1. dav science

a machine gun fires 25 g bullets at the rate of 600 bullets per minute with a speed of 200 m/s. calculate the force required to keep the gun in position.

2. Maths

In a class of 75 students,15 are above average,45 are average and the rest below average achievers.The probability that an above average achieving student fails is 0.005,then an average achieving student fails is 0.05 and the probability of a below average

3. trig

A spring is attached to the ceiling and pulled 17 cm down from equilibrium and released. After 3 seconds the amplitude has decreased to 16 cm. The spring oscillates 13 times each second. Assume that the amplitude is decreasing exponentially. Find an

4. physics

A toy rocket, launched from the ground, rises vertically with an acceleration of 32 m/s^2 for 4.1 s until its motor stops. Disregarding any air resistance, what maximum height above the ground will the rocket achieve? The acceleration of gravity is 9.8

5. Sociology

The difference between positivism and anti -positivism relates to: a. whether individuals like or dislike their society b. whether research methods use statistical data or person-to-person research c. whether sociological studies can predict or improve

6. math

a bag contains 400 coins ,and 33 1/2 % are nickels, how many nickels are there?what percent of the coins are not nickels

7. math

The leng of the smaller rectangle is 1 inch less than twice its wide. both the dimensions of the larger rectangle are 2 inches longer than the smaller rectangle. the area of the shaded region is 86 square inches. what is the area of the smaller rectangle?

8. Sociology

Which of the following was a topic of study in early sociology? a. Astrology b. Economics c. Physics d. History

9. American Constitutional Law

Please help with these two questions: The power of judicial review extends to __________ action. A. congressional B. executive C. state D. All of the above I SAY D. A judge who follows an interpretive approach that focuses on the precise meaning of the

10. statistics

The number of vacation days taken by employees of a company is normally distributed with a mean of 14 days and a standard deviation of 3 days. For the next employee, what is the probability that the number of days of vacation taken is less than 10 days?

11. Teaching in Early Childhood Programs,

Which of the following is least characteristic of internalization? A. It occurs at different times for different issues. B. It involves behaviors and attitudes that become basic parts of each child's personality. C. It involves some measure of

12. computers

Which vendor did IBM select to create the operating system for the IBM PC

13. physics

a cannon fires a shell with a speed of 84m/s.when the cannon is inclined at 45 degree,the horizontal distance covered is observed as 630 m.what is the percentage decrease in the horizontal distance observed due to air resistance?

14. chemistry

an endothermic reaction a to b has an activation energy of 15 kcal per mol and heat of reaction 5 kcal per mol the activation energy for the reaction b to a will be ?

15. Algebra

To which subset of rel numbers does the number -22 belong? whole numbers rational numbers integers irrational numbers natural numbers I know it's an Integer but I'm not sure of the second answer.

16. trigonometry

The bearing of the lighthouse is N 68 degress E from a ship 43 miles from the lighthouse. How far north of the ship is the lighthouse?

17. Maths

Bag A contains 2 white, 1 black and 3 red balls, Bag B contains 3 white, 2 black and 4 red balls and Bag C contains 4 white, 3 black and 2 red balls. One Bag is chosen at random and 2 balls are drawn at random from that Bag. Of the randomly drawn balls

18. probability

A bag contains 8 red, 12 white and 4 blue marbles. If 2 marbles are selected in succession (without replacement), find the probability as a common fraction in simplest form that first is red and second is blue

19. chemistry

calculate the concentration of ammonium nitrate solution.

20. finance

A quaint but well established cafe shoppe in the new hot cafe wants to build a new cafe for increased capicity it expect sales are \$800,000.00 for the first 5 years, direct cost including labor and material 50% for new cafe will be totaled at \$750,000.00

21. Math

You ride your bike at an average speed of 8 miles per hour.how many miles can you travel in 1.5 hours?

22. chemistry

if the wavelength of the first line in the balmer series in a hydrogen spectrum is 6863A .calculate the wavelength of the line in the lyman series in the same spectrum

23. literature

Hi, I'm doing a poem for a literature book called Red Sky In the Morning by Elizabeth Laird. The theme that my teacher assigned to me is'Anna's love for Ben'. It can be through her thoughts, words, actions or what other characters say about her love

24. management organization

In what ways innovative or high tech firms often adopt strategy ignoring history this strategy helps them ?

25. geometry

A stick 5 cm long, a stick 9 cm long, and a third stick n cm long form a triangle. What is the sum of all possible whole number values of n?

26. chemistry

blance this equestion with partial balincing method:- Zn+HNo3(very dil)

27. Math

a person sol 100 shares of stock at a profit of 15%. if the selling price for the 100 shares was 2300. what was paid for the stock?

28. Math

1. A man has 22 feet by 26 feet rectangular lot that he will use for planting. He wants to build a brick of walkway of uniform width on the border of the lot. If the man wants to have 396 square feet of ground left for planting, how wide should he build

29. Math

1. The length of a rectangle is 6 inches longer than thrice its width. The area of the rectangle is 57 square inches. Write a quadratic equation for the area of the floor in terms of x. Find the length and width of the rectangle. 2. If 1,500 ft of fencing

30. maths

Given p(x)=x^4+ax^3+bx^2+cx+d,such that x=0 is the only real root of p'(x)=0.If p(-1)

31. math

The length of a rectangle of perimeter 64 cm is 5/3 of its breadth . Find the area of rectangle ?

32. Data structure

Q1. Write a menu driven program for checkout lines in a supermarket, Using Queue data structure and Queue Simulation concepts. Create varied lines of servers depending on the user input initially. Display the queue of each server along with the customers

33. Chemistry

How would I find the concentration of an unknown acid if I have a Ka value of 3.98x10^-5?

34. Engineering maths

A rectengular swimming pool 30m long and 22m wide is made.And a deck of the uniform width is made around the pool,and only 480m^2 deck is made,HOW WIDE SHOULD THE DECK BE?

35. Criminal Organization

Write a 1,050- to 1,750-word paper, using definitions, principles, and theories from previous assignments, in which you establish a thesis regarding the control of organized crime. I am just not understanding what my instructor is asking.... Please

36. cda

A criticism of the information -process approach is that it

37. statistics

In performing a hypothesis test, the null hypothesis is population mean = 6.9 and the alternative hypothesis is population mean ≠ 6.9, a random sample of 16 items is selected. The sample mean is 7.1 and the sample standard deviation is 2.0. The

38. history, life science, cat, maths lit

What career path can I follow with these subjects?

39. maths

Given p(x)=x^4+ax^3+bx^2+cx+d,such that x=0 is the only real root of p'(x)=0.If p(-1)

40. important math question

the equation x^3 -x-5=0 has one solution for x between -2 and 2. what is the solution? how do I get this

41. American Constitutional Law

Which of the following is NOT a constraint on federal judicial power? A. Lifetime appointment B. Presidential nomination C. Impeachment for high crimes and misdemeanors D. Congressional control of judicial jurisdiction I think it's C., but not positive

42. social studies

If u travel o degrees latitudes, 0 degrees to 30 degrees north latitude, 120 west longitude u will have travel from

43. psychology

Regarding differences between the sexes, both evolutionary psychologists and sociobiologists agree that women are more __________ than men. A. jealous B. promiscuous C. status-conscious D. socially dominant

44. mat

write an expression for? a river is currently 5 ft deep.Due to runoff from hills the depth rises 6 1/2 ft after 3 inches of rain?

45. programming

Write a c proram to find rhme words ? So, how to do it and i need a database dictionary to read from..

46. history, life science, cat, maths lit

What career path can I follow with these subjects?

47. math

evaluate the limit as x approaches 0 from the right. of the function xcos(1/x) I know the answer is O but I am not sure as of my reasoning. I just that that since cos(1/x) is being multiplied by a number approching 0 that the whole limit would be o.

48. Health

________ is the name of a condition in women where the normal balance of bacteria in the !@#\$%^& is disrupted and replaced by an overgrowth of certain bacteria. A. Herpes B. Bacterial Vaginosis C. Chlaymdia D. Syphilis

49. Health Part 2

People living with HIV can have a longer and healthier life by ________. A. Joining a support group B. Taking their medicines C. Learning as much as possible about HIV and available treatments D. All of the above I'm guessing D? What percentage of all

50. Statistics

The CEO of ABC manufacturing commissioned a study to look at the differences between the current salaries of her employees by employee job title. There were three job categories: clerical, custodial, and managerial. The study collected current salary data

51. chemistry

Lovastatin is an anti-cholesterol drug that can be easily extracted from oyster mushrooms. A 291 mL lovastatin solution with a concentration of 0.001479 mol L-1 was extracted from 50 g of dried oyster mushrooms. Calculate the percentage of lovastatin in

52. Math

Assign variables for the following problem (you do not need to solve the problem) Thirty fluffaluff trees are introduced on an island at the start of year zero. At the start of thirty there are 55 fluffaluff trees. Use the fluffaluff formula to find how

53. Algebra

The following is a report of defective parts reported by inspectors in 3 electronic factories: Brookline= 3 per 10,000 Brookville= 5 per 100,000 Brooklyn= 13 per 1,000,000 Which of the following best expresses the portion of defective parts in three

54. Math

A person stock worth 2300 at 100 shares and they had a 15 % profit how much was the stock

55. Math

If a worker wants to pack 200 newly harvested mangoes at average size of 3"x2" in delivery boxes .To optimize the cost and profit in packaging , the mangoes must be properly packed in boxes of similar sizes. To systemize counting , there must also be equal

56. Math

How long can I wait to see the answer of my question about Algebra ? Its been a long hour .

57. math

SIN(90*-0)COT(90*-0)/SIN0+COS(90-0)=1/2

58. physics

Plot a speed-time graph of a car A traveling at a uniform speed of 80km/hr on the same graph plot the speed-time graph of 2nd car B starting from rest and uniformly accelarating through a maximum speed of 80km/hr a) what relations do you find between the

59. math

A swimmer S is in the sea at a distance of 4km from the closest point A on a straight shore.His house B is on the shore at a distance 5km from A.He can swim at a speed of 3km/hr.The distance of the point on the shore from B so that he reaches his home in

60. Physics

A drop of rain of mass of 20kg strike a bald headed man what force did the man experience

61. math

a computer is being lowered into the ocean from a platform. at this moment it is 210 feet below surface and being lowered 150 feet every 30 minutes. how to write this in the form of an expression?

62. Health Part 2

In the United States, the most at risk and highest reported rates of infection of gonorrhea are among sexually active ________. A. Teenagers B. Young Adults C. African Americans D. All of the above D?

63. science(biology)

state three secondary functions of roots,stems and leaves

64. sociology

That Baby Boomers have influenced how retirement communities are designed, organized, and governed is an example of a demographic trend.

65. Statistics in Psychology

What is a proper Null and Alternative HypothesThe CEO of ABC manufacturing commissioned a study to look at the differences between the current salaries of her employees by employee job title. There were three job categories: clerical, custodial, and

66. maths

How to find missing number.,(180,14) (120,8) (?,4) (220,18)

67. Algebra 2

Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.64 cross product 10−5 watts/cm2

y=-3/2x -2

69. MAth

If a worker wants to pack 200 newly harvested mangoes at average size of 3"x2" in delivery boxes .To optimize the cost and profit in packaging , the mangoes must be properly packed in boxes of similar sizes. To systemize counting , there must also be equal

70. science cbse school

a force of 10 newton gives a mass m1 an acceleration of 2m/s2 and a mass m2 an acceleration of 4m/s2.what acceleration would it givr if both the masses are tied together?

71. math

Find the equation of the circle for which the points (1,2),(4,6) are the end points of a diameter.