Eileen

Most popular questions and responses by Eileen
1. physics

A 1000 kg car is rolling down the street at 2.5 m/s. How fast would a 2500 kg car have to collide into it in order to bring it to rest (0 m/s)?

2. Chemistry

Consider the following chemical reaction: C (s)+ H2O(g) --> CO(g)+ H2(g) How many liters of hydrogen gas are formed from the complete reaction of 1.20 mol of C? Assume that the hydrogen gas is collected at a pressure of 1.0 atm and temperature of 310 K.

3. Calculus

Evaluate integral(5x-5/3x^2-8x-3) dx.

4. Physics

Two electrons are fixed 2cm apart. Another electron is shot from infinity and comes to rest midway between the two fixed electrons. A)Find the energy of the system initially( unknown quantity leave as a variable) B) Find the final energy of the system?(

5. Chemistry

Name the following: CH3CH2CH(OH)COOH CH3OCH2CH2CH3 C4H9O(C=O)CH3

6. Chemistry

Oxygen gas reacts with powdered aluminum according to the following reaction: 4Al(s)+3 O2(g) --> 2 Al2O3 (s) How many liters of O2 gas, measured at 789 mm Hg and 35 C, are required to completely react with 2.2 mol of Al?

7. Circuits Problem (Physics)

h t t p ://img266.imageshack.us/my.php?image=circuit2ru6.png Given the circuit above: a) Solve for unknown currents. b) What is the potential difference between points a and b? c) If both batteries start with 20 A*h of charge, how long does it take the

8. Calculus

If a ball is thrown into the air with a velocity ofc 40ft/s,its height in feet after t seconds is given by y=40t-16t^2. Find the velocity when t =2. Could you please show the steps

9. PSYCHOLOGY

Review the case scenario provided in the Learning Resources and focus on the various budget expenses related to personnel services. Review Chapter 3 of your course text, The Basics of Public Budgeting and Financial Management, and the budget template

10. physics

What must the water pressure be to supply water to the third flor of a buiking 35.0 ft up with a pressure of 40.0 lb/in(2) at that level? I have the answer,but I need to know how to get the answer. thanks

11. Physics

a force of 400 N Pushes on a 30 kg box. Starting from rest, the box attains a speed of 4 m/s in 5 seconds. determine the mu between the box and floor.

12. Physics

A 2010 kg car traveling to the west at 18.5 m/s slows down uniformly under a force of 8880 N to the east. a) How much force would be required to cause the same acceleration on a car of mass 3120 kg? How far would the car move before stop- ping? Answer in

13. PLANNING AND BUDGETING

Week 3 Application: Case Scenario Capital Improvement Plan Background Every two years, the city prepares a capital improvement plan (CIP), which forecasts capital improvement needs, revenues, and expenditures. This year you have been asked to submit

14. Biology

The half -life of carbon-14 is 5,730 years.how much of an initial amount of this substance would remain after 17,190 years(3 Half-lifes

15. College Chemistry

What mass of ice, at 0.00 C can be converted to steam, at 100 degrees C, if it absorbs 1.00 x 10 (to the 6th power) Jules of heat energy? How do you find the mass of ice?

16. Science

A 5.0ml aliquot of a sample was transferred to a 25.0ml flask and acidified by addition of 2.5ml of 0.1M HClO4 and diluted to mark. 1.0ml of that solution was mixed with 5.0ml of 1 X 10-4M AYR(Aluminum)dye and 15.0ml ethanol in a 25.0ml flask and diluted

17. Math

Use Part 1 of the Fundamental Theorem of Calculus to find the derivative of the function h(x)=integral [2,1/x]sin^4t dt

18. Continued physics problem from before (way down)

Posted by Eileen on Sunday, April 13, 2008 at 10:05am. I am trying to do these 2 problems. I'm starting out with the RC Circuit (2nd one): h t t p ://img201.imageshack.us/my.php?image=circuit5ij7.png *delete spaces or link won't load! a) The capacitor acts

19. science

can you unscramble the following letters to name a six legged animal pergorsaph

20. Chemistry

When acetic acid reacts with sodium hydroxide, what are the two products that are formed?

21. conceptual chemistry

the density of air at 25dergees C and 1 atmosphere of pressure is about 1.18 g/L. What happens to the dnesity of air as the temperature is increased. When the pressure is incrased?

Find a degree 6 polynomial with - 8 as a root, no other roots, and in which the coefficient of x^6 is 16. Assume that all (non-constant) factors of the polynomial correspond to real zeroes.

23. Math urgent

Find a degree 6 polynomial with - 8 as a root, no other roots, and in which the coefficient of x^6 is 16. Assume that all (non-constant) factors of the polynomial correspond to real zeroes.

24. Math

Evaluate the difference quotient for the given function. f(x)=1/x, f(x)-f(a)/(x-a). Is the answer 1

25. Calculus

Diffentiate the function F(x)=(1/2x)^5 My answer is 5/2x^4. The book says 5/32x^4. what am I doing wrong?

26. math

make a line plot for each set of data. Identify any clusters, gaps and outliers. daily low temperatures 26F, 25F, 24F, 29F, 28F, 21F, 10F number of stories in town buildings 3, 3, 1, 1, 8, 6, 6, 4, 3, 23, 7, 9

27. Calculus

Evaluate integral(3x^2-28x-3)/(x^3-2x^2-3x)dx.

28. planning and budgeting

I need to know 8 questins that would be asked by a city council meeting related to a new criminal justice facility. (political, tax, demographic, and administrative questions)

29. physics

Calculate the mass of the Earth, if it had a radius of 3000 km and a gravity of 6 m/s^2.

30. Physics/Force

building a device to shoote a plastic hockey puck with a lever (think pinball) attached to a bungie cord. How much force is needed to propel a plasic hockey puck 30 feet or 40 feet or 50 feet - what formula should I use? Can I calculate the force by how

31. Math

Simplify 2x+1/2*sqrt(x-2)-2*sqrt(x-2)/(2x+1)^2

32. Math

Determine the slope of the tangent line to the curve y=2x^3-3x^2+1 at the point (1,0)

33. Calculus

differentiate the function R(x)=sqrt(10)/x^7

34. Math

Determine the slope of the tangent line to the curve y=2x^3-3x^2+1 at the point (1,0)

35. Chemistry 101

What is the function of lipids and cells?

36. Chemistry 101

Give an example of a hydrophobic group and a hydrophilic group.

37. Circuit Problem- Physics

I am trying to do these 2 problems. I'm starting out with the RC Circuit (2nd one): h t t p ://img201.imageshack.us/my.php?image=circuit5ij7.png *delete spaces or link won't load! a) The capacitor acts as a bare wire with no resistance, so: I=V/R=V/(4/5R)

38. Short Circuit Problem (Physics)

Thanks so much for all your help damon! I think this is my last one: h t t p ://img408.imageshack.us/my.php?image=circuit1al8.png The reading of the ammeter is 2 A. The reading of the voltmeter is 33 V. Determine the unknown resistance and emf (picture

39. Algebra

What is the pattern for the next three numbers for -1, 2, -4, 8 ____, ____, ____? Thanks!

40. science

unscramble pergorsaph to make a six legged animal

41. Physics

How to attach a file with circuit diagram questions ?

42. college calculus-initial value

dy/dx=cos(7x)+5/pi initial condition y(pi/4)=2

43. Math

Differentiate the following function (1/x)-(2/x^2)+(3/x^3) I got (-9x-3)/x^5

44. science

Estimate the pH of water in equilibrium with CO2 with a concentration of .008867M. Use equilibrium concepts to estimate? Is Kc equilivate to the pH?

45. Math

Find the critical numbers of the function s(t)=3t^4+4t^3-6^2

46. Calculus

Determine the slope of the tangent line to the curve y=2x^3-3x^2+1 at the point (1,0)

47. Calculus

Find those values of x at which the tangent line is horizontal to the curve y=xsqrt2-2cosx

48. [Physics] super hard/long circuit problem

I have this last one which is really long/hard. It's so long that I just decided to scan the whole problem. So here it is... and thanks everyone for the help so far! h t t p ://img201.imageshack.us/my.php?image=circuit5ij7.png *remember to delete spaces or

49. Social studies

What is one main difference between a presi9 and a prime minister?

50. gramman

Why does this pie have less or fewer peaches than the others. Grandmother took my brother and I or me to buy candles

51. grammar

What is the verb in this sentence? Unlike rita, she had very few friends.

52. Lab Porcedures

A small sample taken from the body and placed on a medium to allow bacteria growth is a A. profile B. culture C. serum D. specimen Is B correct

53. calculus

Decompose 58-x/x^2-6x-16 into partial fractions.

54. economics

where can I find current gross domestic product percentages to consumption, investment, defense and foreign trade for Germany & Switzerland for the past five years so I may analyze the info

55. college calculus-initial value

dy/dx=cos(7x)+5/pi initial condition y(pi/4)=2

56. region and landforms

which region is known for its highestand lowest landformand temp in the US?

57. Math

Find absoulute maximum and absolute minimum of the function f(x)=2cost+sin2t

58. Calculus

Differentiate the function f(t)=1/4(t^4+8). My answer wa 4t^3. The book says t^3. What am I doing wrong,

59. math

how do i go about converting 2341base5 to base 10?

60. Chemistry

Why do amines exhibit high solubility in water?

1. geometry

The rafters of a roof meet at a 70° angle. The rafters form part of a isosceles triangle. What is the measure of one of the base angles

posted on March 29, 2015
2. history

Liberty League running Alfred M. Landon

posted on September 17, 2014
3. Physics

I've tried over and over and get mu = .36 which I know is wrong. (Supposed to be .51) What am I doing wrong?

posted on December 14, 2011
4. math

This fraction reduced is 3/4. Take the numerator and the denominator and find the common number that you can divide by and then divide by this. I used 6 18 divided by 6 is three and 24 divided by 6 is 4. If you need more you can also multiply the top and

posted on May 15, 2011
5. PLANNING AND BUDGETING

I need help on startig it a lay out then I can go from there. Do I write it out or is it a spread sheet I don't get the concept please help

posted on May 8, 2011
6. Physics

rotor ride a cylinder of radius 3m is rotation at a linear speed of 15 m/s. What minimum coefficient of static friction is required to keep the participant from slipping?

posted on April 3, 2011
7. Calculus

(ã2)x - 2cosx

posted on July 1, 2010
8. Industrial Revolution

pretend that another industrial revolution is waiting to happen right now in 2009 all we need is one good invention to get it underway. make up an invention in your head that you think would spark it. what would this invention be,how would it work, what is

posted on February 21, 2009
9. word unscramble

bonspeq pleasee help me what i sthis word?

posted on November 1, 2008
10. math

Hello can you help me in discounts prices

posted on May 29, 2008
11. Continued physics problem from before (way down)

So when switch is closed, the inductor acts as a block (or open circuit in that branch)? And when it is opened after a long time, it acts as a bare wire?

posted on April 13, 2008
12. Circuit Problem- Physics

The questions is in the link I gave above. Here it is again (you have to delete the spaces in 'h t t p :'): h t t p ://img201.imageshack.us/my.php?image=circuit5ij7.png

posted on April 13, 2008
13. social studies

Are the 5 themes of geography location, place, human-environmental interactions, movement, and regions? And in answer to each of the 9 questions you gave, do you want the actual answer to the question, or merely a statement of one of the above listed five

posted on April 13, 2008
14. Short Circuit Problem (Physics)

ty so much dan!

posted on April 12, 2008
15. Circuits Problem (Physics)

omg! thankss!!

posted on April 12, 2008
16. Circuits Problem (Physics)

hi, i put spaces between the "h t t p :" because it wouldnt let me post it otherwise. if you delete the spaces it should load (i hope!).

posted on April 12, 2008