Questions Asked on
September 17, 2011

statistics
72% working women use computers choose 5 at random whats the probility at least 1 does not use a computer whats the probility that all 5 use a computer
asked by max 
physics
You are traveling on an airplane. The velocity of the plane with respect to the air is 180 m/s due east. The velocity of the air with respect to the ground is 40 m/s at an angle of 30° west of due north. 1)What is the speed of the plane with respect to
asked by aaa 
Physics
A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. Assume the plane is traveling horizontally with a speed of 195 km/h (54.2 m/s). Suppose, instead, that the plane releases the supplies a horizontal distance
asked by Bridge 
physics
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 12 m/s at an angle 35 degrees; with respect to the horizontal. Sarah catches the ball 1.5 meters above the ground. 1)What
asked by aaa 
trig
A space shuttle 200 miles above the earth is orbiting the. Earth once every 6 hours. how far does the shuttle travel in one hour? Note the radius of earth about 4000 miles.
asked by Ali 
calculus 3
A rectangular box has length 20 inches, width 14 inches, and a height of 13 inches. Find the angle between the diagonal of of the box and the diagonal of its base. The angle should be measured in radians.
asked by Anonymous 
physics
A package is dropped from a helicopter that is descending steadily at a speed v0. After t seconds have elapsed, consider the following. (a) What is the speed of the package in terms of v0, g, and t? (Use any variable or symbol stated above as necessary.
asked by jim 
physics
A child is in danger of drowning in the Merimac river. The Merimac river has a current of 3.1 km/hr to the east. The child is 0.6 km from the shore and 2.5 km upstream from the dock. A rescue boat with speed 24.8 km/hr (with respect to the water) sets off
asked by aaa 
Physical Science
Would it be more efficient to warm your bed on a cold night with a hot water bottle that contains 1 kg of water at 50 degrees C or with a 1 kg gold bar at 50 degrees C?
asked by Jackson 
physics
A ball thrown straight upward returns to its original level in 2.50s. A second ball is thrown at an angle of 36.degrees above the horizontal. What is the initial speed of the second ball if it also returns to its original level in 2.50
asked by elisa 
Physics
A delivery truck travels 19 blocks south, 25 blocks east and 24 blocks north. What is its final displacement from the origin? Assume the blocks are equal length. Magnitude ?blocks Direction ?(counterclockwise from east is positive) I got the displacement
asked by Anonymous 
Physics
A ball swings in a vertical circle at the end of a rope 1.50 m long. When the ball is 35.9° past the lowest point on its way up, its total acceleration is (22.5 i + 20.2 j)m/s^2. Find radial acceleration?
asked by Zach 
physics
a rock hits the ground at a speed of 10m/s and leaves a hole 25cm deep. what is the magnitude of the (assumed) uniform deceleration of the rock?
asked by yazan 
Statistics
20. A study involves measuring the number of days absent from work for 216 employees of a large company during the preceding year. As part of the results, the researcher reports, “The number of days absent during the preceding year (M = 9.21; SD = 7.34)
asked by Katie 
geometry concepts
determine Which point is between the other two and three points are Collinear mn=32 nl=16 lm=48
asked by ty 
guilford tech
If you have swam one lap in a swimming pool, that means you have swam from one end to the other and back. In 2.5 h, a swimmer makes exactly 26 laps in a swimming pool that is 37 m long. Determine the distance the swimmer traveled, the total displacement of
asked by mary 
chemistry
a 52g piece of ice at 0 degree is added to a sample of water at 6 degree all the ice melts and the temp of the water decreases to 0 degrees how many grams of water were in the sample?
asked by brenda 
physics
The figure above shows a top view of a bar that can slide without friction. The resistor is 6.00 Ω and a 2.50 T magnetic field is directed perpendicularly downward, into the paper. Let l=1.20 m. a. Calculate the applied force required to move the bar to
asked by kait 
physics
( If a person can jump a maximum horizontal distance (by using a 45° projection angle) of 1.33 m on Earth, what would be his maximum range on the Moon, where the freefall acceleration is g/6 and g = 9.80 m/s2?
asked by annne 
trig
An automobile windshield washer 10inches long rotates an angle of 60degrres. If the rubber part of the blade only covers the last 9inches of the wiped, find the area of the windshield cleaned by the wiper.
asked by ALISON 
Science
Hi, I have two questions about biology I need help with. 1) Some questions fall outside the realm of science, which of the following questions could not be answered using the scientific method? A)What is the function of the appendix in human beings? B) Why
asked by Jon 
physics
The coil of the ac generator rotates at a frequency of f =60.0 Hz and develops an emf of 120 V (rms). The coil has an area of A = 3.0 x 10 3 m 2 and consists of N = 500 turns. a. Find the magnitude of the magnetic field in which the coil rotates. b. If
asked by kait 
Science
An animal has the genotype AaBbCcDD. Gene A is on chromosome 1, gene B is on chromosome 2, gene C is on chromosome 3, and gene D is on chromosome 4. What is the probability that this animal will produce ABCD gametes?
asked by Jamie 
chemistry 102
The following decomposition reaction SO2Cl2>SO2 + Cl2 was run in a laboratory. Following data collected: Time(s) Pressure SO2Cl2 (ATM) 0 1 2500 .947 5000 .895 7500 . 848 10000 .803 What is the overall order of reaction?
asked by vika 
statistic
This data shows the final exam scores of 10 randomly selected students and the number of hours they studied for an exam. (hours, scores) (3, 65), (5, 80), (2, 60), (8, 88), (2, 66), (4, 78), (4, 85), (5, 90), (6, 80), (3, 71) Find the equation of the
asked by maria 
math
1)An object is suspended from two points on the ceiling 25cm apart by two pieces of rope of lengths 27cm and 24 if the object exerts from a downward force 200N then find the tension in each rope 2)An airplane heading north at 550km/h encounters a wind of
asked by Abraham 
Algebra
A history test is to have 20 questions in which some are multiple choice and some are essay. The multiple choice questions are worth 4 points each and the essay questions are worth 8 points each. if the test has a total of 100 points, how many of each type
asked by Kay 
science
The current classification system used by biologists is: A)Complex and unchanging. b)universally accepted by all biologists c)based on four generalized types of living organism: the bacteria, archaea, eukarya and protista d) updated and revised whenever
asked by Jon 
physics
Ted Williams hits a baseball with an initial velocity of 120 miles per hour (176 ft/s) at an angle of è = 35 degrees to the horizontal. The ball is struck 3 feet above home plate. You watch as the ball goes over the outfield wall 420 feet away and lands
asked by aaa 
Chemistry 1
What answer should be reported, with the correct number of significant figures, for the following calculation: (965.43 x 3.91) + 9413.4136 I got 13189 as an answer. Can someone let me know if this is right?
asked by James 
math
Graph the equation by completing the table and plotting the points. You may use Excel or another webbased graphing utility. a) y = 3x  x2 Use the values of x provided in the table to find the y values. Show your work.
asked by shirley 
Finance
Dave takes out a 30year mortgage of 200000 dollars for his new house. Dave gets an interest rate of 16.8 percent compounded monthly. He agrees to make equal monthly payments, the first coming in one month. After making the 68th payment, Dave wants to buy
asked by Katy 
Chemistry 1
What answer should be reported, with the correct number of significant figures, for the following calculation: (965.43 x 3.91) + 9413.4136 I got 13189 as an answer. Can someone let me know if this is right?
asked by James 
math,word problem
Twice the square of a certain whole number added to 3 times the number makes 90.Find the number.
asked by Raha 
physics
A 4.5 "kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.55 m above the counter?
asked by kaira 
Physics
A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. Assume the plane is traveling horizontally with a speed of 195 km/h (54.2 m/s). How far in advance of the recipients (horizontal distance) must the goods be
asked by Bridge 
college physics
A 4.5 cm long insect is perpendicular to the optical axis of a thin lens; the bug is 5.4 cm away from the lens. The lens forms an inverted image of the insect which is 0.9 cm long on a screen behind the lens. a. How far behind the lens is the screen? b.
asked by william 
CRT 205
Can someone review this and let me know if it is acceptable?? This class was so hard and it has been all i can do to pass it! Here is the article i chose Addiction Is a Choice, Not a Disease Addiction , 2009 Content Level = Intermediate Dale Netherton,
asked by Lindsay 
AP English
Which of the following is a factor that can help account for the great difference between Old English as we know it and Middle English as we know it? Although there were possibly hundreds of dialects of both languages, we really only have a written record
asked by Anonymous 
geography
How imoortant is trade to Canada? Consider the impact on our lifestyle, jobs, and economy.
asked by michelle 
English(Urgent)
I need help!!! I am suppose to give an opinion on "No Man is an Iland": "any man's death diminishes me, because I am involved in mankind." If people died somewhere does it affect in other place in the world because of this loss. This is my answer: Yes, it
asked by Anonymous 
math
The tangent from point T touches a circle at R.If the radius of the circle i 3cm and T is 5cm from the center of the circle.Calculate/TR/.
asked by Raha 
chem da
convert 7.5g/cm cubed to kg/m cubed? using dimensional analysis
asked by Skylar 
English
I left out the following sentences. Thank you very much! 1) Mary I (Tudor 15531558) was the daughter of Henry VIII and Catherine of Aragon. She succeeded his halfbrother Edward VI, the son of Henry VIII and his third wife Jane Seymore. 2) She was one of
asked by Henry2 
Chemistry
Use Equation 7.1 and assuming that core electrons contribute 1.00 and valence electrons contribute nothing to the screening constant, S, calculate Zeff} for these two ions. Express your answers as integers. Enter your answers numerically separated by a
asked by Caitlin 
The Short Story Part 2
In a "Pair of Silk Stockings",the silk stockings are a symbol of? A.Mrs. Sommers's inability to handle money. B.Mrs. Sommers's lack of concern for her children. C.Mrs. Sommers's selfish needs. D.Mrs. Sommers's desire for attention.
asked by Angie 
Calculus
I'm trying to finish up my precal homework and I am stuck on 2 problems... ***determine the intervals over which the function is increasing, decreasing, or constant*** 32. f(x)=x^24x 33. f(x)=√x^21 (that's square root of x^21) thank you so much for
asked by Cris 
World History
How did gandhi's salt march illustrate his philosophy of civil disobedience? 1. the march began civilly with speeches by gandhi and other leaders, who pledged to fast from eating products made with slt for 90 days 2. the march was against the civil laws
asked by james to henry 
child development
I need to know the approach to research(research design) of the psychosocial theory, social learning theory,cognitivedevelopment theory and sociocultural theory of child development. I cannot find this info anywhere
asked by Bubba 
math
writing numbers in standard form ex 624
asked by alyssa 
science
two words that describe the u in nucleus
asked by Anonymous 
english
I need help writing a paper for my written analysis course. It is a paper to be written on, "How I solved a problem." I have to incorporate critical and creative thinking with this paper.
asked by Keri Ann 
health
i need some sites on then few questions i cant find anything on this can someone help me ?.... thanks! Government role and level of effect: national, state, and local Identify the government structure. Discuss the function and role for this issue
asked by bobbi 
Physics
A projectile is shot from the edge of a cliff h = 225 m above ground level with an initial speed of v0 = 155 m/s at an angle of 37.0° with the horizontal a. Determine the time taken by the projectile to hit point P at ground level. b. Determine the range
asked by Bridge 
PHYSICS
Two trains, each having a speed of'34 km,/h, are headed at each other on the same straight track. A bird that can ﬂy 58 km /h ﬂies oﬁ" the front of one train when they are 102 kmapart and heads directly for the other train. On reaching theother train
asked by KKK 
chemistry
Name a reagent that will react with a) copper(II)hydrooxide and aluminium hydroxide b)aluminium hydroxide but not copper(II)hydroxide 2)suggest how you could separate a mixture of silicon(IV) oxide and magnesium oxide 3)Name a reagent that could react with
asked by sahar 
arithmetic
first term and larst term of a geometric progression is 42.if the forth term is greater than the second term by 168, find the first term.the forth term.
asked by charles 
Physics
A stone is thrown from a cliff top with a vertical velocity of 50 m/s and horizontal velocity of 20 m/s. What is its resultant velocity? At what angle above the horizontal is it thrown?
asked by Anonymous 
business
Which stage in the consumer purchase decision process suggests criteria to use for the purchase, yields brand names that might meet the criteria, and develops consumer value perceptions
asked by tiffay 
Goverment
with the improvements in transportation and communication, would the original Articles of Con. work for all 50 states today? explain your reasoning.
asked by asian boy 
PreCalculus
I'm trying to finish up my precal homework and I am stuck on 2 problems... ***determine the intervals over which the function is increasing, decreasing, or constant*** 32. f(x)=x^24x 33. f(x)=√x^21 (that's square root of x^21) thank you so much for
asked by Cristina 
Biology
A student claims the probability a human sperm will receive all chromatids of maternal origin is 50 %. Explain why she is wrong.
asked by Ericka 
University Math
If f (x) = (x^2+5x+2)^2, find f'(x). Find f'(5). Please show your work and explain it so I can understand how to solve this. Thanks
asked by Mary 
English
Could you please check the following sentences, please? Thank you very much. 1) enry VII was the first king of the Tudor dynasty. His foreign policy aimed at making England’s tradition position stronger. 2) He also laid the foundations of the English
asked by Henry2 
Math
Find the coordinates of the xintercept. x+5y=15
asked by Betty 
7th grade social studies
Fill in this blank The number of representatives for each state is determined by _______________. Answer this question What is the system of government established by the Constitution, which gave some powers to the national government and reserved other
asked by saranghae12 
7th grade social studies
what are the synonyms of these words? executive ratified confederation independent separation supreme legislature constitution PLEASE HELP!! THANK YOU!!!!!
asked by poprocks! 
Algebra
Find the vertex and the axis of symmetry for the parabola with the given equation y=5x230+47....
asked by Gwendolyn 
Physics
The acceleration due to gravity on the moon is about one sixth its value on earth. If a baseball reaches a height of 62 m when thrown upward by someone on the earth, what height would it reach when thrown in the same way on the surface of the moon? Answer
asked by Joe 
Physics
An airplane of mass 2800 Kg has just lifted off the runway. It is gaining altitude at a constant 2.3 M/s while the horizontal component of its velocity is increasing at a rate of 0.86 M/s2. Assume g= 9.81 M/s2. (a) Find the direction of the force exerted
asked by John 
Biology
A student claims the probability a human sperm will receive all chromatids of maternal origin is 50 %. Explain why she is wrong.
asked by Ericka 
Algebra 2
[3y+6]>or equal to 21 If you could put this in set notation, graph, and interval notation that would be great. Thanks
asked by Brandon 
Math
I have math HW and these are the questions i wasn't aware of how to answer... please help. a)Prove that 4xy1=0 is parallel to y=4x5 b)Show that the points A(3,1), B(5,2) and C(11,5) are collinear c)Show that the lines y=2x4 and x+2y10=0 are
asked by Crissy 
trig
Given the radius of a wheel is 12inches and the angular speed is measured to be 3pie/4 radiant per second, find the linear speed of the piece of gum stuck to the where. Give both an exact answer. And a decimal answer rounded to 4 decimal places.
asked by ALISON 
statistics
Let a random variable be distributed as shown below X=x : 0,1,2,3,4,5,6 P(x): .1 .09 .2 .15 .16 .2 (a) Find the probability p(6) (b) Find the probability P(3< X < 5) (c) Find the probability P(X < 4) (d) Find the probability P(X > 2)
asked by kim wallace 
physics
A car comes to a stop for a stop sign in 4.6 seconds. If it was initially traveling at 27.5 m/s, how much space did it take for the car to stop?
asked by Steve 
physics
An electron travels 7.63 m in 7.33 × 10−8 s. How fast does it travel? Answer in units of cm/s
asked by shannon 
Math
I am stuck on doing this math problem written on a sheet of paper. (eightyone thousand minus fiftyfive thousand, four hundred fiftysix) It mas to be done manually, without a calculator.
asked by Alex L. 
Geometry
The equation T = 0.03c + 0.05b relates the numbers of cans c and bottles b collected in a recycling rally to the total dollars T raised. How many cans were collected if $147 was raised and 150 bottles were collected? Solve the equation for c and justify
asked by David 
PreCalculus
I'm trying to finish up my precal homework and I am stuck on 2 problems... ***determine the intervals over which the function is increasing, decreasing, or constant*** 32. f(x)=x^24x 33. f(x)=√x^21 (that's square root of x^21) thank you so much for
asked by Cristina 
Gov
what was the overall problem with the Articles of Con.? give 4 examples that illustrate the problem
asked by Mike 
physics
A bus is pushed forward and released at = 3.5 with a speed of 1.0 . It rolls at a steady speed for 1.2 , then one wheel begins to stick. The bus comes to a stop 3.4 from the point at which it was released.
asked by smarth 
Chemistry   Hydrocarbons
Name the following hydrocarbons. A) CH3CH2CHCH2CH2CH3  CH3 I don't know if this will show up correctly after I post. But the CH3 at the bottom is supposed to be under the CH. I don`t get how to name. I counted up all the hydrocarbons, and I came up
asked by Anonymous 
Math
How long will it take for $100.00 compounded daily at 1.5 % to become $1000.00
asked by Peggy 
hsm
. Explain the risks or benefits that the organization would face by attempting to capitalize on the opportunity.
asked by Anonymous 
Politics
Hello! I have another question about Syria.. So I'm trying to write a congressional speech about why the UN should go and help Syria. I need to find 3 reasons to write about, but I only have 2 at the moment. My first reason is that the President of Syria
asked by michelle 
Arabic
I am trying to write my birthday in Hindu Arabic. it is 10121961. Can you help me figure it out. Thank you.
asked by ncc 
psychology
Jiskha experts, can someone please explain to me what is the premise of business psychology?
asked by Sharon 
Biology
why correcting lens is not used so often in microscope ?
asked by Mr.Green 
statistics
Pleas HeLp!!!!!!!!!! A random sample of the test scores of 100 applicants for college entry at a large junior college showed a mean score of 72.6. Determine a 99%, 95%, and 90% confidence interval for the m mean score of all applicants at the junior
asked by courntey 
Math
What is the decimal notation for 8 3/6?
asked by Anonymous 
psychology
Is the “reality” assumed by cognitive theorists relative or absolute? Why?
asked by Stacey 
math riddles
714457=
asked by hannah motanna 
Art
What elements of painting are important to Renaissance artists?
asked by Becca 
scienceelectromagnetism
Find the current density J at (2 m, 1 m,3 m) if H=2xy^2k Am^1.
asked by justy 
physics
The magnetic field shown in the figure decreases from 1.0 T to 0.4 T in 1.2 s. A 6.0 cm diameter loop with a resistance of 0.010 W is perpendicular to the field. a. Find the average emf induced in the coil during this time. b. What is the size and
asked by kait 
gcse geography
i need to do a case study on France and i have several questions i need help with.Do you know of any good websites that can help me. Some of the questions i need to answer and are struggling with are: *Which other capital cities/major population centres
asked by xavier 
scienceelectromagnetism
At a particular instant in the,in a region of space where E=0 and B=3i Wbm^1 , a 2 kg particle of charge 1 C moves with a velocity of 2ims^1.What is the particle's acceleration due to magnetic field?
asked by justy 
scienceelectromagnetism
how do we calculate the current density given the magnetic field?
asked by justy 
Science
What would happen to the amounts of solar radiation reflected and absorbed if a large aount of light colored dust was added to the air
asked by Chandler 
Physics
I have a projectile motion question. If let's say a cannon which was placed on a moving cart with negligible friction projects a cannonball straight up in the air where will it fall? Would it be behind the cannon, on the rider or fall straight down back
asked by Jen 
College Math
r^2+10r23=0 I used the quadratic formula and I got a 5+2√12 However the real answer is 5+4√3 What am I doing wrong?
asked by HM 
Geo
Which ocean separates Canada from China?
asked by Vanessa 
physics
A 8.0×10−2 arrow hits the target at 25 and penetrates 3.8 before stopping. What average force did the target exert on the arrow?
asked by Anonymous 
MATH
28
asked by DESIREE 
math
use the digits 0,2,4,6,8 exactly once to form a 3digit and 2digit NEGATIVE intfer that will give you the LEAST possible sum when the two intergers are added together.
asked by tina 
Management & Economics
a producer of light bulbs claims to have the folllowing production function: Q=10L*G. a) what is the marginal product of labor? or glass? b)Draw the relavant isoquant map and isocost line if the cost of labor is $4 per workhour and the cost of glass is $4
asked by Lisel 
studying for chem 2
My professor really likes conceptual problems and that is what we will be tested on. How can I practice concept questions??
asked by Lauryn 
Management & Econ
a) Explain why a short run average cost curve only touches the long run average cost curve at one point on the long run average curve. b) Define clearly the concept of returns to scale c)What are the two causes of the region of economics of scale for a
asked by Lisel 
Physical Science
What is the Celsius equivalent of a temperature of 160 degrees F?
asked by Jackson 
science
Which of the following would you most likely find surviving ina boilinghot spring? A) An archaean b)bacteria C)a eukaryote d)none of the above
asked by Jon 
statics
Ïƒ = sqrt [ Ïƒ2 ] = sqrt [ Î£ ( Xi  Î¼ )2 / N ]
asked by Anonymous 
cal
The force on an object is F=−20j. For the vector v=−5i−4j, find: (a) The component of F parallel to v: (b) The component of F perpendicular to v: The work, W, done by force F through displacement v:
asked by Anonymous 
Art History
How does Perugino's work represent the ideas of Humanism and the Renaissance?
asked by Becca 
algebra
What are the pairs of numbers on a graph which represent the equation of d=3.5t+50?
asked by stevan 
Math
a rectangle is to be fenced with a 100 meter wire. Find the dimensions of the lot so that the area is at maximum
asked by Paulina 
physics
A coil of wire consists of 20 turns, or loops, each of which has an area of 1.5 x 103 m 2. A magnetic field is perpendicular to the surface of each loop at all times, so that Ø = Øo = 0°. At time to = 0s, the magnitude of the field at the location of
asked by kait 
science
calculate pressure on surface of tank of 3*2*2 cm if it is half filled
asked by adomeo 
social studies 7th
I am checking my child's homework. Can you help? During what years was the Civil War fought? My child's answer is The Civil War was fought over the span of four years. I really do not think this is the answer the teacher will be looking for. What do you
asked by Mom needs help! 
PHYSICS!
Orville walks 270 m due east. He then continues walking along a straight line, but in a different direction, and stops 230 m northeast of his starting point. How far did he walk during the second portion of the trip and in what direction? Please I need a
asked by Unknown 
Chemistry
If I have a bottle containing 12 ozs (355mls)and the alcohol is 48% by volume, how many mls of alcohol arer in the solution?
asked by Sandy 
social studies 7th
Confused! Who were the presidents of the United States and of the Confederate States of America? My child has as an answer The Union and the Confederacy each had a president. The president of the Union was Abraham Lincoln, while Jefferson Davis was the
asked by Mom needs help! 
language arts
Some visitors to the park enjoy rock climbing others prefer kayaking.
asked by melissa 
Physics
A 29 kg sign is supported by a vertical chain at each end. A strong wind blows and the chains make a 30 degree angle with the vertical. What force does each chain exert? Thank you for answering~
asked by Anonymous 
Math
Given the arthmetic sequence 2 old no 1 all over 2, 1,...., 71, find the common difference.
asked by Geometric 
Math
A winner of the Florida Lotto has decided to invest $500,000 per year. Two possible considerations are an international stock with an estimated return of 12% and a mutual fund with an estimated return of 6%. The estimated risk index for the international
asked by Nica 
algebra
translate the sentence to an algebraic inequality. The height of the members of the basketball team is at least 79 inches
asked by babygirl 
statistics math
two un biasedtetrahedral dice each have four faces number 1,2,3 and 4. the two dices are thrown together and the sum of the numbers on the faceson which they land is noted. Find the expected number of occasions on which the sum is 7 or more when the dice
asked by sam 
Maths
if the quardilateral ABCD is a //gm what is the value of x? if A is 3y' B is (2y 5)' C is (3x +3)'
asked by Ayushi