# Questions Asked onNovember 21, 2009

1. ## physics

It has been suggested that rotating cylinders about 12 mi long and 5.4 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall

2. ## physics

What is the tangential acceleration of a bug on the rim of a 12.0 in. diameter disk if the disk moves from rest to an angular speed of 75 rev/min in 4.0 s?

3. ## Calc

how do I integrate x^4-3y^3+2y^2? thanks

4. ## College Math II

a^4 - ab^3 = I have asked this question on many web sites and still cannot find the steps on how to solve this problem. Can you please help.

5. ## Algebra 2

Find the last digit in 39999. I can not figure this one out. Can some one explain this

6. ## Algebra 2

Find a positive integer smaller than 500 that has a remainder of 3 when divided by 5, a remainder of 6 when divided by 9, and a remainder of 8 when divided by 11.

7. ## Music

I need to kown all 8 letters music instruments name.

8. ## math

1. (1 pt) Let g(y) = 8y2 + 13y + 5. A function f is known to be continuous on ( −∞, ∞), to satisfy g ◦ f (x) = 0 for all real x and it is known that the value f (8) is not equal to −1. You have enough information to determine f precisely.

9. ## spanish

We sing a song entitled He drinks tequila,and she talks dirty in spanish ^ there are a couple of phrases that I don't know the meaning of could you help please. the first is "a brasa mi puerta" The second is "to dal ay nochay" I hope this is not offensive

10. ## HCA 220

summarize the processes of digestion, respiration, and circulation and how are they interrelated

11. ## sociology

is it difficult to accurately measure prejudice?

12. ## English

1. It can give you happiness when you give happiness to others. (What does 'it' refer to in this sentence? What functions does 'it' have?") 2. Volunteer work is not something that you must do. 3. Volunteer work is not anything that you must do. (Are both

13. ## English

1. Doctors Without Borders help many sick people in poor countries. 2. Doctors Without Borders helps many sick people in poor countries. (Do I have to use 'help' or' helps'? Which one is correct?)

14. ## AP World History

How do I structure a DBQ essay in the body paragraphs?

15. ## sat

the bus would not have had to take the A long detour instead of the main B highway if the bridge did not become C treacherous in the aftermath of an ice D storm. why is C wrong? thanks so much !

16. ## criminal justice

a 700- to 1,050-word essay in APA format on the qualities of effectiveness versus ineffectiveness of judges. In your essay o Describe the responsibilities of judges. o Identify attributes of both effective and ineffective judges. o Provide an example of an

17. ## Ms Sue geography

sorry to ask again for help but i need to include a graph in my report about the turkish earthquake but i cant think what graph to do. it needs to show relevant information i was going to do a graph about how many people died but i dont know if that

18. ## education

what is book keeping in educational management give me articles on physical plant planning in educational management

19. ## Maths

keep getting stuck for integrate e^(bx) cos x i get = cos x e^bx/b - int -sin x e^bx/b = cos x e^bx/b - -sin x e^bx/b^2 - int - cos x e^bx/b^2 this is where i get stuck please help

20. ## dynamath

TRUNK AND TAILS bella the dog weighs 72 pounds. that's ABOUT 8628 pounds less than tarra weighs. how much does tarra weigh? i think the answer is 8556 or 8030.

21. ## sat essay

assignment:should people always prefer new things, ideas, or values to those of the past? Should people always prefer new thing to the old? Many people argue that we should not accept the new easily and should sick to the old. As far as I am concerned, we

22. ## physics

a uniform disk and a uniform sphere are rolled down an incline plane from the same point and intially they are at rest. Find the difference in time they arrive at a mark on the plane which is 6 meters from the starting point. The sphere has twice the mass

23. ## physics

a uniform disk and a uniform sphere are rolled down an incline plane from the same point and intially they are at rest. Find the difference in time they arrive at a mark on the plane which is 6 meters from the starting point. The sphere has twice the mass

24. ## physics

A children's merry-go-round in a park consists of a uniform 200kg disk rotating about a vertical axis. the radius of the disk is 6 m and a 100kg man is standing on the outer edge when the disk is rotating at a speed of 0.20rev/s. how fast will the disk be

25. ## gr 12. advanced functions

Trig identity Prove: cos2x tan(pie/4 - x) ------- = 1 + sin2x

26. ## College Math II

_m^2 -1___ * _2m -2____ = (m – 1)^2 3m + 3 Actually my computer won't allow the line and these are like fractions. m^2 - 1/(m-1)^2 * 2m - 2/3m +3 = I am having a problem trying to follow the steps to show my work and come out with the correct answer.

27. ## College Math II

x/x – 1 - 3/x = 1/2 I am not sure how to solve this equation and show my work. My problem just says to solve the equation. Thanks.

28. ## College Math II

x/x – 1 - 3/x = 1/4 My problem says to show the work and to solve the equation. I am not sure how to use the steps to show my work and answer the problem. Thanks.

29. ## math

Bob has three sacks of apples and three more apples in his pocket. Each sack contains the same number of apples. Altogether, Bob has 33 apples. How many apples are in each sack? Solve with a Linear Equation is this right 3x+3=33 3x=30 30/3=10 x-5=10

30. ## average math

TRUNK AND TAILS bella the dog weighs 72 pounds. that's ABOUT 8628 pounds less than tarra weighs. how much does tarra weigh? i think the answer is 8530.

31. ## Math

Bert is 11 kilometers away from Brenda. Both begin to walk toward each other at the same time. Bert walks at 4 kilometers per hour. They will meet in 2 hours. How fast is Brenda walking?

32. ## College Math II

(4 + sqrt(3)^2 = I am not sure how to follow the steps to come up with the answer. Can someone help me understand the steps. Thanks.

33. ## college

The 2.kg mass is heading toward a ramp-there’s no friction. Notice that at the top right there is a relaxed spring. The spring constant is 50 N/m. Calculate the maximum compression of the spring after the mass has risen up the ramp and hit the spring.

34. ## physics

The 2.kg mass is heading toward a ramp-there’s no friction. Notice that at the top right there is a relaxed spring. The spring constant is 50 N/m. Calculate the maximum compression of the spring after the mass has risen up the ramp and hit the spring.

35. ## For Writeacher

I saw your post this morning, for my question last night..thank you so much!! =D -MC

36. ## College Math II

Rationalize the denominator and simplify. sqrt(6)/4srqrt(3) + sqrt(2) = I cannot figure out how to do this and simplify. Can someone help me. Thanks.

37. ## College Math II

Solve by using the quadratic formula. x^2 + 6x + 6 = 0 I am having problems using the quadratic formula to get the right answer. Can someone show me the steps that I use? Thanks.

38. ## College Math II

Solve by any method. x(x + 1) = 12 I am not sure what method to use to show my work and figure out the answer. Can someone help me understand this problem. Thanks.

39. ## College Math II

Solve by any method. a^4 – 5a^2 + 4 = 0 I am having problems figuring out what method to use to solve this problem. I need to show my steps and I am not sure how to do this. Can someone help? Thanks.

40. ## College Math II

If a ball is tossed into the air from a height of 6 feet with a velocity of 32 feet per second, then its altitude at time t (in seconds) can be described by the function A(t) = - 16t^2 + 32t + 6. Find the altitude of the ball at 2 seconds. I am having

41. ## College Math II

Show a complete solution to each problem. Find the exact length of the side of a square whose diagonal is 3 feet. I am having problems understanding how you figure out this problem. Can someone help me? Thanks.

42. ## College Math II

Write a complete solution to each problem. If the length of a rectangle is 3 feet longer than the width and the diagonal I s 15 feet, then what are the length and width? I do not understand how to solve this problem. Can someone help me? Thanks.

43. ## College Math II

Solve each problem. Find the quotient and remainder when x^2 – 5x + 9 is divided by x – 3. I don't understand how to divide and solve this problem. Can someone help me understand the steps on how to do it. Thanks.

47. ## health care

Write a 350- to 700-word paper in APA format describing two approaches or indicators to measuring patient outcomes. Measuring the quality of care is essential to being able to identify which areas of patient care need improvement. A positive patient

48. ## Creative Writing

Here is my intro (that bobpursley checked yesterday), and my first body paragraph (that needs to be checked now) : What is wisdom? Is it in the stories that Grandfather told me, or is it in what I achieved from schooling? The reality is, wisdom is not

49. ## physics

A 4.0 kg particle is moving along the x axis to the left with a velocity of v= -12.0 m/s. Suddenly, between times t =0 and t = 4.0 x a net force = 3t^2 – 12t is applied to the particle, where F is in N and t is in s. Calculate the velocity of the

50. ## Geography

Which of these cities is not located about 55 degrees N latitude and has the largest population? Tbilisi, Georgia Minsk, Belarus Kiev and Odessa, Ukraine Thanks -MC

51. ## math

1 ms = ? s 1 mile second = ??? second

52. ## physics

A mass of 1.1 kg is attached to two cords. The cords are each an angle 30 degrees above and below the horizontal, The mass circles around the vertical pole at a fixed speed of 15 m/s in a circle of radius 0.50 m. How do I calculate the magnitude of the net

53. ## physics

A spring-loaded dart gun is used to shoot a dart straight up into the air, and the dart reaches a maximum height of 12 meters. If the spring is compressed only half as far the second time, how far up does the dart go this time (no friction and using

54. ## art

I have homework in art where, every week, I must look up an art definition, describe it, and draw a picture with it. I was wondering what the following words mean and/or where I could find pictures: Sfumato, Composite, Anthropomorphism, Tactile, Garish,

55. ## physics

The potential energy of a particle on the x-axis is given by U= 8xe ^-x ^2/19 where x is 1 meter and U is in Joules. Can you explain for me how to find the point on the x-axis for which the potential is a maximum or minimum and is this answer a point of

56. ## Physics

At what temperature is the rms speed of helium molecules half its value at STP (0 C}, 1.0 atm)?

57. ## english

i'm having trouble with coming up with a topic sentence about death.

58. ## algebra

parallel to line 2/3x-4=0 through (-4,-6)

What makes some companies more profitable than the others

how do i solve this thermochemical equation? and what r the steps to it 1. Find the heat of reaction for the following equation. N2(g) + 2 O2(g) -> N2O4(g) given the following steps 2NO2(g) -> N2(g)+ 2O2(g) delta H=-84.8 kj N2O4(g)-> 2NO2(g) delta H= 72.8

61. ## Finance

I need some help with an assignment that I am working on for Introduction to Finance class.

95. ## critical thinking

Select a topic of interest and explain how you would come up with a reliable sample for obtaining peoples’ opinions.

96. ## physics

A small particle of mass 2.0 x 10^-19 kg is attached to a string of relaxed length 0.50 nm .The string is the black horizontal line attached to a an immovable wall on the left. The plot is a graph of the force needed to stretch the string by pulling to the

97. ## communications

Does anybody know what an eletronic version of a print ad is? I have an idea, but I am not sure if I am correct

98. ## physics

A 2000 kg space probe is moving rightward in empty space along the x axis at 12 m/s. One of the probe’s rockets is fired providing a thrust of 1800j N along the y axis. The rocket fires for 1.5 s. How can I derive the equation for the trajectory of the

99. ## physics

A 2kg mass is released from rest and slides down an inclined plane of 60 degrees a distance of 1 eter. It strikes a 250 N/m spring. What is the maximum compression of a spring?

100. ## English(literature)

What citations from the Catcher in the Rye show Holden Caulfield has sympathy toward the less fortunate?

101. ## physics

A string is hanging from the rearview mirror of you car and a ball is at the end of this string. Suppose that your drive around a circular track at fixed speed. Which list below gives all the forces that act on the ball? A) tension and the force of gravity

103. ## physics

In order to move a heavy object you must push against it with a larger force than it pushes on you. Is this true or false?

104. ## physics

An object in the vacuum of space orbits the earth at a fixed speed in a circular orbit several hundred miles above the earth. What can we conclude about the reaction force? a) That there is no reaction force-the net force on the object is zero, so the

105. ## AP Chemistry

Will a non-volatile solute always lower the vapor pressure of the pure solvent in solution? Why or why not?

106. ## Physics

We study water of 1.0 g/cm3 density in an open container with its surface exposed to the atmosphere. If we measure the pressure first at a depth d and find the value p1, and then at twice that depth to find p2, the two results are related in this form: a)

107. ## Physics

A 9000 kg boxcar traveling at 17.0 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 6.5 m/s. What is the mass of the second car?

108. ## Social Studies

who got the nobel peace prize before barack obama

109. ## math

Find the nth term of the geometric sequence whose initial term is 7 and common ration is 7. (your answer must be a function of n)

110. ## physics

Two vehicles with the same mass collide and lock together traveling 28 m/s at 37 degrees north of east after the collision. How fast was the car traveling that was heading north while the other vehicle was traveling east?

111. ## physics

Is it true or false that when a baseball player hits a home room, the baseball received a greater impulse from the bat than the bat did from the ball?

112. ## math

Find the nth term of the geometric sequence whose initial term is 7 and common ration is 7.(Your answer must be a function of n.)

113. ## physics

If a mass attached to the center of a vertical circle swings around at a fixed speed (v) and gravity pulls straight downward, would the tensions in the rope attached to the mass be different at the top of the circle, straight down to bottom of circle, and

114. ## Chemistry

Given that the solubility of sodium chloride is 36 grams per 100 grams of water. Which of the following solutions would be considered supersaturated? A. dissolve 5.8 moles of NaCl in 1 L of water B. dissolve 1.85 moles of NaCl in 300 ml of water C.

115. ## physics

How can I calculate the tension in the two cords that are labeled A and B in a two mass system? Cord A is on top with a 1 kg mass attached and Cord B connects this mass to a 2 kg mass. The two mass system accelerates directly upward at 2m/s^2.

116. ## college

Environmental Factors Contribute to Juvenile Crime and Violence. Delbert S. Elliott. Opposing Viewpoints: Juvenile Crime. Ed. A.E. Sadler. San Diego: Greenhaven Press, 1997. My paper is asking for the title and citation. Would I include all of the above?

117. ## Physics

A tow truck is pulling a car out of a ditch by means of a steel cable that is 10.2 m long and has a radius of 0.50 cm. When the car just begins to move, the tension in the cable is 870 N. How much has the cable stretched? COnstant for Steel cable Y=2.0e11

118. ## Calculus

[Integrals] h(x)= -4 to sin(x) (cos(t^5)+t)dt h'(x)=?

119. ## stats

Ok, so in a game of Texas Hold 'Em you have two hearts in your hand. The next two cards places are both hearts, but the third one is a spade. What are the odds that by the end of the round you will have a Flush (5 of same suit). I've asked someone else and

120. ## English

Can you please check the grammar in the sentence thank you. Another Country begins with Rufus walking the streets of Seventh Avenue, hungry, broke, and having nowhere to go until he makes his way to a jazz bar.

121. ## physics

Is it true or false that momentum is conserved when total mechanical energy is conserved?

122. ## American National Government

Why is the judicial branch a non-parisan body? I know that the judicial branch has independent power but that is really all that I know. Could someone please help me? Thanks.

123. ## geometry

if QR=3x and RS=x+12, then x=?

124. ## science

how is Dna copied?

125. ## science

compare and contrast mitosis and cell divison

126. ## Anatomy and Physiology I

the blood-brain barrier is effective against, what

127. ## Dividing Rational Expressions

x^3-8/x^2-4 divided by (x^2+2x+4)/(x^3+8). This becomes ((x-2)(x^2+2x+4)/(x+2)(x-2) times ((x+2)(x^2-2x+4))/(x^2+2x+4). I understand that (x-2)(x^2+2x+4)=(x^3-8) when I distribute it, however, if I didn't have the help of my book, I'd have no clue how to

128. ## math

HELP PLEASE!!! ESPECIALLY PART 2 2. The following questions do not require the data above. Answer with the data given in each question. i. There is a total of approximately 12.4 billion acres of agricultural land (cropland, rangeland, irrigated land) on

129. ## physics

A ball is thrown up in the air with an initial speed of V. If the air exerts a constant frictional force F on the ball, show that H = (V^2) / 2(g+F/m)

130. ## corrections

response describing a sociological aspect of prison life. This may include the subculture of prisons,including violence, sex, gangs, death, and language, or the social organization of prison, such as demograhics, relationships, social groups, social

131. ## Physic

31m/s is a typical highway speed for a car. At what temperature do the molecules of nitrogen gas have an rms speed of 31 m/s? (Answer in K)

132. ## Physic

7.7 mol of helium are in a 16 {\rm L} cylinder. The pressure gauge on the cylinder reads 65psi. What are (a) the temperature of the gas in Celsius and (b) the average kinetic energy of a helium atom?

133. ## math

?/8 = 15/? = 24/32

134. ## medical terminology

according to the article reduce abbreviation errors do you think enough steps have been taken to reduce errors explain why you agree or disagree

135. ## Maths

Differentiate y=(5x-2)^3(3-x)^6 using the product rule. i don't get the step where they find the common factor could you help me by doing it step by step please ? thank you!

144. ## math

Roberto ate 3 pieces of a pizza and them felt that he should pay 1/4 of the cost because that's the fraction he ate. How many pieces was the pizza cut into? Please could you explain me the problem and you give me the answer? thank you