# sasha

Questions and responses by sasha, page 2
1. ## Math

Tell whether the triangle with the given side is a right triangle;14mm, 19mm, 23mm

2. ## Physics

(a) Suppose you throw a football. At some instant, when the ball is in contact with your hand, your hand exerts a force of 100 N on the ball in the +x direction. What is the force of the ball on your hand?

3. ## history

What would be a good thesis statement for my intro paragraph? Effect and Evolution of African Americans in Minnesota Intro The first Great Migration occurred after the Civil War and after the 13th amendment was passed. With the passing of the 13th

4. ## Sorry- Chemistry / Ionic Bonding

Hello My exams are coming I'm a straight A student .. the problem however is : My textbooks , teacher and every piece of work that he gives us is complicated can someone explain me how Ionic Bonding works . Please I really beg you... I need your help! My

I found some links for the geological history for the appalachian mountains BUT it confuses me. Can you please simplify the formation of the Appalachian mountains?? please? thanks. Basically the mountains were created due to the merging of the continents

6. ## Math

To find the weight of the gold in a 22 karat gold object, multiply the object's weight by 0.917. To find the weight of gold in a 14 karat gold object, multiply the object's weight by 0.583. Part 1 Which contains more gold, a 22 karat gold object or a 14

7. ## Math

m∠2 + m∠3 + m∠4 = 180°/ reason: Given? m∠1 + m∠2 = 180°/reason: Supplementary Angle definition m∠1 + m∠2 = m∠2 + m∠3 + m∠4/reason: Substitution property equality m∠1 + m∠2 - m∠2 = m∠2 + m∠3 + m∠4 -m∠2/reason= Subtraction

8. ## Organic Chemistry

I spotted a commercial TLC plate, coated with silica gel, with a pure benzoin solution. After running the TLC plate in methylene chloride, the benzoin separated into two different spots. Rf values are 0.6 and 0.9. What explains this? A pure material should

9. ## Physics Honors

A 47.0 g golf ball is driven from the tee with an initial speed of 48.0 m/s and rises to a height of 23.2 m. (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. (b) What is its speed when it is 8.0 m below its

10. ## Physics

A pond is 12 metres across. The crests of two successive waves are 60.0 cm apart and they each move across the pond in 15 seconds. a)What is the velocity of the waves? b)What is the frequency of the waves? c)What is the period of the waves?

11. ## Early Childhood Education

A needs and services plan is a. written by a pediatrician b. only for infants and toddlers with special needs c.a plan discussed by parents and caregivers upon entry into an infant-toddler program d. a formal plan to serve children that is made by the

12. ## Biology

Consider this pathway: signaling ligand ¨ G protein-coupled receptor ¨ G protein ¨ adenylyl cyclase ¨ cAMP. Identify the second messenger. Answer: A)G protein B)GTP C)adenylyl cyclase D)cAMP

13. ## Math

In American roulette where there are 38 numbers, how many possible outcomes can you have if you bet on an odd number?

14. ## algebra

(48x^6)/(48x^6/12x^2-12y^2)/(4x^5)/(3xy+3y^2)

15. ## physics

A mass of 3.4kg sliding along a frictionless floor at 1.5 m/s strikes and compresses a spring of constant k=295 N/m. The spring stops the mass. How far does the mass travel while being slowed by the spring? How long does the mass take to stop?

16. ## physics

In college softball, the distance from the pitcher's mound to the batter is 43 feet.If the ball leaves the bat at 110 mph, how much time elapses between the hit and the ball reaching the pitcher?

17. ## physics

If the average household uses electrical energy daily at the rate of 500. W, how much U-235 must undergo fission to supply this need for a year? (assume 200. MeV of energy are generated per fission and that the power plant is 46% efficient). 1. Energy used

18. ## Physics

Friction provides the force needed for a car to travel around a flat, circular race track. What is the maximum speed at which a car can safely travel if the radius of the track is 77.0 m and the coefficient of friction is 0.36?

19. ## Physics

I just need help with part c. I know stopping takes longer but we have to explain why. A student stands on a bathroom scale in an elevator at rest on the 64th floor of a building. The scale reads 849 N. (a) As the elevator moves up, the scale reading

20. ## Physics

You are driving a 2590.0 kg car at a constant speed of 14.0 m/s along an icy, but straight, level road. As you approach an intersection, the traffic light turns red. You slam on the brakes. Your wheels lock, the tires begin skidding, and the car slides to

21. ## physics

A race car can be slowed with a constant acceleration of -14 m/s2. (a) If the car is going 44 m/s, how many meters will it travel before it stops? (b) How many meters will it take to stop a car going twice as fast?

22. ## physics

a tennis ball of mass 20g is released from rest at a height of 4m above the ground. on hitting the ground,it raises to a height of 3m.find the velocity with which it hits the ground.

23. ## MATH

Sketch a rough graph of the yield of a crop as a function of the amount of fertilizer used.

24. ## language arts

What statement in the passage weakens the argument that personal music players cause hearing loss? Experts say more research is needed to prove a definite link between portable music and DVD players and hearing loss. Twenty-nine percent of students

25. ## Physics-check plz

If a pitcher throws a fast ball with a speed of 35 m/s. The ball has a mass of 220 grams. a) how much work was done in throwing the ball? b) If the catcher catches the ball by moving his mitt 15 cm. backward what force did he exert? a.) Throwing the ball

26. ## Calculus

Use the Evaluation Theorem to find the exact value of the integral ç^6 2 2x+1dx 1) What is the antiderivative? 2)What is theupper and lower limit? 3) Give final answer.

27. ## finace

The 6 percent preferred stock of Mercer Livestock is selling for \$62 a share. What is the firm's cost of preferred stock if the tax rate is 34 percent and the par value per share is \$100? (Please calculate the arithmetic solution and show your work)

28. ## calculus

what is the equation of the tangent line to the curve x^3 + 2y^2 + 3xy = 6 at the point (1,1)?

29. ## Math

Tell whether the triangle with the given side is a right triangle;1.4 m,4.8 m,5m. Explain please.

30. ## calculus

verify that the function satisfies the hypothesis of the mean value theorem on the given interval. then find all numbers c that satisfy the conclusion of the mean value theorem. f(x) = x/(x+2) , [1,4]

31. ## Physics

As a baseball is being caught, its speed goes from 27.5 m/s to 0.0 m/s in about 0.0050 s. The mass of the baseball is 0.150 kg. (a) What is the baseball's acceleration? 5500 m/s^2 (b) What are the magnitude and direction of the force acting on it? and is

charges of +1.000 C are located at the corners of a 45-45- right triangle which has a hypotenuse that is 1.414 m long. Determine the resultant force on the charge located at the vertex of the right angle.

33. ## math

Business and finance. In a bottling company, a machine can fill a 2-liter bottle in 0.5 seconds and move the next bottle into place in 0.1 second how many 2-L bottles can be filled by the machine in 2 hour?

34. ## physics

the inclined plane is 30* from the ground a) What is the mechanical advantage of the inclined plane? b) A weight of 100N is to be lifted using the inclined plane. What is the minimum applied force for this job? c) Suppose that an applied force of 200N is

35. ## Human Services

What are the merits of multiple perspectives when examining human behavior? Why is it important? Provide examples of the impact of using multiple perspectives when providing services to a family or individual.

36. ## english-essay

i have to write a critical analysis of "The Trial" by franz kafka. and i wanted to know what points i should cover in my essay. also how many paragraphs should my essay consist of.

37. ## Geography

I need to do a power point presentation on the Appalachian mountains. I need to find the geological history,rock structure,appearance,soil, vegetation,wildlife, and human activities. Can you please provide me with links with these information? Thanks so

38. ## PHYSICS

Magnetic field is 0.5T, radius is r=1m, current in one loop is I=2A. the angle between the magnetic moment and the external B field is 30 degrees. calculate the magnitude of the magnetic torque. so i know that torque= IANBsin(30) torque=

39. ## chemistry

The enthalpy change for the reaction below at 25oC is -2,252 kJ (per mole of C11H24). What is the internal energy change for the reaction at 25oC? 11 CO(g) + 23 H2(g) --> C11H24(l) + 11 H2O(l)

40. ## Statistics

The intermediate answers from some calculations based on whole number scores are X=4.3467892 and Y=3.3333. We now want to find X(2)+Y(2). After rounding, what values of X and Y do we use?

41. ## midterm review scavenger hunt funsheet

water moves in bursts

42. ## Geography

Taken as a whole, what would you say is the single most pressing problem found in Latin America or South America? What possible solutions can you develop? My Answer: In my opinion, the most pressing problem would have to be the management of poverty. South

43. ## Fluids

A pipe of constant diameter d = 10.5 cm carries water up a hill h = 38.1 m high. How much pressure is required at the bottom of the hill if the water is to reach the top? Any help would be great

44. ## Math

There are 10 sailboats in the harbor. Some of the boats have 2 sail & some of boats have 3 sails. If there are 24 sails visible on all of the boats, how many boats have 3 sails & how many boats have 2 sails?

45. ## Chemistry

3) You make a solution by dissolving 3.4g Ba(OH)2 in enough water to make 450ml of salt solution. a. What is the molarity of the solution?

46. ## Health

What does it mean if you have brown caking around your belly button, even if you follow basic hygenic practices.

47. ## Maths

Hi! I'm working on a math assignment... My teacher wants me to find rainfall data and then work out the volume of water that would fall on a roof. I've already worked out the roof area but the roof is made up of multiple squares. The teacher would like me

48. ## Algebra

Two cities are 5 1/2 inches apart on a map. The actual distance between the cities is 66 miles. What scale was used to draw the map?

49. ## Calculus

At a certain point in time, a cubical crystal has edges 5 mm in length, and these edges are growing at a rate of 2 mm per hour. How fast is the volume increasing?

50. ## COM_155

How do i write three sentence using plurals correctly and three sentences using possessives correctly on the topic of how to store personal financial information effectively and efficiently.

51. ## math

sketch the curve using the domain, intercepts, symmetry, asymptotes, local max and min and concavity. y= x /(√(x^2) - 1)

52. ## calculus

find dx/dy implicitly from √(x+y) = 1 + (x^2)(y^2). then solve for dx/dy explicitly.

53. ## calculus

find h'(2) given that f(2) = -3, g(2) = 4, f'(2)= -2 and g'(2)= 7. A. h(x) = 5f(x) - 4g(x) B. h(x) = f(x)g(x) C. h(x) = f(x)/g(x) D. h(x) = g(x)/ 1+ f(x)

54. ## social studies

A study of the causes of the American Revolution of 1776, the French Revolution of 1789, and the Russian Revolution of 1917 best supports the generalization that revolution is most likely to occur when

55. ## physics

Determine how much water would be present in a 10 tonne sample of lignite, has a moisture content of 65%, before crushing and drying. 10 tonnes is 10,000 kg.

the force between two charges is 20.0 N. if one charge is doubled, the other is tripled, and the distance between them is halved, calculate the resultant force between them.

57. ## Physics

A 2.6 N block is at rest on a horizontal surface. A 0.9 N upward force is applied to the block by means of attached vertical string. (a) What is the magnitude of the force of the block on the horizontal surface?

58. ## science

what is the name for precise information provided by numerical data

59. ## math ( average)

a student wants to get an average of 80 on the 5 tests to earn an A grade.on the 4 test he gets 79, 88,64,78. how much should he score on the 5th test so that he gets this average of 80?

60. ## ICT - DataBase

Hello I have an exam tommorrow and my question is : What is the difference between the types of the data base text and number in the data base. My teacher tells us that a phone number is in the text column because it does not change. But in number it's

61. ## Physics - Ionic bonding

Hello My exams are coming I'm a straight A student .. the problem however is : My textbooks , teacher and every piece of work that he gives us is complicated can someone explain me how Ionic Bonding works and when we're taking about this table here can

62. ## investing in the stock market

So unless I become a high-risk day-trader, there really is no way for me to make a living just investing in the stock market? So did people like Warren Buffet and Morgan Stanley build their wealth some other way? And what about the fictional character

63. ## math

A leak in a water tank causes the water level to decrease by 3.6×10^−2 millimeters each second. About how many millimeters does the water level in the tank decrease in 5 hours, or 1.8×10^4 seconds? express the answer in scientific notation.

64. ## PHYSICS

The output voltage of AC source is V(t) = (25V)sin(5πt). what is the rms value of the voltage? answer: 18V, but how???

65. ## Chemistry

An aqueous solution of ethyl alcohol is made by transfering 1.32 mL of liquid ethyl alcohol to a 50.0 mL volumetric flask, and then adding enough water to fill the flask to the mark. What is the volume/volume percentage of ethyl alcohol in the solution?

66. ## Math

The table shows the population of a school for the years 1992-2008. Year: 1992, 1994 1996, 1998, 2000, 2002, 2004, 2006, 2008 Population: 628, 656, 692,751, 793, 840 ,868, 902, 940 Which is the best prediction for the population in 2012? 1000 1100

67. ## Math

1) Which sum best represents the model shown below? There are 3 blue blocks, and each of them separately equal x^2. There are 2 green blocks that each separately equal x. There are 2 red blocks that each separately equal -1. And there is 1 yellow block

68. ## AlgebraII( Probability)

1)a number less than 35 is chosen. 2)A prime number is chosen. 3) A multiple of 4 is chosen. 4)A perfect cube is chosen. Please help me.

69. ## Electricity

Refrigerators requires a lot of electricity and uses the most electrical energy in most households. Why do refrigerators require so much energy to be operated?

70. ## Math

Grace painted 1/3 of the wall. Sarah painted 2/5 of the wall. How much of the wall have grace and sarah painted ?

71. ## chemistry

A 20.9 g sample of nitrogen gas combines completely with 4.5 g of hydrogen gas to form ammonia. What is the mass of ammonia formed? A 12.7 g sample of X combines with a 24.4 g sample of Y to form the compound XY2. What is the mass of the reactants?

72. ## calculus

find the derivative of the following: 3x^2 ln(2x) e^2x ln√x+3 please try and show few steps and laws of logarithmics.

73. ## Algebra

Mickey went to Donald Dee's to buy 75 milkshakes for his party. Each milkshake cost the same integer amount of cents. In total, Mickey spent at least \$124.00 on milkshakes. What is the smallest possible cost (in cents) of a milkshake?

74. ## Math

I have 5 friends. I bought three pizzas (all the same size). One was divided into 4 equal parts, the 2nd was divided into 6 equal parts and the 3rd pizza was divided into 8 equal parts. Is there any way I can show how to share these pieces so that each of

75. ## math

If a business borrows \$15,000 and repays \$20,700 in 4 years, what is the simple interest rate?

76. ## intrest rates

If the principal P = \$500, the interest I = \$100, and the rate r = 10%, find the following. (a) What is the time? years (b) What is the future value?

77. ## Social Studies

What are some importance and reasons for monuments and forts in guyana?

78. ## English

Give a definition of an uncountable and a countable nouns and examples PLEASE and THANK YOU!

79. ## History

What were the special characteristics of the population of Virginia in the seventeenth century and what accounted for them?

80. ## cultual studies

Analyze and interpret the following quotation: “Worldwide, non-Western cultures faced fundamental challenges to their cultural identities—not so much a recentering of culture but a decentering of culture” (Sayre, 2010, p.419).

81. ## Science

State the two broad classes of wood and describe them.

82. ## Music

List the elements of music.

83. ## Computers

Name 5 examples of secondary storage devices and describe them

in the princess diaries, do mia and michael get back together????????? i need to know!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! please help

85. ## English

Does what we watch and experience in popular culture affect the way our families behave? Explain your rationale.

86. ## Finance

If depreciation is not a cash flow item, why does it affect the level of cash flows from a project in any way? Why are we interested only in incremental cash flows rather than total cash flows?

87. ## Finance

Strategic Initiative I have chosen amazon store online as my company. I need to come up with an intro and conclusion i have the body of the paper. Within these 2 paragraphs i need to describe the relationship between strategic and financial planning. How

88. ## english

Using plurals and possessives. How can you write a sentence about storing financial information effectively and efficiently.

89. ## Math

Tell whether the triangle with the given side is a right triangle;14mm, 19mm, 23mm Explain please.

90. ## math

find the local maximum and minimum values of f using both the first and second derivative tests. which method do you prefer? f(x) = x/(x^2+4)

91. ## Econ

Explain how an economist could use the slope of the yield curve to analyze the probability that a recession will occur and why the spread may matter.

92. ## Mathematics for Liberal Arts

Each round of the game costs \$1 to play. A round consists of you choosing a number from 1 to 10 and then picking a card at random from a standard deck of cards. I fyou pick a card with the number you chose, you win \$5. If you don't, you lose your dollar.

93. ## calculus

find an equation of the tangent line to the curve y = x √x that is parallel to the line y = 1 + 3x.

94. ## calculus

find an equation of the tangent line to the curve y = x √x that is parallel to the line y = 1 + 3x.

95. ## English

In my class we were reading a short story call The Pedestrian by ray bradbury and my teacher ask me a bunch of questions like for example What is the theme of the story but i don't get the question ? i didn't understand the story neither

96. ## algebra 1

15.6+x for x= -17.9

97. ## algebra

order the following numbers from greatest to least : 3.8 , -4.3 , -4.1 . express the answers by usinq < , , _>

98. ## Calculus

Find the points of inflection of the curve below. Round the answers to three decimal places. (Hint: All three are in a straight line.) y= (1+x)/(1+x^2)

99. ## physics

1. Three particles with charges of +11 mC each are placed at the vertices of an equilateral triangle with sides of 15.0 cm. What is the magnitude and direction of the net force on each particle? 2. A proton is released in an uniform electric field and it