1. Physics

There is a proton that is at the origin and an electron at the point x= 0.42nm and y=0.36nm. Find the elctric force on the proton for Fx and Fy. For my total force I got 7.53*10^-11N For my x direction I got 5.8 *10^-11N, and for my y dirction i got 5.1

2. chem

What VSEPR “shapes” and bond angles do you find in Toluene?

3. MATH Prob.

A class elects two officers, a president and a secretary/ treasurer, from its 12 members. How many different ways can these two offices be filled from the members of the class?

4. Math

The perimeter of a rectangular field is 302 yards. If the length of the field is 84 yards, what is its width?

5. physics

does the slope of a distance vs. time graph show the average velocity or the instaneous velocity I'm asked the question and don't know which one. I believe that it would be the instaneous value because the slope is refering to one point on the graph... not

6. hISTORY

Which of the following had the greatest impact on women's lives after World War I? A. New Deal programs B. labor-saving devices C. equal-opportunity laws D. the creation of many new jobs

7. Physics

There is a proton that is at the origin and an electron at the point x= 0.42nm and y=0.36nm. Find the elctric force on the proton for Fx and Fy. For my total force I got 7.53*10^-11N For my x direction I got 5.8 *10^-11N, and for my y dirction i got 5.1

8. Differential calculus

Given that f(x)=x, g(x)=x-1: h(x)=sqrt(x-1) find f0g0h.

9. Math

I need to find the missing length of a right angle if one side is 7 and one is 25?

10. MATH Prob.

The number of accidents that occur at the intersection of Pine and Linden streets between 3 p.m. and 6 p.m. on Friday afternoons is 0, 1, 2, or 3, with probabilities of 0.84, 0.13, 0.02, and 0.01, respectively. Graph this probability distribution. What is

11. Physics

A -3.5 uC charge experiences a 13N i hat electric force in a certain electric field.What would the force be for a proton experience in the same field? I amd doing this 13/-3.5=-3.7 then multiplying 1.6*10^19 where did i go wrong

12. Differential calculus

Given that f(x)=x, g(x)=x-1: h(x)=sqrtx-1. find f0g0h.

13. science

ok my summer homework is to explain how the si system is used in the scienetific community. HELP!

14. social studies

Farming to obtain food requires time. This leads people permanent villages. Which of the following native-american groups developed settlements due to their farming practices?

15. statistics

A random sample of 10 observations has been drawn from a normal population, and the sample variance is found to be s² = 19.5. Determine the 98% confidence interval for ó².

16. MATH Prob.

Five numbers are to be picked, without repetition, from 44 numbers to determine the winner of the Fortune Five game in the state lottery. If the order of the numbers is insignificant, how many different ways can a winning quintuple be selected? What is the

17. Physics

ok were doing a lab h t t p: / /i m g2 0 0. i m a ge s h a c k. u s / im g 2 0 0 / 30 3 8 /s k e t c h 2 p q g. j p g the timer in the picture makes a mark on the tape at a set interval... my question is well what is actually is happening is that I'm

18. history help plz

Although it put many farmers out of work, the _____ made English farming more productive.

19. Math

A tree casts a shadow that measures 5 m. At the same time, a meter stick casts a shadow that is 0.4 m long. How tall is the tree?

20. math

A tree casts a shadow that measures 5 m. At the same time, a meter stick casts a shadow that is 0.4 m long. How tall is the tree?

21. statistics

For three independent samples, each with n= 100, the respective sample proportions are 0.30, 0.35, and 0.25. Use the 0.05 level in testing whether the three population proportions could be the same.

22. Physics

There is a figure q1= 23 uC and q2= 16 uC. The force on q1 points in the -x direction. q1 is at (0,1) q2 is at (2,0) q3 is at (2,2) What is the magnitude of the force on q1? I am doing this (9*10^9)(23*16)(-4ihat)7^3 where did i go wrong?

23. MATH Prob.

Battery Power Problem. A certain type of thermal battery for an airplane navigation device backup power has a mean life of 300 hours with a standard deviation of 15 hours. What proportion of these batteries can be expected to have lives of 322 hours or

24. MATH Prob.

A ship carries exactly 10 different signal flags. If each possible combination and ordering of 4 of these flags connotes a specific message, how many signals can be sent with these flags, taken 4 at a time?

25. science

Describe the benefits of the human genome project.

26. Math

I need to know the square root of 196.

27. Math

Consider the function y=sqrt(1+cos2x)/2 (everything is under the square root) a. Can x take on any real value? b. How large can cos 2x become? How small? c. How large can 1+cos2x/2 become? How small? d. What are the domain and range of the original

28. science

how do scientists use measuremnets?

29. math

y=x^2e^x I am suppose to find the dy/dx of this the way i did it was x^2e^x times dy/dx of x^2 and got x^2e^x times 3x^2 this is not right and im confused on how to solve it help pls.

30. Algebra

Could someone work this out for me? Someone says the answer is 2.34 x 10^-6 but I think it's 2.34 x 10^-4. 2 x 10^-3 = 3 x 10^8 x 1/6 x pi x d Solving for d. Sorry it's kinda messy.

31. geography

How does the study of other disciplines help geographers in their work as countries become increasingly interdependent?

32. statistics

A random sample of n= 12 is drawn from a population that is normally distributed, and the sample variance is s©÷ = 19.3. Use ¥á = 0.025 in testing ¥Ç₀ : ¥ò©÷ ¡ 9.4 versus ¥Ç©û : ¥ò©÷ > 9.4

33. MATH Prob.

The mean systolic blood pressure of adult males is normally distributed with a mean of 138 (millimeters of mercury) and a standard deviation of 9.7. What percent of adult males have blood pressure between 161.28 and 164.9?

34. MATH Prob.

A study of motor vehicle rates in the 50 states reveals that traffic death rates (deaths per 100 million motor vehicle miles driven) can be modeled by the normal curve. The data suggest that the distribution has a mean of 5.3 and a standard deviation of

35. science

What are the advances in the field of biology?

36. science

Describe how genetic engineering has been used to improve plants.

For df = 5 and the constant A, identify the value of A such that a. P(x² > A) = 0.90 b. P(x² > A) = 0.10 c. P(x² > A) = 0.95 d. P(x² > A) = 0.05 e. P(x² < A) = 0.975 f. P(x² < A) = 0.025

I=g^2/da

39. Differential Calculus

(1) lim x^3 - 125/x5 x^2 - 25 (2)find the inverse of the function f(x)=7x+5

40. A.P. Economics

Why must the opportunity cost of a decision always be something desirable?

41. statistics

A research organization has collected the following data on household size and telephone ownership for 200 U.S. households. At the 0.05 level, are the two variables independent? Based on the chi-square table, what is the most accurate statement that can be

42. PROBABILTY

WHAT IS AN EXAMPLE OF DISCRETE DISTRIBUTION AND CONTINUOUS DISTRIBUTIONS?

43. MATH Prob.

How many batting lineups of the nine players can be made for a baseball team if the catcher bats first, the shortstop second, and the pitcher last?

44. MATH Prob.

Estimate the number of personally constructed greeting cards possible at a machine if there are 12 designs, 30 messages, 18 closings, and 10 different paper stocks on which to print the card. Indicate how you made your estimate. How valid was your

45. Math

Jim rents a truck. There is a fee of \$15.99, there was an additional charge of 79 cents for each mile driven Jim had to pay \$172.41 when he returned the truck. For how many miles did he drive the truck?

46. English

Background Ten years ago, you started working as a clerk for DMD Medical Supplies. Six months ago, Liz Jakowski, the human resources director, promoted you to office manager. You manage two employees: Jack Snyder and Ruth Disselkoen. Your office provides

47. science

What is a therapeutic cloning and reproductive cloning?

48. Mechanics unscramble

Need help. I know this is 2 words related to safety. Please unscramble GSMSAHNIDRULEAOECC

49. Math

Gasoline accounts for 85% of the motor fuel consumed in the United States every day. If 8,882 thousand barrels (bbl) of motor fuel is consumed each day, how much gasoline is consumed each day in the United States? Round to the nearest barrel. I need help

50. Math

A school had 900 students at the start of a school year. If there is an enrollment increase of 7% by the beginning of the next year, what is the new enrollment?

51. Government

The constitution has comparatively little to say about the structure and composition of the supreme court. Identify two aspects of the court's structure and composition that the constitution does not specify.

52. Math

The United States emitted 19.5 million t of nitrogen oxides (NO) into the atmosphere in 1987. One metric ton (1 t) equals 1,000 kg. How many kilograms of NO were emitted to the atmosphere in the United States during 1987?

53. statistics

A random sample of n = 30 is drawn from a population that is normally distributed, and the sample variance is s©÷ = 41.5. Use ¥á = 0.05 in testing ¥Ç₀ : ¥ò©÷ = 29.0 versus ¥Ç©û : ¥ò©÷ ¡Á 29.0

54. physics

ok i'm doing a lab were walking different displacements I observed that the displacements were on different grades of steepness this would decrease the coefficent of kinetic friction?

55. check geo

some people in the french-speaking province of ________ are interested in gaining independence from canada. A. Nunavut B. Quebic C. Alberta D. Montreal .I chose B Quebec. Canada and the united states differ i thier: A. Population B. Climate C. Goverment

56. check geo

in the 1800s ___________ opened up the western united states to immagration and buisness. A. The transcontinental railroad B. The underground railroad C.Route 66 D.Cattle farming .The answer I chose was B .

57. check geo

what name is given to a system of trade in which individuals can operate and profit from buissness? a)communism b)free market economy c)surplus d)monopoly its b.

58. check geo

the united states is a leading exporter of : a)oil and natural b)rice products C)beef and grain d) cranberries and rasberries. i choose a

59. check geo

the united states is a leading exporter of : a)oil and natural b)rice products C)beef and grain d) cranberries and rasberries. i choose a

60. english

ive to evaluate the media by the following ways: a newspaper editorial a letter to the editor radio or television commercial a magazine advertisement ive to describe what does each one try to persuade you to believe or do. so where can i find on net all

61. Math

Jennifer has eleven dresses. Two of the dresses are yellow. What fraction of her dresses are not yellow?

62. Math

Stephanie received twenty-one email messages. Three of them were from her mother. What fraction of the messages were not from her mother? Can you please provide the answer in numeric form?

63. english

Is this sentence capalized right. The striking colors of autumn leaves are admired by nearly everyone.

Business and finance. Ms. Jordan has been given a loan of \$2,500 for 1 year. If the interest charged is \$275, what is the interest rate on the loan?

65. science

how do scientists use the si system?

66. science

what is the si base unit for density, liquid, and rectangular solid?

67. social studies

whats a site that i can get articles about prehistoric humans?

68. science

how is the si system is used in the scienetific community

69. english

is texting bad for my grammar?

70. foreign language

can i learn two languages at once?

71. Trigonometry

9x^4-24x^3+16x^2 (Find all solutions!)

72. physics

ok i saw the responses thanks still a little bit confused ok what variable is different or varaies in the sitations were you to walk say down a hill and feel that it is easier and when walking up a hill which is harder

Fine the complete subject or predicate of the sentence. then identify the simple subject or verb. Examble; The peaks of the undersea mountains rise above the surface of the water and form islands.

What insights or reactions do you have concerning what you now know about the field of business?

In testing the independence of two variables described in a contingency table, determine the critical value of chi-square if the test is to be conducted at the a. á= 0.025 level and d f = 5 b. á = 0.05 level and d f = 8 c. á = 0.01 level and d f = 6 d.

In a test of the independence of two variables, one of the variables has two possible categories and the other has three possible categories. What will be the critical value of chi-square if the test is to be carried out at the o.025 level? At the 0.05

For d f = 5 and the constant A, identify the value of A such that a. P(x² > A) = 0.90 b. P(x² > A) = 0.10 c. P(x² > A) = 0.95 d. P(x² > A) = 0.05 e. P(x² < A) = 0.975 f. P(x² < A) = 0.025

78. math

it is less than 60 and greater than55 if you add digits the sum is 13. write the number

79. geography

what kinds of geographer might be employed by a manufactering company?

80. MATH Prob.

How many 4-character license plates are possible with 2 letters from the alphabet followed by 2 digits, if repetitions are allowed? if repetitions are not allowed?

81. math

use counters to model and find these products 2(5).

82. MATH Prob.

A student asks, “What’s wrong with the argument that the probability of rolling a double 6 in two rolls of a die is 1/3 because 1/6 + 1/6 = 1/3?" Write an explanation of your understanding of the student’s misconception.

83. MATH Prob.

A jar contains four marbles, each a different color: red, blue, green, and yellow. If you draw two marbles from the jar, one after another, replacing the first before drawing the second, what is the probability of getting a. two red marbles? b. a red

84. MATH Prob.

Suppose that pizzas can be ordered in four sizes (small, medium, large, and Illini-size), with three crust choices (thin, thick, and Chicago style), four choices of meat (sausage, pepperoni, hamburger, and none) and two types of cheese (regular or double).

85. Physics

There is a 85 uC point charge at the origin. What is the electric field at the point x= -45cm , y= 55cm. I am doing (-.45+.55)/(-.45^2+.55^2)^3/2 Where did I go wrong? I have to find the elctric point for the Ex and Ey.

86. Math

For his long distance phone service, Miguel pays a \$2 monthly fee plus 12 cents per minute. Last month, Miguel's long distance bill was \$24.92 . For how many minutes was Miguel billed?

87. Math

Amanda received a 70 gift card for a coffee store. She used it in buying some coffee that cost 7.37 per pound. After buying the coffee, she had 25.78 left on her card. How many pounds of coffee did she buy?

88. English

Should I double space anywhere on this? I'm replying to your advertisement in the San Jose Mercury newspaper. I understand that you’re actively seeking to hire a quality Medical Office Assistant. I worked for The Berman Skin Institute as a Front Desk

89. Logarithms

1. Find the amount of time required for an investment to double at a rate of 12.3% if the interest is compounded continuously. MY ANSWER: 5.635 yrs 2. Solve e^(0.2x) < 21.2 by using natural logarithms. MY ANSWER: X

90. history

In 1905, Einstein challenged Newton's view of the universe with the?

91. social studies

why understanding how to use a map is important?

92. science

How is recombriant DNA technology used in medicine?

93. physics/medical physics

please assist me to get project topic under biophysics or application of physics in medecine

94. History

What factors make it more likely that a bill will become law? What factors make it less likely? Is it easy or difficult to pass a bill? What are some of the advantages of passing legislation quickly? What are some of the disadvantages?

Where in the Constitution is the Electoral College described? (I know there are two parts)

It has been reported that 10.3% of U.S. households do not own a vehicle, with 34.2% owning 2 vehicles, and 17.1% owning 3 or more vehicles. The data for a random sample of 100 households in a resort community are summarized in the frequency distribution

It has been reported that 10.3% of U.S. households do not own a vehicle, with 34.2% owning 2 vehicles, and 17.1% owning 3 or more vehicles. The data for a random sample of 100 households in a resort community are summarized in the frequency distribution