# Questions Asked onMay 21, 2010

1. ## Chemistry!!

A chunk of silver has a heat capacity of 42.8 J for 1ºC and a mass of 181g. Calculate the specific heat of silver.

2. ## Programming

Design a program in pseudocode that calculates the amount of money a person would earn over a period of time if their salary is one penny the first day, and then doubles each day. The program should ask the user for the number of days. Display what the

3. ## Chemistry!!

How much heat is required to raise the temperature of 250.0 g of mercury 52ºC? The specific heat of mercury is 0.14 J/(gºC).

4. ## Science

A father swings his child around in a circle. The source of the centripetal force that keeps the child moving in a circle is _____. tension friction weight gravity

5. ## physics

a mass of gas emitted from the rear of toy rocket is initially 0.2kg/s. if the speed of the gas relative to the rocket is 40m/s and the mass of the rocket is 4 kg what is the initial acceleration of the rocket

6. ## Physics

A person takes about 20 breaths per minute with 0.5 litre of air in each breath. How much heat is removed per hour by the moisture in the exhaled breath if the incoming air is dry and the exhaled breath is fully saturated? Assume that the water vapour

7. ## Chemistry

A weather balloon at Earth's surface has a volume of 4.00 L at 304 K and 755 mm Hg.? If the balloon is released and the volume reaches 4.08 L at 728 mm Hg, what is the temperature? What gas law do you use?

8. ## Right Hand Rule

Consider an electron near the Earth's equator. In which direction does it tend to deflect if its velocity is directed in each of the following directions? (a) downward: WEST (b) northward . (c) westward d) southeastward I go the first one right using the

9. ## social studies

I am one of the United States' most famous attractions. I am 279 milies (449 km) long and 1 mile (1.6 km) deep. People come from all over to hike in and around me.

10. ## physics

a coin placed on a disc rotates with speed of 33 1/3 rev. per minute provided that the coin is no more than 10 cm from the axis calculate the coefficient of static friction between the coin and the disc

11. ## Algebra 2

A company manufactures bicycles in 8 different styles. Each style comes in 7 different colors. How many different bicycles does the company make?

12. ## chemistry

1. How many joules of energy must be absorbed to raise the temperature of 20 grams of water from 25°C to 30°C?

13. ## chemistry

Which of the following mixtures will be a buffer when dissolved in a liter of water? a. 0.1 mol Ca(OH)2 and 0.3 mol HI b. 0.3 mol NaCl and 0.3 mol HCl c. 0.4 mol NH3 and 0.4 mol HCl d. 0.2 mol HBr and 0.1 mol NaOH e. 0.2 mol H3PO4 and 0.1 mol NaOH i think

14. ## physicss

A long string carries a wave; a 5.40-m segment of the string contains three complete wavelengths and has a mass of 180 g. The string vibrates sinusoidally with a frequency of 45.0 Hz and a peak-to-valley displacement of 19.0 cm. how do you go about writing

15. ## physics

find the power of an engine in kilowatts which pulls a train of mass 600 tonnes up an incline of 1 in 100 at the rate of 60 km per hour. the weight of the engine is 200 tonnes and the resistance due to friction is 50 newton per tonne

16. ## algebra 2

There are twenty songs from which a disc jockey can chose five to play on her program. How many different arrangements of songs are possible for the program? Please check my work 20x19x18x17x16

17. ## Chemistry

How can you distinguish chemically between the following pairs of substances in one or two steps. a)HCl and H2SO4 b) KNO3 and K3PO4

18. ## physics

Light passes from air into water at an angle of incidence of 40.4°. Determine the angle of refraction in the water.

19. ## Chem

Can anyone show me how to balance: Ce+4 +H3AsO3 ==> Ce+3 + H3AsO4 using the half-reaction method?

20. ## Grammar

The lawyer told the assembled family that their wealthy uncle had left his entire fortune to his cat. Should the word lawyer or uncle be capitalized in this sentence?

21. ## algebra 2

The bag contains three red marbles, two blue marbles, and seven yellow marbles. Two marbles are randomly drawn from the bag. What is the probability of drawing a blue marble, replacing it, and then drawing a blue marble?

22. ## Poetry

Which one of the following lines best illustrates personification? A. A narrow wind complains all day. B. The fog comes on little cat feet. C. Spring is a dream unsung. D. She floated graceful as a dove.

23. ## Math

Rationalize the denominator. Assume that all expressions under radicals represent positive numbers. The square root of 3y^4 to the third root divided by the square root of 15x^4 to the third root. Here is what I have so far: I multiplied. The square root

24. ## statistics

use technology to find the P-value for a right-tailed test with n=21 and test statistic t=2.065 apparently, i don't have a stat calculator or statistical software to use to find the answer. so i need help how to find it by using the t distribution table..

25. ## Chemistry

Okay, so i've got 8 reactions i am supposed to balance "according to the half-reaction method". Only problem is, i was gone for the lesson, and my borrowed notes look like an entirely different language! So if you could please show me the steps and explain

26. ## physics

a piece of gold aluminuim alloy weighs 100g in air and 80g in water.what is the weight of the gold in the alloy if the relative density of gold is 19.3 and that of aluminium is 2.5

27. ## Algebra

The Kinetic energy (k)of a moving object varies jointly with it mass (m) and the square of its velocity (v).If an object has a mass of 22.5 kilograms and moving with a velocity of 20 meters per second has a kinetic energy of 4500 joules, find it kinetic

28. ## physics

A 0.077-kg arrow is fired horizontally. The bowstring exerts an average force of 50 N on the arrow over a distance of 0.75 m. With what speed does the arrow leave the bow?

29. ## ART

What are some careers in the visual arts?

30. ## art

Training needed for a career in art? Job opportunities for a career in art

31. ## Math

Simplify by taking roots of the numerator and the demoninator. Assume that all expressions under radicals represent positive numbers. The square root of 243x^6/y^20 to the fifth root. Here is what I have so far: the square root of 243x^6 to the fifth root

32. ## TIP: For this discussion response,

Writing is a very important component of online learning. College-level writing is more formal most of your daily writing. Describe the difference between college-level writing and casual writing. In chapter 4 of the book, six steps for writing are

33. ## LAL!(check my work thx)

check if the capitalized word is correct PARTICIPLES AND GERUNDS 1. americans have many different ways of CELEBRATING holidays. (gerund) 2. BRINGING customs and traditions from their homelands, immigrants add to the rich holiday mix in the US. (participle)

34. ## Chem

Can't figure this one out....how do you balance MnO4- + SO3-2 ====> SO4-2 + Mn+2?

35. ## statistical reasioning

An actuary at an insurance company estimates from exsiting data that on a \$1000 policy an average 1 and 100 policyholders will file a 20000 claim. in average of 1 in 200 policyolders will file a 50000 claim in average 1 in 500 policyholders will file a

36. ## algebra 2

Two cards are randomly drawn from a standard deck without replacing the card after the first draw. Find the probability of drawing a spade followed by a heart. Please type your answer as a fraction.

37. ## Math

Two angles are complementary. The sum of the measure of the first angle and one-fourth the second angle is 87.75 degrees. Find the measures of the angles? What is the measure of the smaller angle? What is the measure of the other angle. Both in degrees...

38. ## LAL!

check if the capitalized word is correct PARTICIPLES AND GERUNDS 1.SINGING songs such as "auld lang syne", people say good bye to the old year and hello to the new.(gerund) 2. HAVING 2 faces, janus looked forward and backward.(participle) 3. some of our

39. ## algebra 2

You roll a red die and a green die. Find the probability of rolling a four on the red die and a three on the green die.

A) What is the intensity of sound at 148 dB? Units: W/m^2. I found this to be 630.9573445 using Io*10^B/10 in which B= 148 dB. B)Compare it to that of a whisper at 20 dB. Using the same formula i find this to be 1e-8 but it is marked as wrong. Please help

41. ## Physics

carbon-14 is produced in the atmosphere primarily by what?

42. ## human resources

Do you believe humans can harvest forest resources in an environmental friendsly way, or should national forest be left in their natural state in which resources are not used to benefit humans?

43. ## economic

I will deposit \$1000 per year for 25 years.� Assuming a 5% compound interest rate, what will my account be worth in 25 years? �Now assume a 10% compound rate and calculate my future balance

44. ## World Literature and Language

List the characters in the story. Write one to two sentences on the defining characteristics of each one, providing at least one citation to illustrate your comments. How do the villagers respond to the spider girl? What do you think their response

45. ## physics

An elevator cab in the New York Marriott Marquis has a mass of 4.96 x 103 kg and can carry a maximum load of 1.80 x 103 kg. If the cab is moving upward at full load at 3.71 m/s, what power is required of the force moving the cab to maintain that speed?

46. ## sociology

How does the merchandise displayed in toy stores reflect the issues of race, gender, and class?

47. ## math

HELP ! I just don't get this. The perimeter of a rectangle is 40 m. The length is 5m more than twice the width. Find the dimensions. What is the length? What is the width? I need to simplify my answer... PLEASE HELP ME>

48. ## alegra

solve 4y + 10 = 46

49. ## LAL!

are this sentences GERUNDS 1. in almost every american town, holding parades on the 4th of july is a tradition. ( IF its a gerund is the gerund used as a subject) 2.the keeping of the fast of ramadan occurs during the 9th month of the islamic calender.(IF

50. ## Algebra 1a

I posted this early, I don't understand the answer, Two angles are complementary. The sum of the measure of the first angle and one-fourth the second angle is 87.75 degrees. Find the measures of the angles? What is the measure of the smaller angle? What is

51. ## Enviromental science

Do you believe humans can harvest forest resources in an environmental friendsly way, or should national forest be left in their natural state in which resources are not used to benefit humans?

52. ## english

i have to write a declaration of independance what key words or [hrases should i use.

53. ## English

1. How much is gimbap? 2. How much is a gimbap? 3. How much is two gimbaps? 4. How much are two gimbaps? 5. How much are two rolls of gimbap? 6. I want to eat some gimbap. 7. I want to eat some gimbaps. 8. I want to eat some rolls of gimbap. (Which

54. ## chemistry

what is the formula of a compuond formed by combining 50g. of element X and 32 g. of oxygen

55. ## math

Why does inverse variation not hold (as x increases y decrease) when the constant of variation is negative?

56. ## Calculus

Find the area between y=cosx and y=sinx from 0 to 2pi. To find the zeros, I combined the equations cosx-sinx=0 What's next?

57. ## World History

Can you help me with this question What are the boers famous for?

58. ## world history

Is this correct? What was Hong Xiuquan famous for? Answer: He was famous for establishing the Taiping Heavenly Kingdom.

59. ## algebra 2

Two cards are randomly drawn from a standard deck replacing the card after the first draw. Find the probability of drawing a Jack followed by an Ace.

60. ## accounting

I am looking for the answer to this assignment. I am not an accounting major and have no clue. Please help Assignment Name: Unit 4 Individual Project Deliverable Length: 2-3 paragraphs Details: Les Fleurs, a boutique in Paris, France, had the following

61. ## math

A cellular phone company offers a a contract for which the cost C, in dollars, of t minutes of telephoning is given by C=0.25(t-600) + 40.95, where it is assumed that t ¡Ý600 minutes. What times will keep costs between \$83.45 and \$104.20? For the costs

62. ## math

I posted this early, I don't understand, Two angles are complementary. The sum of the measure of the first angle and one-fourth the second angle is 87.75 degrees. Find the measures of the angles? What is the measure of the smaller angle? What is the

63. ## algebra 2

The nurseryman brought six different varieties of trees to plant in six locations in the park. In how many different ways can he plant the trees

64. ## algebra 2

A caterer offers a choice of five desserts from a list of eight for the dessert bar at the prom. How many different groups of desserts could be served?

No one can predict a natural disaster or world crisis. When a hurricane or flood or a pandemic strikes a country, who is most likely to respond first? Which economic system is the best solution to handling a crisis of epic proportion?

66. ## math

A caterer offers a choice of five desserts from a list of eight for the dessert bar at the prom. How many different groups of desserts could be served? please check my answer = 120

67. ## math

Which should be used a permutation or combination? Determine the number of different ways in which a committee of four can be chosen from a group of twelve members? please check my answer = combination

68. ## Geo

For questions 33 and 34, write the equations for the lines parallel and perpendicular to the given line through the given point (one point for each equation). x - 3y = 9 through (2, -1)

69. ## psychology 230

wat influence does culture have on personality?

70. ## algebra

x^2-4/X^2+3x+2=(x-2)(x+2)/x(3x+2)=(x-2)/x3 check this problem

What advantages might a socialist system have in responding to the needs of people struck by an emergency situation like the earthquake that occurred in Haiti in January, 2010?

72. ## MBA

Imagine that you have to make a presentation on your MBA project to a group of your professors and industry experts. Prepare the following – a) A general statement of purpose b) A specific statement of purpose c) The key idea d) A brief audience analysis

73. ## geography

can you help me with my 3-d top map construction project of a pear island. I would like you to explain to me step by step on how to do it and make steps explanatory for me.The materials Iwas asked to use was a foam board, string, markers, crayons scissors,

74. ## Math

Could someone please help me with this math problem? This is what I have so far but now I am stumped as to what to do next. Multiply and simplify by factoring. The square root of 18 * square root of 40. The square root of 18= the square root of 9*2. The

75. ## psychology

As we age, our physical functioning deteriorates. This is most likely due to reduced efficiency in basic cellular processes. One cause of this is thought to be

76. ## science

a 75.0 pF capacitor is connected to a 12V battery. How much charge is on each plate?

77. ## english

what are the indefinite pronouns

78. ## algebra

How do you solve this math problem? h= -8t^2+40t then it says: when t=0 and when t= 5 there are 2 questions that i have to answer: 1.) find the value of h 2.) graph this equation - i don't know if i did the problem right but when i answered #1 i got h=0, -

79. ## Math

Round 1,643,253 to the nearest hundred thousand. I say it's 1,600,000 but the workbook says 1,700,000. Please explain.

80. ## medical

For each body system, identify which body approach(es) might best be used to organize information. Choose only from the following approaches: microscopic-to-macroscopic, body directions and planes, body cavities, and quadrants and regions

81. ## Compters and software in a bussiness

How are computers and software aplications utilized in a bussiness setting to solve bussiness problems?

82. ## math

how do I graph a radical equation? With the numbers t=0 (2010) 3000, t=1(2011)4500,

83. ## Algebra

Using the formula: w=Cr^-2 where C is a constant, and r is the distance that the object is from the center of Earth. W is the weight. 1- Suppose an object is 100lbs when it is at sea level. Find the Value of C that makes the equation true. Sea level is

84. ## math

1. In a survey of a TriDelta chapter with 46 members, 13 were taking mathematics, 33 were taking English, and 6 were taking both. How many were not taking either of these subjects?

85. ## LAL!

in this sentence is the verb losing used as main verb or gerund as direct object? they are definitely LOSING that game!

86. ## EDU

Discuss the different developmental eras of American education. How did the philosophies and practices of those eras scaffold into what we see today?

87. ## algebra 2

If a McBurger employee is expected to work four of the seven days in a week, how many different weekly schedules are possible for the employee?

88. ## algebra 2

In how many different ways can you roll doubles in a monopoly game when you use two die?

89. ## algebra 2

Which should be used a permutation or combination? Determine the number of different ways in which a committee of four can be chosen from a group of twelve members?

90. ## LAL!

how can i write DREAMING in a sentence as gerund

91. ## math

solve equation if equation has no solution state so,simply when necessary 2/3x+1x=1/6 1/x+4-1/x-2=x+2/x^2+2x-8 help me please

92. ## math

In how many different ways can you roll doubles in a monopoly game when you use two die? Please check my answer = 6

93. ## math

If a McBurger employee is expected to work four of the seven days in a week, how many different weekly schedules are possible for the employee? Please check my answer = 840

94. ## math

The nurseryman brought six different varieties of trees to plant in six locations in the park. In how many different ways can he plant the trees Please check my answer = 720

95. ## algebra

Let x = 10, y = 4, z = 2, and evaluate the following. x − y + z =

96. ## Brittish lit

the king james bible version of ecclesiastes, what poetic element is used the most?

97. ## Statistics For The Behavioral And Social Sciences

A researcher conducts a t test for dependent menas in which it is predicted that there will be a decrease in unemployment from before to after a particular job-skills training program. The cutoff "t" needed is -1.8333. The standard deviation of the

98. ## science

How do you build a pasta car?

99. ## physics

a particle of mass 0.3kg vibrates with a period of 2 sec. if its amplitude is 0.5m what is its maximum kinetic energy

100. ## English

1. How much is a one-day ticket? 2. How much is one day ticket? 3. How much is a one day ticket? 4. How much is an hour ticket? 5. How much is a an hour ticket? 6. How much is a one hour ticket? 7. How much is a one-hour ticket? 8. How much is a morning

101. ## social studies

what is economic globalization? Need 3 examples from different parts of the economy.

WHAT is a prism?The different shapes that make a prism and finally what prism can you make with a pentagon base?

103. ## Pre Algebra

Transversals?

104. ## English

Can you please tell me if the following senences are possible? 1)I'm always stricter than him (or than he is) when evaluating the students' tests. 2) In spite of being ill (Can you say "despite being ill"), he decided to go for a walk. 3)He was ill. Yet

105. ## programmning code

Is this code right? Declare Integer days, counter = 1 Declare Real penny = 1, salary, total = 0 Display "Enter a number of days." Input days Display "Days",TAB,"Salary While counter

106. ## chemistry

does a solution have to involve a liquid?