Questions Asked on
June 21, 2012

Physics
You (65 kg) are standing in an elevator traveling upward that passes the 3rd floor at 3.5 m/s and then passes the 4th floor at 4.5 m/s one second later. Find the normal force exerted on your feet by the elevator while it is passing between these floors. I
asked by Katie 
geometry
As the marketing designer for Burger King, you are given a 4 in by 6 in logo and have been told to create an advertisement that is six times larger. What is the area of your advertisement (in feet)? [12 inches = 1 ft] Enter the numerical answer only
asked by Anonymous 
English
1. Will you play a song for me? 2. Will you play a musical instrument for me? 3. Will you turn a umsic record on for me? (Does #1 mean #2 or #3? What is the meaning of #1?)
asked by rfvv 
physics
A dad pushes tangentially on a small handdriven merrygoround and is able to accelerate it from rest to a frequency of 16 rpm in 11.5 s. Assume the merrygoround is a uniform disk of radius 3.0 m and has a mass of 790 kg, and two children (each with a
asked by brooke 
chemistry
I have my exam in a little over 7 hours...can anyone help explain how to draw atoms in the Bohr Rutherford and Lewis Dot methods, as well as how to draw them as compounds and ions? My friends are no help, nor is the internet. Please!
asked by Sydney 
Chem(Check Please)
Will someone please check my answers for me? I put arrows(
asked by Anonymous 
chemistry
An ice cube of mass 10g at 10C is added to the beaker containing 150mL of water at 88.5C. Assuming no heat is lost to the surrounding; calculate the equilibrium temperature for the liquid after the ice melts.(Heat of fusion for H2O = 6.01 kJ/mol. Heat of
asked by Bill 
Physics
Block 1 (2.5kg) is on the surface of a frictionless inclined plane that makes an angle of 20 degrees with the horizontal. Assume g = 10 m/s2 magnitude of the acceleration of block 1 down the incline plane is 3.4 m/s2 How far does block 1 travel down the
asked by Janelle 
Calculus 1
Derivative of 7^(SinX)... something to do with log/ln?
asked by Max 
Chemistry
If I have storage tank containing 3.8 X 10E5 liters of water that is contaminated with NaOH and has a pH of 10.82. What volume of 0.1 M HCl is required to bring the pH= 7.0?
asked by Nicole 
Math
A sample of 64 statistics students at a small college had a mean mathematics ACT score of 28 with a standard deviation of 4. Estimate the mean mathematics ACT score for all statistics students at this college. Give the 95% confidence interval.
asked by Jameson 
Math
A sample of 64 statistics students at a small college had a mean mathematics ACT score of 28 with a standard deviation of 4. Estimate the mean mathematics ACT score for all statistics students at this college. Give the 95% confidence interval.
asked by Jameson 
Chemistry
If 2.80 kJ of heat is needed to raise the temperature of a sample of metal from 10.°C to 27°C, how many kilojoules of heat will be required to raise the temperature of the same sample of metal from 40.°C to 58°C?
asked by Joseph 
Math 81
How can $60,000 be invested, part at 7% annual simple interest and the remainder at 12% annual simple interest, so that the interest earned by the two accounts will be equal?
asked by Charlene 
Chemistryplease help!
What is the meaning of combining power of elements and radicals?
asked by Richard R. 
Chemistryplease help!
What is the chemical formula for alluminium hydroxide?
asked by Jeconiah 
Chemistryplease help!
What is the chemical formula for alluminium hydroxide?
asked by Jeconiah 
Chemistryplease help!
What is the meaning of combining power of elements and radicals?
asked by Richard R. 
drawing
please give me some important tips about decoration of a science chart based on 'tiger in trouble.'
asked by edward 
Foreign languages
I urgently need you to check these few sentences. Thank you. 1) The flowers are not described as statically as in a painting but (as) alive with motion. 2) Her mind moves back and forth in time, whereas she stays fixed in the sitting of her second holiday
asked by Mike 
Foreign languages
I urgently need to check how to rephrase modals expressing possibility/probability etc. 1. I’m sure/certain he didn’t rob the bank. He can't have robbed the bank (only choice) 2. I’m certain/sure he stole the ring from Peter William’s bedroom. He
asked by Mike 
sports
hi i am having problems with a essay on national governing bodies. can you help me with 1. who awards it 2. how do you achieve it. 3. what are strenghts in terms of improving quality of sports development opportunities for participants 4. and weeknessess
asked by elizabeth 
math
A tank, with a rectangular base and having vertical sides of height 4 m, is initially full of water. The water leaks out of a small hole in the horizontal base of the tank at a rate which, at any instant, is proportional to the square root of the depth of
asked by Maya 
Math
i am a four digit numeral number between 3000 and 4000.My ones digit is 3 greater than my thousands digit.The two other digits are the same.If the sum of my digit is 20,what number am i?
asked by Anne 
trigonometry
an automobile tire has a diameter of 36 inch.how many revolution will the wheel make an arc the automobile travels 1 mile (5280 A)?
asked by erin 
Science
can anyone please give me an example of a numbered key (classification) for these organisms about their structural features? squirrel,turtle, emu, goldfish and mouse. i need to make three but i need one example... thank you
asked by Maria 
Chemistry(Please Respond)
Willsomeone, please check my answers? (
asked by Anonymous 
Biology
When a grouse eats berries, the berry seed are eliminated as waste materials and may be dropped in another part of the forest where they may sprout and eventually grow into new berry plants. How would you classify the symbiotic relationship between the
asked by BDM 
Biology
The function / effectiveness of an enzyme can be disabled by the slightest change in the sequence of its proteins. What prevents an enzyme from performing its functions in the event that its protein sequence is changed?
asked by BDM 
chemistry
a 230.0ml sample of a 0.275 molarity solution is left on a hot plate over night the folowing morning the solution is 1.5 molarity. what volume of solvent has evaportated from the 0.275 molarity solution?
asked by kristen 
chemistry
a 230.0ml sample of a 0.275 molarity solution is left on a hot plate over night the folowing morning the solution is 1.5 molarity. what volume of solvent has evaportated from the 0.275 molarity solution?
asked by kristen 
chemistry
a 230.0ml sample of a 0.275 molarity solution is left on a hot plate over night the folowing morning the solution is 1.5 molarity. what volume of solvent has evaportated from the 0.275 molarity solution?
asked by kristen 
physics
The box decelerates at a rate of 3m/s and skids 24 meters becoming to a stop.How fast were you traveling when the box fell out.
asked by Ray 
Maths
Determine the coefficient of x^5 in the binomial expansion of (23x)^7?
asked by arif 
math
find the value of y in this equation: 16y=164
asked by tia 
math
given the formula D=ABC, what is the formula for C?
asked by tia 
math
solve the following equation: 6y  20=2y 4
asked by tia 
physics
What is the restoring force of a spring stretched 0.35 meters with a spring contact of 55 newtons/meter?
asked by Anonymous 
Physics question
1.) If the curling stone was initially sliding at 2.97 m/s and stopped precisely 10.8 meters from its launch point, then the coefficient of friction (the ratio between the magnitude of the frictional force and the magnitude of the normal force) was? 3.)
asked by Christina 
geometry
DC = 10 What is the measure of angle ABD?
asked by VEE 
Physics HELP!
A lead ball has a volume of 94.3 cm3 at 19.3°C. What is the change in volume when its temperature changes to 34.3°C? 94.4cm3 was the answer I put and I was wrong. Can someone help?
asked by Alec 
Physics
A cube of wood and a cube of concrete, each 0.17 m on a side, are placed side by side. One of the long faces of the rectangular prism formed by the two cubes is held at 17°C, and the opposite long face is held at 32°C. What is the total rate of heat
asked by Emily 
Physics help
At 265 K, the pressure of 0.0454 mol of an ideal gas is 1.42×105 Pa. What volume does the gas occupy?
asked by Teresa 
Physics
In coastal towns, breezes tend to blow offshore (from the land to the ocean) during the night and early morning, and onshore (from the ocean to the land) during the afternoon and evening. What factors primarily contribute to this effect? It can be more
asked by Bobby 
frictionless ramp
Suppose a 19.3 kg curling stone was on a frictionless ramp. If the ramp is 4.76 m tall and 19.5 m long (along the incline), how much mass must hang from the pulley in order that the stone not accelerate up or down the ramp?
asked by Brittney 
us history grade 7
what are the pros and cons of the fur trade?
asked by kyle 
geometry
Find the total area for the cylinder with the given measurement. r = 2, h = 4
asked by moe 
information literacy
3. Which of the following sets of Library of Congress call numbers is in the correct order? A. E88 G62 L166 1995, E88 G62 L45, E88 G62 D225, E88 G2512 S57 1998 B. E88 G2512 S57 1998, E88 G62 D225, E88 G62 L45, E88 G62 L166 1995 C. E88 G2512 S57 1998, E88
asked by tania 
Finte Math  Simplex Method
Just a few questions to make sure I am understanding the simplex method. First you set up matrice, then you find the column with the largest negative number in bottom row. That is the column you will pivot. So then how do you determine which row is the
asked by Robson 
Chemistry
Iron (III) oxide is formed when iron combines with oxygen in the air. How many grams of Fe2O3 are formed when 16.7 g of Fe reacts completely with oxygen? a. 12.0g b. 23.9g c. 47.8g d. 95.6g
asked by Summer 
Physics
A gas is sealed in a container with rigid walls that allow heat to flow through them. A thermal process takes place on the gas. What would be the best model for the type of process?
asked by Peter 
to ms.sue science project part 1
Please select one of the four solarenergybased topics listed below to research. Based on your research you are to create a poster that details what you learned. Please make a bibliography of the resources that you used for your information, to go along
asked by Celest 
Physics
A system performs 349 J of work on its surroundings while losing 133 J of internal energy. Determine the heat transferred to the system during this process.
asked by Kaley 
calc
At what rate is the amount of material growing if bacteria in a sample increases to 250 when the sample is observed for 150 minutes?
asked by kris 
To DrBob222(Please check Chem)
(This homework question has been removed due to a copyright claim submitted by K12 Inc.)
asked by Liz 
chemistry
why the increasing in substrate concentration increase in the rate of reaction of enzymes.
asked by Anonymous 
algebra
How can I solve a graduated commission scale.
asked by Pam 
to ms.suescience project part 1
so is the project basically asking to write down details abd information i learned about solar cars and to write down the websites? please read this and describe to me: Please select one of the four solarenergybased topics listed below to research. Based
asked by Celest 
reading
Renee has a research paper due in three days. She has set aside two hours to complete this task. What is wrong with this study goal? A. The time she has allotted is not realistic. B. The goal is not concrete and specific. C. It is not significant and
asked by Anonymous 
GEOMETRY
3. A ladder leaning against a wall makes a angle with the ground. The base of the ladder is 4 meters from the building. How high above the ground is the top of the ladder?
asked by MAKIL 
Chemistry
How would you go about solving an equation like this when all they give you is a equilibrium equation?: Given the standard free energies of formation in Appendix B in the textbook, what is the value of E ^\circ for the cell reaction?
asked by Claire 
statistics
IQ scores are normally distributed with a mean u = 100 and a standard deviation o =15. Based on distribution, determine % of IQ scores between 100 and 120 =
asked by Dianne 
Chemistry
How would you go about solving an equation like this when all they give you is a equilibrium equation?: Given the standard free energies of formation in Appendix B in the textbook, what is the value of E ^\circ for the cell reaction?
asked by Claire 
Foreign languages
Writeacher, I started to questions with "Briefly outline", I need to find a synonym for "outline". 1)Briefly outline the main values on which Victorian society was based....
asked by Mike 
bus 219
technology environment for Club IT
asked by Anonymous 
Physics
As its volume is doubled from an initial value of 0.088 m3, a sample of gas is held at a constant pressure of 3.4 × 104 Pa by heating. Then, while a constant volume is maintained, the gas is cooled back to its initial temperature. The work that the gas
asked by Kaley 
Maths
A cyclist rides one lap of a circular track at a constant speed so that the riders distance, d meters, from the starting point at any time, t seconds, after starting is: d= (50)  ( 50cos x (pi)t/30, find: (a) the time taken to complete one lap (b) the
asked by arif 
poisoning
what is the most effective way to prevent carbon monoxide poisoning is by?
asked by Anonymous 
Calculus
Evaluate each limit. If it exists. a) Lim x^3 + 1 x>1  x + 1 b) Lim 3x^2  x^3 x>0  x^3 + 4x^2 c) Lim 16  x x>16  (√x)  4
asked by Jessica 
Calculus
differentiate each function a) y = (cscx)(cotx) b) y = x^2 + e^(2x)
asked by Jessica 
Calculus grade 12
hi i need help differentiating these.. 1. y = cos(3x^2 + 2x) 2. y = ln(3x^2 + 5) thank you
asked by Albert 
Calculus grade 12
find dy/dx by implicit differentiation a) xy + x^5y^2 + 3x^3  4 = 1 b) lny = cos x thank you
asked by Albert 
Chemistry
An ice cube of mass 10g at 10C is added to the beaker containing 150mL of water at 88.5C. Assuming no heat is lost to the surrounding; calculate the equilibrium temperature for the liquid after the ice melts.(Heat of fusion for H2O = 6.01 kJ/mol. Heat of
asked by Anonymous 
Research
True or False Researchers who have strong opinions about the subject of a study are likely to do a better job of conducting the research. False, strong opinions could lead to bias results.
asked by Lis 
Calculus grade 12
find the slope of the tangent line to y^4 = 3x^2  2x at the point (1,1)
asked by Albert 
math/prealgebra
5 is 20% of what number? I am so lost
asked by logan 
anonymous
At 1 atm, how much energy is required to heat 55.0 g of H2O(s) at –20.0 °C to H2O(g) at 163.0 °C?
asked by Anonymous 
Calculus review
use the first derivate test to locate the maxima and minima of y = x^(1/3)
asked by Lilliana 
calculuss review for exam
use the second derivate test to locate the maxima and minima of y = x^2 + 2x  3
asked by Amarjeet 
research
True or False Research may be used as a diagnostic tool to provide information about what is happening in the enviroment? True
asked by Lis 
Calculus
consider the function y = 2sinx a) determine dy/dx b) calculate the exact value of x for which the slope of the tangent to the graph is √2 in the interval [0, pie] c) determine the equation of the tangent in part (b). d) determine the yintercept of the
asked by Sarah Berkley Adamson 
Physics
A uniform rigid pole of length L and mass M is to be supported from a vertical wall in a horizontal position, as shown in the figure. The pole is not attached directly to the wall, so the coefficient of static friction, μs,between the wall and the pole
asked by James 
English12
Below, you will find a list of sentences. After each sentence, select true if the topic of the statement is suitable to form the basis of a single persuasive paragraph. If the topic of the statement in your textbook is unsuitable for a single persuasive
asked by Sam 
Chemistry (1Question)
This is really confusing. I know how to do the equilibrium which also has to do with reaction rates but they didb't give it to me as a choice. Please Please help me. I post other questions that i answered already but no one answered me. I just needed
asked by Liz 
phy science
a 20,000kg railroad car is traveling at 3m/s when it collides and couples with a second, identical car at reat. What is the resulting speed of the combined cars?
asked by amy 
Implicit differentiation calculus
PLEASE HELP , I DON'T UNDERSTAND find dy/dx by implicit differentiation a) xy + x^5y^2 + 3x^3  4 = 1 b) lny = cos x thank you
asked by Albert 
Calculus exam review, PLEASE HELP!!
for each function, determine the equation of the tangent line to the graph for the indicated value of the variable. a) y = 3cosx + 4sinx + 1 , when x = pie b) y = x  3cosx , when x = (5pie)/3
asked by stephanie 
Calculus exam review, PLEASE HELP!!
find the angle between these lines [x,y,z] = [3,4,1] + s[1,5,2] [x,y,z] = [8,5,9] + t[2,3,6]
asked by stephanie 
geo
What is the distance between the points (6, 32) and (−8, −16)?
asked by dazja 
geography
Due to its remote,mountainous location and the way of life of its people, Albania has often?
asked by asa 
Math
emily is constructing a triangle one side is 3 inches long and another is 5 inches long which of the following is the smallest measure emily could use for the third side of the triangle is it 2 inches? 3 inches? 4 inches? or 5 inches?
asked by Lisa 
Economics
How would you expect the return on a stock market fund to differ from the return on savings account? Why do you think the two rates of return differ?
asked by Kathy 
reading
the first sentence of your introductory paragraph should do all of the following EXCEPT:
asked by Clueless 
math
what is the value of 2x+5+3=
asked by junior 
Science help
Will someone please check my work for me? Molecules involved in a chemical reaction must meet to react. What is this concept called? entropy enthalpy collision theory
asked by Napolian 2 
Research
If Dr. Robinson rejects the null hypothesis after observing a test statistic which exceeds the critical value at the .05, there is
asked by Steely 
Calculus grade 12 exam review PLEASE HELP ASAP !!
PLEASE HELP ME! Exam is in an hour and i need to finish this exam pretest to help me ! consider the function y = 2sinx a) determine dy/dx b) calculate the exact value of x for which the slope of the tangent to the graph is √2 in the interval [0, pie] c)
asked by Sarah Berkley Adamson 
Reading
Which of the following is the most effective opening sentence for an introductory paragraph? A. I heard a loud sound before I collapsed B. Bang! That was the last soound I heard before I collapsed. C. The loud sound was the last thing I heard before I
asked by Clueless 
Physics
The diagram for this problem is a pulley. On the left end Box 1 is sitting on a table and Box 2 is attached sitting on top of Box 1 and is attached to the string for the pulley. The right side has the string attached to Box 3 which is lifted off the table.
asked by Caitlyn 
Grammar
Choose the correct answer I put my answers in CAPS: 1) Neither his physician nor the floor nurses HAVE been in to see him yet this morning. 2) On sponge and instrument count, it was noted that one of the sponges WAS missing. 3 The costs of his research
asked by Lori 
Physics
A 3.1 kg ball is tied to a string and swung in a horizontal circle at a speed of 7.2 m/s. the radius of the circle is 2.2 m. What angle does the string make with the horizontal? What is the tension in the string?
asked by Stephanie 
CALCULUS EXAM REVIEW
Hi, my exam is tomorrow and I'm here with my girlfriend who's also in the same class trying to figure out how to do the exam review but we're stuck.. please be kind and help us out, we'd really appreciate it. Thank you in advance. QUESTION: Write a vector
asked by Roberto & Cecilia 
Grammar
Specify if sentences are complete, fragments or runon: 1) The surgical team recommended that surgery be performed as soon as possible, the patient, however, wanted more time to think about it. SENTENCE FRAGMENT 2) Postoperative plan is for the patient to
asked by Lori 
calculus exam review
write two different vector equations for the plane that contains the points A(6,1,4), B(3,7,9), C(5,0,3)
asked by Roberto & Cecilia 
Grade 12 Calculus University
Hello ^___^ Please help me! Thank you very very much! Determine if the planes are parallel. [x,y,z] = [1,2,2] + s[0,1,0] + t[0,0,1] [x,y,z] = [1,0,3] + s[0,0,1] + t[1,0,0] thank you ^__^Y
asked by Miyako 
Statistics
The minimum or maximum value that one would expect the test statistic to yield if the null hypothesis is true is an example of which of the following
asked by Anonymous 
Grammar
Identify the tenses (past, present, mixed): 1. Synthes selfretaining anterior cervical retractors were then placed behind the longus colli muscles. PAST TENSE ________________________________________ 2. There was a small rent in the middle left posterior
asked by Lori 
Art
go to yah oo and type in Facade de StTrophime d'Arles then go to the first site listed. Scroll down to the Tympan et archivolte. What is the story behind that sculpture?
asked by Anonymous 
math
A cylindrical tank has a radius of 15 ft. and a height of 45 ft. How many cubic feet of water can the tank hold?
asked by Misty 
Criminal Justice rsearch and statistics
I have to write a description of an original research project at least 4 pages long. I have to formulate a theory based on any subject that is relevant to the criminal justice system. My theory should be a definitive statement . There are 3 sections;
asked by Lonni 
Essay
The body of your essay contains which of the following? A. The longest section of the essay B. The supporting details. C. A Conciluding sentence D. All of the above
asked by Clueless 
writing essay
Catherine received a 70 on her essay because the vocabulary was basic and there was a lack if clear and active voice. Which of the following areas of her essay were weak? A. Organization B. Mechanics C. Content D. Style
asked by Clueless 
writing essay
Jack was told the overall content of his paper was weak. What does this mean? A. The tone of his paper was not original B. He had to many grammatical errors C. The overall ideas in his essay were not fully developed D. The flow of his essay was
asked by Clueless 
What does this mean
What does this mean? The tympanum of St. Trophimus takes up the theme of biblical tetramorph evoking the vision of Ezekiel and the Apocalypse of St. John, then a symbol of the four Evangelists, it shows a triumphant Christ and dispenser of justice, seated,
asked by Anonymous 
Trig
Jessica attains a height of 4.7 feet above the launch and landing ramps after 1 second. Her initial velocity is 25 feet per second. To find the angle of her launch, which equation can you use with the given information to solve for θ? (Answer: 1 or 2).
asked by Jessica 
Math
What is the volume of a cubed shaped box with edges 6 centimeters in length
asked by Misty 
math
(1)How much water can be held by a cylindrical tank with a radius of 12 feet and a height of 30 feet. (2)The diameter of a frisbee is 12 inches, what is the area of the frisbee
asked by Misty 
Trig
Since the center is 6 feet above the water, the horizontal line of symmetry of the sine curve will be 6 units above the xaxis. This information helps you find the value of vertical shift. Write its value.
asked by Jessica 
Trigonometry
Since the radius of the wheel is 7 feet, point P goes 7 feet above and below the center of the wheel. From this information, you can find the amplitude. Write the value of this constant.
asked by Jessica 
lsu
I want to check and see if I understand an independent clause and a dependent clause. In this sentence. "Bethany went home and spoke with her mother about tomorrow's parade. Do I have 2 independent sentences?
asked by beverly 
accounting
Plasto Products does not pay income taxes and has one owner Is this corporation, partnership or sole priortership
asked by Anonymous 
Foreign languages
Writeacher, can you please check these sentences? Thank you. 1 Talk about the place where you live using the following grid: . – What is your town like – How long have you lived there – if you like it or not and why – If you don’t like it where
asked by Mike 
Foreign languages
I left out these sentences. Can you please check them? 1) You bought a new pencil case, but it wasn’t necessary. 2) It wasn’t necessary for her to follow her father’s advice. 3) I’m sure he didn’t steal the money. Is it possible for you to close
asked by Mike 
chemstry
In a constantpressure calorimeter, 50.0 mL of 0.340 M Ba(OH)2 was added to 50.0 mL of 0.680 M HCl. The reaction caused the temperature of the solution to rise from 23.69 °C to 28.32 °C. If the solution has the same density and specific heat as water,
asked by cassie 
Trigonometry
The wheel makes 6 complete revolutions every 60 seconds. From this information, you can find the value of constant b. The constant is π/?. (Enter only the value that replaces the question mark.)
asked by Jessica 
Statics
Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work. Class Frequency 6163 19 6466 17 6769 5 7072 10 7375 12
asked by kesha 
Trig
P was at its maximum after 5 seconds. Use this information to write the value of the last constant, h. (If the value is a fraction, use a slash to separate the numerator from the denominator without spaces, such as 3/4.)
asked by Jessica 
Trig
Sketch the graph through at least one complete cycle. Label the axes on the coordinate plane. Use your graph to predict the height of point P above the surface of the water when the stopwatch shows 7 seconds. Round to the nearest tenth of a foot. (Enter
asked by Jessica 
English(check)
Will someone please check my answers. I'm not sure what is the answer for #1. It is just too confusing. ** Italic. ()underlined. 1)Choose the answer that tells how to correct the sentence. If the sentence is correct, choose "correct." “I’ll make a deal
asked by Anonymous 
physics
At the top of the serve, the racket has an angular speed of 23.7 rad/s. If the distance between the top of the racket and the shoulder is 1.39 m, find the magnitude of the total acceleration of the top of the racket.
asked by Anonymous 
Physics(Please help)
The intensity (in W/m2) of one sound is 4.83 times as great as the intensity of another sound. Relative to the quieter sound, what is the intensity level â of the louder sound? I am not sure how to start this. Thank you.
asked by Hannah 
Chemistry
In the following experiment, a coffeecup calorimeter containing 100. mL of H2O is used. The initial temperature of the calorimeter is 23.0 degrees C. If 3.80 g of CaCl2 is added to the calorimeter, what will be the final temperature of the solution in the
asked by Abby 
Physics(Please check)
A paperweight, when weighed in air, has a weight of W = 6.95 N. When completely immersed in water, however, it has a weight of Win water = 4.26 N. Find the volume of the paperweight. Would I multiply the two values of weight and then by the density of
asked by Hannah 
Physics
If you run 100 m at 5 m/s and 300 m at 1 m/s, what is your average speed?
asked by anonymous 
Physics
A pot contains 243 g of water at 78°C. If this water is heated and all evaporates to form steam at 100°C, what is the change in the entropy of the H2O?
asked by Alex 
Geometry
Joel is laying pipe for a sprinkler system before he plants his lawn.The lawn is a rectangle 15 feet long and 8 ft wide. He needs to lay a piece if pipe that will run diagonal along the lawn. It will divide the area of the lawn into two right triangles.
asked by Ashley 
Physics
Three fixed charges are located along a line. The  2 C charge is 10cm to the left of the +5 C charge and the 4 C charge at 4 cm to the right of the +5 C charge. a.what is the force exerted on the 4 C by the +5C charge? b.what is the force exerted on the
asked by Jennifer 
COM200: Interpersonal Communication
concepts concerning the “self.” How do all these concepts relate to interpersonal communication? Also, give an example of how your “selfconcept,” “selfimage,” or “selfesteem” has affected your interpersonal communication.
asked by CHELLEY 
Physics(Please help)
What is the smallest number of whole logs (ñ = 725 kg/m3, radius = 0.0800 m, length = 3.60 m) that can be used to build a raft that will carry four people, each of whom has a mass of 60.0 kg? I do not know how to start this.
asked by Hannah 
geometry
The size of a bicycle is determined by the diameter of the wheel. You want a 22in bicycle for your birthday. What is the area of one of the wheels?
asked by briana 
physics ...plzzzz help...
Why is glass transparent to visible light but opaque to ultraviolet or infrared light ?? can anyone give me a detailed explanation for it coz i knw the general thing that because they have different wavelengths.....
asked by matin 
Physics(Please help)
A gas, while expanding under isobaric conditions, does 660 J of work. The pressure of the gas is 1.40 x 105 Pa, and its initial volume is 1.70 x 103 m3. What is the final volume of the gas? Would I multiply the two values?
asked by Hannah 
English II
What role does the oral tradition play in folklore?
asked by Marques 
English II
Define and give examples of myth and legend.
asked by Marques 
Chemistry
A calorimeter contains 30.0 mL of water at 11.0 degrees C. When 1.50 g of X (a substance with a molar mass of 65.0 g/mol) is added, it dissolves via the reaction: X (s)+H2O (l) > X (aq) and the temperature of the solution increases to 26.0 degrees C.
asked by Abby 
Physics(Please respond)
A system does 210 J of work on its environment and gains 80.6 J of heat in the process. Find the change in the internal energy of (a) the system and (b) the environment. Physics(Please respond)  Elena, Thursday, June 21, 2012 at 2:33am ÄU = Q  W Where
asked by Hannah 
chemistry
An 80.0gram sample of a gas was heated from 25 °C to 225 °C. During this process, 346 J of work was done by the system and its internal energy increased by 8905 J. What is the specific heat of the gas?
asked by cassie 
MICROECONOMICS
how does subsidy in education in govt. institutions affect financial aid for private institutions?
asked by Titir 
Art
Who is the artist of the relief sculpture, The Last Judgment, In Vezelay? I can't find it anywhere.
asked by Anonymous 
art
Looking at the examples from the Whitney collection, what qualities do the art work have in common?
asked by Nancy Reaves 
Chemistry
Calculate the pressure, in atmospheres, of 2.80 moles helium gas in a 18.0 liters container at 24 degrees celcius.
asked by Christinaa 
Science
What happens to approximately 60% of the energy released during the complete oxidation of glucose? A) It is used to synthesize more ATP. B) It is reused to supply the energy for anabolic reactions. C) It is stored in the body as fat. D) It is lost by the
asked by Marissa 
physics
a 840 N crate rests on the floor how much work is required to move it at constant speed 5.5m along the floor against a friction force 180 N?
asked by brl 
English
I'm needing help editing a couple of paragraphs for a descriptive essay. These are the instructions I was given: Mark up the paragraphs with specific observations and comments regarding general writing issues, but give specific comments related to
asked by Anonymous 
physics....
Cherenkov radiation is light emitted by a particle moving through a medium with a speed greater than the speed of light in the medium. (Note: The speed of the particle is not greater than the speed of light in a vacuum.) Consider a beam of electrons
asked by matin 
statistics
for a population with mean of u=50 and a standard devation o=8,find the following raw scores corresponding to each of the following z scores. z score 2.50,.50,1.50,.25,1.00,.75 find the raw score(x) of the above numbers
asked by irene 
physics
pipe to know how the inner diameter changes. Rank in order from largest to smallest the gas speeds va, vb, and vc at points a, b, and c. Explain in complete sentences.
asked by steph 
Grammar ( Need help Ms. Sue )
Directions: Read each passage and ask yourself, ''What is the author doing in this paragraph?'' Write each anser in the summary box and then think of an appropriate title for the passage based on the main idea of the passage. 1 A penny for your thoughts?
asked by Losa