# Questions Asked onFebruary 4, 2010

1. ## physics

Four identical charges (+2.0ìC each) are brought in from infinity and fixed to a straight line. The charges are located 0.40 meters apart. Determine the electric potential energy of this group.

2. ## Algebra I

After a baseball is hit, the height h (in feet) of the ball above the ground t seconds after it is hit can be approximated by the equation h=-16t^2+70t+4. Determine how long it will take for the ball to hit the ground. Round your answer to two decimal

3. ## Math-definition

What is the prime factorization of a number?

1) If a 10. m3 volume of air (acting as an ideal gas) is at a pressure of 760 mm and a temperature of 27 degrees Celsius is taken to a high altitude where the pressure is 400. mm Hg and a temperature of -23 degrees Celsius, what volume will it occupy?

5. ## Social Studies

I am doing a crossword puzzle: THe cause of the Panic of 1837 was ? or too many people buying too much land with too little collateral. It starts with an O and has 15 letters?

6. ## algebra

using 9 odd numbers the total should be 90

1) An ideal gas occupies a volume of 0.60 m^3 at 5atm and 400K. What volume does it occupy at 4.0atm and a temp of 200K? I know how to find the volume with the m^3 and the atm but it threw me off since it gives the 4.0 atm and the temp 200K.

8. ## PHYSICS 131 #2

a jetliner, traveling northward,is landing with a speed of 69m/s.once the plane touches down, it has a 750m runway in which speed is reduce to 6.1m/s. compute the avgerage acceleration (magnitude and direction) of the plane during landing.

9. ## arithmetic

what is the explicit formula of the sequence 3,1,-1,-3,-5

10. ## chemistry

when 25.0 of lithium iodide completely dissolves in water how much heat is evolved

11. ## physics

If there is just one force acting on an object, does its work necessarily result in an increase in kinetic energy? Explain. (Select all that apply.) 1.Yes, when a force does work on an object it always results in an increase in kinetic energy. 2.The work

12. ## trig

A population of wolves in a county is represetned by the equation p(t)=80(0.98)^t. where t is the number of yers since 1998. predict the number of wolves in the population in the year 2008.

13. ## Biology

c. The cytoskeleton of eukaryotes serves many functions. One of these functions is served in eukaryotes by a different major structure. Which structural feature is it? How do these different structures serve the same function in the two cell types? Is it

14. ## math

what is a termites favorite breakfast?

15. ## College accounting

What are the major functions or activities performed by accountants in a private industry?

16. ## Social studies

The origin or history of social studies in britain

17. ## programming

java, write a program that prints out the letter X composed of asterisks (*) reply soon

18. ## Calculus

Evaluate the indefinite integral. (5dx)/(xln(2x))

19. ## chemistry

By means of what single reagent could you distinguish between the following? (Tell what happens to each substance.) Solutions: AgNO3 and Zn(NO3)2 H2SO4 and HNO3 Ag(NH3)2Cl and AgNO3 Solids: AgCl and ZnCl2 AgCl and Hg2Cl2 PbCrO4 and K2CrO4

20. ## English

Which of the following italicized words is correctly capitalized? I think it is D. is that correct? Thanks or your help.. A. Mount mckinley is the tallest mountain in North America. B. The most beautiful State is Hawaii. C. Marsha speaks excellent german.

21. ## mgmt 470

Create a table and analyze environmental factors

22. ## chemistry

5.0 moles of a gas is put into a container of 2.0L. More gas is added to the flask s othat there is now 15 moles of the gas present. What must the new volume be if temperature and pressure are to remain constant?

48. ## math

a trianglar course for a sailing race is marked off by buoys. The first lef is 250 meters longer than the second and the third leg is 100 meters shorter then the first. if the length of the course is 2500 meters, find the length of each length

57. ## electrical and electronic engineering

investigate the impact of photovoltaic system on low voltage distribution network in Malaysia.

58. ## math

i have 78% in the course the exam is worth 30% and i got 65% what is my overall mark in the course

59. ## engish 1

in "Salvation" by langston I am suppose to tell whether the point of is from a view of someone "going on thirteen" or from the point of view of a mature man? Give evidence to support your opinion. i think it is a mature man, langston hughes himself because

60. ## science

what happens to the population of butterflies after a predator comes through? answer must include the words, gene and natural selection

61. ## English

Thank you very much for your last corrections! Can you please check these other ten paragraphs for me? 1)One day a man in a sport car approached a bend at top speed. He lost control of the vehicle, which jumped over a fence and fell into the river below.

62. ## Calculus

Let f(x) = 3(x^6)lnx. f'(x)= ...

63. ## Social studies

Origin of social studies in britain

64. ## science

compare digestion and respiration. how would unhealthy teeth or germs affect digestion. how are the digestive and circulatry system alike. explain how the heart and lung help each other provide oxtgen to the body.

65. ## descriptive paragraph

Am i on the right direction? Descriptive paragraph Deborah Paul A loyal Friend My loyal friend Mary Ellen is 48 years old with shoulder length black hair and dark brown eyes. Mary Ellen is very short standing at 5'0 in height and a stocking build. She has

66. ## world history

WHY DID THE INDUSTRIAL REVOLUTION BEGIN IN BRITAIN

67. ## Writing

How can confidence and determination help succeed in school?

116. ## PHYSICS 1112

A cube of side length L = 10 cm is centered at the origin of an x,y,z (cartesian) coordinate system. The electric potential V (x, y, z) is measured at the centers of the six faces of the cube to be the values shown below. Using this information, estimate

117. ## Science-Pendulum

I have to do a conclusion for this as well. It says Do Lock Step, what does that mean?

119. ## physics 2

The inner and outer surface of a cell membrane carry a negative and a positive charge, respectively. Because of these charges, a potential difference of about 0.070 V exists across the membrane. The thickness of the cell membrane is 8.0 × 10−9m. What is

156. ## College Physics

How do I solve this problem: A particular wire has a current of 10A. A) How many electrons pass a fixed point every 5 seconds? B)If a wire has a radius of 2 x 10^(-3) m and the electron drift speed is 2.63 x 10^(-5) m/s, determine the number density of

157. ## English

1. He has learned Chinese this year. 2. He has learned Chinese for three months this year. (Is the meaning of "has learned' the same in #1 and #2? If it is November, does #1 mean that he is learning Chinese in Novemver? How about in #2?)

158. ## math- algebra

simpilfy the expression: [4x7]4 four and severn are the exponents

159. ## College Physics

A current exists in a wire that gradually narrows down to a smaller diameter. How do the drift velocity, the current density, and the electric field vary along the wire? Can you please help explain this?

160. ## math- algebra

simpilfy the expression: [4x7]4 four and severn are the exponents

161. ## english 10

Explain how The Federalist Papers would have been more or less successful if newspapers had been printed monthly (rather than daily or weekly).

162. ## Science/Math

Can someone please have a moment to look at my other previous posts. Please take your time to look through them, thanks

163. ## Introduction to Security

Can any target environment ever be 100% stable or 100% predictable

189. ## science

which would have a more difficult time maintaining body weight at a cooler tempertature a mouse on a diet including ptu and a mouse on a regular diet

190. ## essential mathematics 1

simplify of complex fractions 5/8 5= 5/8 divide by 5= 5/8 divide 5/1= 5x5=25 8x1=8 is this right or no need help

What is the timeline of chapters 13 through 18 of The Scarlet Letter? Please i need this by Tomorrow.

192. ## environmental science

Hydronium ions are composed of OH- H+ H2O Which one

193. ## chemistry

how do you find the number of neutrons in an element's atom?

194. ## Social Studies

Who were major people that took part in colonization of Africa between 1800-1914?

195. ## Social studies

How did social studies began in britain. i.e the history of social studies in britain

196. ## Physics

A particle is in uniform circular motion about the origin of an xy coordinate system, moving clockwise with a period of 3.50 s. At one instant, its position vector (from the origin) is r = (8.00 m) ihat - (7.00 m) jhat. At that instant, what is its

197. ## chemistry

how do you find the number of neutrons in an element's atom?

198. ## Calculus

Find the area of the region which is bounded by the polar curves theta =pi and r=2theta 0

199. ## Social Studies

Who were major people that took part in building the Suez Canal? Was it Ferdinand de Lesseps???

what does transfusion

201. ## Physics

When an air capacitor with a capacitance of 300 nF (1 {\rm nF} = 10^{-9}\;{\rm F}) is connected to a power supply, the energy stored in the capacitor is 1.95×10−5 J. While the capacitor is kept connected to the power supply, a slab of dielectric is

202. ## Physics

Four 50-\mu {\rm{C}} charges are brought from far apart onto a line where they're spaced at 2.0-{\rm cm} intervals. How much work does it take to assemble this charge distribution?

203. ## accounting 220

Final Project: Final Project • Resources: Appendix A • Due Date: Day 7 [post in the Individual forum] • Write a 700-1,050 word paper, using APA guidelines, based on following scenario. You want to start your own business. You found an investment

204. ## Calculus

Let f(x)=(x+7)/(x+5). inverse f-1(-3)=...

205. ## math

The perimeter of a triangle is 26 c,. Side a of the triangle is 3 cm longer than side b. Side c is 1 cm shorter than twice side b. Find the length of each side.

206. ## calculus

Concept of FUNCTION (with atleast two examples) in every day life

207. ## Math-Definition

Why must we find a common denominator when add/subtract fractions?

208. ## Math

judy and ramey together have 42 stuffed animals. judy has 12 fewer animals than ramey. how many stuffed animals does each girl have?

209. ## maths

The ratio of oranges and bananas is 3:6. There are 54 pieces of fruit altogether, how many of them are oranges? Do I set it up 3/6 times x/54?