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Questions Asked on September 26, 2011

An object with mass m1=5.00 kg rests on a frictionless horizontal table and is connected to a cable that passes over a pulley
1. 4 answers
2. asked by Dee
3. 15,664 views
What is the oxidation number of sulfur (s) in NaHSO3?I know that Na is 1 but I do not know what else to do. Please explain,
1. 4 answers
2. asked by Hannah
3. 8,809 views
Iron is found in Earths crust as several different iron compounds. Calculate the mass (in kg) of each compound that contains 1.0
1. 7 answers
2. asked by Monique
3. 8,735 views
Let P= (V^2)R / (R+r)^2Calculate dP/dr, assuming that r is variable and R is constant.
1. 3 answers
2. asked by rachel
3. 4,419 views
The probability of rolling a die and getting an even number is 1/2. If you roll the die twice, the probability of getting a even
1. 3 answers
2. asked by Austin
3. 4,212 views
The structural formula for acetic acid is CH3CO2H. What is its empirical formula; what is its molecular formula?
1. 1 answer
2. asked by Ceasar
3. 4,124 views
Caffeine a stimulant found in coffee has the mass composition of C, 49.48%, H, 5.19%, N, 28.85%, O 16.48%. The molar mass of
1. 3 answers
2. asked by Monique
3. 3,713 views
How many grams of SO3 are produced when 20 g FeS2 reacts with 16g O2 according to the balanced equation?4FeS2(s)+15
1. 1 answer
2. asked by Rebecca
3. 3,401 views
Some drugs combat obesity or alcohol addiction by turning off pleasure centers in the brain. However, if the dosage is too high,
1. 5 answers
2. asked by Dusty
3. 3,188 views
Ever been assigned to work on a group project for class! Many students dread group projects: because one student typically does
1. 4 answers
2. asked by Anna
3. 3,086 views
a cat walking at 0.25 m/s sees a mouse and accelerates uniformly at 0.40 m/s (squared) for 3.0 s. what is the cat's displacement
1. 4 answers
2. asked by h
3. 3,083 views
Solve the problem. Round the point estimate to the nearest thousandth.22 randomly picked people were asked if they rented or
1. 2 answers
2. asked by Anonymous
3. 3,079 views
1. All the food was gone.2. All the food were gone. 3. All the foods was gone. 4. All the foods were gone. (Which ones are
1. 1 answer
2. asked by rfvv
3. 3,045 views
Suppose the September CBOT Treasury bond futures contract has a quoted price of 89-09. What is the implied annual interest rate
1. 4 answers
2. asked by Ma
3. 2,821 views
Find the point in which the line x=1-t, y=3t, z=1+t; meet the plane 2x-y+3z=6
1. 2 answers
2. asked by mando
3. 2,563 views
Calculate Delta G for H2O(g) + 1/2 O2(g) <-> H2O2(g) at 600. K using the following data:H2(g) + O2(g) <-> H2O2(g) k = 2.3 X 10^6
1. 3 answers
2. asked by Summer
3. 2,530 views
Supose the water flows out from a pipe at 3 kg/s & its velocity changs from 5 to 0 on striking wall then the force exrted by
1. 4 answers
2. asked by Anonymous
3. 2,500 views
Political science professor: Many people insist that the Internet is revolutionizing the political process. They argue that
1. 3 answers
2. asked by Dusty
3. 2,345 views
give an example of a function that has:a) only one point of discontinuity b) exactly two ponts of discontinuity c) an infinite
1. 1 answer
2. asked by val
3. 2,299 views
If AB = 6, ST = 8, AC = 12, A = 40°, T = 20°, then find the length of RS.
1. 4 answers
2. asked by ?
3. 2,222 views
if it is 6pm @ 45 degree east what time will it be at 60 degree west?
1. 5 answers
2. asked by revalino
3. 2,192 views
1. CO2 in solid form is called dry ice. You have a block of dry ice that weighs 500g. How many moles of CO2 molecules do you
1. 2 answers
2. asked by Tayte
3. 1,924 views
for the equilibrium, SbCl3 (s)+H2O <==> SbOCl(s)+ 2HCl (aq)... A.) what reagent would you add to the system to dissolve SbOCl?
1. 1 answer
2. asked by lisa
3. 1,827 views
Which of the following statements are true regarding suction filtration? (select all that apply)a) Product should always be
1. 3 answers
2. asked by Rachel
3. 1,783 views
if 100j of heat energy is applied to a 25-g sample of mercury, by how many degrees will the temperature of the sample of mercury
1. 1 answer
2. asked by cindy
3. 1,514 views
In a large hotel, a fast elevator takes you from the ground floor to the 21st floor. The elevator takes 17 s for this trip: 5 s
1. 1 answer
2. asked by K
3. 1,438 views
1. A silver bar 0.125 meter long is subjected to a temperature change from 200C to 100C. What will be the length of the bar
1. 3 answers
2. asked by Anonymous
3. 1,432 views
Find the error in the following proof that all horses are the same color.CLAIM: In any set of h horses, all horses are the same
1. 1 answer
2. asked by Alex
3. 1,430 views
How much heat would be required to heat 1 gram of pure liquid water from 10C to 20C?How would i approach this problem?
1. 2 answers
2. asked by D
3. 1,405 views
You are given two different circles. The diameter of the first circle is the radius of the second circle. What is the ratio of
1. 1 answer
2. asked by PLEASE HELP
3. 1,380 views
Calculate the mass of HCl required to prepare 2.5 liters of a 0.08 molar solution of HCl.H 1.01 Hydrogen 17 Cl 35.45 Chlorine
1. 1 answer
2. asked by archie
3. 1,367 views
All of the following statements about skimming are true EXCEPT:A. skimming is not an effective techniques for retaining
1. 7 answers
2. asked by ciara
3. 1,355 views
An object with mass m1=5.00 kg rests on a frictionless horizontal table and is connected to a cable that passes over a pulley
1. 2 answers
2. asked by Dee
3. 1,340 views
An object of mass m is dropped at t=0 from the roof of a building of hdight h. A wind blowing parallel to the face of the
1. 0 answers
2. asked by Margaret
3. 1,336 views
find derivative using limit definition:f(x) = x - sqrt(x) so f'(x) = lim h->0 [f(x+h) - f(x)]/h but I keep trying to solve by
1. 2 answers
2. asked by terra
3. 1,319 views
A square with sides x + 2 and an equilateral triangle of sides with 2x have equal perimeters x = what?
1. 1 answer
2. asked by Mika
3. 1,303 views
Add polynomials0.15x^4 + 0.10x^3 - 0.01x^3 + 0.01x^2 + x 1.25x^4 + 0.11x^2 + 0.01 027x^3 + 0.99 -0.35x^4 + 15x^2 - 0.03 I don't
1. 1 answer
2. asked by Destiny
3. 1,297 views
A 2.0 m diameter merry-go-round is initially turning with a 4.2 s period. It slows and stops in 22.0 seconds. Before slowing,
1. 2 answers
2. asked by Me
3. 1,288 views
is this primary source ?The Black Death A Description of the Plague This first account is from Messina, and it described the
1. 5 answers
2. asked by mel
3. 1,283 views
a certain radioactive isotope has a half life of approx 1,300 years .How many years to the nearest year would be required for a
1. 2 answers
2. asked by HM
3. 1,263 views
Two boxes sit side-by-side on a smooth horizontal surface. The lighter box has a mass of 5.18 kg, the heavier box has a mass of
1. 0 answers
2. asked by jeff
3. 1,217 views
one of the tin isotopes has 50 protons and 63 neutrons. another isotope of tin might have a)50 protons and 0 neutronsb)50
1. 2 answers
2. asked by Anonymous
3. 1,208 views
reading titles and headings, and trying to get an overview of what lies ahead in a reading passage is called :A. questioning. B.
1. 6 answers
2. asked by ciara
3. 1,205 views
the number of neutrons in the nucleus of an atom of 9Be 4 under 9
1. 1 answer
2. asked by Anonymous
3. 1,194 views
To determine the number of deer in a game preserve, a conservationist catches 810 deer, tags them and lets them loose. Later 684
1. 1 answer
2. asked by Francine
3. 1,187 views
The coefficient of static friction between the 3.00 -kg crate and the 35 degree incline is .300. What minimum force must be
1. 0 answers
2. asked by Jas
3. 1,162 views
Which of the following statements is CORRECT? (Points : 10)If a bond is selling at a discount, the yield to call is a better
1. 0 answers
2. asked by Anonymous
3. 1,121 views
Sketch the graph of y=mx for the given values of m.m=3,-2,2/3,-1/4 please help me, I'm so confused!
1. 2 answers
2. asked by Divgar
3. 1,119 views
To make supporting points it is important that one finds relevant, accurate, and reliable sources. What should you consider when
1. 1 answer
2. asked by Sly
3. 1,112 views
I am having a hard time solving this problem. The formula given is:T=Tin - (Tin - Tinit.)e(-v/v)t If the initial temperature
1. 1 answer
2. asked by Kadeem
3. 1,104 views
how many valence electrons does a carbon radical possess?
1. 1 answer
2. asked by juan777
3. 1,089 views
A 34.3-kg child swings on a rope with a length of 6.11 m that is hanging from a tree. At the bottom of the swing, the child is
1. 0 answers
2. asked by didi
3. 1,084 views
a rectangular plot of ground having dimensions 46 feet by 30 feet is surrounded by a walk of uniform width. If the area of the
1. 1 answer
2. asked by Anonymous
3. 1,083 views
Recall that very satisfied customers give the XYZ- Box video game system a rating that is at least 42. Suppose that the
1. 0 answers
2. asked by AC
3. 1,080 views
The average height of members of the high school basketball team is six feet, three inches. Jerry is on the high school
1. 2 answers
2. asked by Dusty
3. 1,071 views
a scientist has two samples of a substance. both samples have the same temperature. one sample has a mass of 10 g. the other
1. 0 answers
2. asked by sha
3. 1,044 views
You have been asked to create a project plan paper based on research and the project management skills you have mastered in this
1. 3 answers
2. asked by Anonymous
3. 1,044 views
in the xy coordinate plane point b (-3,2) and point d (3,-4)are opposite vertices of square abcd if point h is the midpoint of
1. 1 answer
2. asked by marina
3. 1,041 views
john is standing 100 metres away from a building.the angle of elevationto the top of the building is8 degrees .He now walks
1. 1 answer
2. asked by Pauline Duma
3. 1,024 views
what causes a chemical bond to form between atoms ?
1. 2 answers
2. asked by john
3. 1,017 views
Calculate the empirical formula for the compound1.245g Ni, 5.381g I Can you help with the steps please
1. 1 answer
2. asked by Monique
3. 1,010 views
write each set in roster form and in set builder notation:N is the set of even numbers that are less than 2.5
1. 2 answers
2. asked by cristopher
3. 1,007 views
An airplane pilot sets a compass course due west and maintains an airspeed of 221km/h . After flying for a time of 0.490h, she
1. 1 answer
2. asked by Jenna
3. 1,001 views
1. Molarity is to moles of solute over liters of solution as molalityis to A. molar concentration over molal concentration. B.
1. 1 answer
2. asked by Jack
3. 995 views
Could you please check these sentences? Thank you very much.1) Before he went to Celtic Camp, Johnny did some mock exams as a
1. 1 answer
2. asked by Henry2
3. 991 views
A balloon has a volume of 1000cc at room temperature (27oC). I leave it in my parked car, which the sun heats up to 42oC. What
1. 0 answers
2. asked by Anonymous
3. 972 views
Most organic acids can be represented as RCOOH, where COOH is the carboxyl group and R is the rest of the molecule. (For
1. 1 answer
2. asked by Amber
3. 971 views
Can you please exlain to me if I'm wrong not just correct me.ps. Ceteris paribusor the following markets, show whether change
1. 2 answers
2. asked by allie
3. 968 views
a graduated cylinder contains 20.0 ml of water. when 100.g of a brass cylinder were added to the graduated cylinder, the water
1. 3 answers
2. asked by elizabeth
3. 967 views
You have two cups, one containing 100 g of ice at 0oC, the other containing 100 g of water at 80oC. You pour the hot water into
1. 0 answers
2. asked by Anonymous
3. 950 views
Find the equation of variation in which y varies jointly as x and z and y=8, x=4 and z=2
1. 1 answer
2. asked by So Confused
3. 948 views
What are the sign convention of pushes and pulls? Its for a lab where we push or pull a cart towards a motion sensor. I can't
1. 0 answers
2. asked by Anonymous
3. 944 views
The surface area and the average depth of the Pacific Ocean are 1.8 x 108 km 2 and 3.9 x 10 3 m, respectively. Calculate the
1. 1 answer
2. asked by Latrese
3. 929 views
The number of kilograms of water in the human body varies dirctly as the mass of the body. An 84-kg person contains 64-kg of
1. 3 answers
2. asked by Francine
3. 928 views
A baseball pitcher can throw a baseball at a velocity of 44.5 m/s. If the mass of the ball is 0.12 kg and the pitcher has it in
1. 1 answer
2. asked by Anon
3. 913 views
1. In which of the following units is acceleration expressed?*A. Newtons B. Foot-pounds C. Kilograms D. Meters per second
1. 3 answers
2. asked by Lizzy
3. 913 views
The speed of train A is 16 mph slower than train B. Train A travels 190 mph in the same time it takes train B to travel 270
1. 1 answer
2. asked by Francine
3. 905 views
how do i turn this sentence People who attract a lot of friends are neither negative nor greedy. into a parallel sentence
1. 1 answer
2. asked by mechia
3. 892 views
All sages provide both wisdom and inspiration. Since Dasha's speech contained wisdom and greatly inspired her audience, Dasha is
1. 1 answer
2. asked by Dusty
3. 887 views
A trapezoid is formed by placing a right isosceles triangle next to a square as shown in the figure. The total area is 54 ft2.
1. 1 answer
2. asked by Ashlee
3. 886 views
1998 scientists using a special type of electron microscope were able to measure the force needed to break a single chemical
1. 0 answers
2. asked by Amber
3. 886 views
A man stands on the roof of a 15m tall building and throws a rock with a velocity of magnitude 30m/s at an angle of 33deg above
1. 2 answers
2. asked by Kyle
3. 885 views
the density of water is 62.4 lbs/ft^3.what mass of water in kg will a rectangular hold if it measures 2.00 ft by 3.00 ft by 6.00
1. 1 answer
2. asked by Anonymous
3. 884 views
I am so confusedHow fast (in km/hr) must a plane fly along the Earth's equator so that the Sun stands still relative to the
1. 2 answers
2. asked by me
3. 875 views
Following are the men’s gold-medal times for the 100 m run in the Olympic games from 1896 to 2003, rounded tothe nearest
1. 0 answers
2. asked by darcel78
3. 864 views
•Huge corporations own every television network and most other media outlets. How does this affect their news coverage? How
1. 0 answers
2. asked by Her
3. 860 views
Translate to an algebraic expressionThe product of 45% and some number the translation is? Would it be .45/x?
1. 1 answer
2. asked by Katie
3. 859 views
Has the explosion of available information made media coverage better or worse?
1. 1 answer
2. asked by Her
3. 857 views
A car travels along a straight stretch of road. It proceeds for 14 mi at 50 mi/h, then 28.3 mi at 48 mi/h, and finally 37.4 mi
1. 2 answers
2. asked by anon
3. 857 views
Kevin and Cheryl has completed their first day of naturalistic obeservation of adolesents at the local hligh school. As they
1. 2 answers
2. asked by Thomas
3. 851 views
Explain why stomach cells have a large quantity of ribosomes and golgi apparatus ?
1. 0 answers
2. asked by Mr. Green
3. 838 views
Describe a pattern you could use to complete the following grid and then complete it. 0.35, , ,, , 0.95
1. 0 answers
2. asked by Anonymous
3. 836 views
Draw a number line. Make sure the following numbers are on your number line: 1,472; 1,560; 1,481.
1. 1 answer
2. asked by Danni
3. 836 views
In the SQR3 method, the three R's stand for all of the following EXCEPT:A. read B. recite C .revive D. review i got C what do
1. 3 answers
2. asked by ciara
3. 834 views
A new campaign finance reform bill being considered by Congress would limit the amount of campaign contributions that political
1. 2 answers
2. asked by Dusty
3. 831 views
An elevator (mass 4125 kg) is to be designed so that the maximum acceleration is 0.0300g.What is the maximum force the motor
1. 1 answer
2. asked by Bridge
3. 830 views
In the book: "A Tale of Two Cities"; in book one chapter one "The Period". What is that chapter taliking about it is really
1. 2 answers
2. asked by Kate
3. 823 views
the combustionof 1.0g of gasoline realises 11kcal of heat (Density of gasoline=0.74g/ml)a)how many megajoules are realised when
1. 2 answers
2. asked by nicky
3. 822 views
A camper kayaks 16km east from a camoing site, stops, and then paddles 23km west. What is the camper's final position with
1. 0 answers
2. asked by ted
3. 815 views
You have two cups, one containing 100 g of ice at 0oC, the other containing 100 g of water at 80oC. You pour the hot water into
1. 1 answer
2. asked by Allison
3. 808 views

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