1. physic

A satellite used in a cellular telephone network has a mass of 2010kg and is in a circular orbit at a height of 770km above the surface of the earthTake the gravitational constant to be G = 6.67×10−11N⋅m2/kg2 , the mass of the earth to be me =

2. Trigonometry

a flagpole 25 feet tall stands on a top of a building. from a point in the same horizontal plane with the base of the building. The angle of elevation of the top and the bottom are 61°30' and 56°20' respectively. How high is the building?

3. Math- important!!!

Samantha is a baseball player, she has a batting average of 0.280. a) find the probability that at least 3 hits in her next 5 times at bat (12 marks) b)what is Samantha's expected number of hits in her next 10 times at bat? (3 marks)

4. physic

Consider the earth following its nearly circular orbit (dashed curve) about the sun.(Figure 2) The earth has mass mearth=5.98×1024kg and the sun has mass msun=1.99×1030kg. They are separated, center to center, by r=93millionmiles=150millionkm.

5. Calculus

The percentage of alcohol in a person's bloodstream t hr after drinking 8 fluid oz of whiskey is given by the following equation. A(t) = 0.26te-0.3t , (0 t 12) (a) What is the percentage of alcohol in a person's bloodstream after 1/2 hr? After 6 hr? (Round

6. Math

A farmer wishes to put a fence around a rectangular field and then divide the field into three rectangular plots by placing two fences parallel to one of the sides. If the farmer can afford only 1600 yards of fencing, what dimensions will give the maximum

7. Statistics

1. z test 2. t test for independent samples, and 3. t test for dependent samples Hi! I really need help with this statistics. Its just that you suggest one psychological research question that could be answered by each of the following types of statistical

8. science

Which gas is a source of natural groundwater pollution? A. Oxygen B. Radon C. Hydrogen D. Carbon i think its a

9. Math

An object is projected vertically upward from the top of a building with an initial velocity of 144 ft/sec. Its distance s(t) in feet above the ground after t seconds is given by the function s(t) = −16t2 + 144t + 120. A) Find its maximum distance above

10. Consumer Math

How many cement blocks are needed to construct a wall 0.5 ft. thick, 6 ft. high, and 60 ft. long if it takes 10 standard cement blocks to make 1 cubic foot of wall?

11. algebra 2

Suppose y varies jointly with x and z, and x = 4 when y = 8 and z = -2.What is the value of x when y = 12 and z = 3? A. -4 B. 4 C. 15 D. 9

12. Chemistry

Are these reactions Exothermic or Endothermic? How do I know? 1.) Mg(OH)2(s)Mg+2(aq) + 2OH-(aq) Saw solution lighten from medium pink to very light when heated in hot water bath. (It had phenolphthalein drop for indicator.) 2.) HSO4-(aq)+

13. Chemistry AP

I'm using Zumdahl 7th Edition Chemistry Book and I'm having trouble with some practice problems in the first chapter. Here are a few: 87: Sterling silver is a solid solution of silver and copper. If a piece of a sterling silver necklace has a mass of 105.0

14. physic

A Ferris wheel 26.0m in diameter rotates once every 15.0s What is the ratio of a person's apparent weight to her real weight at the top?

In his 1992 speech, how did Mikhail Gorbachev view the impact of the global communications revolution on the people of less-developed countries?

16. History

The creation of minority group status largely depends on:     A.     The nature of the contact situation     B.     The size of the dominant group     C.     Whether the dominant group is assimilationist or pluralistic     D.     The degree

17. math

3 out of every 1,000 bulbs produced are defective. If 5,000 bulbs are produced, how many would you expect to be defective

18. Math

A doorway has the shape of a parabolic arch and is 16 feet high at the center and 8 feet wide at the base. If a rectangular box 12 feet high must fit through the doorway, what is the maximum width the box can have?

19. Geography

Which of the following statements about Southern South America is true? A. Paraguay is the smallest country of the subregion. B. Influence of Roman Catholicism has sharply declined in Argentina. C. The Argentine economy was devastated by the end of 2001

20. physics

75 kg block is dropped from a height of 6 m. How much kinetic energy does it have when it has fallen halfway?

21. Math(angle of depression) i need help please..

An observer on top of a cliff 25m above sea level views a boat on the sea at an angle of depression of 35. How far is the boat from the foot of the cliff?

22. Trigonometry

a flagpole 25 feet tall stands on a top of a building. from a point in the same horizontal plane with the base of the building. The angle of elevation of the top and the bottom are 61°30' and 56°20' respectively. How high is the building?

23. Calculus

In a study prepared in 2000, the percentage of households using online banking was projected to be f(t) = 1.7e0.71t , (0 t 4) where t is measured in years, with t = 0 corresponding to the beginning of 2000. (Round your answers to three decimal places.) (a)

24. Geography

1. In Brazil, the indigenous population was around 3.5 million before the arrival of Europeans. Today, the indigenous population is around A. 1.5 million. B. 500,000. C. 2 million. D. 200,000. My answer is A

25. Computers C++ (2)

Thank You Steve For All The Help! (If its you helping me with this one) 1.) Consider the following array definition: int values[ 5] = { 4, 7, 6, 8, 2 }; What does the following statement display? cout

26. Chemistry

Give three examples each of household items that have: a. different structures and exhibit different properties b. same chemical make-up composition but a different structure, hence, different properties c. the same properties but with different chemical

27. chemistry

What reagents would I have to use to convert a trans alkene into a cis alkene? example: trans-3-heptene to cis-3-heptene My thoughts: I feel as if I would use Br2/CCl4 first to create a dihalide, then possibly 2NaNh2 and finally a lindlar catalyst to end

You wish to learn the proportion of MBA students that are female within 3%, and with 98% confidence. How large of a sample should you get?

29. Math

Flights of leaping animals typically have parabolic paths. The figure illustrates a frog jump superimposed on a coordinate plane. The length of the leap is 9 feet, and the maximum height off the ground is 3a feet. Find a standard equation for the path of

30. Computers C++

1.) Consider the following array definition: int values[ 5] = { 4, 7, 6, 8, 2 }; What does the following statement display? cout

31. Chemistry

At 10C zinc reacts with 2.0M sulphuric acid to produce 17 mL hydrogen gas in 20 s a) what is the rate of this reaction? b)What volume of hydrogen might be produced in 20 s at 30C?

32. math

A. One board is one-third the length of another. Six times the sum of the length of the short board and -10 is equal to the length of the longer board decreased by 11 inches. Find the length of the longer board. B. The length of a rectangle is 4 feet more

33. Chemistry

A 0.355 g sample of a solid, monoprotic acid having a molar mass of 121 g/mol requires 18.47 mL NaOH for neutralization. Calculate the molarity of the NaOH solution. I got 0.159 M NaOH

34. English

Hey, just look up the grammar, tenses and wheter I use the right words, ok? It is for an oral excercise so the spelling isen't important. Thanks and now the text: Mandy: Good Morning and welcome to the morning show with me: Mandy Melrose! Today I wanna

35. Physics

A 3 kg object falls from a height of 10 m. What is its velocity just before it hits the ground? How would this problem differ if the object falling from a height of 10 m only had a mass "m"?

36. maths

Find max and min values of y=sinx sin2x

37. physics

A car (mass = 1150 kg) is traveling at 26.7 m/s when it collides head-on with a sport utility vehicle (mass = 2030 kg) traveling in the opposite direction. In the collision, the two vehicles come to a halt. At what speed was the sport utility vehicle

38. Physics

When you're riding a city bus sometimes there are no seats left and you have to stand. Why are there vertical and horizontal metal hand bars on the bus? Use the concept of inertia and Newton's 1st law

39. Algebra 2

I need help...especially finding out the time... At 1:00 a.m., a homicide detective found the reading of a corpse's body temperature to be 88 degrees Fahrenheit. One hour later, the body temperature is 83 degrees Fahrenheit. If the body has been in a 74

40. Physics Experiment

In the experiment Standing Waves,if you continue to lwer the water level after recording l(m) at the first sound resonance at fixed tuning fork frequency, you will hear the sound again but sound gets louder (second resonance). At this point, by what factor

41. gen physics

A 152 kg boat is at rest in a calm lake at the end of a dock. A 85.6 kg person running down the dock leaps into the boat with a horizontal velocity of 4.58 m/s. Ignore all effects of friction and resistance due to the water. a) Find the kinetic energy of

42. Physics

A 3 kg object falls from a height of 10 m. What is its velocity just before it hits the ground? How would this problem differ if the object falling from a height of 10 m only had a mass "m"?

43. Chem

Give three examples each of household items that have: a. different structures and exhibit different properties b. same chemical make-up composition but a different structure, hence, different properties c. the same properties but with different chemical

44. Statistics

Post a null hypothesis that would use a t test statistical analysis.. Use the same hypothetical situation taken in the t test hypothesis, and turn it into a null hypothesis using a one-way ANOVA analysis and a two-way ANOVA.

45. Law and Ethics in medicine

Elizabeth says duty of care is the obligation health care workers have toward patients. Randy says professional etiquette is the obligation health care workers have toward patients. Who is correct? A. Only Randy is correct B. Neither is correct C. Only

46. Physics

When you're riding a city bus sometimes there are no seats left and you have to stand. Why are there vertical and horizontal metal hand bars on the bus? Use the concept of inertia and Newton's 1st law

47. math ,geometry

John is building a fence that is 6 feet high and 18 feet wide to put around his garden. He has two sizes of boards that he can use. One is 2 feet by 6 feet and the other is 4 feet by 6 feet. John can put the boards either horizontally or vertically and he

48. PE

If 1 liter of the Pentland field formation water (see lecture power-point) is mixed with equal volume of seawater and noting that BaSO4 solubility under that condition is 2 mg/liter, how much BaSO4 precipitate would be there? (Hint: watch out for which ion

49. statistics

The same calculus exam has a normal distribution with a mean of 76 and a standard deviation of 6. Find the percentage of students that scored between 65 and 90.

50. maths

find the circumference of a circle whose radius is: 1. 8 inches 2. 4 inches

asked by leena : aww maths !!! help me
51. Algebra

Simplify the square root of of the fifth root of 64q^8v^6 or (√^5√64q^8v^6).

Rather than promoting goods and manufactures, the 1939 New York World's Fair sought to emphasize

53. writing

1)Al:(who's,whose)car is in my parking space? 2)Ben:(it's,its)Fred's. 3)Al:(know,no,his car is red.It might be the Jones'. 4)Ben:(their,there,they're)car is green.(here,hear)come Bob and Tony. 5)Tony:Hi!Isn't my (knew,new)car(grate,great)?

54. theory to practice

Which of the following is an obstacle to learning for a begining mover? A.Knowledge of what elements of the movememts to focus on. B. Chronic indifference characteristic between birth and age three. C.shorter time to monitor perceptual input from the

55. Algebra 2...

3|x-6| >= -2 Is this correct? x>=16/3 x

56. Finance

The balance sheet for the Raider Company shows Total assets of \$12,900 financed by \$3,000 of Debt and \$9,900 of Stockholders' equity. For the Target Company Total assets of \$4,900 are financed by \$1,800 ofDebt and \$3,100 of Stockholders' equity.

58. grammar

what i do and i want to do

59. since

where does fennec fox live

60. Physics

120 grams of metal at 88 degree celcius is poured into a 70 grams isolated cup contains 250 grams of water at 16 degree celcius. The final temperature of the mixture is 17.5 degree celcius. Determine the specific heat capacity of the metal?

61. Excel Filtering

Hi I'm trying to filter data between 3 different columns. I want it so the data filtered so data in column a is smaller than column b, which is smaller than column c. I try to filter but it only allows me to use filter criteria from the individual column.

62. Math

Convert each improper mixed number to a whole number or a mixed number: (A) 24 2/2 (b) 7 4/2 (c) 2 5/3 (d) 9 5/4 (E) 36 3/2 (f) 32 4/3 (g) 3 3/3 (h) 10 8/8

63. Calculus

Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y = 4(x^(1/2)), y=4, and 2y +2x = 6 I keep getting an area around 21.3 but it is incorrect. Am I close? Thank you!

64. heeeeeeelp math

For every positive integer n, consider all monic polynomials f(x) with integer coefficients, such that for some real number a x(f(x+a)−f(x))=nf(x) Find the largest possible number of such polynomials f(x) for a fixed n

65. Medical Transcription

I need to find someone who knows how to do Electronic Medical Records so I can proceed with my lessons. Thank you.

66. MATH

A data set has the following points: (0, 2), (4, 1), (6, 0) The slope of the linear regression line is -0.32. Find the y-intercept of the linear regression.

67. Math 116

1.IN a given training week, a swimmer completes 1/4 mile on day one, 2/5 mile on day two, and 3/7 mile on day three. How many total miles does the athlete swim in the given week? a. 151/140 miles b.3/70 miles c.3/8 miles d.37/35 miles 2. The temperature on

68. Written Communication

He was arrested for A. adroitness. B. philanthropy. C. bigamy. D. misogyny.

69. social studies

10. Heinz is a recent immigrant from Germany. Which of the following will NOT contribute to his feeling of being American? (Points : 1)

70. Pre-Algebra

c-5/4=3 Please explain. I don't get it!

71. Psychology HELP !

For your opinion, do you think personality disorders should be an inclusion as a diagnostic category in the next version of the DSM ? On the other hand, do you think personality disorders is a fact or a fiction? :)) Thank youu

72. Math.

On any given day, there is a 30% chance that Jenny will wear jeans. If she wears jeans, there is a 60% chance that she will wear a t-shirt. A) determine the probability that Jenny wears jeans and a t-shirt on any given day. B)determine the probability that

73. Maths(help me plz..!

The sides of a triangle are of lenths x*-y*, x*+y* and 2xy units respectively. Prove that the triangle is a right angled triangle

74. Math

As a means of getting exercise, you choose from going for a run, riding your bike or going for a swim. Your previous behavior shows that you bike 30% of the time and swim 15% of the time. What is the probability that the next time you exercise you will go

76. Com/340

Do you think reporters should forfeit political involvement, including party registration and voting?

77. Business Communications - English 101

revised.... just wanted to make sure I did these two paragraphs correctly. This is for an interoffice memo It was given to us with no punctuation and all sentences ran together. Thank you Ed, I have made several changes to our staff to help accommodate the

78. math

How many integers from 1 to 1000 (exclusive) are divisible by the cube of an integer larger than or equal to 2?

79. math

fine the total amount in the compound interest account? \$8000 is compound semiannually at a rate of 10% for 20 years

80. Calculus

Find the derivative of the function. f(x)=(e^x+e^(-x))/2

81. Calculus

Find the derivative of the function. f(s)=(s6 + 1)e-s6

82. Calculus

Find an equation of the tangent line to the graph of y = e-x2 at the point (2, 1/e4).

83. algebra

Write the equation of the line in slope-intercept form that passes through the point (3, -2) and has a slope of 2.

84. Excel Filtering

Return 2005 Return 2006 Return 2007 I have a data table with returns for 3 different years. I want to use a filter that only includes records where the return is increasing each year(i.e.: 2005

85. Math

A basketball team won 10 of its first 20 games. If then won its next 5 games. What fractional part of its total number of games did it win?

86. alg2 check?

1.)...(2x)(3x^3)? I said it was x=5 am I right?step by step plz? 2.)....(4xy^2)^3 im not sure about this one

87. Thermodynamics

1. The total enthalpy of 15.000kg of steam at 2250.000kPa is 34191.510kJ. Determine the dryness of the steam. ANS = % 2. Determine the quantity of heat required, to raise 11.100kg of water at 80.000 degrees Celsius, to saturated steam at 2250.000kPa and

88. algebra 2

solve equation for x atate any restrections ax-bx+2a

89. Math

Solve for x 35:4=x:2

90. life orientation

identifie 5 ways in which the environment /human factor impact on the community

91. Math

W varies directly as x,y,and z. If w=36 when x=2, y=8, and z=12 find w when x=1 y= 2, and z=4

92. Math

Over a fixed distance speed r varies inversely as time t. If the speed of a car is 30 mph when the time is 6 seconds what would the speed be of the car if the time was 4 seconds

93. Physics

An 8 kg ball is moving at 4 m/s. Work is done on the ball to give it a speed of 12 m/s. What is the ball's initial kinetic energy? What is the ball's final kinetic energy? What work was done on the ball?

94. mat221

3X(14-12)+29 divide by 7

95. Geography

The _______ were responsible for the forced migration of more people from Africa than any other colonial power. A. British B. Dutch C. Portuguese D. Spanish

96. children's literature

which of the following statements about literary is true

97. math

The volume of a box with square base is 90 cubic centimeters. If the height of the box is 15 centimeters, what is the length of each side of the base?

98. Math(reiny)

On the earlier questin would the speed be faster not slower?

99. socials 11

why was totalitarian needed for ww2?

100. history

i need to write a short note on mughal empress princess jahanara

101. Pre-Algebra

I need help on these two questions: -d/6+12=-7 b+1/3=2

102. Theory to practice

a child throws a ball with speed and accuracy when he plays catch with his teacher, but throws are slower and less accurate when he plays with a group of friends. this diffrence is explained by.

103. Pre-Algebra

3/4q-7=8 *please also post a website