Questions Asked on
October 9, 2009

physics
Is it possible to calculate the torque acting on a rigid body without specifying the origin?
asked by tom 
Math
14+263745+566771. ___? i don't know how to solve this so plz tell me this with solution. 12(24)+(36) my answer is 0 but its wrong i cant understand tell me this with solution plz. Thanks
asked by purplemath 
chemistry drbob222
I'm not sure if my 1 and 2 are correct, and I don't know how to do 3, 4, and 5. Any help is appreciated! 1) You wish to extract an organic compound from an aqueous phase into an organic layer. to minimizing the number of transfer steps, would it be better
asked by Anonymous 
Chemistry
What is the percent yield of CO2 if the reaction of 10.0g of CO with excess O2 produces 12.8g of CO2?
asked by Larry 
Chemistry
Consider the following electron configuration. (σ3s)2 (σ3s*)2 (σ3p)2 (π3p)4 (π3p*)4 Select four species that, in theory, would have this electron configuration.
asked by Tracey 
Chemistry
If 7.83 g FeCl3(s) is dissolved in enough water to make 2.50 L of solution, what is the concentration of Fe3+ in the solution?
asked by Kevin 
Chemistry
The kinetic energy of a rolling billiard ball is given by {\rm{KE}} = 1/2\,mv^2 . Suppose a 0.17{\rm kg} billiard ball is rolling down a pool table with an initial speed of 4.5 m/s. As it travels, it loses some of its energy as heat. The ball slows down
asked by Katherine 
Chemistry
When 1 mol of a gas burns at constant pressure, it produces 2424 J of heat and does 6 kJ of work. How do i calculate delta E for this problem? I tried q+w but that didn't work for me. I got the answer wrong.
asked by Katherine 
Chemistry
What is the mass of La2(C2O4)3*9H2O, can be obtained from 650mL of 0.0170 M aq solution of LaCl3 by adding a stoichiometric amount of sodium oxalate. I don't know how to balance the equation for this..i started: LaCl3+ Na2C2O4 > La2(C2O4)3*9H2O + NaCl
asked by Sindy 
math
A young man spent 1/4 of his allowance on a movie. He spent 11/18 of the remainder on afterschool snacks. Then from the money remaining, he spent $3.00 on a magazine, which left him 1/24 of his original allowance to put into savings. How much of his
asked by Bob 
Alg
I have to simplify this: (y^(1/4)*Z^4)^(4/5) My answer: (2z)^(1/2)/4z^4 Correct? Simplify (32SQRT2)(SQRT65) I have no idea how to foil this one.
asked by Dan 
physics
A manager of a restaurant pushes horizontally with a force of magnitude 150 N on a box of melons. The box moves across the floor with a constant acceleration in the same direction as the applied force. Which statement is most accurate concerning the
asked by leslie 
physics
what is the angular speed of Earth around the Sun in radians per second
asked by craig 
math
A woman 5 ft tall is standing near a street lamp that is 12 ft tall. Find a function that models the length L of her shadow in terms of her distance d from the base of the lamp.
asked by David 
physics
In a tugofwar between two athletes, each pulls on the rope with a force of 190 N. What is the tension in the rope?
asked by chole 
Chemistry
The combustion of benzoic acid releases 26.38kJ/g and is often used to calibrate a bomb calorimete. The combustion of 1.045g of benzoic acid caused the temperature of the calorimeter to rise by 5.985 degreeC.Using the same calorimeter, a sample of 0.876g
asked by Sindy 
physics
A test car starts out from rest on a horizontal circular track of 80m radius and increases it's speed at a uniform rate to reach 27.78 m/s in 10s. Find the magnitude of the total acceleration of the car 8s after the start. Ok so I know that the total
asked by Jessi 
Math
Minimizing Sum: Find two positive numbers whose sum is 100 and the sum of whose squares is a minimum.
asked by David 
math
At a dinner party, every 3 guests used a dish for rice between them; every 4 a dish for broth; every 2 a dish for meat. There were 65 dishes in all. How many guests were there?
asked by Gabby 
System analysis
suppose a system memory requirement is more than the available memory size. Will call it a software problem although the crisis is with the hardware? Why?
asked by Beta plus 
4 grade FL social studies weekly
which explorer landed near Manatee River and then explored La Florida, finally discovering the mississippi river before he died?
asked by 4 grade FL social studies weekly 
Math
What are the advantages and disadvantages of using least common denomonator when adding or subtracting fractions?
asked by Kara 
physics
Vroomvroom! As soon as a traffic light turns green, a car speeds up from rest to 50.0 mi/h with a constant acceleration of 8.40 mi/h·s. In the adjoining bike lane, a cyclist speeds up from rest to 20.0 mi/h with a constant acceleration of 11.5 mi/h·s.
asked by blair 
Math
Change each repeating decimal to fraction form.0.1515 . . .5.246246 . . .,0.21313 . . .,3.98777 . . .
asked by Anonymous 
socials
what products were grown in the poorest region of France? Give some reasons why farmers in these regions were poor. I wrote: Products which were grown in the poorest regions of France were corn, wine, and rye. Farmers in these regions were poor because
asked by sara 
french
Ma famille et moi, nous aimons beaucoup être dehors. Quand nous avons le temps, nous sortons de la maison et nous campons dans les montagnes ou près d'un lac. Il est très important d'avoir tout ce qu'il nous faut* pour camper parce que sinon on peut
asked by Keyanna 
Math
Maximizing Area: Among all rectangles that have a perimeter of 20 ft, find the dimensions of the one with the largest area.
asked by David 
englishgr9
if anyone has read the book " The Last Book in the Universe" , i have a question. I forgot the book at home and i have to find quotes from the book to match up with the 7 stages of a hero, but i only need 3 more. 4) The hero must overcome obstacles /
asked by becca 
chem
NaNO3 + H2O >
asked by zenda 
Huge Math Word Problem
The owner of a rental house can depreciate its value over a period of 27 1/2 years, meaning that the value of the house declines at an even rate over that period of time until the value is $0. My question is by what fraction would the value of the house
asked by Anonymous 
grammar
In the following sentence select the compound predicate. We could study coins, see jewels, or examine tools. A. study,see B. could study, examine C could study,see, examine D study, see, examine Which of these is the correct answer. I think its D. I am not
asked by Anonymous 
Math
Use the common denominator method to solve 3/5 divided by 2/3
asked by Kara 
Physics
Suppose you want to take a chest Xray with an Xray source that has a divergence of 2^o . If the film is 1 meters from the (point) source, how big is the spot size at the film in centimeters?
asked by Kelly 
physics
A person takes a trip, driving with a constant speed of 98.5 km/h except for a 21.0 min rest stop. If the person's average speed is 63.3 km/h, how much time is spent on the trip and how far does the person travel? How much time in hours and how far in km
asked by Nicole 
MATH
determine if the fraction has a terminating decimal representations. (2^4)x(11^16)x(17^19)  (5^2) how would I do this?
asked by Henry 
sra J McGuin help please
Hi  I have about 15 mins to finish htis will you be on while i try to make the changes
asked by sam 
Math
Use the missing factor method to find the quotient 3/5 divided by 2/3? What is the missing factor method?
asked by Anonymous 
physics
Is it possible for a car to move in a circular path in such a way that it has a tangential acceleration but no centripetal acceleration?
asked by shawn 
Physics
A hare and a tortoise compete in a race over a course 1.20 km long. The tortoise crawls straight and steadily at its maximum speed of 0.540 m/s toward the finish line. The hare runs at its maximum speed of 9.00 m/s toward the goal for 0.800 km and then
asked by Chloe 
physic
Hi!Question:Two packing crates of masses m1 = 10.0 kg and m2 = 6.50 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The 6.50 kg crate lies on a smooth incline of angle 45.0°. Find the acceleration of the
asked by Chan 
math
how many significant figures do the following numbers have? 1)0.023 2) 1000 3) 8120 4) 7.991 * 10^10 5) 0.00390 6) 9.010 * 102 7) 9.0 * 10^3 8) 3.4 *10*4 9) 1090.00010. How is 1090.00010 written in scientific notation?
asked by jo 
college
find an approxiamte value for the rate at which the moon orbits the earth. Assume that the moon's orbit is circular. the distance between the moon and earth is 382,000,000 meters.
asked by Jazmine Beatty 
math
Sam bought 1 of 250 tickets selling for $2 in a game with a grand prize of $400. Was $2 a fair price to pay for a ticket to play this game?
asked by Aleah 
it programming
design a program that models the worms behavior in the following scenario. A snake is moving towards a hole. Each time it moves, the snake cuts the distance between itself and the hole by its own body lengthuntil the snake is close enough to enter the
asked by steve 
Algebra
Could someone please explain to me why the line x=4 is a vertical line. Thank you.
asked by Terri 
statistics
A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a 1hour fight is .02. What is the probability that (a) both will fail? (b) Neither will fail? (c) One or the other will
asked by steven 
math
How many batting lineups of the nine players can bemade for a baseball team if the catcher bats first, the shortstop second, and the pitcher last?
asked by Aleah 
Algebra
plane ascends at a 40° angle. When it reaches an altitude of one hundred feet, how much ground distance has it covered? To solve, use the trigonometric chart. Round the answer to the nearest tenth.
asked by Pedro 
Math
Use a different integer 1, 2, 3, or 4 for each of a, b, c, and d in the multiplication sentence a/b x c/d to make the greatest possible product. Where would I put the four integers 5, 6, 7, and 8 to make the greatest possible product? But then how would I
asked by Anonymous 
Math
A rotating videocamera in the parking garage goes through 4 complete rotations in 3/4 hour. How many rotations will it make in 1 hour? Would this be a two part solution?
asked by Anonymous 
Math Word Problem
At the 1988 Summer Olympics in Seoul, South Korea, Florence GriffithJoyner ran the 100meter dash in 10.49 seconds (a world record). What was her speed in miles per hour? (1 meter is approximately 39.37 inches.)
asked by Anonymous 
Alg 2 hon
An executive flew in the corporate to a meeting in a city 1500 km away. After traveling the same amount of time on the return flight, the pilot mentioned that they still had 300 km to go. The airspeed of the plane was 600 km/h. How fast was the wind
asked by Suchi 
math
Can someone please help me solve this? What are the odds in favor of drawing a spade and a heart?
asked by Aleah 
math
would 64974000345 be written 6.4*10^10 or 6.4974*10^10 2) how would you write 7.991*1010 in scientific notation? 3) does 9.0 have 2 (sf) and 100.0000 have (7sf)?I'm confused about the trailing zeros when it comes to decimal points.These are trailing
asked by jo 
college
create a table that lays out a daytoday plan to use as a job aid for your employment search, spanning 3 weeks
asked by Michele 
math
The mean systolic blood pressure of adult males is normally distributed with a mean of 138 (millimeters of mercury) and a standard deviation of 9.7. What percent of adult males have blood pressure between 161.28 and 164.9?
asked by Aleah 
visual basic
Program that i am having trouble with having hard time how to figure out to assign nonzero digit to a variable! Create a variable first as integer Assign first non‐zero digit of your V‐number to the variable first
asked by vsu1 
math
Estimate the number of personally constructed greeting cards possible at a machine if there are 12 designs, 30 messages, 18 closings, and 10 different paper stocks on which to print the card. Indicate how you made your estimate. How valid was your estimate
asked by Aleah 
English
When doing a work cited page do you have to put the pages that you used. I already inserted the pages that I used when I sighted in my paper?
asked by Monica 
Math
For the following equations, write a word problem draw a picture, and find the solution to the equation: 5/12  1/3= 1/2  2/3=
asked by Anonymous 
Math
What is the product of (1 1/3+3 1/2)(3/4)
asked by Tim 
Math 1
Without finding the exact answer, select which of the following numbers is the best estimate of each sum or difference of 2/3, 0, or 2/3. of the problem 1/9 + 2/5  1/3  3/4. How would you solve this as an estimation?
asked by Anonymous 
Math
Find the point of intersection between y=2(1/2)x and y=1+ax. (a=alpha sign). You answer will be a point in the xy plane whose coordinates involve the unknown a . I got that which is x=2/(2a+1), y=(1+2a)/(2a+1)
asked by SC 
Corporate Finance
Nolan is in favor of a share repurchase. He argues that a repurchase will increase the company’s P/E ratio, return on assets, and return on equity. Are his arguments correct? How will a share repurchase affect the value of the company?
asked by Anonymous 
Math Word Problem
Let A be the set containing all rational numbers that are less than 5. Is there a rational number q in set A such that all other numbers in set A are less than q? Why or why not?
asked by Anonymous 
economics
who among the founding fathers is the visionary of industrialization?
asked by j cook 
physic
Hi!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 and is then fastened to a hanging object with mass m2 = 10.0 kg, as shown in the figure below. Find the acceleration of each
asked by Chan 
CHEMISTRY
WHAT IS THE MAJOR PRODUCT OF DEHYDRATION OF AN ALCOHOL?
asked by HEATHER 
science
what is air? a compound, a mixture, a solution, or an amalgam
asked by richard 
Physics
A disc of radius 50.0cm is rotating at 120 rpm, and its angular acceleration is 3.00 rad/s^2. Find the magnitudes of the velocity, v, and tangential acceleration, a, of its outer edge.
asked by Bill 
MATH
If a population consists of ten thousand individuals at time t=0 (P0), and the annual growth rate (excess of births over deaths) is 3% (GR), what will the population be after 1, 15, and a 100 years (n)? Calculate the "doubling time" for this growth rate.
asked by HEENA 
math
what characteritic do the numbers 8,10,15,26 and 33 have that the numbers 5,9,16,18 and 24 don't have
asked by Anonymous 
Beth/225
Research Methods Matrix A psychologist is planning to conduct a study that would examine pathological liars and the quality of their romantic relationships. You have been asked to provide the psychologist with a recommendation for which research method
asked by Anonymous 
French
Translate these sentences in French please. I see you. He sees us. We see them. She sees them. She sees you all. I invite you. I invite him. He invites us
asked by Keyanna 
French
Give your opinions by answering the following questions in complete sentences in French. Quel est ton sport favori? À ton avis, le tennis est plus intéressant ou moins intéressant que le football? À ton avis, quel est le sport le plus ennuyeux? Pour
asked by Keyanna 
Chemistry
A 0.1mol/dm^3 aqueous solution of phosphoric (V) acid, H3PO4, is mixed with a 0.1 mol/dm^3 of aqueous solution of sodium hydroxide. Which mixture will form the salt Na3PO4? a) 10cm^3 of H3PO4 with 30cm^3 of NaOH b) 10cm^3 of H3PO4 with 10cm^3 of NaOH c)
asked by Marrion 
Math
For y = a sin x 'a' is called the amplitude. What effect does 'a' have on a graph ??? Please help if you can .
asked by Nat 
english
Ranging from the use of pictures at the beginning og wtiting, to the birth of the photonic alphabet.
asked by Raedena 
science please!
1. Why is the electric potential midway between a dipole equal to zero? 2. How can you identify an equation as being that of a fractal? 3. How does a current carrying wire on top of a magnetized compass needle affect its direction? THANKS
asked by Dee 
math
1.A box contains four red marbles, seven white marbles, and five blue marbles. If one marble is drawn at random, find the probability for each of the following: a.A blue marble is drawn: ______ b.A red or blue marble is drawn: _____ c.Neither a blue or red
asked by cindy 
Math
Separate the fractions 2/6, 2/5, 6/13, 1/25, 7/8, and 9/29 into two categories. The two categories are those that can be written as a terminating decimal and those that cannot. I don't understand what a terminating decimal is.
asked by Anonymous 
Math
Without finding the exact answer, select which of the following numbers is the best estimate of each sum or difference of 2/3, 0, 2/3. 1/9 + 2/5  1/3  3/4
asked by Anonymous 
Science
For a toy cannon that fires out masses, how will the velocity of a projectile of mass m from the cannon compare to one of mass 2m? [What is the principle behind this since the answer is for mass of 2m a speed of (v/radical 2)] Please help!
asked by Dee 
4 grade FL social studies weekly
why did explorers come to the new world?
asked by 4 grade FL social studies weekly 
socials
develop a hypothesis that could explain why some French farmers were relatively welloff while others were very poor. A hypothesis is a proposed answer,based on actual evidence,to a question. I need help on this thanks:)
asked by sara 
Math
Use common denominators to compare the pair of rational numbers of 5/7 and 5/8.
asked by Anonymous 
Math
Is the product of two irrational numbers always an irrational number?
asked by Sara 
Math
Use a linear model (for example, a number line, a ruler) to compare the pairs of rational numbers 1/4 and 1/6
asked by Anonymous 
Math
A terminating decimal ends after a certain finite number of decinal places, and does not have to be rounded off. An example would be 378 = 0.875 Your selfterminating decimal fractions are: 2/5, 1/25, and 7/8 So how would I form a conjecture of the
asked by Anonymous 
Math
A roll of carpet 9 feet wide is 30 feet longer than a roll of carpet 15 feet wide. Both rolls have the same area. Find the dimensions of each.
asked by Mike 
Calculus
Find the derivative of tanh(e^t)
asked by Z32 
science
independent variable
asked by keni 
algebra
I need to solve this using the addition and multiplication principle. 5+8x
asked by Linda 
science
briefly identifying three fresh and three ocean water resource issues
asked by Anonymous 
critical thinking
How can I apply critical thinking when evaluating, articles, advertising, media and conversations?
asked by Bruce 
math
how would I write this in scientific notation 04980000007507 I am getting confused with it all can you help me fine examples with this. thanks also how would I add this up 10^4+10^4+10^3= is it 21000 or 10^11
asked by jo 
Factoring
x^2+6x=7 i factored it so it's (x+7)(x1)=0. The answers I got were 7 and 1. Is this correct? Thanks!
asked by Corinna 
language arts
Can you tell me of any websites that I could practice my grammar skills?
asked by Anonymous 
math
convert each of the following: . 155km to m . 2.56Ml to l .155uF to mF . 1,850nm to mm . 1.68Gb to Mb . 165pm to nm
asked by jo 
math
Height: The volume of a cone is 100 in^3. Find a function that models the height h of the cone in terms of its radius r.
asked by David 
math
This is a confusing problem to me also, can someone please help me? What are the odds in favor of getting at least one head in three successive flips of a coin?
asked by Aleah 
To Ms. Sue
here is the hypothesis: If farmers could own more plots of land, then they could grow more agricultural products. Sorry if I posted this a bit late. Can you tell me if this is correct, this is all I could come up with ,thanks
asked by sara 
sra j mcguin PLEASE HELP
Although this was my first trip to another country, I was not scared when the plane took off. I was traveling to where my great grandfather had been born. En ese momento el jet sacado, no tenía miedo. Aunque éste era mi primer viaje a otro país. Viajaba
asked by sam 
sra j mcguin PLEASE HELP
Era muy emocionado mientras que amé el eschucio de las muchas historias sobre Ismir, Turquía I was very emtional while I was learning the history of my family in Ismir, Turkey
asked by sam 
Math
Height: The volume of a cone is 100 in³. Find a function that models the height h of the cone in terms of its radius r.
asked by David 
Calculators memory?
For the TI84 plus edition calculators do the programs you created and notes you put on there get deleted once you change the batteries? this is a very urgent question. thank you.
asked by Gaby 
French
Prepare three groups of statements that compare three things. The sentences may be something similar to this: Music is fun. Tennis is more fun than music. French is the most fun of the three.
asked by Keyanna 
French
Two questions in French about activities that your classmates prefer or want to do.
asked by Keyanna 
French
REad the passage below and please answer the following questions. Je n'habite pas dans une grande ville. J'habite à la campagne. La vie à la campagne est très amusante. Je m'amuse beaucoup avec les animaux et avec les activités que je peux faire. Je
asked by Keyanna 
math
Can someone please help me with this problem also? A study of motor vehicle rates in the 50 states reveals that traffic death rates (deaths per 100 million motor vehicle miles driven) can be modeled by the normal curve. The data suggest that the
asked by Aleah 
English
Is inricuous a word and if so what is the definition.
asked by Ashlynn 
math
Can someone help me explain this misconception? A student asks, “What’s wrong with the argument that the probability of rolling a double 6 in two rolls of a die is because ” Write an explanation of your understanding of the student’s misconception.
asked by Aleah 
current events
what happened on the moon on october 9, 2009
asked by kim 
Biology
What's the difference between LB "" and LB "+"?
asked by Kevin 
Math
Explain why the definition of a fraction restricts the denominator to being a nonzero integer.
asked by Anonymous 
Math
Kendra has 4 yards of electrical wiring to use in setting up her science fair experiment. She needs to cut it into lengths of yard. How many pieces will she be able to make from the 4 yards? would this be solved by 4 divided by 3/4?
asked by Anonymous 
physics
A force of 70.0 N is exerted at an angle of 30.0° below the horizontal on a block of mass 8.00 kg that is resting on a table. What is the magnitude of the normal force acting on the block?
asked by keisha 
Math 1
Find the solution and write a word problem for 5/12  1/3 and 1/2  2/3
asked by Anonymous 
French
I am working on a paragraph and I need help on my introduction. Hi, I'm Lisa, and I love to play sports such as volleyball, and soccer. One sport I don't like is hockey, because I it doesn't really interest me.
asked by Lisa 
Help
is tutorvista a free website
asked by Lisa 
Help please
can someone please look at my earlier post on socials, I would like all the help i can get, thank you
asked by sara 
Precalc
Can you simplify radical 253?
asked by MUFFY 
Political Science
What does the Federal Reserve have to do with unemployment?
asked by Kate 
Math
Find each quotient 3/4 divided by 12 5/4 divided by 2 2/3 18 divided by 4.6 3.06 divided by 0.22
asked by Anonymous 
math
12.34(9.32.7)(0.3)
asked by iksha 
Physics
Ok work... work = net force parallel to displacement lets say something was pushed up a ramp at a constant velocity and you were asked how much work was done by pushing the block well the forces parellel to the displacement is the x component of gravity
asked by Physics 
English
In "The Canterbury Tales" there is a second and third priest as pilgrims. Does anyone know a link that I can find information out about them? Thanks
asked by Mike