# Questions Asked onMarch 27, 2007

1. ## Physics

A hollow, spherical shell with mass 2.00 kg rolls without slipping down a slope angled at 38.0 degrees. (a) Find the acceleration, the friction force, and the minimum coefficient of fricition needed to prevent slipping. You will find the moment of inertia

2. ## physics

The emf of a battery is equal to its terminal potential difference: A) under all conditions B) only when the battery is being charged C) only when a large current is in the battery D) only when there is no curent in the battery E) under no conditions my

3. ## Physics

Forces F1=7.50N and F2=5.30N are applied tangentially to a wheel with radius 0.330 m. What is the net torque on the wheel due to these two forces for an axis perpendicular to the wheel and passing through its center? It depends upon whether or not the

4. ## Physics

A woman with a mass of 50kg is standing on the rim of a large disk that is rotating at an angular velocity of .50 rev/s about an axis through its center. The disk has a mass of 110kg and a radius of 4.0m. Calculate the magnitude of the total angular

5. ## Law of cosines

A tree on a hillside casts a shadow 215 ft down the hill. If the angle of inclination of the hillside is 22 degree to the horizontal and the angle of elevation of the sun is 52 degreess, find the height of the tree. TIA sorry this is law of sines. sorry

6. ## Physics

In the old days, on a cold winter night it was common to bring a hot object to bed with you. Which would be better to keep you warm through the cold night - a 10 kg iron brick or a 10 kg jug of hot water at the same temperature? 10 kg iron brick 10 kg jug

7. ## math

The measure of an interior angle of a regular polygon is 135 degrees. Find the number of sides in the polygon. This is what I tried: 180(x-2)=135 [Interior Angle Sum Theorem] x-2=.75 x=2.75 That can't be right though. Help? Not sure about your formula.

A fisherman leaves his home port and heads in the direction N 70 degree W. He travels 30 mi and reaches Egg Island. The next day he sails N 10 degree E for 50 mi, reaching Forrest Island. a) Find the distance between the fisherman's home port and Forrest

9. ## launguage arts

What does Adhere mean?? stick to to stick to Here are some good online dictionaries you can use when you need them: http://www.answers.com http://www.onelook.com http://www.yourdictionary.com =)

10. ## inequality expresion

The cost of a long distant telephone call is \$0.36 for first minutes and \$0.21 each additional minutes or portion thereof. Write an inequality representing the number of minutes a person could talk with out exceeding \$3.00 would this be written as

11. ## physics (thanks)

in the context of the loop and junctions rules for electrical circuits a junction is: a) where a wire is connected to a resistor b) where a wire is connected to a battery c) where only two wire are joined d) where three or more wire are joined e) where a

12. ## Animal Art

1. Which of the following statements regarding the use of pastels with other mediums is true? A. Pastels should never be used for accents in a watercolor painting. B. An artist can effectively add charcoal over a pastel rendering. C. Pastel tends to deaden

13. ## math

A Ski jumper starts at point A and leaves at point B. Assume a(naught)=gsin(theta) tangent to path, where g=9.81m/s^2. Determine takeoff speed, v, if r=60m and theta=40 degrees. (Hint: You will need the chain rule.)

14. ## math

Find the slope of 0,0 3,5 please help i stink at math rise = 3 run = 5

15. ## Physics - KE/inertia

The rigid body shown in Figure 10-66 (it is a triangle with the upper mass = to M and the bottom two corners/masses equal to 2M. The bottom side length equals .70 cm with point P in the middle of the side and the other two sides equal .55 cm)consists of

16. ## calculus

A Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of the rectangle. What is the area of the largest possible Norman window with a perimeter of 33 feet? I got

17. ## Math

How do you remember all the regruping stuff love Ally pethebridge First, for your own safety, use only your first name in posting. Thanks. Remembering "regruping stuff" is accomplished by the same methods used for studying any subject. These sites might be

18. ## science

How is homeostasis maintained in the digestive system? Homeostasis is maintained by negative feedback - For example.....a thermostat controlling temperature. When the temp goes down, the thermostat senses it and turns on the heat. When it gets to hot,

19. ## Chem 12

Okay, this is a two-part question and the unit is acids and bases. Ka for NH4 is 5.6 x 10^ -10 Kb for NH3 is 1.8 x 10^ -5 1. Determine the pH of a solution prepared by adding 0.0500 mole of solid ammonium chloride to 100mL of a 0.150 molar solution of

20. ## Short translation Spanish

How would you say, 'that is just a fraction of many representations.' (an idiomatic expression yet again) Last post! Sorry and thank you so much for helping me on this oral. Thank you for using the Jiskha Homework Help Forum. "Eso es no más que una

21. ## Ecconomics

Explain the factors that limit the growth of firms. do some research, and then take a shot. There are multitudes of factors that limit the growth of firms.

22. ## economics

What is goal limitation in relating to the growth of firm? sorry, i have never seen the term "goal limitation" as a reference to an economic concept or economic modeling.

23. ## safety

i need to find information on the history of the automobile and how it has impacted the world (changed the world as well) economically and socially. thank you History of the automobile: http://en.wikipedia.org/wiki/History_of_the_automobile As far as the

24. ## Computer programinng

How do I write a switch statement that displays "hello", "goodbye", and "Have a nice day"? In which language?

25. ## Chemistry

Could someone check my answers? 1. Why was 95% ethanol alcohol added when titrating aspirin in an experiment? Because it helps the aspirin dry quicker and become pure while the titration is going on. 2. Would the following mistakes cause the calculated

26. ## word expressions

2 times a number, increased by 28 is less than or equal to 6 times that number is this how i should write this 2*x+28 28 x > 7

27. ## math

Find the measure of a exterior angle and a interior angle of a polygon with x+2y sides. How do you do that?

28. ## algebra

The electricity costs of a business decreased from \$12,000 one yeart to \$10,920 the next. What is the rate of decrease? the formula i am suppose to use i believe is amount/ base= rate/100 is this way i should do it 12,000/10,920=r/100 I seem to get the

29. ## accounting- need help ASAP

Write the transaction to record employer's payroll taxes. Thank you for using the Jiskha Homework Help Forum. Although I'm not exactly sure what you need, hopefully the following link will help you: http://www.accountmate.com/am7/PR_Module.asp

30. ## Physics

The 2-cm (radius) current loop shown in the figure is changing from Î¸1 = 11 degrees to Î¸2 = 66 degrees in a magnetic field 2 T in 0.5 seconds. What is the magnitude of the induced emf to the nearest hundredth of a millivolt? The wire in Problem 2 has

31. ## Germany and China

I have to find out how people in Germany AND China get their drivers license..as it what process do they have to go through Thanks Thank you for using the Jiskha Homework Help Forum. The first links will be about Germany. If you have an American license,

32. ## Genetics Biology

Please if anyone could help me with a few suggestions about how to answer this question. A mutation produces a change to produce the dominant gene for continued lactase production throughout adult life. This occurs very frequently and is present in almost

33. ## Physics

A cord is wrapped around the rim of a wheel .250 m in radius, and a steady pull of 40.0 N is exerted on the cord. The wheel is mounted on frictionless bearings on a horizontal shaft through its center. The moment of inertia of the wheel about this shaft is

34. ## government

Suppose major officeholders from a particular party are not performing well, and the part is not monitoring these officeholders. In what ways could this situation affect the party as a whole? my answer is that it could be affected by the party not taking

35. ## safety

I have to find out was sort of specific impact on the economics of Germany and China has automobile accidents had. And the number of individuals killed and injured, property damage, etc. How does the United Nations see the outcome of the automobile

36. ## Traffic Safety

I have to find the top 5 reasons that causes traffic accidents on this website NHTSA.gov but I can't seem to find it anywhere thanks NHTSA is past of the Department of Transportation (DOT). The correct web address is NHTSA.dot.gov. I found this aite more

37. ## math

3/4x-2/5y=2 1/2x-3/5y=-2 im having trouble re aranging the y and the x values and im saposed to be sovling it with either substition or elimination Try this: Double the last equation to get x = -4 + (6/5) y Then substitute that x into the first equation

38. ## English

Can you please put this into iambic penatmeter: It is the end of time as we know it The end of four years is coming very near It is time to look at my yearbook a bit, It's the yearbook of my past times, so dear Iambic pentameter sounds something like this:

39. ## word unscramble

xhfzhgzhoita Check the spelling. I found no matches.

40. ## math,algebra,correction

the direction say to calculate to approximate radical(22) to the nearest hundredth. Using the calculator. so i get this: 4.6904157 so if i round to the nearest hundredth would it then be4.69 only how do you write and equation for this condition: center

41. ## Physics

The Spinning Figure Skater. The outstretched hands and arms of a figure skater preparing for a spin can be considered a slender rod pivoting about an axis through its center . When his hands and arms are brought in and wrapped around his body to execute

42. ## Calculating distance(law of cosines)

Observers P and Q are located on the side of a hill that is inclined 32 degrees to the horizontal as shown(picture given). The observer at P determines the angle of elevation to a hot air balloon to be 62 degrees. At the same instant the observer at Q

43. ## Math

A survey on 25 people on how they got news resulted in the following data. M

44. ## Math

) Find the a) mean, b) median, c) mode, and d) midrange, for the given set of data.

45. ## Calculus

Given f and g are differentiable functions and f(a)=-4, g(a)=c, g(c)=10, f(c)=15 f'(a)=8, g'(a)=b, g'(c)=5, f'(c)=6 If h(x)=f(g(x)). find h'(a)? i'm not really sure how to get the answer. g'(a)=b, f'(b)=? How do i go about doing this. My reasoning must be

46. ## Calc AB

What is the area of the region in the first quadrant enclosed by the graph of y=e^(x^2/4) and the line y=0.5? When I graphed the two functions they don't even connect so the answer would be infinity. What am I doing wrong> Integrate y=e^(x^2/4) from x=0 to

47. ## Chemistry

if the pressure was increased in this reaction : 2NO(g)+ O2 =====> 2NO2

48. ## Math

If a rule is (3x,y) and a scale factor of 4 is used to transform it , what will the new rule be??? Show work

49. ## math

Hank Kerchief went to the sale, bought a cd at 30% off and received a \$6.00 discount. What was the original price of the cd??? Show work The \$6 discount WAS the 30% reduction off the original price, P. Solve this equation for P: (1 - 0.30) P = 6

50. ## math

Find the equivalent measure. 45 feet=___________yards show work I suggest looking up the conversion factor between the two and working from there

51. ## Math

Use each function rule. Find y for x = 1,2,3, and 4 Question y = 2x you multiply all the x numbers by 2 and that will give you your number for variable y =)

52. ## Math

Below are the grades of 50 students on a marketing test.

53. ## social studies

how did the war with mexico lead to conflict between the north and the south? Texas was pro-slavery. http://www.pinzler.com/ushistory/timeline5.html

54. ## Math

A survey on 25 people on how they got news resulted in the following data. M

55. ## Chem

if the pressure was increased in this reaction : 2NO(g)+ O2 =====> 2NO2

56. ## Math

The objective of statistics is best described as: A) To make inferences about a sample based on information we get from a population B) To use population mean, ƒÝ as an estimate of the sample mean, C) To make inferences about a population based on

57. ## Science

How does friction affect the mechanical advantage of a machine? It lowers it

58. ## math

If a rule is (3x,y) and a scale factor of 4 is used to transform it , what will the new rule be??? Show work 12x, 4y?

59. ## Science

Name a compound machine and tell what simple machine it contains? pencil sharpiner wedge and wheel and axle

60. ## help math

Find the equivalent measure. 45 feet=___________yards show work Isn't there three feet in a yard. So multlply by 1yard/3feet. so its 3

61. ## Sciene

The question is list ten habitats in the picture and the picture is a running water commujnity and the animals are limpet, bivalve, water louse, caddis fly lava, crayfish, flatworm, shrimp, snail and dragon fly.

62. ## Math

Construct a histogram and a frequency polygon for the following frequency distribution Miles

63. ## science

You move a 300N object 2 meters in 3 seconds. a. How much work do you do? b. What is your power?

64. ## Math

A governor would like to find out how people in his state feel about state subsidized public art. How might a cluster sample be selected? I searched Google under the key words "cluster sampling" to get these possible sources:

65. ## social studies

world war 2: what happened to the Desert Fox, Erwin Rommel's men as a result of Operation Torch? http://en.wikipedia.org/wiki/Erwin_Rommel

66. ## Science

Who discovered/named the first case of melanoma and when was it? http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11149783&dopt=Abstract

67. ## math

find slope 5,-2 -7,4 i think its 6 over 11

68. ## Physics

If you wish to warm 120 kg of water by 16°C for your bath, how much heat is required? ((The heat capacity of liquid water is 4186 J/(kg·oC) ) Q = M C *(delta T) delta T = 16 C (it means "change in temperature) M = 120 kg C = 4186 J/(kg·oC Multiply it

69. ## ENGLISH

a lyrics that is best describe patroclus character in the novel of iliad. another lyrics that is best describe andromache in the novel of iliad

Problem: x/4 - 4/x = 0 Directions:Solve the rational expression. x = -4 x = 4

71. ## Physics - KE

In Figure 11-32 (which shows a ball at the top of an incline, at the bottom of the incline a loop begins with radius R and Q a point on the loop lined up with the center of the loop), a solid brass ball of mass m and radius r will roll without slipping

Directions:Solve the rational expression. Problem: 1/(x+3)+1/(x-3)=1/(x^2-9) get (x+3), (x-3), and (x^2-9) to the same denominator...

73. ## science

A gear with 30 teeth turns a gear with 5 teeth. How many turns will the driven gear turn for every turn the drive gear makes? Is this type of gear train usedto increase force or speed and distance? The tumber of teeth engaged is the same for both gears,

74. ## math

If a rule is (3x,y) and a scale factor of 4 is used to transform it , what will the new rule be??? Show work

75. ## math

There are 3 feet per yard. Do the division and what do you get? ?? Find the equivalent measure. 45 feet=___________yards show work 15

76. ## math

what is the slope of-6,3 -2,-9 help -6,3 -2,-9 I take these are coordinates. Gradient of a line is given by: (y2-y1)/(x2-x1) so y2=3, y1=-9 x2=-6, x1=-2 substitute in to the above and calculate the gradient.

77. ## ENGLISH (LANGUAGE ARTS)

REcognizing Antecedents http://grammar.ccc.commnet.edu/grammar/pronouns.htm http://owl.english.purdue.edu/handouts/grammar/g_pronuse.html And others: http://www.google.com/search?hl=en&q=recognize+antecedent+grammar =)

78. ## Social Studies

Does anyone know a website in which you can view Americas favorite pets? I need it ASAP, please. You could try this: Go to http://www.google.com and click on Images. Type in america's favorite pets and see what happens. Dogs and cats will come out on top,

79. ## Writing lesson plans

I have to prepare a lesson plan on a health unit "What Makes Our Bodies Grow" for a class size of 15 kindergarteners. Any ideas would be welcome. Does anyone know of websites that can help? Thanks! you could go to the library and maybe get some kid book

80. ## govenment

1)In what ways does the existence of minor parties also work to strengthen the United States' two-party system? 2)What does the fact that aliens generally are not allowed to vote show about American beliefs? It shows that Americans believe that no one

81. ## social studies

does anybody know a good web site to get info on Samual Adams go to wikipedia and type him in WLCM :) why did hamitlon fee; it was so important to pay back the national debt what is the answer for a rule by the people is called

82. ## us history

what is a political party? please respond me A political party is a political organization that seeks to attain political power within a government, usually by participating in electoral campaigns thank you for your answer

what is some things about ancient egyptian art and culture THNX :) I went to Google and searched for ancient egypt art culture and here are the results:

84. ## math

Jose rode his trail bike for 10 miles. Two-thirds of the distance was over a mountain trail. How long is the mountain trail? what answer did you get 6 2/3 minles 6 2/3 miles

also need things about egyptian education Use the same method I gave you in your first question. =)

86. ## calculus

what is the property that distinguishes finite sets from infinite sets (give examples of each to accompany explaination). finite sets are countable. Infinite sets are not. so what would be an example of an infinite set? one that never ends? yes.

87. ## Ap European History

Discuss the characteristics and consequences of imperialism in the late 1800s and early 1900s. In your essay explain the various motives for imperialism and provide and example of each. also analyze the positive and negetive effects of imperialism on

88. ## Chem

At 58.8 degrees C and at a total pressure of 1.00 atm the mole percent of acetone in the vapor state above a solution of acetone and water containing 70. mol % acetone is 87.5%. Assuming the solution to obey Raoult's Law, determine the vapor pressure of

89. ## Germany and China

I need to know if Germany and China both have liability insurance and what does it cover? (need references) also driving under the influence/BAC and punishment for (both countries) are selt belts required for these countries? Thank you for using the Jiskha

90. ## Chemistry

I have this awful problem due tomorrow; if anyone can help it would be much appreciated. Most introductory chemistry texts provide a formula for the freezing point depression/boiling point of elevations: delta-T(f,b)= K(f,b) * m (m = molality) In fact,

91. ## Physics - KE

In Figure 11-32 (which shows a ball at the top of an incline, at the bottom of the incline a loop begins with radius R and Q a point on the loop lined up with the center of the loop), a solid brass ball of mass m and radius r will roll without slipping

92. ## history

who is the doctor that is working on the first car that will drive in th sky Since this is not my area of expertise, I searched Google under the key words "flying car history" to get these possible sources: http://travel.howstuffworks.com/flying-car1.htm

93. ## Information MGT

How would today's business environment's be affected if we decided to get rid of all computer and information systems? Do you think it would have a serious affect on the global economy considering that mankind has been involved in various businesses much

94. ## PRECAL!

Prove: (3cosx + 4sinx)^2 + (4cosx - 3sinx)^2=5 ...this is all under the square root sign. this is what i did please check. i multipied both binomials. but i get cos square x..and sincosx ..how do i combine them..please help! In this case, after multiplying

95. ## calculus

a security camera in a bank is mounted on the wall 6.2 ft above the level of the counter and 9.4ft behind the front edge of the counter. What is the angle of depression of the camera if it is to be aimed 2 ft beyond the front edge of the counter. i

96. ## calculus

express in sinx 1 1 ---------- + -------- cscx + cotx cscx - cotx and express in cosx 1 + cot x ------- - sin^2x cscx = 1/sinx so what do i do w. that extra one on the top!?? im so confused cscx Your fractions aren't lining up. This question is also not