# Questions Asked onJanuary 22, 2010

1. ## physics

A string is wrapped around a uniform solid cylinder of radius r. The cylinder can rotate freely about its axis. The loose end of the string is attached to a block. The block and cylinder each have mass m. Note that the positive y direction is downward and

2. ## physics

A bicycle wheel is mounted on a fixed, frictionless axle. A massless string is wound around the wheel's rim, and a constant horizontal force, F, starts pulling the string from the top of the wheel starting at time t = 0 when the wheel is not rotating.

3. ## science

An athlete throws a basketball through a hoop. The ball leaves his hands at a height of 2.5 m with a speed of 9.0 m/s. Calculate the speed of the ball when it “swishes” through the hoop. The hoop is at a height of 3.0 m and it is 5.0 m along the court

4. ## chemistry

today, i did a lab on the molar volume of hydrogen gas. in this experiment, we poured around 10 mL of hydrocholric acid into a gas collection tube with water and measured the volume of gas to be around 20.9 mL. would changing the molarity of the

there are nearly (pi) x (10^7) seconds in one year. find the percentage error in this approximation, where percentage error is defined as abs value[ (assumed value - true value)/ true value] x 100% to find the true value I did: (365 days/yr) x (24 hours/1

6. ## math

write and solve an inequalit for the following. Flix Theater has a reduced ticket price for children who are at least two years old but less than 13 years old. The same price is given to seniors who are at least 65 years old. Also model these ranges on a

7. ## Geometry

If the length of one base of a trapezoid is 5, the length of the other base is 2x + 7, and the length of the midsegment is 6x – 24, what is the value of x? Show equations and all work that leads to your answer.

8. ## Urgenttt

hello, how do i delete all the questions i published on jiskha

26. ## AED 202

Compose a 1,050- to 1,750-word explanation of the development process. o Present a comparative analysis of the two age groups you have selected. o Clearly define and describe the stages of development the two groups. o Support your visual presentation. o

27. ## chemistry

defie le chatelier's principle and the role equilibrium plays in the reduction of stress

28. ## physics

Jennifer (mass 58.0 kg) is standing at the left end of a 13.0 m long 594.0 kg cart that has frictionless wheels and rolls on a frictionless track. Initially both Jennifer and the cart are at rest. Suddenly, Jennifer starts running along the cart at a speed

29. ## Health Physics

A machine is used to either do work or to convert energy. To find the efficiency of a machine, one must compare the power input to the machine to the power output of the machine. What does thepower take into account in addition to the amount of work done

30. ## organic chemistry

in figuring the percent yield of isoborneol reduced from camphor...is the ratio 1:1, i can do the calculations if i could determine this

31. ## Chemistry

Select all cases in which the units comprising the solid are best classified as molecules. ScBr3 Fe IF H2S IF5 Kr None

32. ## math 156

describe two different ways that you could represent the number 0.80?

48. ## Geometry

The legs of an ironing board are equal in length and bisect each other at the point where they cross. What generalization about parallelograms ensures that the ironing board will always be parallel to the floor, regardless of the height of the board above

49. ## Technology

Which of the following statements is true about a plumbing system? a. The potable water system carries used water away from the building b. The potable water system carries water that is safe for drinking c. All potable water that enters a building feeds

50. ## Propagation of error and sig. figs

I'm really embarrassed to ask this! I knew how to do it before but I forgot after 2 years. I remember learning it for analytical chemistry :( So a basic problem: What is x= a+b+c? given that: a= 100.7 +/- 0.05 b= 0.61 +/- 0.005 c=226 +/- 0.5 OK. My

Would EOE"Equal Opportunity Employment" the same as Affirmative action. I believe that they are not the same and they both have a different purpose and effect. Am i correct

52. ## Biology

Need help with these two: 26. Why do plant cells contain both choroplasts and mitochondria? a. in the light, plants are photosynthetic autotrophs. In the dark, they are heterotrophs. b. if plants can't produce enough ATP to make sugars during

53. ## SHAKESPEARE

Why does Shakespeare not tell us what started the family feud?

54. ## Biology

17. Functions of the nucleus include a. directing the function of the cell b. the partial assembly of ribosomes c. storing most of the hereditary information of the cell d. all of the above D? 18. Internal membrances play important roles in protien

55. ## it210

Design a program that models the worm's behavior in the following scenario: A worm is moving toward an apple. Each time it moves, the worm cuts the distance between itself and the apple by its own body length until the worm is close enough to enter the

56. ## social stdies

the two ways that the sea influenced early greeks and thier societies.

57. ## french

in correspondance to my last post.. i was wondering.. how does one say "you know me better than that!" in french? that's wat i meant when i wrote.. Tu dois me savoir mieux que cela!

58. ## science

which gas shows the greatest difference in percent between inhaled and exhaled air?

i need help on Chemistry and i am in 7th grade i don't know how to do some problems and i would like to know how to translate statements into equation form?

60. ## algebra

how do you solve this compound inequality 5>-4x+4 or 9

61. ## chemistry

Select all cases in which the units comprising the solid are best classified as individual atoms. C5H12 C3H6(propene) KBrO3 C3H8 AgNO3 C4H8(cyclobutane) None

62. ## math

Give a verbal, visual, numerical, and graphic representation for the idea one-fourth.

63. ## Biology

Can someone please check if my answers are correct? 17. Functions of the nucleus include a. directing the function of the cell b. the partial assembly of ribosomes c. storing most of the hereditary information of the cell d. all of the above D? 18.

64. ## History

In the last decade what social movements have been noted in the United States?

65. ## algebra

how do you solve 9x+8y=11 for x and y

66. ## algebra

the width of a rectangle is 1 ft less than the length, the area is 6 ft^2, what is the length and width? thank you

67. ## Health Physics

As the muscles attatched to the diaphragm pull the diaphragm downward during respiration, what are the muscles doing?

68. ## accounting

What is this asking me to do? "Discuss the quality of the disclosures for guarantees and commitments." "Could these disclosures be improved." What should I be analyzing..as my text is not very clear on the subject? Thank you...

69. ## Stats

True or false: The distribution with the largest range necessarily has the largest standard deviation.

70. ## biology 123456789 123456789 123456789

how can nitrogenous fertilizers destroy life in streams and rivers?

71. ## English

Can you check this paragraph for me, please? 1) A few weeks ago my cousins had an incredible sequence of accidents; he wanted to make a coke for his mother but he couldn't reach the eggs and the flour that were in a very high part of his kitchen's

72. ## History

Could someone please help me with this question? What is three federal government strategies for uniting citizens and gaining citizen support for World War I Format? I keep coming up empty handed when I go to find any information. Thanks for your help.

131. ## math

If you can cut three logs in six minutes. How many minutes will it take to cut 8? 16 is not the answer.

132. ## Math

How would you explain how to do this problem in words to someone. We have to write it as a journal entry. (-22)-(-17)+5

133. ## science

I added 40 mL of NaOH 1N to rise the pH of 10g teriphitalic acid from 5.3 to 6.3, so if I adde the same 40 mL of NaOH to 12g of the same acid what is the new pH will I have?

134. ## college algebra

Describe what the graph of interval [-4,10] looks like.

135. ## english

Can you please tell me if this is correct grammar. --- The boys saw the fire trucks across the street. Also would this sentence be correct-- They did their homework everyday.

136. ## childcare

one component of a healthy diet is a high amount of A monounsaturated fats. polyunsaturated fats. C grains D sodium the answer correct is D

137. ## social studies

washington commanded the army in this war

138. ## Health Physics

As air moves into the lungs, what does the air possess?

139. ## Health Physics

When work is done by friction, in what form in energy "lost"?

140. ## math 156

give a verbal,visual,numerical,and graphic representation of the idea three-fourths?

141. ## math 156

name five problem solving strategies that are frequently used?

142. ## ph ycological

analyze your emotions using theories and concepts you have learned. Be sure to address the biological and cognitive components of emotions and moods. Which physiological (internal and expressive body changes) and cognitive (specific thoughts occurring

143. ## soc

how does healthcare view society?

144. ## algebra

how do you find the domain of the function g(x)=7/2-3x

145. ## math

can u help with a math problem please

146. ## algebra

I rent out 2/5 of my books, give 3 away, buy 9 and now have 27. How many did I start with - I know it's 35 but I can't make the formula work

147. ## math

find the exact values when : x^2+2x >= 5

148. ## math

What is original value if the total is 40 and the sale tax is 8.75%? y * 8.75 = 40 is this the setup to solve the problem?

149. ## Trig

In the equation y=4cos 6x, what does 6 represent? In general for the equation y-acosbx, what does b represent?

150. ## Biology 123456789 123456789 123456789

how can nitrogenous fertilizers destroy life in streams and rivers?

151. ## Math

(-11)(-6)/(-3)+15/(-5)-2