1. Science - physics

a jet airplane lands with a speed of 122 m/s and can accelerate uniformly at a max rate of - 6.2m/s2 as it comes to a rest. can this airplane land in 1.0 km runway

2. Computer science

need help how do this program. Use the top-down modular approach and pseudocode to design a suitable program to solve it. Alberta Einstein teaches a business class at Podunk University. To evaluate the students in this class, she has given three tests. It

3. GEOMATERY

AN OPEN WATER TANK WITH LENGTH 20CM AND WIDTH 15CM HOLD 4.8 LITER OF WATER .CALCULATE THE HEIGHT OF WATER LEVEL IN THE TANK AND THE TOTAL SURFACE AREA OF THE CUBOID IN CONTACT WITH THE WATER

4. math calculus

Find the half-life (in hours) of a radioactive substance that is reduced by 30 percent in 40 hours.

5. physics

What state of the art computer technology is used to train pilots when wanting to copy the experience of flying an aircraft?

6. math calculus

In the year 2005, a picture supposedly painted by a famous artist some time after 1815 but before 1865 contains 95 percent of its carbon-14 (half-life 5730 years). Approximately how old is the painting? In years

7. AP Physics

A bridge 30 m long crosses a chasm. If the bridge is inclined at angle of 20 degrees to the horizontal, what is the difference in height of the two ends of the bridge?

8. Chemistry

7) 14 carat gold has a purity of 58.3%. How many moles of gold are in 163 grams of 14 carat gold? Answer in units of moles. 8) A 15.9 g sample of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to

9. English Grammar

Help me identify the subject and predicate in the sentence, 'After I finish my homework I will listen to the radio.

10. Algbrea

sapphire island is open 7 days a week the park has 8 ticket booth and each booth has a ticket seller from 10:00 AM to 5:00 PM on average ticket sellers work 30 hours per week write an equation that can be used to find t the minimum number of ticket sellers

11. Science

The type of graph used to show how a part of something relates to the whole is which of the following? A)circle graph B)bar graph C)line graph D)direct proportion My Choice is A

12. math

the product of 9 and jose's height is 117

13. Science

What elements have the highest ionization energy and why?

14. algebra

At a point on the ground 30 feet from the base of a tower, the distance to the top of the tower is 2 feet more than twice the height of the tower. Find the height of the tower.

15. math

translation of the quotient of 100 and w

16. Culler middle school

A football team loses 4 yards on each of three plays.what is the change in yardage after those three plays?

17. science

A solution is prepared by dissolving 0.490 g of an unknown compound in 50.00 mL of water. The freezing point of the solution is –0.201°C. Assuming the compound is a non-electrolyte, what is the molecular mass of the compound? Use 1.00 g/mL as the

18. history

how did the Europeans perceive themselves in the world during the1450s through the 1700s

19. Algebra

For all real numbers a and b, 2a • b = a2 + b2 Is this true or false False a=1, b=2=>4=5 false

20. math

translation for y less than 18 times 6

21. Maths

A house plan shows a scale of 1:25. If the rectangular lounge room of the house is to measure 4 metres by 6 metres, what will the area of the lounge room be on the plan?

22. isikhalisezwe high

what are the environmental issues that can cause ill-health in our community

23. Ochem

Which of the following is NOT a proper name for an organic compound (because it doesn't identify the longest possible carbon chain)? 2-methylpentane 3-methylpentane 2-ethylhexane 2,3-dimethyl butane

24. Science

Why is the use of the inquiry process a practical way to approach science?

25. Math

Kevin is riding a bike with a 1.5 feet diameter. If the tire makes 100 rotations, how far has Sherry traveled? don't tell me the answer show me how you can find the answer?

26. chemistry

if 1.37 moles of Pb(NO3)2 is mixed with 2.56 moles of KI, how many moles of PbI2 are produced?

The area, A cm3 , of a circle increases at a constant rate of 2 cm2 ´ s -1 . If the initial area of A is 1 cm2 , show that the radius of the circle at time t is given by r=sqrt( 2t+1/ pi) sqrt on both denominator and numerator

28. math

how to do -48= 2q and 13 n/10

29. Life orientation

Four environmental issues that cause ill-health

30. english

Revise the following paragraph, improving it without changing its overall meaning. Pay particular attention to the sentence structure and parts of speech. Imagine a time when there was only one little store. To shop in for a whole town. The only selection

31. algebra

complete the table to answer 1-4. i don't put a table here because i can't and it's time consuming, so i made up word problems for the table. 1. for the abc company, you own 5 shares and lost \$2 on monday, gained \$5 on tuesday, and lost \$1 on wednesday.

32. English

Hey guys! I need to say at which position "finally" stands. and I have no idea... Here the sentence: Age had finally wearied them. At the other sentences it was after the subject or before the predicate. something like that. And here I'm lost... Can you

2=log2(4)

35. Math

The sum of age of asha and musa is 50 years.If ten years ago the age of musa was twice of asha find their present age

36. Math

The cost-benefit equation T=-0.623-194 In (1-p) describes the approximate tax T, in dollars per ton, that would result in a p% (in decimal form) reduction in carbon dioxide emissions. What tax will reduce emissions 70%?

37. English

Have a great weekend. See you on Monday. - You, too! See you later. ========================== What other expressions can we use instead of 'You, too!"? Is "You,too!" used instead of "Have a great weekend"?

38. Chemistry

If the H-atom electron in the n=1 state absorbs energy equivalent to 2.178x10^-18 J, what energy state will it occupy?

39. math

Question1: find the least perfect squared number that is divisible by 12, 16,20 and 24. Question2: a gardener with 5770 plants to arrange them such that the number of rows of plants equals the number of plants in each row. When he does so,he discovers that

40. English Grammar

Can you help me identify the subject verb indirect object direct object in the sentence, The garbage truck arrives very early in the morning.

41. resolve the partail fraction and then integrate

resolve the partail fraction and then integrate.3x^2-34x+97/(x-5)^3

42. Math

What is the square root of 23 subtracted from square root of 37 divided by square root of 23 added to square root of 37??

43. l.o

discuss 5 factors that cause the environmental hazard

44. mpole high school

Businesses processes community must engage whenever there is an issue before and during the protest

45. Qoqisizwe high school

Life orintation identify four environment issues that cause ill-health in your community

46. Math

On Saturady, Emily made 10 times as much as on Monday. How much money did Emily Collect on Monday?

47. intro to digital tech

. Come up with an Invention that may impact/change the world 50 years from today. Get creative and think outside the box. Do your research to think of an idea that would really help change/impact the world positively. 2. Write about the following in

48. English Grammar

After I finish my homework I will listen to the radio. Is this sentence a complex sentence?

49. math , physics, chemistry

sec^4x=11tan^2x+5 than what is the value of tanx

50. English

Which of the sentences below uses the word turned as a linking verb? A)The milk turned sour after sitting out on the counter overnight. B)She turned the doorknob but the door was locked. C)Have you turned in your writing assignment yet? My choice is A

51. math

what is 57 centimeters and 6 millimeters plus 34 centimeters and 9 millimters

52. MATH ALGEBRA

The Forever Green Nursery owns 7000 white pine trees. Each year the nursery plans to sell 12% of the trees and to then plant 600 new ones. a. Find the # of trees owned by the nursery after 10 year b. Find the # of trees owned by nursery after many years

53. human resouces

above all, an appropriate organizational structure help to A manage competitors. B prevent behavioral issues among employees c eliminate unethical scandals. D. foster good performance

54. Math

A= ((r+z)/3)m solve for r

55. Calculus

Differentiate. f(x)=(cos x)/x I got to here: (-x sin x - cos x)/x^2

56. Calculus

Find the equation of the tangent line to f(x)=sec x - 2 cos x at (pi/3, 1).

57. life orientation

Assess the extent to which bad road use has a direct impact on the physical,emotional,social and economic aspects to the family,the community and the country

58. english

All that had so long engaged my attention suddenly grew despicable. Which of the following assertions is supported by this text? The forces of nature are not predictable enough for the narrator. The forces of nature are responsible for the shift in focus

59. english

If, . . . my father had taken the pains to explain to me that the principles of Agrippa had been entirely exploded and that . . . the powers of [Agrippa] were chimerical, . . . I should certainly have thrown Agrippa aside. . . A chimera is a deception or

60. english

How does the episode with Victor's father and the episode with the lightning strike as described in this excerpt function similarly? They both involve the reading of books about science. They both involve interactions with parents or guardians. They both

61. Physics

A startled armadillo leaps upward, rising 0.644 m in 0.170 s. a. What is its initial speed? b. What is its speed at this height? c. How much higher does it go? For a. 0 is not the answer and neither is 3.79 m/s (product of .644m*.170s)

62. english

Read Article IX of the United States Bill of Rights: The enumeration in the Constitution, of certain rights, shall not be construed to deny or disparage others retained by the people. What is the main effect of setting the phrase of certain rights off with

63. english

And thus for a time I was occupied by exploded systems, mingling, like an unadept, a thousand contradictory theories and floundering desperately in a very slough of multifarious knowledge, guided by an ardent imagination and childish reasoning, till an

64. english

And thus for a time I was occupied by exploded systems, mingling, like an unadept, a thousand contradictory theories and floundering desperately in a very slough of multifarious knowledge, guided by an ardent imagination and childish reasoning, till an

65. world history

why might a person say aristotle is the most modern of the ancient greek philosophers?

66. math

Given an exponential graph that are concave up and the points (1,4) and (-1, 16), give a possible formula of the function. I plugged the variables into the f(x)=b times a^x and got: 4= b times a^1 and 16=b times a^-1 I am not sure where to go from here.

67. math

For example, when I try to solve an equation like 1.096 = a^1000, what should I do? I'm trying to find a formula for this set of data and that's how I got the above equation: d=??? Elevation (ft) Sea level labeled h 1000 2000 3000 4000 Takeoff roll (ft)

68. History

Why does New Mexico have a varied climate? A)It stretches along a long coastline. B)Part of its border lies along Mexico. C)Its physical features divide the land into different regions. D)Its land is mostly flat so weather moves quickly. My Choice C

69. geometry

So On the first day of school I went to geometry and we did a review. My teacher had us work out this problem and I've never seen it before. Other kids were doing the problem and I was just there confused. I was embarrassed and didn't want to ask for help.

70. History

Which New Mexican geographic condition most contributed to the development of early Native American farming techniques? A)presence of wide, flat plains B)water scarcity C)availability of mining resources D)variations in temperature My Choice D

71. History

The Spanish mostly viewed Native Americans in New Mexico as A)inferior people good mostly for labor. B)sophisticated allies with valuable technology. C)superiors from whom to learn political and economic systems. D)fierce but worthy competitors for riches

72. History

Which of the following New Mexican groups has a slightly above-average population by percentage as compared to the entire United States? A)African Americans B)Asians C)native-born citizens D)retirees Why do the Pueblo peoples most likely view Chaco Canyon,

73. Calculus

Differentiate e^cos (x^2+1). My answer: -2xe^cos(x^2 +1) • sin(x^2+1)

74. american politics

In the FAA-McDonnell Douglas DC-10 case, the author implies or asserts which of the following? A. The FAA immediately fixed the cargo door. B. McDonnell Douglas eventually complied with the FAA’s order to strengthen cargo doors and cabin floors. C. The

75. math

An indoor auditorium has a small side section that models an arithmetic sequence where the third row has 5 seats and the tenth row has 26 seats. If that section has 14 rows, how many seats would be in the last row?

76. Calculus

Differentiate y=[(8x-x^6)/(x^3)]^(-4/5) My answer: [4x^3(16+3x^5)]/5 • fifth root of [(8x-x^6)/(x^3)] ^9

77. Algebra II

An indoor auditorium has a small side section that models an arithmetic sequence where the third row has 5 seats and the tenth row has 26 seats. If that section has 14 rows, how many seats would be in the last row?

79. math

i am a digit greater than 20000, my first 2 & last digits are the same,the middle digits are the same, 1 digit is twice the other digit,i am an odd number

80. Math

A moving company charges \$800 plus \$16 per hour. Another company charges \$720 plus \$21 per hour. How long is a job that costs the same amount for both companies?

81. OChem

A disaccharide has how many monomers? I think it is two?

82. math

i am a digit greater than 50000 but less than 90000,my digits add up to 17, my first 2 digits are multiple of 10 and the last 3 are multiple of 100

83. physics

A man 1.92 m tall, walking near a street light at night, casts a 3.88 m long shadow directly in front of him. The lightpost is 5.82 m behind the man. How tall is the lightpost?

84. ingqayizivele high

Am doing math lit ,geography,history n life sciences I dnt knw which career to choice can u plz help me .cal m 4 help on 0625113520 plz

85. american politics

Which of the following statements is incorrect? A. Democracies tolerate different opinions and interests. B. Democracy is a favored “label” for many governments. C. Citizen participation in voting must exceed 80 percent of eligible voters in order for

86. physics

Water at 29.0 °C is sprayed onto 0.188 kg of molten gold at 1063 °C (its melting point). The water boils away, forming steam at 100.0 °C and leaving solid gold at 1063 °C. What is the minimum mass of water that must be used?

87. Ochem

Most fatty acids with double bonds are found in animals or plants? Are these fatty acids solid or liquid at room temperature?

88. Intro Chem

Determine the freezing point of an aqueous solution containing 10.50 g of magnesium bromide in 200.0 g of water.?

89. Biology

How does the "Patching and Capping" experiment verify the fluid concept of the Fluid Mosaic model?

90. Chemistry

The mineral cassiterite is a compound of tin and oxygen. Chemical analysis of cassiterite shows that the mass percentages of tin, Sn, and oxygen, O, are 78.8% and 21.2%, respectively. Determine the formula of this compound. I found the molar mass and

91. Chemistry

How many atoms are present in 0.3333 mol of CO2? I know I need to use the conversion factor of 6.021x10^23 but do I just multiply that times .3333? =2.007?

92. Math

My math question is the square root of 3,5,7 and seven. The square root of 3 falls between 1 & 2. The square root of 5 falls between 2 & 3. The square root of 7 falls between 2 & 3. AM I CORRECT. THANKS

93. Physics

two cars A & B at rest at same point initially if A starts with uniform velocity of 40m/s and B starts in the same direction with constant acceleration of 4m/s^2, then B will catch A after how much time

94. math

Find x 1) 6log(down)10 x=1.6 2) e^-4x=1.943 3) 1.3x10^-4 x=4.7/x -6.3x10^-3 4) 6lnx=1.6 5) x^2¡Ñ23y^2 = 1.78x10^32¡Ñz please help I really can't solve this problem.

95. physics

7 pulles of 6 hanged with weighs 23kg,15kg,20kg,6kg,34kg,5kg then find the weight hanged to 7th pulley

96. math

Let f(t) = Q0at = Q0(1 + r)t. f(7) = 75.94 and f(9) = 91.89 (a) Find the base, a. (Round your answer to two decimal place.) a = I honestly have no idea how to approach these problems. I wrote out the different equations: 75.94 = Q0a^7 and 91.89 = Q0a^9 but

97. Math

Pencils come in packages of 10 each. Packages are packed 20 to a box, and boxes are packed 500 to a carton. How many pencils are in a carton?

98. biology

What types of amino acids and domains are found in the "transmembrane" region of these proteins?

99. Math

I have a problem find the number in a open number line , my multiplication is 28x6 =168 how can I do this in a open number line ?

100. physics

1.will hall voltage be same for conductor and semiconductor in hall effect experiment? 2.can hall effect experiment be used for determining earth's magnetic field? 3.what is the importance of hall experiment? 4. can we use intrinsic semiconductor for hall

101. biology

What type of extraction is needed to isolate integral proteins? (Hint: a type of amphipathic molecule is in this solution)

102. equation

9^x(-2)+3^3x=81.... here is wat i did bt i go confuse (3^x)(-4)+(3^x)3=81 let 3^x=b b/4+b^3=81 multiply tru 4 b+b^3=81

569 times 12

104. Math

Example input are x=24,22,0,2,4 and the rule is y=1/2x-2 what are output?

105. equation

9^x(-2)+3^3(x)=81 i need help

106. physics

A system does 137 J of work on its environment and gains 95.3 J of heat in the process. Find the change in the internal energy of (a) the system and (b) the environment

107. math

the product of a number and 35