Monday
September 22, 2014

Posts by Emily


Total # Posts: 2,310

Physics
A railroad flatcar is traveling at the speed of 13.0 m/s relative to an observer standing on the ground. Someone is riding a motor scooter on the flatcar. What is the velocity(magnitude and direction)of the motor scooter relative to the flatcar if its velocity relative to the ...
July 13, 2010

Physics
A railroad flatcar is traveling at the speed of 13.0 m/s relative to an observer standing on the ground. Someone is riding a motor scooter on the flatcar. What is the velocity(magnitude and direction)of the motor scooter relative to the flatcar if its velocity relative to the ...
July 13, 2010

German
Could someone please check if this is correct German? Thanks. Wenn man nicht über einen Fernseher, ich glaube, sie sind zu verpassen. Es ist eine gute Sache in der Lage sein, den Menschen zu sprechen, denn es ist immer ein gutes Programm, dass viele Menschen mögen! ...
June 22, 2010

Biology
please help !!! were you able in all cases to determine the parent and meiotic stage of origin of the nondisjunction?
June 14, 2010

English
I need hep writing an essay about the defects of two adults in Romeo and Juliet that caused their children's disobedience. What possible characters can I do, and what main ideas should I write for each character?
June 10, 2010

English-Romeo and Juliet
How did the wedding being moved earlier a day affect Friar Laurence's plan and cause the two lovers' death? Even if the wedding wasn't moved up, Friar John would still have been quarantined by rhe plague and wouldn't have been able to deliver the message to Romeo.
June 9, 2010

math
If the measure of angle 1 is 123 degrees, find the measure of <2, <3, <4,<5, <6, <7, <8
June 7, 2010

business
anyway would be great:) im struggling with the class.
June 6, 2010

business
You work as the manager of the second largest bank in your region of the United States. The bank's top management team has asked you to present an overview of how the current economy and financial changes have impacted your business and what changes must be made as a ...
June 6, 2010

chemistry
When enough NaCl(s) is added to the compartment containing gold to make the [Cl -] , the cell potential is observed to be 0.31 V. Assume that Au3+ is reduced and assume that the reaction in the compartment containing gold is Au3+(aq) + 4Cl- (aq) ↔ AuCl4- . Calculate the ...
June 5, 2010

English
Is the "sober-suited matron" in Romeo and Juliet(Act 3,Scene 2,line 11)a metaphor? If it is, what is it being compared to?
June 3, 2010

finance
Last year Charter Corp. had sales of $300,000, operating costs of $265,000, and year-end assets of $200,000. The debt-to-total-assets ratio was 25%, the interest rate on the debt was 10%, and the firm's tax rate was 35%. The new CFO wants to see how the ROE would have been...
May 31, 2010

Climate Change
State two reasons why you would expect the climate in Nigeria(near the equator)to be warmer than the climate in Greenland(closer to the North Pole)
May 31, 2010

Physics
An image of a candle is produced by a convex lens 14 cm away. If the focal length of the lens is 7 cm, how far from the lens is the candle placed? (USe the thin lens equation) For this question, how would you know whether the image is virtual or real?(in order to know if the ...
May 27, 2010

Honors Chemistry
I didn't realize that this problem was so simple :P thanks so much!
May 25, 2010

Honors Chemistry
If the percent (mass/mass) for a solute is 20% and the mass of the solution is 300 g, what is the mass of the solute in solution?
May 25, 2010

Math Analysis
Can someone help me with this problem, please? Thanks!! "A ship leaves port and sails for 2 hours northeast and then 3 hours northwest. If the speed remains constant, what course should the ship take home?"
May 25, 2010

Math Analysis
Thank you :)
May 24, 2010

Math Analysis
Can someone check my answers please? Thank you! If tan x = 3/5, evaluate: 1) tan 2x 2) tan 3x ==> For #1, I got 15/8; for #2, I got -99/5. Are these answers correct?
May 24, 2010

English
Wha are the nouns that describe a person called? They are like a noun that describe's a person's perosnality, such as perfectionist, troublemaker, bookworm etc.
May 24, 2010

English
Is there a verb for "question someone doubtfully or suspiciously"?
May 24, 2010

english
Using the four basic plot elements from the dramatic plot (exposition, complication, climax, resolution), how would I outline the progression of the main conflict in "The Miracle Worker"?
May 23, 2010

English
I need an adjective to describe someone who does not like to take the lead, or initiative. Thanks in advance!
May 23, 2010

English
thanks!
May 23, 2010

English
Thank you!
May 23, 2010

English
I need a character trait to describe someone who does not think or plan ahead. Thanks in advance!:)
May 23, 2010

Physics
Thank you!
May 22, 2010

Physics
Subject: Light and Geometric Optics Question: Where must a light source be placed in front of a concave mirror for a) light energy to be concentrated to a single point b)the light to be reflected in a parallel beam?
May 22, 2010

Honors Chemistry
Thanks so much!! This helped a lot!! :)
May 20, 2010

Honors Chemistry
"Would it be possible to have an addition polymer synthesized from a monomer that has only single bonds? Why or why not?" ==> I know that an addition polymer can only be synthesized from a monomer that has double bonds, but my textbook did not explain why. Can ...
May 20, 2010

geometry
The measures of the angles in quadrilaterals are in the extended ratio of 3:4:5:6. What are the measures of the angles?
May 19, 2010

math
how to solve y= 3cos2x + 5 pls help me
May 18, 2010

Chemistry
I know this is supposed to be a really easy concept, but I need help with balancing redox reactions: KClO3 ==> KCl + O2 My textbook says to write the ionic equation next, which I have written like: K(+1) + ClO3(-1) ==> K(+1) + Cl(-1) + O2(-2) (the number in parentheses ...
May 17, 2010

Chemistry
An air bubble has a volume of 0.500 L at 26 Celsius. If the pressure does not change, what is the volume, in liters, at -14 Celsius? If the pressure does not change, what is the volume, in liters, at 600 k?
May 17, 2010

Math Analysis
Use the half-angle formula to find the exact value of cos(x/2) when tanx = -5/8 and x is in quadrant IV. (| is a radical) ==> I got sqrt((89 + 8sqrt(89))/178). Is this correct? I hope my answer is easy to read..
May 3, 2010

math analysis
There's a hidden trigonometric identity.... 2sinxcosx ==> 4sinxcosx = 1 2(2sinxcosx) = 1 2sin2x = 1 Then you solve for x :)
May 3, 2010

Math Analysis
Oops, yeah those were supposed to be radicals :) thanks so much!!!!
May 3, 2010

Math Analysis
Find the exact value of cos(x/2) if sin x = 3/4 and x is in quadrant II. ==> I got ã(4-ã7)/2. Is this correct?
May 3, 2010

Physics
thanks!
May 3, 2010

Physics
Which is more harmful---smaller wavelength, like gamma ray, or larger wavelength, like radio waves?
May 3, 2010

Physics
thanks!
May 2, 2010

Physics
What is a mirror ( reflective surface and back) made out of?
May 2, 2010

Phsyics
Can you explain to me how an LCD works?
May 1, 2010

Physics
Thanks you!
May 1, 2010

Physics
What gases are in a fluorescent and incandescent bulb?
May 1, 2010

Physics
How when light rays travel outward from their light source in all directions, they are not parallel to each other, but when they approach an object they are parallel to each other?
May 1, 2010

Physics
DO diffuse reflections still follow the law of reflection? (Angle of incidence equals angle of reflection)?
May 1, 2010

us history
Do you think the changes in the 1920s gave Americans more control over their lives? Explain
April 29, 2010

Physics
How do you see your reflection in a plane mirror?
April 29, 2010

Calculus
Find the absolute max of f(x)=5x-e^(5x)
April 28, 2010

Physics
Does the law of reflection only apply to mirrors or any object?
April 28, 2010

Honors Chemistry
Ohhhh I see now! Thanks so much!! :)
April 27, 2010

Honors Chemistry
That's supposed to be q = mc(delta)T
April 27, 2010

Honors Chemistry
I have two questions on my review study guide that go like this: 1) What is the equation for calculating the energy change that occurs when a substance changes state? 2) What is the equation for calculating the energy change that occurs when a substance increases in ...
April 27, 2010

Physics
A balloon appears to be yellow when seen in white light. Explain the colour it will appear in a) green light and b) magenta light. I really don't undestand the subtractive theory of light, and it applies to this question. Can you plese explain to me how to get the answer? ...
April 25, 2010

chemistry
when 5.0 g of CaCl2 is dissolved in 50 g of water, how do you get the boiling temperature of 101.5 degree c
April 22, 2010

Math
Idk . how to even do ?
April 20, 2010

Math
The Relatioship between x and y is y=5x + 18 How does the value of y change when x increses form 1 to 4? a. y increase by 15 b. y increase by 3 c. y decresases by 3 d y dercreased by 15 Help Prettty Pleassseee !
April 20, 2010

geometry
write an expression for the sum of the angle measures in a regular polygan with n sides. then wirte an expression for the measure of each angle in a regular polygan with n sides.
April 19, 2010

Chemistry
Why is it not a good idea to use an antacid routinely? (two reasons)
April 18, 2010

Chemistry
How come the charges of H*2O*2 (asterisk means subscript), which is hydrogen peroxide,don't equal? The charge of hydrogen is 2, and the charge of O is 4. For an ionic compound you can figure out the formula by the charges(when the charges of the ions add up to zero) but ...
April 17, 2010

S.S
Could you drive from Wisconsin to Michigan without crossing another state? If yes, how? If no, why not?
April 17, 2010

Social Studies
What is the name of the only colony on the South American continent?
April 17, 2010

Chemistry
If you have to write the products of the chemical reaction Fe+O*2( asterisk means subscript),how would you know the charge of Fe in the compound FeO? If the charge is 2+, then the product would be FeO, but if the charge was 3+, then the product would be Fe*2O*3. Thanks!
April 17, 2010

Chemistry
Suppose you place a kettle on the stove and boil some water.Is the steam that forms physical of chemical change?
April 16, 2010

math
what is the perimeter of a rectangle that measures 27 inches on one side and 56 inches on the other side?
April 14, 2010

business law
Please give me some insight on a law hypo...? This is the hypo: Joe received an advertising brochure from X Corp. in the mail. The brochure contained a photo of a Peach 442 computer, and above it the statement, "While supplies last. All Peach computers on sale at 25% ...
April 14, 2010

Physics
i figured it out after all - thanks
April 13, 2010

Physics
The work function for potassium is 2.24eV. If potassium metal is illuminated with light of wavelength 310 nm, find the maximum kinetic energy of the photoelectrons. I have tried everything and still keep getting the wrong answer. The speed of light is 3 × 108 and Planck...
April 13, 2010

fraction comparisons
Max did 19 situps. This is 1/7 as many as Isabel. How many situps did Isabel do?
April 12, 2010

chemistry
help me. i dont understand
April 11, 2010

chemistry
Excess florine, F2(g) reacts at 150 degrees celius with bromine, Br2(g) to give the compound BrF(n). If 423 mL of Br2 at 150 Degrees and 748mmHg produced $.20 g BrF(n), what is it? describe the bonding in the molecule, using valence bond theory.
April 8, 2010

grammer
Yesy the correct one is 3. The conjunction in that sentence is for. A conjunction links sentences together. There is always a comma before a conjunction.
April 8, 2010

geometry
y= 24
April 8, 2010

MATH
It is a well-known fact that homing pigeons fly faster over land than over water. Assume that they fly at 10 metres per second over land, and only 8 metres per second over water. A pigeon is located at the edge of a straight river bank, 500 metres wide, and must fly to its ...
April 8, 2010

geometry
If a circle has a diameter of 2 3/8 inches, then what is the length of the radius?
April 5, 2010

algebra
Find the minimum and maximum values of the objective function subject to the given constraints? Objective Function: C=4x+5y Constraints: x>=0, y>=0, x+y<=6
April 4, 2010

math
you work at a grocery store. your hourly wage is greater after 6pm than it is during the day. one week you work 20 daytime hours and 12 evening hours and earn $280. another week you work 30 daytime hours and 12 evening hours and earn a total of %276. what is your daytime rate...
April 2, 2010

math
during a recent telethon people pledged $25 or $50. twice as many people pledged $25 as $50. altogether, $18000 was pledged. how many people pledged $25?
April 2, 2010

Help me think of ideas for my essay?
My thesis statement for my synthesis essay to connect The Grapes of Wrath, The Great Gatsby and The Death of a Salesman is "It is impossible to maintain honor and also achieve success." Could anybody give me any ideas for my 3 body paragraphs I'm having trouble ...
April 1, 2010

Chemisty
calculate pH of 50.0 mL of a .100 M solution of the weak monoprotic acid HX
March 29, 2010

Chemistry
When you balance equations, do you treat polyatomic ions as one unit or treat the different elements in the ion separately? Because if you treat them as one unit, then what if the elements get separated in the products side of the equation?
March 27, 2010

Physics
i need help on this problem too
March 26, 2010

9th grade
soil dwelling insects are examples of invertabrates. explain why this statement is true and use examples of two soil dwelling insects
March 23, 2010

Civics
Are there any reliable websites that would give information and statistics on improvements that should be made to Immigration Canada?
March 21, 2010

science
I am doing a project on the Silurian time period and we need to know some organisms that were created during the time and some that went extinct. I found a bunch that were created but i didnt find any that went extinct!! Help!!
March 16, 2010

math
5 x (x + 2y) - (5x +2y) + y(2x + z) translate into a word phase.
March 12, 2010

physics
A 250. MW coal-fired power plant burns fuel with an energy density of 35.0 MJ kg-1. Water enters the temp reduction tower at 293 K and leaves at 350. K at a rate of 4200. kg s-1. 4. Calculate the energy removed by the water each second. 5. Calculate the energy produced by the ...
March 11, 2010

4gr math
6/87
March 7, 2010

4th grade math
write and solve a mixed number word problem
March 4, 2010

fractions
Claire cut some apples into eights. She ate all but 17 pieces. how many whole apples and parts of apples did she have left over?
March 3, 2010

fractions
Castor brought 6 3/4 cakes to share with 26 students. Did Castor bring enough for each student to have 1/4 of a cake? Explain your thinking and show your work
March 2, 2010

Math Analysis
From a ship off-shore, the angle of elevation of a hill is 1.1°. After the ship moves inland at 4.5 knots for 20 min, the angle of elevation is 1.4°. How high is the hill? (1 knot = 1 nautical mile = 6080 ft per hour) As I was just about to get the answer, I realized ...
March 2, 2010

4th grade
4/5682
March 1, 2010

science
I figured out the other three questions but im stuck on this one... If you digest an entire human genome with a restriction enzyme you get a blurry smear in the lane of the gel. Why?
March 1, 2010

science
What type of organism makes restriction enzymes? How did restriction enzymes evolve? How do scientists use restriction enzymes? If you digest an entire human genome with a restriction enzyme you get a blurry smear in the lane of the gel. Why? I have a quiz tomorrow on ...
March 1, 2010

6th grade
Cone u
February 24, 2010

english
"There" is defined as "at or in that place." ex. Sit over there. "They're" is a contraction of the two words "they are." ex. They're sitting on the bench. "Their" is the "possessive form of 'they'." ex...
February 23, 2010

Honors Chemistry
How does heating or boiling a substance affect its pH?
February 23, 2010

pre calc
You're correct about the numerator. You would simplify the denominator to be x(x-1). So now you have: x(x+2) ------- x(x-1) You can cancel out the x's on both the numerator and denominator, and so for your final answer you would have: (x+2) ------ (x-1) Does this make ...
February 23, 2010

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