# Questions Asked onAugust 31, 2007

1. ## Calculus

Use the position function s(t)=-4.9t^2+ 150, which gives the height (in meters) of an object that has fallen from 150 meters. Teh velocity at time t=a seconds is given by: lim as t approaches a s(a)-s(t) divided by a-t a) find the velocity of the object

A charge of -3.00 µC is fixed at the center of a compass. Two additional charges are fixed on the circle of the compass (radius = 0.135 m). The charges on the circle are -3.20 µC at the position due north and +5.00 µC at the position due east. What is

3. ## Physics

I don't really understand this aspect of physics yet, I need help understanding these problems. Problem One: Two particles, with identical positive charges and a separation of 2.00 10-2 m, are released from rest. Immediately after the release, particle 1

4. ## Microeconomics

Two centuries ago there were more buffalo than cattle in the United States. Even though millions of cattle are killed for beef consumption each year, the catttle population continues to grow while the buffalo are virtually extinct. why? Explain in

5. ## English-Beowulf

Who is Scyld? Where is he from? Where does he go? What does he do? Why does the poem begin here rather than with Hrothgar and Grendel? Scyld id Beowulf's father. Scyld was a Danidh king from the Scandion Lands. Scyld leaves to protect Lord Frea where he

6. ## Analytical Chemistry

Predict the effect (Increase, Decrease, No effect, Indeterminate)and explain why 1. Condition: In the determination of water hardness, the water sample contained appreciable amount of ferric ions Paameter: ppm CaCO3 2. Condition: Instead of MgCl2*H2O,

7. ## chemistry

The phosphorus in a completely dried fertilizer sample weighing 0.4498 grams was precipitated as MgNH4PO4*6H2O. The precipitate weight was determined to be 236.8 mg and ignited to Mg2P2O7. The weight of the ignited precipitate was 268.9 mg. Calculate the

8. ## physics

1:Negative clipping of an output signal occurs when the A. output impedance is too high. B. input impedance is too high. C. input amplitude is too high. D. power supply voltage is too high. 2: Which of the following is essential for the operation of an

9. ## science(chem)

CH3CHClCH2Cl vs. CH2ClCHClCH3 How would I know if : -The two formulas represent different compounds which are constitutional isomers. -The two formulas represent different compounds that are not isomeric. -The two formulas represent the same compound. ~if

10. ## math

What does "range" mean? thanks =o)

11. ## Physics

please tell me where I went wrong. A proton is moving parallel to a uniform electric field. The electric field accelerates the proton and increases its linear momentum to 5.0x 10^-23 kg m/s from 1.4x 10^-23 kg m/s in a time of 6.5x 10^-6 s. What is the

12. ## ESL

Which one is right: Do you need any sugar or Do you need a sugar?

13. ## science (chem)

I have a problem drawing this formula. CH3CH2CH2CH(CH3)CCCH3 The problem is the 2 c's next to each other. I don't know what that's supposed to look like since if it's 1 CH like with the bracketed CH3 it would be connected to that C but I'm confused as to

14. ## Algebra

Complete the order pairs so each is a solution for the given equation 3x + 4y = 12 these are the numbers ( ,3) ( ,3/4) ( ,0) and (8/3, ) need to fill in the missing numbers

15. ## Chemistry

What is he differeence between a graph representing data that are directly proportional and a graph of data that are inversely proportional?

16. ## chemistry

Predict the effect (Increase, Decrease, No effect, Indeterminate)and explain why 1. Condition: In the determination of water hardness, the water sample contained appreciable amount of ferric ions Paameter: ppm CaCO3 2. Condition: Instead of MgCl2*H2O,

17. ## english beowulf

Who destroyed the Heorot and how? My answer: I think Grendel destroyed the Herot but I am not sure how. This story is hard to comprehend!

18. ## Science

A man drinks a bottle of beer and proposes to work off its 460 kj by exercising with a 20 kg barbell. If each lift of the barbell from chest height to over his head is through 60 cm and the efficiency of his body is 10 percent under these circumstances,

19. ## Algebra

when x number units are sold, the price of each unit (in dollars)is given by P = -x/2 + 75, find the unit price when the quantities are sold: 2,7,9,11

20. ## race

In your opinion, is it difficult to accurately measure prejudice? Why or Why not? Describe other measurements sociologists use to calculate prejudice.

21. ## math

Here's an algebra question I need help on. I just need someone to explain how to get started...you don't have to solve it for me. I just don't know how to get the answer! Greta has a vegetable garden. She sells her extra produce at the local Farmer's

22. ## analytical chemistry

Predict the effect (Increase, Decrease, No effect, Indeterminate)and explain why 1. Condition: In the determination of water hardness, the water sample contained appreciable amount of ferric ions Paameter: ppm CaCO3 2. Condition: Instead of MgCl2*H2O,

23. ## Spanish

Can someone help me translate this sentence? It was in a packet we were given for reading but I don't think I'm understanding it correctly. La crisis del Imperio Romano facilitó la invasión de España a partir del año 409 d.C., por varios pueblos

24. ## human services

what would be some examples for theoretical models?

25. ## Effects of Religion

• Religion can affect people in many different ways. List at least two effects that organized religion has had on society and give examples from past and/or present world events that illustrate your examples.

26. ## Algebra 1

Write the equation of the line with slope -2 and y-intercept (0,0).Then graph the line.

27. ## MATH

I NEED HELP WITH A CAT AND WHISKER BOX THING I JUST NEED AWAY TO LEARN AN EASIER WAY TO DO IT CAN YOU HELP !!!!PLEASE!!!!!

28. ## Algebra

Celsius temperature readings can be converted to Fahrenheit readings using the formula F = 9/5c + 32, what is the Fahrenheit temperature that correspond to each of the following celsius temperatures: -10,0,15,100

29. ## ethnic class

1) according to pyne, how have post 9-11 government responses affected prejudice and discrimination against muslims,arabs,and related groups? (2) List two to three characteristics of orientalism. How may orientalism and prejudice contribute to hate crimes

30. ## Grammar

I would like for someone to check this and make sure that I have this right. I had to rewrite the sentence that was not righ. Dangling Modifiers: If your baby dow not like cold apple juice, it should be heated. Your answer: If your baby does not like cold

31. ## Algebra 1

Complete the ordered pairs for the equation 2x+y=10.(5, ),( ,10),( ,-2), (0, )

32. ## english

Alzheimer's Something i became more aware of was Alzheimr's Disease.This disease gradually destorys a person's memory and ability to learn and carry behavior . There aren't any cures for the Alzherimer diease and researchers can't predivt how fast somewill

33. ## Finance

Nancy Tai has recently opened a revolving charge account with MasterCard. Her credit limit is \$1000, but she has not charged that much since opening the account. Nancy hasn't had the time to review her monthly statements as promptly as she should, but over

34. ## chemistry

how would I determine the hybridization of the carbon atom if it has 3 single bonds with hydrogen and no free electrons? Do I draw this out??

35. ## esl

Is there any mistake in my sentence? Q: I get up always early?

36. ## lae school

a storm front went through and the temperature dropped 10celsius in 3hr. If the temperature started at 6celsius, what was the temperature after the 3hr?

37. ## physics

How do i go about this problem? a car starts from rest at a constant velocity and reaches a velocity of 25 m/s when it reaches 180 meters. What will be the velocity when it continues another 95 meters? Thanks

38. ## Accounting

How do I entry a provion Its an Asset ?

39. ## Science

Hello, where could I find the answer to this question? In which season would we expect to see the highest and lowest and why. Thanks

40. ## Chemistry

I am a teacher and we did an observational activity in which we placed salt and food coloring on a big piece of ice. We observed it using a flashlight for awhile. Afterwards when we turned the lights on the salt with RED food coloring had a beautiful green

41. ## chem

Is it easier to separate substances from concetrated or dilute solutions?

42. ## history

When and where did people still believe the world is flat? I thought they did in Columbus's time, but I guess that was a myth? According to the page I read on wikipedia people believed the world was flat mostly only during the Classical Antiquity. But in

43. ## calculus

We were asked to solve the problem 1/x < 4. I solved it like so: 1

44. ## Projects

PLZ HURRY AND ANSWER THIS Q!!! I DON'T HAVE MUCH TIME LEFT TO DO MY PROJECTS!!!! Q: What are the rates of going to the Great Smokey Mountains?

45. ## calculus

how would you find an equation for a circle that passes through the origin and has intercepts equal to 1 and 2 on the x and y axes

46. ## english

edit this paper Alzheimer’s Something I became more aware of was Alzheimer’s Disease. This disease gradually destroys a person ’s memory and ability to learn and carry out daily activities . In the long term it ,effectively changes your personality

47. ## Developmental Language

Is this an example of underextension or an example of overextension: Davis went to the park with his Dad and their dog,Sport. Davis saw lots of other dogs,pointed at them,and said, "Sport." Was Davis showing underextension or overextension?

48. ## follow up(for Count Iblis)

i have a follow up question for a previous post How do you know 2B is (20 "+" B) and not (2 "x" B) _______________________________________ to me this question does not make sense... it comes from a review packet for the SAT

49. ## ESl

Which one of the following is right? - I don't have much furniture in my apartment or - I don't have many furniture in my apartment

50. ## math

How can ou change numbers into percents then into degrees? For example the number is 90. Percent is ? Degree is ?

51. ## Esl

Are these correct sentences? Q1: I hate clean the house. Q2: He's having two good friends.

52. ## PROJECTS

What are some fun places to go to in VA? Please name 2-4.

53. ## Projects

Hi! Good Morning! Q: What are the rates of taking a tour in the "Arbingdon Vineyard and Winery?" It's for my project. :) The Vineyard and Winery are in Arbingdon, Virginia. Thanks!

54. ## chemistry

Please help me through this problem... A 0.5117 gram fertilizer containing phsphorus was oven dried. The weight of the dried sample is 0.4998 grams. However, 10% moisture is still retained in the sample. Calculate the moisture content in the sample in as

55. ## math

to me this question does not make sense... it comes from a review packet for the SAT _______________________________________ Q: If 299 is divisible by 2B, and B represents a positive digit, what is the value of B? a.) 2 b.) 3 c.) 4 d.) 6 e.) 9

56. ## grammar

What is a pargraph break

57. ## PERSONAL FINANCE

Bernie and Pam Britten are a young married couple beginning careers and establishing a household. They will each make about \$50,000 next year and will have accumulated about \$40,000 to invest. They now rent an apartment but are considering purchasing a