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October 20, 2014

Posts by Annie


Total # Posts: 646

Math
Thank you so much!
May 30, 2011

Math
A design on a balloon is 2 cm wide when the balloon holds 47 cm^3. How much must the balloon hold for the design to be 6 cm wide? I'm confused about how to solve this. Could someone please show me the steps?
May 30, 2011

alegebra
can you explain how you got there?
May 24, 2011

alegebra
(5b/2y)(-3y/10b^2)
May 24, 2011

teacher aide
C. to place special needs students in the marjority.
May 17, 2011

Limiting Reagents
Thank you :)
May 15, 2011

Limiting Reagents
in the synthesis of FeC2O4 (dot) 2H2O, which reagent would be the limiting reagent? FeSO4(NH4)2SO4 (dot) 6H2O - 2.68g. H2C2O4 (dot) 2H2O - 1.99g. I just want to know how the H2Os would effect finding the limiting reagent. As in do they change the ratio? The molecular mass? ...
May 15, 2011

Chemistry
How do you draw the lewis strusture for Cyanogen(C2N2)
May 12, 2011

Chemistry-help
The 3 results should be within ± 0.5. I have 3 results 1) 1.5 2) 0.5 3) 1.0 Does this mean the results are acceptable since the 3 values can be arranged in the following order 0.5,1.0,1.5. The smallest value 0.5 is (-0.5) of the middle value 1.0 and the largest value 1....
May 9, 2011

Physics-Please reecheck
thanks so much for the explanation- I thought it might be parallel-just wasn't sure
May 2, 2011

Physics-bobpursley Please recheck
Could you please recheck this above-because my teacher said perpendicular isn't correct
May 2, 2011

Physics-Please recheck
My teacher told me it isn't perpendicular because it is not passing through but rotating so now I'm totally confused-Could you please look at this again? Thank you
May 2, 2011

Physics-Please check
Electricity may be generated by rotating a loop of wire between the poles of a magnet. The induced current is greates when: a.Plane of loop makes an angle 45 degrees with the magnetic field b.The plane of the loop is parallel to the magnetic field c.The plane of the loop is ...
May 2, 2011

physics
Does the minimum height of a mirror required so that a man can see himself completely depend on his distance from the mirror?
April 25, 2011

English-urgent
1) This puts the integrity of the material into question. or 2) This puts the integrity of the material in question. Which is correct?
April 20, 2011

Algebra
(x+5)(x+2)=X2+7x+10
April 13, 2011

Physics
How do I find Period T(s) and Period^2 T^2 (s^2) given mass(kg) = 0.1 and Average time for ten vibrations (s) = 5.05?
April 10, 2011

Physics
Here’s how two different students approached part A. Elizabeth: Since the little brother is half as heavy as her sister, he must sit twice as far from the pivot in order to “compensate” for his lower weight—6 feet instead of 3 feet. Jill: I used the formula...
April 4, 2011

Physics
A. Suppose you had an object that you suspected had a mass of one half of one of the washer+paperclip units. (In the rest of this problem we’ll call that a “washerclip.”) Describe how you could use the balance you used in tutorial and a single washerclip to ...
April 4, 2011

chemistry
Investigating changes in colligative properties involves the measurement of a solution’s concentration in molality instead of molarity because of which of the following? the mass of the solvent does not change, but its volume does change, as temperature changes. the ...
March 28, 2011

Science
I want to thank you for all the help, I just found this sight today. I think that you and the sight are realy COOL!!!!! thanks :-)
March 9, 2011

science
Thank you. I don't know if this one is right- At the speed of 2.5m/s, how many seconnds will it take the kayak to run a 4,500 m course? what is the speed of the kayak in kilometers per hour? speed= 4,500km/2.5h*60min/1 h =270,000/2.5=108,000km/h Thank you Ms. Sue :-)
March 9, 2011

science
Ms. Sue, I want to check an answer ok? A kayak races 100m in 50s. What is its speed? This is my answer speed=100m/50s=2m/s. Thank you
March 9, 2011

science
Okay, Ms. Sue. I got this and I don't think that it is right. this is the question - I wrote the answer at the bottom. I don't think that its right. speed=4,500km/2.5h*60min/1 h=270,000/2.5=108,000km/h I think that i'm confused. Thanks
March 9, 2011

science
At the speed of 2.5 m/s, how many seconds will it take the kayak to run a 4,500 m course? What is the speed of the kayak inn kilometer per hour? I want to work it on my own, just need help with formula please thanks
March 9, 2011

Science
AWhen it is time to leave the part, the familhy could only drive at 60 km/h in the mountains. How long would it take them to travl the 270 km to their home? How fast would they need to travel to make the trip in 3h? I want to see how i write the formula and then get my answer...
March 9, 2011

physics
The drawing shows an extreme skier at bottom of a ski jump. At this point the track is circular with a radius r. Two forces act on the skier, her weight mg and the normal force FN. Which relation describes how the net force acting on her is related to her mass m and speed v ...
February 26, 2011

economics
An airline transportation consultant offers the CEO of BlueStar, a struggling new commercial airline company, the following advice concerning the airline's high operating costs in the current quarter: "You don't have enough aircraft to operate efficiently. However...
February 24, 2011

Economics
An article in BusinessWeek warned of the dangers of deflation as the collapse of numerous Asian economies was creating worries that Asia might try to "export its way out of trouble" by oversupplying everything from automobiles to semiconductors. Evidence that ...
February 24, 2011

analogies
thirty three
February 23, 2011

physics
Through the process of doing work, what allows energy to move between the external world and the system? the result of what???
February 20, 2011

math
a recipe call for 1.5 cups of mix to make 8 pancakes. John wants to make 12 pancakes and uses 2 cup of mix. Does John have the correct ratio for the recipe
February 18, 2011

English
Thank you.
February 11, 2011

English
Can someone help me analyze this poem? I don't understand the poem From a Correct Address in a Suburb of a Major City By Helen Sorrels (1908) She wears her middle age like a cowled Gown, sleeved in it, folded high At the breast Charming, proper at cocktails But the inner ...
February 11, 2011

Physics
2.5*(10^-9)%
February 1, 2011

economics
. Suppose you are a stock market analyst specializing in the stocks of theme parks, and you are examining Disneyland’s stock. The Wall Street Journal reports that tourism has slowed down in the United States. At Six Flags Magic Mountain in Valencia, California, a new ...
January 26, 2011

english
complete using a simile 1.a drunken person often walks like 2.as slow as 3.my friend can run like
January 23, 2011

biology
yesterday i posted a question about who discovered DNA and Ms Sue kindly helped me but im confused about who actually discovered DNA because there are four different names Friedrich Miescher,Rosalind Franklin,james D Watson and Francis Crick. my homework question is who ...
January 18, 2011

science
if an acid has a pH of 1.1 what is the hydrogen ion concentration of the solution expressed in scientific notation to 3 significant figures, for my answer can it be written 1 x 10^-1.1 mol dm3? or can you not use decimals in the to the power of so should i write 1.1 x 10^-1
January 17, 2011

GEOGRAPHY GCSE
please could someone help me im stuck on this question :- name three high mountain ranges in temperate latitues with valley glaciers. thankyou
January 15, 2011

English-help needed
Thanks a lot. What about the following sentences? If there is no shelf-life information from the material manufacturer,we will assign one based on our internal protocol. If there is no shelf-life information from the material's manufacturer,we will assign one based on our ...
January 8, 2011

English-help needed
I also thought that both are acceptable. However, I am confused because we usually write "The shoe manufacturer" and "The clothes manufacturer" but not "The shoe's manufacturer" or "The clothes' manufacturer". Can you help me on ...
January 8, 2011

English
We have purchased a batch of material directly from the manufacturer. 1) No discount was provided by the material manufacturer. 2) No discount was provided by the material's manufacturer. Are both sentences acceptable?
January 8, 2011

business math
An Amusement park purchased equipment from a manufacturer for a list price of $42,000.00 minus trade discounts of 30/20/15. Calculate the amount of the trade discount on the purchase.
January 6, 2011

English-help
1)Let the instrument switch on for 1 hour before analysis. 2)On the instrument for 1 hour before analysis. 3)Switch on the instrument and leave it on for 1 hour before analysis. 4)Switch on the instrument and conduct the analysis after 1 hour. 5)Turn on the instrument and ...
January 5, 2011

Physical Science
All of the following about water is true except that it: a.has a very high specific heat capacity compared to?
January 2, 2011

Physical Science
all of the following are true of the subcutaneous layer except it
January 2, 2011

English
Which sentences are correct? 1) Are you able to assist me on this matter? I would appreciate your assistance on this matter. OR 2) Are you able to assist me in this matter? I would appreciate your assistance in this matter. Thanks.
December 22, 2010

physics
I need help finding an equation for: an asteroid revolves around the sun with a mean orbital radius twice that of Earth's. Predict the period of the asteroid in Earth years. Thank you.
December 9, 2010

spanish
what does las uno voy a la clase ciencia means?
December 9, 2010

Physics-Please help
Have 2 identical cars each 1000kg at a speed of 20m/s. The yellow car is stopped by car's brakes in 25m while green car is stopped by concrete barrier in 1.2m. Drivers have same mass(70kg) Driver of yellow car is stopped by seatbelt in 0.150 sec. Compare impulse they ...
December 7, 2010

Physics
Is the average force found by F = the mass times the acceleration which is 9.8 Thank you- I'm so confused I really don't know where or what to try next Thank you
December 7, 2010

Physics
Have 2 identical cars each 1000kg at a speed of 20m/s. The yellow car is stopped by car's brakes in 25m while green car is stopped by concrete barrier in 1.2m. Drivers have same mass(70kg) Driver of yellow car is stopped by seatbelt in 0.150 sec. Compare impulse they ...
December 7, 2010

Physics
Have 2 identical cars each 1000kg at a speed of 20m/s. The yellow car is stopped by car's brakes in 25m while green car is stopped by concrete barrier in 1.2m. Drivers have same mass(70kg) Driver of yellow car is stopped by seatbelt in 0.150 sec. Compare impulse they ...
December 7, 2010

Chemistry
1. State specifically how you would make a conclusive test for an iron (III) salt. 2. Which test for iron (II) ions is conclusive. 3. Suppose you have a solution containing both an iron (II) salt and an iron (III) salt. How would you proceed to identify both Fe2+ and Fe3+ in ...
November 28, 2010

college algebra
9 − 34 − 3(2)
November 28, 2010

College Algebra
Perform the indicated operations 10 − 5[24 ÷ 6 ⋅ 2] 1
November 28, 2010

College Algebra
can someone tell me how to get a division symbol when posting problems in Algebra
November 28, 2010

College Algebra
perform the indicated operations 9-3[4-3(2)
November 28, 2010

Physics-Please check
I said number 4 so I was wrong- Thank you for explaining it and not thinking I'm a complete dope-
November 21, 2010

Physics-Please check
Which of the following confirms that gravitational mass and inertial mass are equal? I posted this about three hours ago and no one answered it so I'm hoping someone can look at my answer and direct me 1.Free-fall accleration is the same throughout the universe 2.Free fall...
November 21, 2010

Physic-Please help
Which of the following confirms that gravitational mass and inertial mass are equal? 1.Free-fall accleration is the same throughout the universe 2.Free fall acceleration is the same at all points where the gravitational field stength is the same 3.Newton's second llaw is ...
November 21, 2010

Algebra-Please check
Write y = 10^(x) as a logarithmic function Choices are log(x)10 = y log(y)x = 10 log(10)y = x log(x)y = 10 I think it is log (10)y = x
November 16, 2010

ap physics
A 22.7 kg mass attached to a spring scale rests on a smooth, horizontal surface. The spring scale, attached to the front end of a boxcar, reads T = 21.9 N when the car is in motion. If the spring scale reads zero when the car is at rest, determine the acceleration of the car, ...
November 14, 2010

Cal
How do you find dy/dx by implicit differentiation with respect to x? x^3 + y^5 = 1
November 8, 2010

Physics
A rotating wheel requires 9.00 s to rotate 29.0 revolutions. Its angular velocity at the end of the 9.00 s interval is 98.0 rad/s. What is the constant angular acceleration of the wheel in radians/second squared? (Do not assume that the wheel starts at rest.)
November 4, 2010

physics
Make sure you're putting the parenthesis in the correct place. Such as for part A, the formulas should be: a) (ball relative ground) = (Juan's speed)+ (ball relative to Juan) (13.6Cos(32.5))N + (13.6Sin(32.5))E =(7.8)N+(ball relative to Juan) ball relative to Juan= (13...
November 2, 2010

Algeblease check my answer
Thank you-I see where I made the mistake on the "j"
October 18, 2010

Algebra Please check my answer
It should have read please check-
October 18, 2010

Algeblease check my answer
Posted by Annie on Monday, October 18, 2010 at 7:20pm. Choose the equivalent expression(3h^-2j^3k)^2(hj^-5k^3)^-2 The signs that look like minuses are negative signs Answers: 3h^-6j^16K^-4 9h^-2j^5j^16k^-4 9h^-6j^-4k^-4 9h^-6j^-4k^-4 Please help I'm so lost right now-...
October 18, 2010

Math
I need to graph this equation y=(3/2)sin(3x+2ð)-3. What would the primary interval be for this problem and how would it appear on a graph?
October 18, 2010

Algebra
Choose the equivalent expression(3h^-2j^3k)^2(hj^-5k^3)^-2 The signs that look like minuses are negative signs Answers: 3h^-6j^16K^-4 9h^-2j^5j^16k^-4 9h^-6j^-4k^-4 Please help-I'm totally lost
October 18, 2010

English - help needed
Posted by annie on Wednesday, October 13, 2010 at 4:29pm. Are the following sentences semantically / gramatically correct? 1)Alert the supervisor to any defective material found. 2)Some equipment have been taken away for inspection. After inspection, ensure that all the ...
October 13, 2010

English - help needed urgently
After inspection, ensure that all equipment is accounted for using the checklist given. Is the above sentence acceptable?
October 13, 2010

English - help needed urgently
Are the following sentences semantically / gramatically correct? 1)Alert the supervisor to any defective material found. 2)Some equipment have been taken away for inspection. After inspection, ensure that all the equipment are accounted for.
October 13, 2010

English
Can you provide some examples on the use of shall versus should?
October 10, 2010

Chemistry
In reflux, water normally enters from the bottom of the condenser and exits from the top. What causes water to be able to rise to the top of the condenser? Also, I read from wikipedia website that in the case of the Allihn condenser, water enters from the top. Any idea under ...
October 9, 2010

Chemistry
In reflux, water normally enters from the bottom of the condenser and exits from the top. What causes water to be able to rise to the top of the condenser? Also, from the following website, it is stated that in the case of the Allihn condenser, water enters from the top. Any ...
October 9, 2010

English
1) Do we say "The information is correct as of 28 September 2010." or "The information is correct as at 28 September 2010."? 2) "I spoke with him yesterday." or "I spoke to him yesterday."? Someone mentioned to me that both sentences are...
October 9, 2010

Chemistry
I found the following procedure to prepare starch indicator solution on a website:- To prepare starch indicator solution, add 1 gram of starch (either corn or potato) into 10 mL of distilled water, shake well, and pour into 100 mL of boiling, distilled water. Stir thoroughly ...
October 6, 2010

Algebra
Is the answer -6? I think I got it
October 6, 2010

Algebra
How do you solve 2x^2 - 20 = 3x Thank you
October 6, 2010

Algebra
Thank you
October 6, 2010

Math help please
calculate missing dimension. square based pyramid has height 92cm and volume 5.4 m cube.
September 30, 2010

Teachers Aide/Language and other Barriers
my answer is A
September 27, 2010

Chemistry
How would you usually prepare starch indicator solution for iodine titrations? Can the solution be stored for a few months in the fridge? I noticed that sometimes the starch indicator solution in the fridge has turned cloudy, in which case we should prepare a new solution?
September 25, 2010

physic
The angular position of a point on the rim of a 45.8 cm rotating wheel is given by θ(t) = 3.6 t2 − 2.8 t +7.5, What is the instantaneous speed v of the point at time t = 6.5 s?
September 20, 2010

Chemistry problem
I refer to my earlier post on v/v versus w/w. I would be very grateful for any advice provided. For 95% ethanol purchased from manufacturer, we normally take it as 95%v/v. For 98% sulphuric acid, it seems like it is normally 98% w/w. I have also seen a potassium hydroxide 85...
September 20, 2010

Chemistry - v/v versus w/w
Thanks a lot:) So just to confirm: normally for any chemical bought from manufacturer, if it is not stated, the % usually means v/v? Seems like for conc sulphuric acid, when it is stated 97% sulphuric acid, it means 97% w/w sulphuric acid? Thank you very much. Posted by annie ...
September 20, 2010

Chemistry -repost thank you in advance
I have a bottle of 95% ethanol purchased from the manufacturer. Normally, when it is not stated, does it mean 95% w/w ethanol? I need to prepare 100ml of 40% v/v ethanol solution from 95% ethanol. Please show me the calculation steps. Thanks.
September 20, 2010

Chemistry- urgent help needed
How do I prepare 40% v/v from 95% ethanol? When we say 95% ethanol, do we usually mean 95% w/w ethanol unless otherwise stated? Please show me the calculation steps to prepare 40% v/v from 95% w/w ethanol. Thanks.
September 19, 2010

Chemisty - urgent
Hi, how do I do the calculation? Thanks
September 15, 2010

Chemisty - urgent
How do I prepare 30% v/v ethanol from 95% ethanol? Thanks.
September 15, 2010

Chemistry
Sorry,please ignore my earlier post. Light sensitive materials are sampled in a room with yellow lighting. How is it different from normal white light?
September 14, 2010

chemistry
Light sensitive materials are samples under yellow lighting. Please explain what yellow lighting means.
September 14, 2010

history
what presidents make up mt rushmore
August 26, 2010

ecology
Explain atmospheric circulation and seasonal changes in the sun's orientation to earth to explain the highly seasonal rainfall in the tropical dry forest and tropical savanna biomes.
August 9, 2010

ecology
Why does the rainy season in the tropical dry forest and tropical savanna biomes come during the warmer months?
August 9, 2010

math
Oh wow, yes. you are right. That does make perfect sense! Sometimes I read to much into a problem. Thank you for simplifying for me Mrs. Sue. :)
July 30, 2010

math
yes, but .49 does not seem realistic. I may be doing something wrong. Thanks
July 30, 2010

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