Questions Asked on
August 12, 2009

Physics
There is a proton that is at the origin and an electron at the point x= 0.42nm and y=0.36nm. Find the elctric force on the proton for Fx and Fy. For my total force I got 7.53*10^11N For my x direction I got 5.8 *10^11N, and for my y dirction i got 5.1
asked by Sammy 
chem
What VSEPR “shapes” and bond angles do you find in Toluene?
asked by chrissy 
MATH Prob.
A class elects two officers, a president and a secretary/ treasurer, from its 12 members. How many different ways can these two offices be filled from the members of the class?
asked by Twg 
Math
The perimeter of a rectangular field is 302 yards. If the length of the field is 84 yards, what is its width?
asked by Karl2472 
physics
does the slope of a distance vs. time graph show the average velocity or the instaneous velocity I'm asked the question and don't know which one. I believe that it would be the instaneous value because the slope is refering to one point on the graph... not
asked by physics 
hISTORY
Which of the following had the greatest impact on women's lives after World War I? A. New Deal programs B. laborsaving devices C. equalopportunity laws D. the creation of many new jobs
asked by Warda 
Physics
There is a proton that is at the origin and an electron at the point x= 0.42nm and y=0.36nm. Find the elctric force on the proton for Fx and Fy. For my total force I got 7.53*10^11N For my x direction I got 5.8 *10^11N, and for my y dirction i got 5.1
asked by Sammy 
Differential calculus
Given that f(x)=x, g(x)=x1: h(x)=sqrt(x1) find f0g0h.
asked by Matrix school 2 
Math
I need to find the missing length of a right angle if one side is 7 and one is 25?
asked by Richard 
MATH Prob.
The number of accidents that occur at the intersection of Pine and Linden streets between 3 p.m. and 6 p.m. on Friday afternoons is 0, 1, 2, or 3, with probabilities of 0.84, 0.13, 0.02, and 0.01, respectively. Graph this probability distribution. What is
asked by Twg 
Physics
A 3.5 uC charge experiences a 13N i hat electric force in a certain electric field.What would the force be for a proton experience in the same field? I amd doing this 13/3.5=3.7 then multiplying 1.6*10^19 where did i go wrong
asked by Sammy 
Differential calculus
Given that f(x)=x, g(x)=x1: h(x)=sqrtx1. find f0g0h.
asked by matrix school 2 
science
ok my summer homework is to explain how the si system is used in the scienetific community. HELP!
asked by bobbie 
social studies
Farming to obtain food requires time. This leads people permanent villages. Which of the following nativeamerican groups developed settlements due to their farming practices?
asked by keisha benson 
statistics
A random sample of 10 observations has been drawn from a normal population, and the sample variance is found to be s² = 19.5. Determine the 98% confidence interval for ó².
asked by Laura 
MATH Prob.
Five numbers are to be picked, without repetition, from 44 numbers to determine the winner of the Fortune Five game in the state lottery. If the order of the numbers is insignificant, how many different ways can a winning quintuple be selected? What is the
asked by Twg 
Physics
ok were doing a lab h t t p: / /i m g2 0 0. i m a ge s h a c k. u s / im g 2 0 0 / 30 3 8 /s k e t c h 2 p q g. j p g the timer in the picture makes a mark on the tape at a set interval... my question is well what is actually is happening is that I'm
asked by QUESTION 
history help plz
Although it put many farmers out of work, the _____ made English farming more productive.
asked by gabriel 
Math
A tree casts a shadow that measures 5 m. At the same time, a meter stick casts a shadow that is 0.4 m long. How tall is the tree?
asked by Kati 
math
A tree casts a shadow that measures 5 m. At the same time, a meter stick casts a shadow that is 0.4 m long. How tall is the tree?
asked by scooby91320002 
statistics
For three independent samples, each with n= 100, the respective sample proportions are 0.30, 0.35, and 0.25. Use the 0.05 level in testing whether the three population proportions could be the same.
asked by Laura 
Physics
There is a figure q1= 23 uC and q2= 16 uC. The force on q1 points in the x direction. q1 is at (0,1) q2 is at (2,0) q3 is at (2,2) What is the magnitude of the force on q1? I am doing this (9*10^9)(23*16)(4ihat)7^3 where did i go wrong?
asked by Sammy 
MATH Prob.
Battery Power Problem. A certain type of thermal battery for an airplane navigation device backup power has a mean life of 300 hours with a standard deviation of 15 hours. What proportion of these batteries can be expected to have lives of 322 hours or
asked by Twg 
MATH Prob.
A ship carries exactly 10 different signal flags. If each possible combination and ordering of 4 of these flags connotes a specific message, how many signals can be sent with these flags, taken 4 at a time?
asked by Twg 
science
Describe the benefits of the human genome project.
asked by isabella 
Math
I need to know the square root of 196.
asked by Brandon 
Math
Consider the function y=sqrt(1+cos2x)/2 (everything is under the square root) a. Can x take on any real value? b. How large can cos 2x become? How small? c. How large can 1+cos2x/2 become? How small? d. What are the domain and range of the original
asked by Momo 
science
how do scientists use measuremnets?
asked by bobbie 
math
y=x^2e^x I am suppose to find the dy/dx of this the way i did it was x^2e^x times dy/dx of x^2 and got x^2e^x times 3x^2 this is not right and im confused on how to solve it help pls.
asked by sonia 
Algebra
Could someone work this out for me? Someone says the answer is 2.34 x 10^6 but I think it's 2.34 x 10^4. 2 x 10^3 = 3 x 10^8 x 1/6 x pi x d Solving for d. Sorry it's kinda messy.
asked by Zack 
geography
How does the study of other disciplines help geographers in their work as countries become increasingly interdependent?
asked by Hope 
statistics
A random sample of n= 12 is drawn from a population that is normally distributed, and the sample variance is s©÷ = 19.3. Use ¥á = 0.025 in testing ¥Ç₀ : ¥ò©÷ ¡ 9.4 versus ¥Ç©û : ¥ò©÷ > 9.4
asked by Yadira M 
MATH Prob.
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 Twg 
MATH Prob.
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 distribution has a mean of 5.3 and a standard deviation of
asked by Twg 
science
What are the advances in the field of biology?
asked by isabella 
science
Describe how genetic engineering has been used to improve plants.
asked by isabella 
business statistics
For df = 5 and the constant A, identify the value of A such that a. P(x² > A) = 0.90 b. P(x² > A) = 0.10 c. P(x² > A) = 0.95 d. P(x² > A) = 0.05 e. P(x² < A) = 0.975 f. P(x² < A) = 0.025
asked by Lesliam 
calculus
I=g^2/da
asked by jon 
Differential Calculus
(1) lim x^3  125/x5 x^2  25 (2)find the inverse of the function f(x)=7x+5
asked by matrix school 2 
A.P. Economics
Why must the opportunity cost of a decision always be something desirable?
asked by Ami 
statistics
A research organization has collected the following data on household size and telephone ownership for 200 U.S. households. At the 0.05 level, are the two variables independent? Based on the chisquare table, what is the most accurate statement that can be
asked by Vannessa 
PROBABILTY
WHAT IS AN EXAMPLE OF DISCRETE DISTRIBUTION AND CONTINUOUS DISTRIBUTIONS?
asked by Twg 
MATH Prob.
How many batting lineups of the nine players can be made for a baseball team if the catcher bats first, the shortstop second, and the pitcher last?
asked by Twg 
MATH Prob.
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
asked by Twg 
Math
Jim rents a truck. There is a fee of $15.99, there was an additional charge of 79 cents for each mile driven Jim had to pay $172.41 when he returned the truck. For how many miles did he drive the truck?
asked by Karl2472 
English
Background Ten years ago, you started working as a clerk for DMD Medical Supplies. Six months ago, Liz Jakowski, the human resources director, promoted you to office manager. You manage two employees: Jack Snyder and Ruth Disselkoen. Your office provides
asked by Marie 
science
What is a therapeutic cloning and reproductive cloning?
asked by isabella 
Mechanics unscramble
Need help. I know this is 2 words related to safety. Please unscramble GSMSAHNIDRULEAOECC
asked by Kimberly 
Math
Gasoline accounts for 85% of the motor fuel consumed in the United States every day. If 8,882 thousand barrels (bbl) of motor fuel is consumed each day, how much gasoline is consumed each day in the United States? Round to the nearest barrel. I need help
asked by Haley 
Math
A school had 900 students at the start of a school year. If there is an enrollment increase of 7% by the beginning of the next year, what is the new enrollment?
asked by Sarah 
Government
The constitution has comparatively little to say about the structure and composition of the supreme court. Identify two aspects of the court's structure and composition that the constitution does not specify.
asked by Cherokee 
Math
The United States emitted 19.5 million t of nitrogen oxides (NO) into the atmosphere in 1987. One metric ton (1 t) equals 1,000 kg. How many kilograms of NO were emitted to the atmosphere in the United States during 1987?
asked by Regina 
statistics
A random sample of n = 30 is drawn from a population that is normally distributed, and the sample variance is s©÷ = 41.5. Use ¥á = 0.05 in testing ¥Ç₀ : ¥ò©÷ = 29.0 versus ¥Ç©û : ¥ò©÷ ¡Á 29.0
asked by Marianne 
physics
ok i'm doing a lab were walking different displacements I observed that the displacements were on different grades of steepness this would decrease the coefficent of kinetic friction?
asked by physics 
check geo
some people in the frenchspeaking province of ________ are interested in gaining independence from canada. A. Nunavut B. Quebic C. Alberta D. Montreal .I chose B Quebec. Canada and the united states differ i thier: A. Population B. Climate C. Goverment
asked by henry 
check geo
in the 1800s ___________ opened up the western united states to immagration and buisness. A. The transcontinental railroad B. The underground railroad C.Route 66 D.Cattle farming .The answer I chose was B .
asked by henry 
check geo
what name is given to a system of trade in which individuals can operate and profit from buissness? a)communism b)free market economy c)surplus d)monopoly its b.
asked by henry 
check geo
the united states is a leading exporter of : a)oil and natural b)rice products C)beef and grain d) cranberries and rasberries. i choose a
asked by henry 
check geo
the united states is a leading exporter of : a)oil and natural b)rice products C)beef and grain d) cranberries and rasberries. i choose a
asked by henry 
english
ive to evaluate the media by the following ways: a newspaper editorial a letter to the editor radio or television commercial a magazine advertisement ive to describe what does each one try to persuade you to believe or do. so where can i find on net all
asked by bindiya farswani 
Math
Jennifer has eleven dresses. Two of the dresses are yellow. What fraction of her dresses are not yellow?
asked by tracy 
Math
Stephanie received twentyone email messages. Three of them were from her mother. What fraction of the messages were not from her mother? Can you please provide the answer in numeric form?
asked by Tracy 
english
Is this sentence capalized right. The striking colors of autumn leaves are admired by nearly everyone.
asked by ???? 
math, business?
Business and finance. Ms. Jordan has been given a loan of $2,500 for 1 year. If the interest charged is $275, what is the interest rate on the loan?
asked by scooby91320002 
science
how do scientists use the si system?
asked by bobbie 
science
what is the si base unit for density, liquid, and rectangular solid?
asked by bobbie 
social studies
whats a site that i can get articles about prehistoric humans?
asked by bobbie 
science
how is the si system is used in the scienetific community
asked by khris 
english
is texting bad for my grammar?
asked by bobbie 
foreign language
can i learn two languages at once?
asked by bobbie 
Trigonometry
9x^424x^3+16x^2 (Find all solutions!)
asked by Carl 
physics
ok i saw the responses thanks still a little bit confused ok what variable is different or varaies in the sitations were you to walk say down a hill and feel that it is easier and when walking up a hill which is harder
asked by physics 
8th grade
Fine the complete subject or predicate of the sentence. then identify the simple subject or verb. Examble; The peaks of the undersea mountains rise above the surface of the water and form islands.
asked by keimon 
Business
What insights or reactions do you have concerning what you now know about the field of business?
asked by Anonymous 
business statistics
In testing the independence of two variables described in a contingency table, determine the critical value of chisquare if the test is to be conducted at the a. á= 0.025 level and d f = 5 b. á = 0.05 level and d f = 8 c. á = 0.01 level and d f = 6 d.
asked by Marianne 
business statistics
In a test of the independence of two variables, one of the variables has two possible categories and the other has three possible categories. What will be the critical value of chisquare if the test is to be carried out at the o.025 level? At the 0.05
asked by Marianne 
business statistics
For d f = 5 and the constant A, identify the value of A such that a. P(x² > A) = 0.90 b. P(x² > A) = 0.10 c. P(x² > A) = 0.95 d. P(x² > A) = 0.05 e. P(x² < A) = 0.975 f. P(x² < A) = 0.025
asked by Marianne 
math
it is less than 60 and greater than55 if you add digits the sum is 13. write the number
asked by chloe 
geography
what kinds of geographer might be employed by a manufactering company?
asked by Hope 
MATH Prob.
How many 4character license plates are possible with 2 letters from the alphabet followed by 2 digits, if repetitions are allowed? if repetitions are not allowed?
asked by Twg 
math
use counters to model and find these products 2(5).
asked by Shantel 
MATH Prob.
A student asks, “What’s wrong with the argument that the probability of rolling a double 6 in two rolls of a die is 1/3 because 1/6 + 1/6 = 1/3?" Write an explanation of your understanding of the student’s misconception.
asked by Twg 
MATH Prob.
A jar contains four marbles, each a different color: red, blue, green, and yellow. If you draw two marbles from the jar, one after another, replacing the first before drawing the second, what is the probability of getting a. two red marbles? b. a red
asked by Twg 
MATH Prob.
Suppose that pizzas can be ordered in four sizes (small, medium, large, and Illinisize), with three crust choices (thin, thick, and Chicago style), four choices of meat (sausage, pepperoni, hamburger, and none) and two types of cheese (regular or double).
asked by Twg 
Physics
There is a 85 uC point charge at the origin. What is the electric field at the point x= 45cm , y= 55cm. I am doing (.45+.55)/(.45^2+.55^2)^3/2 Where did I go wrong? I have to find the elctric point for the Ex and Ey.
asked by Sammy 
Math
For his long distance phone service, Miguel pays a $2 monthly fee plus 12 cents per minute. Last month, Miguel's long distance bill was $24.92 . For how many minutes was Miguel billed?
asked by Karl2472 
Math
Amanda received a 70 gift card for a coffee store. She used it in buying some coffee that cost 7.37 per pound. After buying the coffee, she had 25.78 left on her card. How many pounds of coffee did she buy?
asked by Karl2472 
English
Should I double space anywhere on this? I'm replying to your advertisement in the San Jose Mercury newspaper. I understand that you’re actively seeking to hire a quality Medical Office Assistant. I worked for The Berman Skin Institute as a Front Desk
asked by Anoym. 
Logarithms
1. Find the amount of time required for an investment to double at a rate of 12.3% if the interest is compounded continuously. MY ANSWER: 5.635 yrs 2. Solve e^(0.2x) < 21.2 by using natural logarithms. MY ANSWER: X
asked by Jackie 
history
In 1905, Einstein challenged Newton's view of the universe with the?
asked by gabriel 
social studies
why understanding how to use a map is important?
asked by Sean 
science
How is recombriant DNA technology used in medicine?
asked by isabella 
physics/medical physics
please assist me to get project topic under biophysics or application of physics in medecine
asked by mataos 
History
What factors make it more likely that a bill will become law? What factors make it less likely? Is it easy or difficult to pass a bill? What are some of the advantages of passing legislation quickly? What are some of the disadvantages?
asked by Janie 
12th grade
Where in the Constitution is the Electoral College described? (I know there are two parts)
asked by Jordan 
business statistics
It has been reported that 10.3% of U.S. households do not own a vehicle, with 34.2% owning 2 vehicles, and 17.1% owning 3 or more vehicles. The data for a random sample of 100 households in a resort community are summarized in the frequency distribution
asked by Lesliam 
business statistics
It has been reported that 10.3% of U.S. households do not own a vehicle, with 34.2% owning 2 vehicles, and 17.1% owning 3 or more vehicles. The data for a random sample of 100 households in a resort community are summarized in the frequency distribution
asked by Lesliam 
business statistics
It has been reported that 10.3% of U.S. households do not own a vehicle, with 34.2% owning 2 vehicles, and 17.1% owning 3 or more vehicles. The data for a random sample of 100 households in a resort community are summarized in the frequency distribution
asked by Lesliam 
business statistics
It has been reported that 10.3% of U.S. households do not own a vehicle, with 34.2% owning 2 vehicles, and 17.1% owning 3 or more vehicles. The data for a random sample of 100 households in a resort community are summarized in the frequency distribution
asked by Lesliam