Questions Asked on
May 10, 2012

physics
A star with an initial radius of 1.0 x 10^8 m and period of 30.0 days collapses suddenly to a radius of 1.0 x 10^4 m. (a) Find the period of rotation after collapse. (b) Find the work done by gravity during the collapse if the mass of the star is 2.0 x
asked by donut 
physics
A star with an initial radius of 1.0 x 10^8 m and period of 30.0 days collapses suddenly to a radius of 1.0 x 10^4 m. (a) Find the period of rotation after collapse. (b) Find the work done by gravity during the collapse if the mass of the star is 2.0 x
asked by donut 
English
No, ’tis not so deep as a well nor so wide as a churchdoor, but ’tis enough, ’twill serve. Ask for me tomorrow, and you shall find me a grave man. What does this pun mean?
asked by Anonymous 
Physics
1. Will the swinging wonder ever let 2 ball bearings go in and one ball bearing out with twice the v? Why? 2. A 10.0 kg object moving to the right with a speed of 4.0 m/s collides and sticks to a 4.0 kg object moving to the left with a speed of 4.0 m/s.
asked by Anonymous 
Chemistry
We apply the same amount of energy to 10.0g samples of aluminum, and silver which begin at the same temperature.Rank the metals from highest to lowest temperature after the heat is applied.
asked by Chris 
ALGEBRA
In a recent survey of 100 women, the following information was gathered. 36 use shampoo A. 46 use shampoo B. 37 use shampoo C. 19 use shampoos A and B. 11 use shampoos A and C. 10 use shampoos B and C. 9 use all three. How many are using shampoos A and C,
asked by Monic 
ALGEBRA
In a recent survey of 100 women, the following information was gathered. 36 use shampoo A. 37 use shampoo B. 38 use shampoo C. 14 use shampoos A and B. 8 use shampoos A and C. 9 use shampoos B and C. 3 use all three. Use the figure to answer the question
asked by Monic 
ALGEBRA
A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results are below. 57 said they drove alone. 29 rode in a carpool. 30 rode public transportation. 6 used both carpools and public transportation. 9 used both a
asked by Monic 
chemistry
What is the pH of a solution formed by mixing 400 mL of 0.025 M HCl with 600 mL of 0.015 M NaOH?
asked by piper 
math
In his pocket, a boy has 3 red marbles, 4 blue marbles, and 4 green marbles. How many will he have to take out of his pocket to ensure that he has taken out at least one of each color?
asked by James 
english
Please read the following excerpt from an essay, and answer the question that follows. Biologically, adolescence is marked by hormonal changes that produce secondary sexual characteristics. These include breast development in females and beard growth in
asked by John 
Science
By how much does the total partition function (excluding electronic) increase when 20 m^3 of Neon at 1.00 atm and 300 K is allowed to expand by 0.0010% at constant temperature?
asked by Clay 
world geography
Distinguishing unique patterns of biodiversity in eastern and western areas of Southeast Asia, the Wallace Line is found between A. Borneo and Sulawesi. B. Borneo to the east and Sumatra and the Malay Peninsula to the west. C. East Timor and New Guinea. D.
asked by Anonymous 
geometry
A 306090 triangle is inscribed in a circle. The length of the hypotenuse is 12 inches. If a coin is tossed on the figure, what is the probability that the coin will land in the circle, but outside the triangle?
asked by Piggy 
Life orientation
Explaination of how human factor that may cause ill health,accidentr,crises or disaster
asked by Zabo 
Chemistry
What concentration of SO32– is in equilibrium with Ag2SO3(s) and 2.10 × 103 M Ag ? The Ksp of Ag2SO3=1.50×10–14
asked by HELP. PLEASE!! 
health
A clear explaination of the consequences of this human factor.
asked by Zabo 
AP Lit and Comp
what is the difference between paradox, juxtaposition, and antithesis?
asked by sarah 
Math
A fair die is tossed and the number facing up is noted. If the probability of getting at least one ‘six’ is to exceed 0.9, how many times should the die be tossed.
asked by Koia 
Physics
Water is flowing in a pipe with a varying crosssection area, and at all points the water completely fills the pipe. At point 1 the crosssection area of the pipe is 0.080 m^2, and the magnitude of the fluid velocity is 2.50m/s. Calculate the volume of the
asked by Lycra 
statistics
A random sample of 16 midsized cars tested for fuel consumption gave a mean of 26.4 kilometers per liter with a standard deviation of 2.3 kilometers per liter. i) Assuming that the kilometers per liter given by all midsized cars have a normal
asked by Koia 
statistics
A researcher conducted a study of the access speed of 40 hard drives and concluded that his maximum error of estimate was 15. If he were to conduct a second study to reduce the maximum error of estimate to 5, about how many hard drives should he include in
asked by Koia 
statistics
On Wednesday afternoons last year a teacher regularly took her class out to study traffic flow through a small village. Her studies established that lorries pass through the village at a rate of 1.5 per 5minute period on Wednesday afternoons. This year
asked by Fafa 
Foreign languages
Writeacher, can you check these statements, please? Thank you. 1) Is it possible to use the expression "lose the bus"? I know one should say "miss the bus" but I just wanted to know if "lose" is a mistake. 2) Things are getting better since the government
asked by Mark 
statistics
Suppose that 98% of your customers in your market have internet access and you select a random sample of 500 customers. What is the standard error of the proportion of customers who don’t have internet access? I seem to be struggling with no standard
asked by john 
statistics
If the average number of textbooks in professors offices is 16 with a standard deviation of 5; and the average age of professors is 43 with a standard deviation of 8. Calculate the covariance of the number of textbooks in professors offices (show your work
asked by Leannes 
inscribed angles
A satellite, B is 17,000 miles from the horizon of Earth, Earth's radius is about 4,000 miles. Find the approximate distance the satellite is from the Earths surface. possilbe answers 13,464 17,464 20,957 21,000 I do not understand how to do these problems
asked by lilman 
Chemistry
How much energy does it take to convert 750 grams of ice at 0 degrees Celsius to liquid water at 40 degrees Celsius? (Specific Heat of water = 4.18 J/g*C and the heat of fusion = 334 J/g)
asked by Morgan Chemistry 
college algebra
ln(9* e^3)
asked by jill 
science
sugar concentration os 10g/100ml given a teaspoon weighs 4 g calculate how many teaspoons of sugar you would consume if you drank a 600ml bottle of soft drink
asked by adam 
Science
1) A block of mass 0.5 kg is placed at the highest point of a fixed smooth sphere of radius 0.5m. The block is gently pushed to one side. Calculate: 0 the 3 o (1) force exerted by the block on the sphere when it makes an angle with the vertical. (ii) At
asked by Vikas 
writing
20) Which of the following is not a way to limit an internet, database, or card catalog search? a) Using a plus sign (+) when searching b) Using all CAPITAL LETTERS when searching c) Using “quotation marks” when searching d) Using a minus () sign when
asked by Anonymous 
writing
19) Which of the following does not belong in the speaker's process of summarizing a source's ideas for his/her speech? a) Reading the entire text, noting the key points and main ideas b) Putting into your own words the main idea c) Including all of the
asked by Anonymous 
writing
I have a dispute with my teacher in 7th grade. In referring to McCarthyism in the phrase "towards the end of this reign of terror", is "reign of terror" a metaphor? Thanks.
asked by Carmen 
math
The outofpocket costs to an employee for dental insurance and dental expenses for one year are as follows: Premium, $4000; Deductible, $300; Copayment, 17% (after the first $300 the employee has to pay). According to the plan outlined, total annual
asked by Jane 
geometry
Two cones are similar. The larger cone, R, has a volume of 1331 cubic feet and the smaller cone, S, has a volume of 64 cubic feet. Find the scale factor of Cone R to Cone S.
asked by jack 
Government
the role of the house rules committee is played in the senate by the a. president pro tempore b. president of the senate c. whip d. majority floor leader House leaders may use any of these calendars to schedule debate on a bill except: A)Union Calendar
asked by MM 
physics
In the 1950s, an experimental train that had a mass of 3.30 104 kg was powered across level track by a jet engine that produced a thrust of 4.90 105 N for a distance of 600 m. (a) Find the work done on the train. 1 J (b) Find the change in kinetic energy.
asked by Amelia 
physics
Pam has a mass of 33.0 kg and she is at rest on smooth, level, frictionless ice. Pam straps on a rocket pack. The rocket supplies a constant force for 15.0 m and Pam acquires a speed of 60.0 m/s. (a) What is the magnitude of the force? 1 N (b) What is
asked by dan 
physics
A steel ball has a mass of 3.8 kg and rolls along a smooth, level surface at 56 m/s. (a) Find its kinetic energy. 1 I got 404.32J bu it doset work (b) At first, the ball was at rest on the surface. A constant force acted on it through a distance of 22 m to
asked by Amelia 
computer science
Promotion time is coming around the corner. In the last board meeting, your supervisor has asked someone to create a list of tables for a Fernandos Skate Shop customer orders. Use the following preliminary field list and list of subjects to get started.
asked by Gloria 
physics
A 18.0kg cart is moving with a velocity of 7.30 m/s down a level hallway. A constant force of 13.0 N acts on the cart and its velocity becomes 3.30 m/s. (a) What is the change in kinetic energy of the cart? 1 . J (b) How much work was done on the cart? 2
asked by Amelia 
writing
true or false 1) Charts, tables and graphs are effective methods of clarifying facts and statistics. TRUE 2) Wikipedia is an acceptable source to cite in a speech. FALSE 3) When finding and evaluating research; information from an unknown blog is
asked by Anonymous 
physics
Mary weighs 450 N and she walks down a flight of stairs to a level 4.50 m below her starting point. What is the change in Mary's potential energy? 1 J whats the PE formula? and setup?
asked by Amelia 
Physics
I got 15.6 but it was wrong? Ace raised a 14.0N physics book from a table 72 cm above the floor to a shelf, 2.20 m above the floor. What was the change in potential energy?
asked by dan 
Spanish
"¿Conoces a mi amigo Alfredo?" "Sí, pero no ___ muy bien." a. lo conoces b. la conozco c. lo conozco d. la conoce C? Thanks
asked by mysterychicken 
physics
A 17kg rock is on the edge of a 103m cliff. (a) What potential energy does the rock possess relative to the base of the cliff? 1 . J (b) The rock falls from the cliff. What is its kinetic energy just before it strikes the ground? 2 . J (c) What speed
asked by Amelia 
physics
In the 1950s, an experimental train that had a mass of 3.30 104 kg was powered across level track by a jet engine that produced a thrust of 4.90 105 N for a distance of 600 m. (a) Find the work done on the train. 1 J (b) Find the change in kinetic energy.
asked by dan 
art
Write a 250 to 350word essay discussing the differences between Impressionism and Post Impressionism. Use examples
asked by janay 
physics
how do you solve for Potential Energy?
asked by dan 
writing
experts within a given field to review and approve an article before publication? A Peer reviewed journal Primary source Newspaper Internet search engine
asked by Anonymous 
writing
When multiple statistics use to describe something, it is the best practice to… ALL Have a visual aid so your audience can see them easily Tell the numbers sequentially. Explain it thoroughly.
asked by Anonymous 
Math
You have 6 cups of sugar. It takes 1 cup of sugar to make 24 cookies. The function c(s) = 24s represents the number of cookies, c, that can be made with s cups of sugar. What domain and range are reasonable for the function? These are my options: domain: 1
asked by Jane 
geometry
Trina rounded to the nearest whole number to solve the expression eighteen point nine minus eleven point four. Her steps are shown below. Which statement correctly describes her error? eighteen point nine minus eleven point four eighteen point nine is
asked by Takerria 
writing
What is another keyword(s) you could search for information on capital punishment? A Death penalty Prison Corporal punishment Killing people
asked by Anonymous 
algebra
If f = (1, 2), (2, 3), (3, 4), (4, 5), G = (1, 2), (3, 3), (5, 5), and H = (1, 0), (2, 1), (3, 2), Find the following and state the domain: 2a. F + g 2b. F  g 2c. F . g 2d. F/g 2e. G o f o h
asked by carrin 
math
An olympic swimmer is having his laps timed during practice. To be aware of his progress, the results are shown as order pairs (l, t) below: (1,19), (2,38), (3,57) (4,76). Which equation represents t, the time in seconds, as a function of l the number of
asked by Jane 
writing
New York Times, and magazines, like Time, and peer reviewed journals are examples of A Periodicals Primary sources Databases Review sources
asked by Anonymous 
Physics
An object is executing circular orbits of radius 0.5 m. If it completes an orbit every 3 seconds, what is its tangential speed?
asked by Bob 
Physics
An Indy car with a speed of 120 km/h goes around a level, circular track with a radius of 1 km. What is the centripetal acceleration of the car (in m/s/s)?
asked by Bob 
art
Write a 250 to 350word essay comparing Klimt’s image to Rodin's statue The Kiss and/or Munch's painting The Kiss.
asked by janay 
writing
properly cite a website during a speech you would need? ALL Author’s name and qualifications The date of the source Where the source is printed
asked by Anonymous 
writing
Which situations is not considered plagiarism? C a)turning in someone else's work as your own (including buying, stealing, borrowing, or hiring someone to write your paper) b)copying words or ideas from someone else without giving credit c)putting a quote
asked by Anonymous 
algebra
A rectangular pool is 25 feet long and 12 feet wide. If the length is increased by 2x what is the new length? How would you use a quadratic equation to solve this?
asked by Mark 
writing
When citing statistics from a web page in your speech you need to provide which of the following: ALL The date and source of the statistic What population(s) the statistic represents The author responsible for the statistic or quotation
asked by Anonymous 
sti
A researcher plans to use a sample of 500 men and women attending a wellknown online university to study the relationship between the number of fastfood hamburgers consumed in a month and BMI (body mass index). The null hypothesis is that there is no
asked by sue 
writing
Which of the following statements is not a general rule for using statistics in a classroom speech? A The more statistics the better. Use statistics sparingly Make sure information is up to date Round off long numbers.
asked by Anonymous 
writing
find information about a hurricane that occurred within the last week? A newspaper science journal science magazine encyclopedia
asked by Anonymous 
chemistry
Calculate the molar solubility of FeCO3 . How many grams of FeCO3 are present in 15.0 L of a saturated FeCO3 solution?
asked by qana 
writing
Putting the main ideas in your own words and sentence structure is considered A Plagiarizing Quoting Abstracting Paraphrasing
asked by Anonymous 
Marketing  Consumer Choice Models
Which consumer choice model involves prioritizing service attributets and then using minimum level cutoffs when evaluating a service? A. Conjunctive B. Disjunctive C. Lexicographic? I think it is A. but I am not certain. Help!
asked by Lisa 
Classical Mythology
Throughout this film, characters appear, or things happen, that are reminiscent of people or events in classical mythology. What do they make you think of? Pick 45 things (people, incidents events, costumes, whater) and explain waht they remind you of
asked by Pamela 
chemistry
What are [H+] and [OH] for 0.01 M perchloric acid?
asked by Sarah 
Chemistry
What is the concentration of H+ in a solution containing 73.0 g of HCl in 0.5 L of water?
asked by Sarah 
Chemistry
What is the pH of a solution of 0.1 M silver hydroxide, which is only 10% ionized?
asked by Sarah 
trig
two dice are rolled, find p(2,then 3)
asked by Lashae 
Chemistry
If 9.03 x 1021 molecules of a compound having general formula CnH2n+2 weigh 1.71g, what is the molar mass of the compound? Give its molecular formula
asked by Susan 
Chemistry
An aqueous solution of volume 7 dm3 is obtained by dissolving 5.5 kg of C12H22O11 in enough water. express the concentration in mol/L and mol/Kg
asked by Susan 
Chemistry
how many atoms of oxygen are present in 30 g of glucose
asked by Susan 
Math
what are calculations entered into a spreadsheet called? A. Formulas b. Labels c. Values d. working data is it A
asked by Andy 
Math
Lisa can shovel snow from her driveway in 45 minutes. Bill can do the same job in 65 minutes. How long would it take Lisa and Bill to shovel the driveway if they worked together?
asked by Priscilla 
family law
rules regulating discovery vary by: A. Circuit B. case c. state d. judge is it C
asked by Andy 
Foreign languages
I would like you to check my sentences, please. Thank you, Writeacher. 1) Describe Dr. Jekyll’s experiment, his process of transformation and the main contrasting features of Dr Jeyll’s new self. (I want to point out the difference between Dr Jekyll
asked by Mark 
law
The first step in pursuing an appeal is to obtain a copy of: a. opposing party's information b. Black laws dictionary c. the applicable rules d. oral argument guidelines is it C
asked by Andy 
math
Give the slope and yintercept of the given line. 1.2x3y=6 2. y=2x 3. y=3 4. x+2=0 Find the slope of the line that is a) parallel and b) perpendicular to the given line. 1. x=8 2. y=10
asked by elizabeth 
life orientation
Criticalx discuss how lifertyle disease behavious impact on the teenagers?
asked by Anonymous 
statistics
A medical board claim that the mean number of hours worked per week by surgical faculty who teach at an academic institution is more than 60 hours. A random sample of 7 surgical facility has a mean hours worked per week of 70 hours and a standard deviation
asked by Jessie 
Government
If you asked the same question about an upcoming election to many people,you would be conducting a? A.Scientific poll B.Straw Vote C.Public Agenda D.Representative Sample
asked by Richard 
english
Can u give me 5sentences describing recycling
asked by Anonymous 
Chemistry
Using Lewis Formulas, assign the oxidation states to the atoms in: (a) CH3S–SCH3(l) Assume sulfur is more electronegative than carbon.
asked by Jematormal91 
income tax
Sean and Jenny are married, file a joint return and have two dependent children, Blake, age 9 and Jake, age 5. Sean has earned income of $72,000. Jenny was a fulltime student (for nine months) with no income. They paid a qualified day care center $7,000.
asked by Andy 
income tax
Kaysia participates in a SIMPLE plan provided by her employer. In 2011, she contributes 6% of her $40,000 salary, and her employer contributes 3% to the plan. What amount of the contributions will be vested in her account at the end of 2011? 0 1200 2400
asked by Andy 
Chemistry
For the oxidationreduction reaction equation given here, 2Rb+Br2 > 2RbBr Indicate how many electrons are transferred in the formation of one formula unit of product.
asked by Jematormal91 
Chemistry
Which of the following is a condensation reaction? Two monomers combine when one adds to the double bond of another. Two monomers break away when one forms a double bond. Two monomers break away with the addition of a water molecule. Two monomers form a
asked by Sarah 
tax
Caroline, who files as head of household, received $9,000 of social security benefits. Her AGI before the social security benefits was $27,000. She also received $200 of tax exempt interest. What is the amount of taxable social security benefits? $9,000
asked by Andy 
tax
Bailey owns a 20% interest in a partnership (not involved in real estate) in which his atrisk amount was $25,000 at the beginning of the year. During the year, Bailey receives a distribution of $20,000 from the partnership. The partnership produces an
asked by Andy 
tax
Andre formed a corporation and owns all of the stock. He contributed property with a FMV of $10,000 and a basis of $7,000 and he received $1,000 cash from the corporation. Andre's taxable gain is: $0 $1,000 $3,000 $10,000 is it 3000
asked by Andy 
Languagge
i need a how to bake a cookie procedure.
asked by HELP! :) 
Calculus
determine an equation for each plane a) contains the point A(6,2,3), B(5,1,3), and C(5,7,2) b) parallel to 2x + 6y + 4z = 1 and contains the point P(3,2,1)
asked by J 
Calculus
explain why a scalar equation of the line exists in 2D space, but not in 3D space.
asked by J 
Calculus
determine the angle between the planes 2x + 2y + 7z = 8 and 3x  4y + 4z = 5
asked by J 
Foreign languages
I left out this sentence. Thank you very much. Write an email to your friend (120 words) telling him/her about your week so far and how you are going to spend your summer holidays.
asked by Mark 
Chemistry
A bond between two sugar molecules is formed by which of the following types of reactions? oxidationreduction condensation singlereplacement doublereplacement
asked by Emily 
Art
For this question it asks, what types of material changes were made in building Greek temples and what effect this had on the architectural world. In my book, It says how the earliest Greek temples were made of wood or brick, which later changed to marble
asked by Bella 
math
Solve the following polynomial inequalities. A) x^3  5x^2 + 2x ≥ 8 B)2(x3  2x2 + 3) < x(x  1)(x + 1)
asked by rick 
international trade
From the economic point of view, India and China are somewhat similar: both are huge, lowwage countries, probably with similar patterns of comparative advantage, which until recently were relatively closed to international trade. China was the first to
asked by ben 
dawson
does this macbeth thesis and scope make sense?
asked by lan 
Important Question
When you are at a school like Havard. Can you apply both schools like Extension or Medical at the same time????
asked by Laruen 
chem
What volume of a 2.5 M stock solution of acetic acid (HC¿HÀO¿) is required to prepare 100.0 milliliters of a 0.50 M acetic acid solution?
asked by pat 
Art
I left out the following statements. Could you please check them? Thank you. Rephrase the following sentences using a modal verb. 1.Maybe Alan missed the train. Alan may have missed….. 2.I’m sure he didn’t break the vase. He can’t have broken
asked by Mike 
Analytic Geometry
Given two planes, discuss the methods used to determine if the planes are parallel, perpendicular, coincident, or none of these.
asked by kelsey 
Calculus Max/Min Prob
At 7:00 am, one ship was 60 miles due east from a second ship.If the first ship sailed west at 20 mph, and the second ship sailed southeast at 30 mph, at what time are they closest together?
asked by Casey 
language arts
Please check my answers! Vibrant is MOST LIKELY to be used to describe a. an accident b. a color c. or an idea (I think it's b but I'm not sure) If on June 1, a father gives his son an allowance increase that is two months retroactive, then the son will a.
asked by SoccerStar 
BUSINESS
what is a stock portfolio?
asked by Laruen 
Programming with Eclipse
Design, implement, test, and debug an application to compute an employee’s weekly pay. If the employee works more than 40 hours a week, the employee earns 1.5 times the basic hourly pay for any time worked over 40 hours. The program should allow the user
asked by Marie 
math
m=4;(3,2)
asked by bill 
Chemistry
Calculate the theoretical pH after 2.50 mL and 9.50 mL of NaOH has been added in both the titration of HCl and of HC2H3O2. Given: Molarity of all chemicals are 0.1 M HCl and HC2H3O2 are 8ml prepared in 100ml water.
asked by Raskin 
writing
In what ways can learning geography be fun and interesting?
asked by Celest 
math
How do you find the number of zeros in this equation: f(x)=3x^25 please help
asked by ted 
to ms.sue
you've been to all these places?
asked by Celest 
math
The probability that a team will carry the puck over the opposing team's blue line is 0.6, the probability that they get a shot on the net is 0.3, the probability that they get a shot away and score is 0.01 and the probability that they cross the blue line
asked by Jessica 
to ms.sue
I can't beleive you went to Egypt. I want to go to disney world. can i have your email so i can talk to you privately.i understand if you pick no.
asked by Celest 
WRITING
Which sources can be use wanting to search several of the library’s online databases at once? B Noodlebib Research Pro CQ Researcher SIRS Knowledge Source
asked by Anonymous 
Math
An ice cream shop has a choice of 7 sundae toppings. suppose you could afford at least for toppings how many different ice cream's Sundays could you order
asked by Jon 
english
is this a compound or complex sentence: They were lovely people, the kind you might meet anywhere.
asked by matt 
6th Geography
which of the following is an accurate statement about the history of south Asia? a) Buddhism was founded in India b) when west Pakistan gained its independence it was renamed Bangladesh c) invaders from the Indus valley conquered Afghanistan in about
asked by poisoned thorn 
Math
the probability of a team winning is 65%. The team played four games in a row. What is the probability of winning 4 games in a row?
asked by Lily 
trig
12sin^2(2x)
asked by Anonymous 
english
What is a good noncontroversial topic for a senior research powerpoint? I need to do a research presentation answering a question (thesis). The rules are pretty lenient, so it can be about almost anything but there must be citations from books and
asked by jason 
statistics
The data set for the study is a sample of a survey conducted on the population of the American Intellectual Union (AIU). It is available via the following link: Excel 2007 DataSet with DataSet Key which contains the following nine sections of data that
asked by Brandy 
math
(9x)(5x)
asked by Anonymous 
statistics
The data set for the study is a sample of a survey conducted on the population of the American Intellectual Union (AIU). It is available via the following link: Excel 2007 DataSet with DataSet Key which contains the following nine sections of data that
asked by Brandy 
math
Jill cuts 8 foot ribbon into pieces that are each 3/4 foot long. the remaining piece of ribbon is shorter than the others. How long is it?
asked by Beti 
Physics
You are driving your race car around a circular test track. Which would have a greater effect on the magnitude of your acceleration, doubling your speed or moving to a track with half the radius? Why?
asked by Bob 
Physics
A 1200kg frictionless roller coaster starts from rest at a height of 24 m. What is its kinetic energy when it goes over a spot that is 12 m high?
asked by Bob 
Physics
A physics textbook is launched up a rough incline with a kinetic energy of 200 joules. When the book comes momentarily to rest near the top of the incline, it has only gained 180 joules of gravitational potential energy. About how much kinetic energy will
asked by Bob 
math
Use long division to find the quotient below. Enter your answer as a polynomial in descending order, using the caret ( ^ ) for exponents; for example, enter x2 as x^2.(x2 + 10x + 21) (x + 3)
asked by Carrie 
Algebra 1
At takeoff, a plan flies at an angle of 10 debrees with the runway. After it has traveled a ground distance of 2,800 feet, find the vertical distance the plane has gained from takeoff. Round your answer to the nearest foot
asked by Brian 
english
What type of clause or phrase is italicized in the sentence below? The driver, confused by the sign, made a wrong turn.
asked by joe 
math
1 ounce= 30 grams about how much does a box of 1,000 paper clips weigh if the empty box weighs 15 grams
asked by Celest 
to ms.sue
do i do 1,000/15?
asked by Celest 
geometry
The sides of a fish tank are 14 inches long. What is the distance between opposite corners of the fish tank? Round your answer to the nearest inch.
asked by Andia 
a
in triangle cat a=4 c=5 and cos t =(1/8). what is the length of t?
asked by Anonymous 
to ms.sue
each paper clip weighs 30 grams
asked by Celest 
psychology
Based upon your readings from the course materials and your own independent research, discuss three research findings related to development from conception to 2 years of age. Relate these findings to any topic in Chapter 2's reading. These topics include
asked by lakesha 
HELPP !!
Copper(I) ions in aqueous solution react with NH3 according to Cu^+ + 2NH3 > Cu(NH3)2^+ Kf=6.3x10^10 Calculate the solubility (in g/L) of CuBr (Ksp=6.3x10^9) in 0.81 M NH3.
asked by HELPP ! 
Physics
Using a swimming pool, two students decide to test the water by setting up an interference pattern at one end of the 50 m pool. They sit 2.0 m apart and create waves by tapping their right foot, in phase with each other, onto the water at a frequency of
asked by Asif 
physics
If you throw a ball against a wall, which of the three impulses is the greatest: throw, bounce, or catch? I think it would be the bounce because the momentum of the ball is highest when it hits the wall. and basically impulse is the change in momentum...am
asked by dreamygirl 
physics....
How is it possible for an object to obtain a larger impulse from a smaller force than from a larger force? i have no clue how this can happen .....it seems impossible ..
asked by dreamygirl 
physics....
How is it possible for an object to obtain a larger impulse from a smaller force than from a larger force? i have no clue how this can happen .....it seems impossible ..
asked by dreamygirl 
PHYSICS
Two balls collide on a horizontal, frictionless table. Ball A has a mass of 0.175 kg and travelling at 1.20 m/s [E 40o S]. Ball B has a mass of 0.225 kg and is travelling at 0.68 m/s [E]. The velocity of ball B after collision is 0.93 m/s [E 23o S].
asked by myra 
math
I'm doing a unit on volume and surface area. So there's a diagram that shows a fish tank after a container of water is poured into the tank. How many containers of water are needed to fill the tank? What is the formula to finding this?
asked by riley 
Phizzics....
A 0.250 kg ball is thrown straight upward with an initial velocity of 38 m/s. If air friction is ignored, calculate the: (a) height of the ball when its speed is 12 m/s (b) height to which the ball rises before falling (c) How would your answers to (a) and
asked by blue ivy 
chemistry
The rate constant, k, for each reaction order is equal to _____ from the linear plot. Reaction Order Answer zero:___ first: ___ second: ___ a. slope (m) b. yintercept c. xintercept d. negative of the slope (m) e. 0
asked by jen 
chemistry / help please
For each reaction,which ion in the precipitate was responsible for the color 1reaction of Sodium Hydroxide and Copper(II)Sulfate 2reaction of Sodium Sulfate and Barium Chloride. 3reaction of Sodium Hydroxide and Iron(III)Sulfate. 4reaction of Sodium
asked by Marie 
Ashford
Which of the following represents a “soft” dimension of change? (Points : 1) Systems Strategies Employee motivation Structures
asked by Nadne 
grammar
In this sentence: Ms. Evans asked,''Trish, do you know why clouds change shape? '' is the word you a subject pronoun or an object pronoun?
asked by India 
Physics
In the 1950s, an experimental train that had a mass of 3.30 104 kg was powered across level track by a jet engine that produced a thrust of 4.90 105 N for a distance of 600 m. (a) Find the work done on the train. J (b) Find the change in kinetic energy. J
asked by Haley 
Physics
A 4.00 103kg car has a speed of 9 m/s. The car then hits a tree. The tree doesn't move and the car comes to rest. (a) Find the change in kinetic energy of the car. . J (b) Find the amount of work done in pushing in the front of the car. J (c) Find the
asked by Haley 
physics
A 15.0kg test rocket is fired vertically from Cape Canaveral. Its fuel gives it a kinetic energy of 1961 J by the time the rocket motor burns all the fuel. What additional height will the rocket rise? m  how do you organize this? how do the J's fit in?
asked by Haley 
physics
An archer puts a 0.26kg arrow to the bowstring. An average force of 200 N is exerted to draw the string back 1.4 m. (a) Assuming no frictional loss, with what speed does the arrow leave the bow? m/s (b) If the arrow is shot straight up, how high does it
asked by Haley 
AP physics
A 1.60g bullet, moving at 542 m/s, strikes a 0.249kg piece of wood at rest on a frictionless table. The bullet sticks in the wood, and the combined mass moves slowly down the table. (a) Find the speed of the combination after the collision. m/s (b) Find
asked by Alica 
AP physics
A 1280kg car starts from rest and accelerates to 80 km/h in 23.0 s. Friction exerts an average force of 449 N on the car during this time. (a) What is the net work done on the car? J (b) How far does the car move during its acceleration? m (c) What is the
asked by Alica 
statistics
survey showing the IQ of each person interviewed and the IQ of his or her mother. That is all the information you have. Your boss has asked you to put together a report showing the relationship between these two variables. What could you present and why?
asked by Anonymous 
bio
what do macrophages have to do with coplement proteins
asked by Matt 
English
for WFE book i hve some questions in chapter 8 jcob say he not ready to be old yet, tell what he mean by this, what determine age, when one become old? this just be when you feel old u be old? it not have anything to do with age?
asked by Mohammad 
English
WFE question in chap 8 jacob look at himself in mirror but he say he not find himself anymore. "when i stop being me?" how u answer that question for main character, urself or another person? i not get what this mean i say you try to look for yourself?
asked by Mohammad 
Algebra
the length of a rectangle is 5 centimeters more than twice its width. if the perimeter of the rectangle is 94 centimeters, what are the length and width of the rectangle?
asked by Michael 
physics
An 21.0 , 12.0 , and 5.0 resistor are connected in series with an emf source. The current in the 12.0 resistor is measured to be 4.00 A.
asked by dan 
Chemistry
A beaker contains 100 mL of water. We add 112 mg of KOH(s). What is the concentration of H+ions?
asked by Sarah 
Chemistry
0.1 mol of HCl is added to 1 L of water. What is [H+] and [OH]?
asked by Sarah 
Chemistry
Initially, we place 2 mol of A and 4 mol of B in a 0.5 L flask. At equilibrium, the flask contains 0.3 mol of C. Determine the value of K. A(g) + B(g) 3C(g) + 2D(g)
asked by Sarah 
Art
What are the similarities and differences between scroll paintings in China and Japan?
asked by Bella 
English
Who is the president of your club? 1. It's Yun Seho. 2. He is Yun Seho. 3. Yun seho. (Are the answers all cocrrect? Which one is common?)
asked by rfvv 
English
WFE question in 9th chap agust say that women be problem, telling "it must be full moon" it actually be women or august that be problem? i not get this one
asked by Mohammad 
Art
Describe features found in the early buildings of the International Style of architecture. Who was responsible for its start and what has it developed into?
asked by Bella 
English
1. What is the name for the hat which a coook wears when he cooks? 2. He is wearing swimming goggles. 22. He is wearing swimming glasses. (Are both the same?)
asked by rfvv 
English
WFE question the guy who owned rosie be4 call her dumb as bag oof hammer. he be right? give example i not think he be right because she still be intelligent she understand what be going on and make gesture
asked by Mohammad 
English
WFE question in chap 11 y do walter change his opinion of jacb? y this be important? because he feel bad for him?
asked by Mohammad 
Chemistry
Calculate the solubility of CaCrO4 if its Ksp is 1.6 x 109 at 25°C, in mg/L.Ksp = 1.6 x 109
asked by Sarah 
Chemistry
7.8 g of calcium fluoride is dissolved in 100 L of water at 25°C. Will a precipitate be formed?
asked by Sarah 
English
Who main character Jacob referring himself to when he say I m their shephard, their protectr what do he mean by this?
asked by Mohammad 
Chemistry
Aluminum metal is used in many familiar objects, from frying pans to screen doorframes and jet aircraft. However, the bottle of aluminum powder in the chemis try laboratory carries a warning that the contents are potentially dangerously combustible.
asked by David E. 
Chemistry
Aluminum metal is used in many familiar objects, from frying pans to screen doorframes and jet aircraft. However, the bottle of aluminum powder in the chemis try laboratory carries a warning that the contents are potentially dangerously combustible.
asked by David E. 
English
WFE question in chap 11 y do walter change his opinion of jacb? y this be important? because he feel bad for him?
asked by Mohammad 
computers
Imagine that you have been hired as an IT consultant and have been asked to write a recommendation for an OS. This startup company primarily develops games and has approached you to recommend an OS for its 25 employees who use desktop PCs. The primary
asked by Samantha 
PreCalc
How would you prove this identity? (sin^3(x)+cos^3(x))÷(12cos^2(x)) = (sec(x)sin(x))÷(tan(x)1)
asked by Anna 
geometry
A regular hexagon has an area of 96sqrt3. What is the length of each side of the hexagon?
asked by Piggy 
chemistry
You work with the following system: 2X(g) Y(g) At, equilibrium, [Y]=3[X]. If K=10, calculate the [Y] at equilibrium.
asked by Katie 
Physics
An object is launched directly upward at an initial speed of 42.3 m/s. Assuming there is no airresistance acting on the object, what is its maximum height relative to its launch position?
asked by Anonymous 
Physics
A 3.60 kg book is initially on a shelf located 1.80 m above the floor. The book is moved from the shelf to a coffee table that is just 0.380 m above the floor. What is the change in the book’s gravitational potential energy?
asked by Anonymous 
Physics
A 3.66 kg block is placed on an inclined surface that makes an angle of 18.5° relative to horizontal. The coefficients of static and kinetic friction between the block and surface are 0.534 and 0.239, respectively. The block remains at rest when released.
asked by Anonymous 
Precalc
Verify this identity. How would you prove it (sin^3(x)+cos^3(x))÷(12cos^2(x)) = (sec(x)sin(x))÷(tan(x)1)
asked by Beatrice 
precalculas
An object is situated so that its center of mass is located at the origin.Three forces X,Y, and Z act on the object at the same time. Force X passes through the point (3, 4), forve Y passes through the point (5,12), and force Z passes throught the point
asked by R 
poli sci
the president has the power to appoint which of the following positions? a) members of the House of Representatives who resign before their term has expired b) all members of the State Department c) al state Supreme Court justices d) cabinet secretaries e)
asked by tina 
PreCalculus
How would you prove/Verify this Identity. x=theta (cosx+sinxsin^3x)/(sinx)=cotx+cos^2x
asked by Beatrice 
Chemistry
A mixture of lead, magnesium, nitrate and chromate ions are present in a solution. What will the precipitate be? Question 2 options: A) MgPb B) Pb(NO3)2 C) PbCrO4 D) MgCO3
asked by Katie 
Chemistry
What is the maximum concentration of Ca2+ ions in a solution containing 0.010 M of F ions?
asked by Katie 
Chemistry
A solution contains I, Br and OH ions. If Ag+ is added, what will the precipitate(s) be?
asked by Katie 
Chemistry
Which of the following pairs of compounds will give a precipitate in a diluted solution? Question 4 options: A) Cu(NO3)2 and Na2CO3 B) KNO3 and NaCl C) MgCl2 and Ba(NO3)2 D) NH4Cl and Al2(SO4)3
asked by Katie 
Chemistry
The Kc for the following reaction at 940oC is 1.38. Given the concentrations [CO2] = 0.500 M, [H2] = 0.425 M, [CO] = 0.610 M and [H2O] = 0.695 M, one can conclude that: H2(g) + CO2(g) ↔ CO(g) + H2O(g) Question 8 options: A) the system is not at
asked by Katie