celine
3. 801 views
Many critics say the human cost of the war in iraq and afghanistan was borne by just a few.should there be a national service
1. 2 answers
2. asked by katherine
3. 801 views
A small rock is thrown vertically upward with a speed of 13.0 from the edge of the roof of a 31.0 tall building. The rock
1. 1 answer
2. asked by josh
3. 798 views
I need help with this question.A car travels along a straight and level road at a constant speed of 6.2 m/s. Calculate how long
1. 3 answers
2. asked by samira
3. 789 views
Add 12 and 2 tenths and 32 hundreths I need to write out the problem and solve
1. 1 answer
2. asked by marleen
3. 779 views
In an election between two candidates, 530 votes were cast. If the winner received received 150 more votes than the loser, how
1. 2 answers
2. asked by Christina
3. 760 views
A driver traveling at 25 mph in a school zone can brake to an emergency stop in 8 ft. Under similar conditions, what would be
1. 1 answer
2. asked by Jose
3. 756 views
An automobile with an initial speed of 4.82 m/s accelerates uniformly at the rate of 2.2 m/s2. Find the displacement of the car
1. 1 answer
2. asked by Destiny
3. 756 views
Perform the indicated operation(s) and express the result in standard form. Leave answers in terms of square roots (do not use
1. 1 answer
2. asked by john
3. 750 views
find the work done ,if a weight of 25kg is lifted through a vertical height of 2m from the ground and it is raised to same place
1. 1 answer
2. asked by armando
3. 743 views
Trapezoid TRAP with TR AP, Re, PA and P, E and A collinear
1. 1 answer
2. asked by Seme
3. 737 views
Locations of hot spots remain fixed for a long time. Asplates move across such hot spots, they form chains of volcanoes. The
1. 1 answer
2. asked by Don
3. 733 views
a sheet of metal is 97.4 mm wide and 59.4 mm long. if it weighs 9.788g and the density of the metal is 7.23g/cm^3, what is the
1. 2 answers
2. asked by Smarth
3. 732 views
Cigarette Use A study by the Partnership for a Drug-Free America indicated that, in 1998, 42% of teens in grades 7 through 12
1. 1 answer
2. asked by Michaela
3. 728 views
A child organizes animal blocks in rows on the ground. There are 64 animal blocks in the 5th row & 92 of those blocks in the 9th
1. 0 answers
2. asked by Anonymous
3. 727 views
Thank you very much. Could you please check these other sentences? (word choice, reporting verbs)1) European law says that
1. 1 answer
2. asked by Henry2
3. 719 views
Which of the following relations has this characteristic:The relation is a function containing two ordered pairs. Reversing the
1. 0 answers
2. asked by Kristen
3. 717 views
Please can you help me to solve and get the solution for these problems.how to get the solution please help me for my homework.
1. 2 answers
2. asked by jessie
3. 715 views

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