# Questions Asked onDecember 4, 2008

1. ## calculus

at a given instant the legs of a right triangle are 5cm and 12 cm long. if the short leg is increasing at the rate of 1cm/sec and the long leg is decreasing at the rate of 2cm/sce, how fast is the area changing

2. ## Chemistry

what is the name for the following coordination compounds or ions? 1. [Al(H2O)6] Br3 2. [Cr(NH3)6] Cl3 3. K3[FeF6] 4. [Zn(OH)4]-2

3. ## physics!-concervation of energy equations

2. a 755N diver drops from a board 10.0 m above the water's surface. Find the divers speed 5.00 m above the water's surface. then find the diver's speed just before striking the water. 3. if the diver in item 2 leaves the board with an initial upward speed

Is the name for CuH2PO4 copper dihydrogen phosphate? I don't really understand the ones with the H2 in them... thanks

5. ## PHYSICS

1. A 4.0 N force acts for 3 seconds on an object. The force suddenly increases to 15 N and acts for one more second. What impulse was imparted by these forces to the object? 2. A railroad freight car, mass 15,000 kg, is allowed to coast along a level track

1)FInd an equation of the line containting the given pair of points. (-8,0) and (0,5) MY ANSWEAR: (5/8)X+5 2)Find an equation of the line having the given slope and containing the given point. m=6 (8,1) MY ANSWEAR: 6X-47

7. ## math

four diesel ships left a port at noon;january2,1953.the first ship returns to this port every 4 weeks, the second every 8, the third every 12,and the fourth every 16.when did all four ships meet again in the port?

8. ## US history

what was the parliament's reaction to the Boston Tea Party of 1773 ?

9. ## chemistry

Please help ~~ Because i don't ever know the reaction in organic compound .. Do anyone has the data bank of the organic chemicals ? I cannot find out what are the compound in the reaction with it ~~ 1. What do butylamine give when it is dissolved in water

10. ## physics

a very light rigid rod with a length of .500m extends straight out from one end of a meterstick. the meterstick is suspended from a pivot at the far end of the rod and is set into oscillation. determine the period of oscillation (hint: use the

11. ## physics

a crane drops a .3 kg steel ball onto a steel plate. the ball's speeds just before impact and after are 4.5 m/s and 4.2 m/s respectively. If the ball is in contact with the plate for .03 s, what is the magnitude of the average force that the ball exerts on

12. ## English

What is a unnecessary shift, necessary shift, and a no shift?

13. ## physics 3 !!!

Assuming your skin temperature is 37.2°C and the temperature of your surroundings is 20.5°C, determine the length of time required for you to radiate away the energy gained by eating a 265 Calorie ice cream cone. Let the emmissivity of your skin be 0.915

14. ## Biology

-Rank the following terms from simplest to most complex: cells, organelles, organs, tissue, organism. -If a cell is like a school, then the nucleus would be...? -Which organelle serves as a "workbench" for the ribosomes?

15. ## physics

2. a 755N diver drops from a board 10.0 m above the water's surface. Find the divers speed 5.00 m above the water's surface. then find the diver's speed just before striking the water. 3. if the diver in item 2 leaves the board with an initial upward speed

16. ## Organic Chemistry

Why does alcohol have a higher boiling and melting point than other hydrocarbons like alkanes? Is it because of a weak intermolecular force, or the alkyne has low pKa.

17. ## PHYSICS

1. A 4.0 N force acts for 3 seconds on an object. The force suddenly increases to 15 N and acts for one more second. What impulse was imparted by these forces to the object? 2. A railroad freight car, mass 15,000 kg, is allowed to coast along a level track

18. ## calculus

use euler's method with delta x=0.1 to estimate y when x=0.4 for the solution curves satisfying y(0)=1 and y(-1)=0. I made the table but i don't know what values to use or plug in.

19. ## disease

what to do so that you do not get the rocky mountain spotted fever

20. ## English

Write the verbs in the following sentences. Then identify each verb as bse form (b), present participle with auxiliary verb (pp), simple past form (past), or past participle with auxiliary very (past p), Some of the sentences have two verbs. First

21. ## Physics

What are some possible uses for gelled methanol and why was it never used as a fuel in transportation?

22. ## Chemistry

As you go across the period of the periodic table, you are increasing the atomic number while decreasing the atomic radius, but what causes this trend?

23. ## geography brazil

the new capitol of brazil was built in the interior called------- its purpose to get people to move. brazil is the largest -----in south america i thought it was country but it begins with an n. thank you

24. ## Math

The length of a rectangle is 8 cm greater than its width. Find the dimensions of the rectangle if its area is 105 cm. How do I solve?

25. ## social help needed

1 how did the earliest people adapted their environment? 2 how the development of agriulture changed the way people lived? 3 describe the contributions early people made yo later civilizations?

26. ## Speed questions

N city is 635 k.m. away from F city. Mr.L set off from N city to F city at 8:20 am at a speed of 70km/h. Mr.G left from f city to N city 30 min later at speed of 80km/h. At what time did they pass each other? (Both trveling on same road.)

27. ## Thermodynamics

5 mol of an ideal gas is kept at 394◦C in an expansion from 1 L to 5 L .How much work is done by the gas? Answer in units of J.Given: R = 8.31 J/K/mol ,

28. ## Ag. Tech

What are some examples of genetic modification of peppers?

29. ## english

How can you tell the difference between coordinate conjunctoins,subordinate conjunctoins, and correlative conjunctions?

asked by i'm not telling you
30. ## Math

When you're finding the sign of f' and f'' to find a local maximum/minimum, concavity and inflection point where do you substitute the tangent/critical points? In which function? f(x), f'(x) or f''(x)?

31. ## physical science

Describe how Avogadro’s constant relates to a mole of a substance.

32. ## Social Studies

I am from outerspace. I like cats. If you ask me to dinner I will say "No problem."

33. ## math

write the slop - intercept form of the equation wiht the given slope and intercept slope:2/5 x-int=4.5 i knwo how to do it with y-int but how doyou do it with x- int?

34. ## PHYSICS

A banked circular highway curve is designed for traffic moving at 60 km/h. The radius of the curve is 205 m. Traffic is moving along the highway at 40 km/h on a rainy day. What is the minimum coefficient of friction between tires and road that will allow

35. ## Ethnics

List two to three characteristics of Orientalism. How may Orientalism and prejudice contribute to hate crimes against these groups?

36. ## Religions of the World

What are Hinduism Central beliefs ?

37. ## physical science

Determine the molar mass of the following elements: a. manganese, Mn c. arsenic, As b. cadmium, Cd d. strontium, Sr

38. ## physical science

List the two equivalent conversion factors for the molar mass of silver, Ag.

39. ## physical science

Explain why a graph showing the relationship between the amount of a particular element and the element’s mass is a straight line.

40. ## physical science

Which has more atoms: 3.0 g iron, Fe, or 2.0 g of sulfur, S?

1)Find an eauation of the line containing the given pair of points. (2,1) and (6,3) MY ANSWEAR: Y=(1/2)X 2)Decide whether the pair of lines is perpendicular, parallel, or neither. --What is the slope of 4x+2y=3 4x+2y=4 MY ANSWEAR: (1/2) AND -2

42. ## grammar

Fill up the blanks using if or unless. 1.we can have dinner---- the food is ready. 2.Don't write anything----you are sure about the answer. 3.Please help me out-----you know the solution to this problem.

43. ## check math

3) FInd an equation of the line containting the given pair of points. (3,4) and (9,6) MY ANSWEAR: 2/5X+9 4)Find an equation of the line having the given slope and containing the given point. m=2/3 (7,-7) MY ANSWEAR: 2/3X-14/3X

How do i solve this algebra problem? (5-a)divided by (a+7)=1/4 with 1,2,3, as solution set

45. ## Agriculture

Where can I find out in what forms peppers have been genetically modified?

46. ## Social Studies

What basic problem confronted the Puritans who wanted to migrate to America? a. They didn't have enough money to survive in the harsh environment of New England. b. Many people feared the danger of going to the colonies after the Mohawk revolt. c. King

I was out sick & am copying a friends notes from class. My question is what does e- stand for? it easier to form a positive ion with a low ionization energy because a positive ion is formed by removing an e-(I think maybe electron) and the other one is

48. ## math

Betty has nine pink ribbons and eight blue ribbons. What fraction of Betty's ribbons are pink? *I am trying to teach my little brother how to do this. How can you write it so i can tell him how to answer the other problems to? I don't just need the answer

49. ## Science

Why are viruses not part of the domain and kingdom of living things?

50. ## english

Tick the correct option in eash of the following sentences 1.The princess had iong golden hair (AND/BUT/OR)all her maids admiredit. 2.Hard work is not easy (AND/BUT/OR)its fruit is sweet. 3.Submit your homework (AND/BUT/OR)the teacher will scold you.

51. ## geometry

I don't get math and i fail at it..i try really hard to make 100% but i cant..can anyone help me?tutor me?please?

52. ## Organic Chemistry

Explain why the terminal alkyne has an acidic proton compared to alkane and alkene.

53. ## math

solve and simplify the answer completely by using pure imaginary numbers/complex numbers. 2x^2+3x+2=0

54. ## Math

M=-9 (4,8) Is the answear 9x-27

55. ## Math 115

You missed 12 questions on a 60-question test. What fraction names the part you got correct? (Reduce) On this would I divide 12 into 60 so I could make the fraction this one I just need a little help.

56. ## MATH

Can someone help me with this question please. Raymond opened a savings account that pays 1.5% interest on his balance. The interest he received so far on his balance of \$500 is \$3.75. Can you tell from this info how long he’s had the \$500 in the

57. ## Trigonometry

Suppose that after you are loaded into a FerrisWheal car, the wheel beguins turning at 3 revs/min.The wheal had a diameter of 20m and the bottom of the seat of the wheel is 2m above the ground. Express the hight of the seat above the ground as a function

58. ## cultural diversity

What are the most significant similarities between the Chinese Americans and Japanese Americans? What are the differences?

59. ## calculus

Find the smallest possible area of an isosceles triangle that is circumscribed about a circle of radius r

60. ## calculus

find two positive integers such that the sum of the first number and 4 times the second number is 1000 and the product of the numbers is as large as possible

61. ## math

A rectangle picture window is 4 ft. by 7 ft. Polly wants to put a trim molding around the window. How many feet of molding should she buy? Do I just add both sides to get my answer?

62. ## Math 115

List the factors of the number 27. 1,3,9 this is correct right?

63. ## hstory

?what was signed in 1215,required the king to follow the same laws as other english people?

64. ## algebra word problem

The mass of Saturn is about 5.688 10^23 metric tons. The mass of the sun is about 1.998 x 10^27 metric tons. About how many times the mass of Saturn is the mass of the sun? Give answer in scientific notation. The mass of the sun is about ----- times the

65. ## math

Write a proportion that is equivalent to the statement: If 3 gallons of gasoline cost \$5.37, then 8 gallons will cost \$14.32. On this one I have know idea how to perform this equation looked for examples no luck can someone help please

66. ## uite rate

unit rate of 250 miles in 4hrs

67. ## Math

If it takes painter # 1 three hours to paint a house, and painter # 2 eight hours to paint a house, how long would it take them if they work together?

68. ## math

The table lists data regarding the average salaries of several professional athletes in the years 1991 and 2001. year average salary 1991 \$263,000 2001 \$1,430,000 a)Use the data points to find a linear function that fits the data. b) Use the function to

69. ## algebra

write the expression using only positive exponents 1.13^6 2.8^-9 3.xy^0 4.6g^-5

70. ## math

Could someone please check these for me? 1. Find the function value if x=2 f(x)=x^3 F(2)=8

71. ## Algebra2/Trig

sqr(x^2-4)+(x^2)/x^2+1 I got ((x^2+1)*sqr(x^2-4)+x^2)/x^2+1 But my teacher gave (sqr(x^2-4)+x^2)/x^2+1 I did the problem over again but I can't figure out why my teacher got the answer. Can someone confirm that my teacher is right or am I right? sqr=square

72. ## Gammar Check!

Please can someone kindly check the sentence structure and any wrong grammar. For example, Source B and C, these sources suggest that Stalin was too mad and mentally unstable to rule the country. Source C also suggests that he would not have anyone better

73. ## math

Two numbers have a sum of 47 their difference is 5. What are the two numbers?

74. ## Calculus

What methods can I use to prove that the limit as (x,y,z)--> (0,0,0) of a function of 3 variables does not exist?

75. ## Calculus

Is the series (8+1^n)/(1+2^n) divergent or convergent?

1) Kevin is making yogurt bars for a picnic. He has 6 rows of yogurt bars on a tray. There are 3 bars in each row. How many yogurt bars does Kevin make? Answer: 6 x 3 = 18 yogurt bars 2) HOW CAN YOU USE MULTIPLICATION FACTS FOR 1 AND 2 TO FIND 3 x 7? I

How can you use two multiplication facts to multiply 6 x 9? Use the array below to explain how you might multiply. ********* ********* ********* ********* ********* *********

78. ## Financial Management

- Proposal A: The auto airbages prodction divion submitted a proposal for anew airbag model the would cost \$ 2,355,600 to develop. The antipated revenue stream for the next 10 years was \$ 400,000 per year - Proposal B: The aerospace divison proposed the

79. ## Trig

Please explain inverse functions. i.e. find angle if Sin x = 2.3 divided by 8.15. Answer 16.30 degrees. How did they do that??? Tks

80. ## english

you are either for me or against me. which fallacy is this?

81. ## social studies

unscrambl tteennridc a persons last name near civil war time

82. ## another algebra question

Here's another thing I must solve: For each graph of a function, determine these things: a. f(1) b. domain c. any x-values for f(x)=2 d. range I can't put the graphs I need up here, but is anyone able to explain how you would find these things? Thank you

83. ## Algebra

Right now we are learning about functions, relations, etc. and I am kind of confused. Here is what I have to answer: Determine whether each of the following is a function. Identify any relations that are not functions. Domain A set of avenues

84. ## pre-algebra

write the expression using only positive exponents 1.13^6 2.8^-9 3.xy^0 4.6g^-5 how do you do this? please and thankyou

85. ## science

does any one know about what website you can learn about ( heating and cooling) example: in mercury thermometers what temperature ranges do they measure?

86. ## chemistry

how many moles of oxygen atoms does 1.2x10^25 diphosphorus pentoxide molecules have? hwo many oxygen atoms are in 1.25 mol sulphur trioxide? i don't understand these

87. ## science

Can you give me an idea on how to present a turtle, I have to be creative with supplies

88. ## physics **

When people sleep, their metabolic rate is about 2.6 10-4 C/(s·kg). How many Calories does a 69 kg person metabolize while sleeping 9.0 hours? ? Cal

89. ## physics 2 **

A blacksmith drops a 0.60 kg iron horseshoe into a bucket containing 25 kg of water. (a) If the initial temperature of the horseshoe is 600°C, and the initial temperature of the water is 40°C, what is the equilibrium temperature of the system? Assume no

90. ## Evolutionary Psychology

It’s the year 2234 and you are an explorer‐scientist who has been sent to a distant planet to study two intelligent life forms recently found there. One lives in the resource‐poor desert regions of the planet. Tests show this creature (a smartine) is

91. ## physics 4**!!

Consider a double-paned window consisting of two panes of glass, each with a thickness of 0.500 cm and an area of 0.880 m2, separated by a layer of air with a thickness of 1.90 cm. The temperature on one side of the window is 0.00°C; the temperature on

92. ## earth

how do isostatic adjustments affect isostasy

93. ## math b

i need help with these problems please [6-2x]

94. ## Physics, Collisions

A pendulum of a given mass is pulled back through a given vertical height and released to swing back down to a 'wall' where it impacts. Can i use mg delta h to get E kin; and then use E= half mv^2 to get the collision impact velocity? Would someone check

95. ## computers

how do you scan something in the computer?

96. ## Physics

The Mariana trench is located in the Pacific Ocean at a depth of about 11800 m below the surface of the water. The density of seawater is 1025 kg/m3. (a) If an underwater vehicle were to explore such a depth, what force would the water exert on the

my four factors add up to 48. I am a number between30 and 40. What number am I?

98. ## English

Question : Matthew Antony, Grant’s former teacher tells him, “What do you know about life?” He tells him, “ You have to go away to know life.” – What does this mean to you? I need some pointers to help me answer my question... (like extra

what does it mean to generate something?

100. ## Living Enviornemt

What is denaturization? (Dealing with Enzymes)

would you expect the following atom to gain or lose electrons when forming ions? what ion is the most likey? The atom is In how would i do this?

fill in the name or formula for the oxyanions of chlorine the only one i need help with is the name for [ClO4]-

How do you solve this by factoring? 4p^2 + 121 = 44p I seriously don't understand and it's frustrating for me. Please help. (:

104. ## Foreign Languages

Does anyone have any tips for listening exams in a foreign language? My teacher only plays the tape once, and we have very little time to think the question through. Often times, the people on the tapes have different French accents than the ones I am

105. ## Algebra: factoring

I need to find the value of x. 9x^3 + 9x = 30x^2 It's confusing because apparently I have to do 9x^3 + 9x and then add the + 30x^2 to it, and then make it equal 0, so it ends up like this: 9x^3 + 9x + 30x^2 = 0 And afterward, I would factor it. How do you

106. ## Math

(z+1)(z-5)=16 how would you solve this?

107. ## science

How is the process of spraying pestices to kill mosquitoes help produce mosquitoes that are resistant to pesticides

108. ## bio

If a cell is like a school then the nucleus would be...? rank the following terms from simplest to most complex: cells, organelles, organs, tissue, organism

How.can spraying.pesticides to kill mosquitos help produce mosquitos that are resistant to pesticides.

110. ## science

7) - An object accelerates (changes its speed) only if the forces acting on it in one direction are greater than the forces in the opposite direction, All of the following objects will accelerate EXCEPT? A) a ball striking a wall, in which the force of the

111. ## Calculus

Find the solution subject to the initial conditions. dP/dt = -2P P(0)=1 dP/-2P = dt then do i take the antiderivative? what would i do next??

112. ## Calculus

Find the partial derivatives of f(x,y)=(sinx + y)^(y sinx)

113. ## Math

I need to find a composite number whose factorization has seven prime numbers. Then I have to write it using exponents

114. ## calculus

find solution to differential equation given the initial conditions DQ/dt=Q/5 Q= 50 when t= 0 i don't understand this one because of the division sign.

115. ## Geology

I need help with a radiometric dating equation. I am trying to determine the age of a sample that has a 40AR/40K ratio of 4.5. I understand the equation of D=Do+N(e^.693t-1). I understand I would set Do to zero. But what is D? I went to geology tutoring

116. ## math

our man Ostap was going hame from kiev. He rod halfway-fifteen times as fast as he goes on foot. The second half he went by ox team. He can walk twice as fast as that. Would he have saved time if he had gone all the way on foot?

117. ## math

i need help with these problems please [6-2x]

118. ## scince test

20 question simple machine test websites

120. ## Physics

If you take a bite of pizza, the sauce may burn your mouth while the curst, as the same temperature will not. Explain.

121. ## math

where does the decimal go in this problem 63 diviend by .5

122. ## math

our man Ostap was going hame from kiev. He rod halfway-fifteen times as fast as he goes on foot. The second half he went by ox team. He can walk twice as fast as that. Would he have saved time if he had gone all the way on foot?

123. ## Religions of the world

Do Hindus have Ethics and morality? If so what are they?

124. ## Math

1000 cubic measures?

Good evening ~ I have 2 questions. Kelsey was assigned math homework. He was given 8 word problems to solve. He estimated that it would take him 5 mins. to solve each problem (THAT WOULD TAKE 40 MINS. FOR KELSEY TO COMPLETE HIS MATH HOMEWORK) ? HOW TO

what if santa ws in the middle of a ladder then went up three steps then went down 5 and went up 10.it is

127. ## MGT

I still need more help: One of the most important things a supervisor can do to improve overall effectiveness and productivity in an organization is having a good communication line with all the employees. Having effective communication is the key to

128. ## english grammar

Fill up the blanks with conjunctions. 1.You can write the letter-----or you can type in on the computer.(or/but/and) 2.We can order fish curry and rice ---we can order something vegetarian.(and /or /but).

129. ## s.s

What was the debate between North and South over counting slave populations?

130. ## computers

ok so my mom put a password on our computer so we won't get on can someone help me i what to find out how to get in we was windows xp home.....

131. ## Education

What significant issues would puberty and adolescent development present in the classroom?

132. ## Health

Can poor nutrition early in life be mitigated to allow for healthy physical growth and development later?

133. ## government

no person is above the law is what principal of the constitution

134. ## Computers

In reference to Microsoft Excel.... Explain what a compound document is, and why might you need to create a compound document. What are some examples of potential compound documents

135. ## Phenotype of a smidget???

The smidget is a tiny mammal whose sex (like humans) is determined by the presence/absence of a Y chromosome and whose dosage compensation mechanism is just like humans as well. But, this mammal differs from humans in having only two of its thousands of

136. ## history

what was the role of women during the roman times??????

137. ## College Genetics (Nice girl needs help)

The smidget is a tiny mammal whose sex (like humans) is determined by the presence/absence of a Y chromosome and whose dosage compensation mechanism is just like humans as well. But, this mammal differs from humans in having only two of its thousands of

The smidget is a tiny mammal whose sex (like humans) is determined by the presence/absence of a Y chromosome and whose dosage compensation mechanism is just like humans as well. But, this mammal differs from humans in having only two of its thousands of

139. ## math

i don't under stand this: i have to replace letters w/ #'s 0-9 do+re=mi; fa+si=la; re+si+la=sol

140. ## epidemics

What features of epidemics in human populations are NOT possible to model with a simulator on a computer?

141. ## physics

Why is it better to put ince rather than an equal mass of cold water into a drink you want to chill?

142. ## physics

Why is it better to put ince rather than an equal mass of cold water into a drink you want to chill?

143. ## history

What did the Ancient Greeks do in order to feed their growing population?

144. ## health

What is the temporary condition of being unable to conceive

145. ## human resource

I neede help in writing a five-year career development plan

146. ## Geography

what are renewable and nonrenewable resources? what will happen when nonrenewable resources run out? how can we save nonrenewable resources?

147. ## Religions of the world

What are historical figures and events of Cofucianism?