Questions Asked on
August 19, 2010

physics
A 0.060 kg tennis ball, moving with a speed 2.50 m/s, collides head on with a 0.090kg ball initially moving away from it at a speed of 1.15 m/s. Assuming a perfectly elastic collision, what are the speed and direction of each ball after the collision?
asked by joy 
The elements and Principles of Design
CAN SOMEONE PLEASE CHECK MY ANSWERS. (MY ANSWERS ARE AT THE BOTTOM...) 1. Which one of the following factors is one of the principles of design? A. Form C. Pattern B. Color D. Balance 2. Of the following expressions, which best describes the concept of
asked by Anonymous 
college physics
A 0.25 kg skeet (clay target) is fired at an angle of 30 degrees to the horizon with a speed of 25 m/s. When it reaches the maximum height, it is hit from below by a 15 g pellet travelling upward at a speed of 200 m/s. The pellet is embedded in the skeet.
asked by jen 
physics
A spring with k = 53 N/m hangs vertically next to the 15 cm mark on the ruler. If a 2.5 kg mass is now attached to the end of the spring, where will the end of the spring line up with the ruler marks
asked by kathy 
statistics
Given the following scatter diagram , the sample correlation coefficient r: Has a positive linear correlation Has a negative linear correlation. Has little or no correlation. Looks close to + 1.00
asked by Karen 
Math Calculus
Three sides of a fence and an existing wall form a rectangular enclosure. The total length of a fence used for the three sides is 240 ft. Let x be the length of two sides perpendicular to the wall as shown. Write an equation of area A of the enclosure as a
asked by Livia 
physics
[20 pts] A 2.00 kg block is pushed against a spring with negligible mass and force constant k = 400 N/m, compressing it 0.220 m. When the block is released, it moves along a frictionless, horizontal surface and then up a frictionless incline with slope 37
asked by joy 
physics
You drop a ball from a height of 2.0 m and it bounces back to a height of 1.5 m (a) What fraction of its initial energy is lost during the bounce? (b) What is the ball’s speed just at it leaves the ground after the bounce?
asked by jen 
Math
Question: A tunnel with a parabolic arch is 12 m wide. If the height of the arch 4 m from the left edge is 6 m, can a truck that is 5 m tall and 3.5 m wide pass through the tunnel? Justify your decision. I drew the graph of the arch with xintercepts (0,0)
asked by Emily 
chemistry
When 10.0 mL of 0.012 M Pb(No3)2 is mixed with 10.0 mL of 0.030M KI, a yellow precipitate of PbI2(s) forms. a. Calculate the molarity of [Pb2+] b. calculate the initial molarity of [I] c. On measuring the equilibrium concentration of [I] it cam out to be
asked by Anonymous 
chemistry
what mass of a 15% (m/m) NaOH solution contains 125 grams NaOH?
asked by Anonymous 
Programming
Submit pseudocode and a flowchart for the following programming exercise: Fat Gram Calculator Design a program that asks for the number of fat grams and calories in a food item. Validate the input as follows:  Make sure the number of fat grams and
asked by johnny 
Algebra 2
HELP!!! 1. Having a xintercept of 4 and parallel to the yaxis. How do i write this equation in standard form?
asked by Jessica 
physics
A 0.25 kg skeet (clay target) is fired at an angle of 30 degrees to the horizon with a speed of 25 m/s. When it reaches the maximum height, it is hit from below by a 15 g pellet travelling upward at a speed of 200 m/s. The pellet is embedded in the skeet.
asked by joy 
math
graph the equation by plotting the points: 355y=0 i know how to put the solutions on the graph. i am stuck on this equation. i think x=0 but i can not figure for y. please help me and show me the steps to solve this.
asked by barb 
science
Geologists have divided the history of the earth into four different eras. Which era below is not one of the four? a) Mesozoic Era b) Cenozoic Era c) Precambrian Era d) Stone Era e) Paleozoic Era Just need to know if my answer or right or wrong. Thanks! :)
asked by ant 
Physics  Projectile Motion
While Hiking in the wilderness, you come to the top of a cliff that is 60.0m high. you throw a stone from the cliff, giving it an initial velocity of 21m/s at 35deg above the horizontal. How far from the base of the cliff does the stone land? (85m) I tried
asked by Shaila 
Math
Choose the one alternative that best completes the statement or answers the question. Solve the problem. Assume that simple interest is being calculated in each case. Round your answer to the nearest cent. Martin takes out a simpleinterest loan at 7.5 %.
asked by Alex 
physics
A 0.25 kg skeet (clay target) is fired at an angle of 30 degrees to the horizon with a speed of 25 m/s. When it reaches the maximum height, it is hit from below by a 15 g pellet travelling upward at a speed of 200 m/s. The pellet is embedded in the skeet.
asked by riley 
science
ka value for acetic acid,aluminium nitrate,zinc nitrate,ammonium nitrate and sodium dihydrogen phosphate?
asked by cf september 
Math
A hemispherical bowl with a 30cm radius has some water in it. The water is 15 cm deep. Find the volume of water, to the nearest cubic cm.
asked by John 
Physics
How much energy is need to place four positive charges, each of magnitude +5.0 mC, at the vertices of a square of side 2.5 cm?
asked by Anonymous 
Chemistry
To balance the oxygen and hydrogen for a redox reaction that takes place in acidic solution, it is necessary to use which of the following?A. H2O and H+ B. H2O only C. H2O and OH D. OH only
asked by Jarred 
US History: Ms. Sue
"The Interstate Commerce Act of 1887, establishing the Interstate Commerce Commission (ICC) had been an early effort to regulate the industry; but over the years, the courts had sharply limited its influence."  wiki Would the Interstate Commerce Act be
asked by Amy~ 
English
I need some help with picking out adjectives and adverbs in these movie review examples. 'Toy Story 3': Alternately affecting, hilarious and heartbreaking and the most original prisonescape movie ever made. A worthy finale to a fantastic franchise. It's
asked by confused by adverbs and adjectives 
math
how do you find sin7x/4x when lim x goes to 0 the answer is 7/4
asked by Jin 
SCIENCE
The earth revolves around the sun, and the moon revolves around the earth. The moon is held in orbit by the earth's_________. a) regression b) revolution c) gravity d) resolution Just need to know if my answer or right or wrong. Thanks! :) C
asked by ant 
math
A leaky faucet fills a 100 millimeter cup in 10 minutes. 1.how much water is wasted in a day?a week?a non leap year? 2.How long does it take to waste a kiloliter of water? (hint:1 kiloliter=1000000 milliliters)
asked by bryce 
Physics
A 8.1 kg stone is at rest on a spring. The spring is compressed 12 cm by the stone. The stone is then pushed down an additional 27 cm and released. To what maximum height (in cm) does the stone rise from that position?
asked by Liz 
Chemistry
What would happen if you insert an iron nail in the zinc nitrate solution? Explain and write the reactions that take place.
asked by Anonymous 
college
Construct a frequency distribution table for the following scores. Include columns for proportion and percentage in the table. Scores: 5, 7, 8, 4, 7, 9, 6, 6, 5, 3 9, 6, 4, 7, 7, 8, 6, 7, 8, 5
asked by Kelly 
math
The rentastall horse barn has stalls for 1000 horses. Forty percent of the stalls are for ponies. On Tuesday, there were 200 ponies and a bunch of quarter horses at the horse barn. The horse barn was 75 percent full. hOW MANY QUARTER HORSES WERE IN THE
asked by tom bleyu 
Algebra I
Two airplanes start at the same time and fly toward each other from points 1000 km apart at rates of 420 km/h and 330 km/m . After how many hours will they meet?
asked by stephaine 
math
I have 10 boxes and 44 marbles .Can I put my marbles in the boxes so that each box contains a different number of marbles?
asked by karen 
Physics
How much energy is need to place four positive charges, each of magnitude +5.0 mC, at the vertices of a square of side 2.5 cm?
asked by Anonymous 
Math
(a) A sphere of radius 4 in is inscribed in a cone with radius 6 in. How tall is the cone? (b) A cone with radius 4 in is inscribed in a sphere of radius 6 in. How tall is the cone? Show that there is more than one answer to this question.
asked by John 
Statistics
Assume the body temperature of healthy adults are normally distributed with a mean of 98.2F and a standard deviation of 0.62F. If you have a body temperature of 99.00F, what is your percentile score? Convert 99.00F to a standard score(or a zscore). Is a
asked by Lindsy 
5th grade
Well,I have a science question it says :If you have 3 liters of air in your lungs and 2/10 of that is oxygen,how many milliliters of oxygen are in your lungs?
asked by peri 
internationa business operations management
As the production manager for an electronic circuit company you have encountered the following situation. Part 1 A process for producing electronic circuits has achieved very high yield levels. An average of only 10 defective parts per million is currently
asked by lisette 
Physics  Projectile Motion
During baseball practice, you go up into the bleachers to retrieve a ball. You throw the ball back into the playing field at an angle of 42deg above the horizontal, giving it an initial velocity of 15m/s. If the ball is 5.3m above the level of the playing
asked by Shaila 
math
what is the sixth term in this sequence 83,77,71,65
asked by isabel 
Psychology
• Find a peer reviewed article which discusses the effects of optimism on physical and psychological health. • Write a 1400 to 1600word paper summarizing the article and stating your opinion on the validity of the study or studies.
asked by dave 
Chemistry
What would happen if you insert an iron nail in the copper solution? Explain and write the reactions that take place.
asked by Anonymous 
Math
The points (2, 3,6) and (6, 3, !2) both lie on the sphere x 2 + y 2 + z 2 = 49. What is the shortest path between them if travel is restricted to the surface of the sphere?
asked by John 
science
________ is the study of the earth. Just need to know if my answer or right or wrong. Thanks! :) Geology (Earth Science)
asked by ant 
statistics
using the 68 9599.7 rule: Assume that a set of test scores is normally distributed with a mean of 100 and a standard diviation of 20. Use the 689599.7 rult to find the following quantities: percentage of scores less than 100 relative frequency of
asked by margaret 
Physics
A uniform magnetic field of B = 3x10−4 T points in the positive x direction. A charge of 6 μC is fixed at the origin and a charge of −3μC is fixed at (2,0) on the x axis. A charge of 4 μC travels on the y axis at 5.0 x 106 m/s. Neglecting gravity,
asked by thegame 
MATH
An experiment has three possible outcomes: A, B,and C. If P(A)=P(B) and P(C)=2P(A) what is the probability of each event
asked by Anonymous 
science
In 1912, Alfred Wegener discovered and explained the movement of continents, a theory he called"_____." a) plate movement b) continental drift c) moving continents d) shifting plates Just need to know if my answer or right or wrong. Thanks! :) b
asked by ant 
math
Figure is triangle c is biggest side, a and b are same size 19. In figure4, compute c if a = 3 and b = 2. 20. In figure4, compute b assuming 27a= and c =2b. ()
asked by Anonymous 
calculus
f(x) = (x+2)/(x+6) What is f^(1)(6)? (what is f inverse of 6) I found f' which was [(x+6)(x+2)]/(x+6)^2 I set the function equal to 6 and found x to be 30/7. Used the formula to find inverse function: 1/f'(f^(1)(6)) So I replaced f^(1)(6) with
asked by Pegs 
Chemistry
Under the symbol 2so3 is that the same as 2 molecules of so3?
asked by cathrine 
english/reading.
I can't find an actual summary of the picture bride by yoshiko uchida. All that comes up are sites with little excerpts of summarys and if you want more of it you have to pay. Can someone please help me?
asked by stacy. 
science
The deepest layers of the earth is called the inner______. Just need to know if my answer or right or wrong. Thanks! :) Inner core.
asked by ant 
math
the speed of a train a is 6 mph slower than the speed of train b. train a travels 220 miles in the same time it takes train b to travel 250 miles. find the speed of each train
asked by summer 
Internet
How did a website like YouTube become so popular? Over a million people use it!
asked by AL 92 
science
the existence of background radiation is offered as evidence supporting the steady state theory or big bang theory
asked by Anonymous 
science
At the beginning of the____Era, the earth had no crust. Just need to know if my answer or right or wrong. Thanks! :) modern era
asked by ant 
math
how does secx(tanx + tan^2x sec^2x) simplified to sec x (tanx 1)?
asked by Jin 
algebra
Jane is a saleswoman. She is paid a base salary of a month plus a commission on the sales she makes. What was her sales amount last month if she earned a total of ?
asked by darla 
college strength of material
i have initial and final gauge length and diameter and also have max load. Now i have to draw stress strain diagram. I know how to draw that graph but i a not provided with failure load or yield load so i am not sure how to graph. We had performed
asked by Nick 
science
The moon revolves around the____. Just need to know if my answer or right or wrong. Thanks! :) Earth
asked by ant 
childcare
Ms. Sue I observe that you are answering questions at this time. Would you be kind enough to look over my questions posted today. August 19,2010 at 12:07 p.m. Thanks
asked by action 
English
Write five sentences about the role of education in successful financial planning, in which you correctly use a different verb tense in each sentence and identify verb tense used
asked by Anonymous 
cultra
• • Write a 1,400 to 1,750word autobiographical research paper analyzing the influences of race as it relates to your community. In your paper, write your firstperson account of how human interactions in your community have been racialized. For the
asked by fee 
Math
A ball rolls into a corner of a room, where it touches both walls (and, obviously, the floor). A larger ball rolls into the same corner so that it touches both walls and the first, smaller ball. The small ball has a radius 1 inch. What is the radius of the
asked by John 
Math
the question is "The track at Beck's is rectangualar. The dimensions of the inner playing field are 200 by 80 feet. The track is 13 feet wide on all sides . How many feet will Becky walk if she follows the outside edge of the trck?" How do you work that
asked by Ao 
415
What is a High Performance Team (HPT)? can someone give me a few examples.
asked by meshelle 
MAT/117 Appendix E
Answer the following questions. Use Equation Editor to write mathematical expressions and equations. First, save this file to your hard drive by selecting Save As from the File menu. Click the white space below each question to maintain proper formatting.
asked by Dee 
Geometry
An equation using the numbers 2,4,6 and 8 to get the answer to be nine. You may use multiplication, division, subtraction, addition, and parenthesis. im so stumped.
asked by Natalie 
government
write several paragraphs stating advantages and disadvantages to the unitary, confederate, and federal systems of government.
asked by Brittany 
economics
The mortex company assmebles
asked by haynaku 
English
Colors of Our Friendship Friendhip is full of colors; Red is action; It makes us feel active. Green is freshness; It makes us to live harmoniously with others. Gray is gentleness; It makes us feel generous to others. (Is the poem grammatical?)
asked by rfvv 
MATH
Find the zscore related to the raw score, mean, and standard deviation as follows. Assume a normal probability distribution.
asked by Anonymous 
college
Y=1777x+27,153 Y= g\un deaths in United States Xyears after 2000 x=0
asked by Georgetta 
8th grade
A leaky faucet fills a 100 millimeter cup in 10 minutes. 1.how much water is wasted in a day?a week?a non leap year? 2.How long does it take to waste a kiloliter of water? (hint:1 kiloliter=1000000 milliliters)
asked by timmy 
biology
explain why scientists look at the health and population of organisms to measure to effects of pollution in an ecosystem instead of directly measuring the concentration of chemical in the environment.
asked by amelia 
math
Write the statement indicated. Write the negation of the following. A happy face is a smiling face.
asked by Luke 
ALGEBRA 1
Consider the equation 4x + 6y = 48. Part 1: On your own paper, graph this equation using the slopeintercept method. In the space provided, explain, in words, each step of the procedure you used. Make sure to use COMPLETE SENTENCES IN PERFECT GRAMMER Part
asked by TOBIAS 
math
Write the decimal representing 8/9. Explain your reasoning.
asked by A 
algebra
convert to decimal notation 8.87*10^7
asked by jess 
MATH
If P(A)=3/5 what are the odds in favor of A occurring?
asked by Anonymous 
math
charlotte has 3 times as many pencils in her schoolbox as rebecca.together they have a total of 24 pencills. how many pencils does rebecca have?
asked by charnette 
hrm 240
need help it says to naming one internal and three extrnal ways that i could recruit for the job the job i chose is bank manager and what are the advantages and disadvantages to this is? what i want to know is what is internal and external ways?"
asked by me 
math absolute values
please solve this: {3z} for z=62
asked by bravo 
US History
For the "Square Deal" what were key policies? Pure Food and Drug Act Meat Inspection Act Interstate Commerce Commission ...
asked by Amy~ 
MATHS
5 women complete half a job in 15 days. How long would it take 3 women to do the whole job? Thanks for your help
asked by BRYAN 
science
A falling star is really a ______burning up in the atmosphere of the earth. Just need to know if my answer or right or wrong. Thanks! :) meteor
asked by ant 
biology
Are antibody synthesized by 1. B lymphocytes 2. Phagocytes 3. Helper tlymphocytes 4. Killer tlymphocytes Thanks, Cathrine
asked by cathrine 
English plz help me .
Please help me in english .I have to submit this essay very soon.plz Throughout the history, man has always been obsessed for the immortal life .Gilgamesh was one of them. Who has desire for immortal life. He was a king of urak. He was powerful and full of
asked by shan 
statistics
A normal distribution is any distribution that is not unusual. True or false?
asked by Brenda 
Math
If ABCD is an arbitrary convex quadrilateral, then the area enclosed by ABCD is described by the formula (1/2) AC*BD*sin(theta) , where ! is one of the angles formed by the intersecting diagonals AC and BD. Prove this formula, and explain why it does not
asked by John 
math
What is the P (A) if we know that the odds in favor of A occurring are 3 to 4?
asked by Anonymous 
child care
1. A main source of fat and saturated fatty acids in children's diet is A> meat B. candy C. whole milk D. french fries (My answer is D) 2 when a child demonstrates an inability to leap over a barrier, his teacher checks to see if he has mastered the skills
asked by action 
Algebra
An object weighs 10 lbs and is 200 miles from the center of the earth. Solve for the constant
asked by Candace 
Chemistry
Sorry. What I meant was: How do we improve the efficiency of Flash Column Chromatography?
asked by Alan 
SCIENCE
The earth is a______.It has four different layers, some thicker than others.? a) spiral b) rotunda c) sphere d) globule Just need to know if my answer or right or wrong. Thanks! :) C
asked by ant 
science
The Paleozoic Era is noted for which two changes? a) rocks were formed b) the earth heated up c) people appeared on earth d) mountains were formed Just need to know if my answer or right or wrong. Thanks! :) d
asked by ant 
MATHS
The sum of three consecutive multiples of 3 is 36. The smallest of the three will be.....? answer is 9
asked by DONNA 
English
Life is full of colors. Red is love; 1)It comes from our hearts. Blue is sadness; 2) It falls from our eyes. (In the poem, what does each 'it' refer to?)
asked by rfvv 
science
A total solar eclipse means that no sunlight reaches a certain area on earth. true false Just need to know if my answer or right or wrong. Thanks! :) false
asked by ant 
soc402
Compare and contrast the roles the prison system, the family, and the social stratification system play
asked by rusty 
Math
If the graph y = 4sin(bt) repeats itself every 30 degrees (and not more frequently), find the value of b.
asked by John 
MATH
What percent of heights of adult males in the normally distributed general population have zscores between 1 and +1?
asked by Anonymous 
MATH
if P(B)=1/3 compute P(not B)
asked by Anonymous 
English help
it is second paragraph. I want to tell you English is my second language.I try my best to do it in right way . After the death of Enkidu .He asks him self does this mean I have to die too? This thinking changes his direction. It is not doubt to say that
asked by sha 
Chemsitry
How do we improve the efficiency of Column Chromatography?
asked by Alan 
Business Economics
"How do I find out which manufactures in the US sell the most Oxygen Concentrators?"
asked by Claudia 
science
When any spot on the surface of the earth faces the sun, that spot is dark it is night. true false Just need to know if my answer or right or wrong. Thanks! :) false
asked by ant 
8th grade math
12x+3x=15x use the distributive property to show that each statement si true.
asked by Anonymous 
math
3% of $1,120,000
asked by Anonymous 
Health Care Fnancial Accounting
the local school system asks to submit a proposal to do preemployment physicalsfor 60 bus drivers. What financial or accounting informaton is needed to submit the proposal? what shall I charge the school system?
asked by Jerry 
college
Describe in Hamlet, Prince of Denmark the representative of the literature in the culture from which it comes.
asked by Moses 
science
Very hot, liquid iron and sulfur are found 1,800 miles deep in the earth in the _____.? a) inner core b) mantle c) outer core d) crust Just need to know if my answer or right or wrong. Thanks! :) c
asked by ant 
math
make A 14 dot array that has exactly 2 rows
asked by brian 
1st grade
Is this a sentence? The fox sits.
asked by Daby 
math
Name the property of addition that has been applied. (8+2)+ 2 = 8 + (2 + 2)
asked by Luke 
elec
Can f(t) = u(t)5cos(2pi t) be represented directly as a fourier series?
asked by jon 
math
The lottery payoff in a letter game at a church social is determined by the single letter the winner holds. There are four letters, A, B, C, and D. The probabilities that each will be drawn are 1/2, 2/10, 4/10 and 3/10 respectively. The payoffs are $2 for
asked by Anonymous 
US History
1.Square Deal Would the Square Deal be considered a motto?
asked by Amy~ 
Fundamentals of Cost Analysis (Economic Analysis)
What would be the present value of an item that has a salvage value of $25,000 at the end of five years? Assume a discount rate of 3.8% for an endofyear factor. Carry calculations to four decimal places.
asked by D 
political science
How do local governments get their revenue in U.S.? and what are the sources?
asked by amelie 
preschool
what is an integer? a postitive one? a negative one? can you add them?
asked by 8th grade 
geometry
I am having a hard time determining what formula I need to solve the following: On a hexagonal window the height is 1.3m. Find the width.Do I use the pythagreom theorem (but I have only one known number) or do I use the formula 6(1/2as)? I'm confused. The
asked by Cendrillion 
math
find a 9 digit # that fits. the first3 #'s equal 1/3 of the last 3. The middle 3 #'s are the result of subtracting the first 3 from the last 3. All the digits from 19 are used only once. What is the number
asked by brad 
science
Vertebrates" is the name used to describe mountainbuilding processes. a) true b) false Just need to know if my answer or right or wrong. Thanks! :) false
asked by ant 
science
ka value for acetic acid?
asked by cf september 
math
Find the GCF of the numbers using an appropriate method.Explain your reasoning. 240; 10,000 and 4500
asked by Sarah 
math
Perform the calculation mentally, show your work. 3 + 57 + 44 + 36
asked by A 
Math
The points (2, 3,6) and (6, 3, !2) both lie on the sphere x 2 + y 2 + z 2 = 49. What is the shortest path between them if travel is restricted to the surface of the sphere?
asked by John 
geometry
a.40 a.2(3(5+2) b.62(4+5)+6 b.6 c.3.8/4+1 d.52.3+6(6+1) c.7 d.59
asked by Robin 
Algebra 2
I need help finding the vertex of the parabola y=x^23x21
asked by James 
glendale
How do ourfood choices affect our own consumption of the nonrenewable energy available to sustain life?
asked by Anonymous 
ALL OF JISHKA STAFF
Hello I had a couple of questions and was woundering if you have staff members that are teaching or have taught AP BIOLOGY AP PHYSICS B AP CALCULUS AB AP CHEMISTRY I was told that the AP BIOLOGY teacher had gotten extremly ill =(, has he come back? Also
asked by Kate 
child care
two children using finger paints agree to share them. They're engaged in play. A. associative group B. cooperative C. parallel D. groupthink (My sanswer is A) Do you think this correct? Need your feedback.
asked by action 
science
ka value for acetic acid?
asked by cf september 
Germen
I have to explain why certain verbs use sein instead of haben for the formation of the Perfekt? and name some verbs that use sein instead of haben for the formation of the Perfekt!
asked by Mara Selene 
algebra
find x when x=21
asked by newt 
math
how do you find the derivative of square root of x
asked by Jin 
citing
i need help citing.
asked by bryce 
math
2,3,7,16,32,_,_,_,_.
asked by barbara ramey