Saturday
July 26, 2014

Posts by Erika


Total # Posts: 330

Biology 30
In what size populations might you expect it to be relatively common for alleles to become fixed? Why? I think that larger populations would be more likely to have fixed alleles, since perfect Hardy-Weinberg equilibrium states that there will be no change in allele frequency i...

HELP!
Next year (sophomore year) I'm taking the following courses: Honors Algebra II/Trig Spanish III Health AP Biology Honors English AP World History Is AP Bio and world history hard? or no it's not just the exam. Please tell me because this is my first year taking AP.

statistics
a. with replacement? b. without replacement?

statistics
if 2 out of 100 second graders are randomly selected, find the probability that they are both boys and like spring. boys/spring 39

math
a storage room measures 11.35 feet in length by 9.5 feet in width by 8.3 feet in height. it contains a box which is 4.25 feet in length 6.5 feet in width and 4.0 feet in height.how many cubic feet of storage space are left in the room rounded to the nearest cubic foot

Chemistry
How would you start and finish these questions by a step by step process? Does Amp equal to Joules? 1. How many grams of aluminum can be produced by the electrolysis of aqueous aluminum chloride by a current of 5.00 amps for 5.00 hours? 2. Consider the following electrochemica...

Statistics
idk

math
Jorge sees that there are small and large squares in the tile design belo.how many squares are there in all in the design?

science
- Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in r...

Geology
Pleistocene mammoth bone from La Brea Tar Pits of Los Angeles, California. Age: 12,200 ± 35 years

Biology 20
I'm using chromatography to identify compounds in a leaf extract for a lab, and one of the evaluation questions is 'Suggest a step that could be added to the procedure to isolate a specific compound for chemical testing.' What step could I use?

college chem
a compound containing

math
1;2; 3; 4

math
Jon makes a bar graph that shows the number of dogs owned by members of his class. if the smallest number is 1 and the largest number is 4; what interval should Jon use?

science
a child is pushing a shopping cart at a speed of 1.5 m/s. how long will it take this child to push the cart down the aisle with a lenght of 9.3m?

French
But now the problem is that another word doesn't fit in...g_ _ _ e In the sentence Avant de partir en voyage, on consulte toujours un g_ _ _ e touristique?

French
Thank you so much! I completely overlooked that vocabulary word in my textbook!

French
I'm doing a French crossword puzzle, and I'm stuck on one of the words. It's a four letter word like: _a_d And it fits in the sentence: Le train part de la____ de Lyon. Could someone help me out? Thanks!

French
How do you translate: "May I ask some questions?" into French with correct grammar?

French
Oh, it makes sense now! Thank you very much!

French
Oh, I translated wrong, my apologies. So then, how would I answer this? I'm unsure of what it is asking.

French
What is the translation of "Comment s'appelle ce terrain de camping"? I know that the literal translation is, "How do you call camping"? but that makes no sense to me.

French
Thank you, Ms. Sue :)

French
What is the English translation of: Que veut dire VTT?

Indefinite Integrals
find the indefinite integral of (1/x)*(e^(-2log[ 3,x])) dx where 3 is base of the log i cannot even figure out where to start :( please help. thank you

Derivatives
Find f'(x): (abs(((x^2)*((3x+2) ^(1/3)))/((2x-3)^3)) So I thought I should split it into two parts: A and B. A) (x^2)/((2x-3)^2) B) ((3x+2)^(1/3))/(2x-3) My plan was to differentiate each part and then multiply them together, since multiplying their denominators together g...

Integrals- Log/Ln
I'm still getting it wrong, so I'm not sure what's with that.. Thank you for your help though!

Integrals- Log/Ln
Can you check this please i'm not sure why it's wrong .__. 1) indefinite integral of 1/t *ln(t) dt the t*ln(t) is altogether on the bottom i got ln(ln(x)) + C 2) find the indefinite integral of 1/(sqrt(t)*[1-2*sqrt(t)]dt sqrt(x) is on the bottom. i got -ln(1-2*sqrt(t))...

French
Hello! Could someone please read this report on my trip to Paris, and correct it? Thank you! Mon voyage en France était très amusant! Nous allé à Paris. Nous regardé l’églises, monté Le Tour Eiffel, et prendre plus des phot...

French
Ahh, thank you so much! it makes sense now! MErci!

French
Just a quick question... how do you do futur proche in French?

Math
It takes pipe A 14 days to fill the fish pond. It takes pipe B 18 days to fill the same pond. Find out how pond it takes both pipes working together to fill the pond

physics
A group of hikers hears an echo 2.50 s after shouting. If the temperature is 20.0°C, how far away is the mountain that reflected the sound wave?

Physics
The range of human hearing extends from approximately 20 Hz to 20,000 Hz. Find the wavelengths of these extremes at a temperature of 26°C. -Find wavelengths fron 20 hz: -Find wavelengths for 20,000 hz:

physics
A sound wave has a frequency of 686 Hz in air and a wavelength of 0.50 m. What is the temperature of the air? -Find wavelengths for 20 hz: -Find wavelengths for 20,000hz:

Physics
A sound wave has a frequency of 686 Hz in air and a wavelength of 0.50 m. What is the temperature of the air?

math
Two different relationships are shown below. Relationship 1: xy = 3 Relationship 2: A graph is shown that has the following points plotted: one comma three, two comma six, three comma nine, four comma twelve. a) Identify each relationship as direct or inverse variation. b) Cal...

physics
A particle with a +5.0 µC charge and a kinetic energy of 0.090 J is fired into a uniform magnetic field of magnitude 0.30 T. If the particle moves in a circular path of radius 3.0 m, determine its mass.

chemistry
how do you convert .99grams of copper to moles using the atomiuc weight

geometry
The angle of depression from the top of a lighthouse to a boat in the water is 30°. If the lighthouse is 89 feet tall how far is the boat from the lighthouse to the nearest foot? Answers available in ... 10Take this time to do your best on this question. A) 45 feet Elimina...

Religious Studies
When did the First Crusade start & end? Like as in the exact date? I can't seem to find it in any of my information books or online!

science
what is the gravitational potential energy of an object to its weight multiplied by its what?

chemistry
HO-HO-BENZENE RING-CH=CH-NH2 WHAT IS THE NAME OF THIS COMPOUND

chemistry
figure 1 HO- ######## # # # # # # # # # # HO-# # # #-CH=CH-NH2 # # # ###### # # # ######## BENZENE RING what is the name of this compound or figure 1

chemistry@@@
Explain what the terms chiral atom and chiral molecule mean. write in three sentences.thanks

calculus
Thank you! helped a lot and yes I meant '=' , basically I think he just wants us to explain on why it did or didn't fail, yes I know very strange! :)

calculus
The ellipse x^2+3y^3=13, has two points when x+-1 . Find the slope of the ellipse at both these points. 2. Thoroughly explain the method you used to find the slope in part 1. What are the strengths and weaknesses of the method you used? 3. Explain whether your method will work...

History
Should environmental policy focus on developing more oil resources or on developing renewable energy sources? Or, is there another, better way to frame the discussion?

English
How do these examples even compare to the question I asked?

English
Should environmental policy focus on developing more oil resources or on developing renewable energy sources? Or, is there another, better way to frame the discussion?

Physics
A roller coaster is initially at a height of 40 m above the ground and has an initial velocity of 15 m/s. Using conservation of energy, find the velocity of the roller coaster at a height of 5 m above the ground.

physics
The maximum possible efficiency of a heat engine which exhaust its heat at a temperature of 46.0o is 39.0 percent. What is the minimum value of the temperature at which the engine takes in heat? (in oC).

HELP! Physics
A heat engine operates between two reservoirs at temperatures of 19.7oC and 294oC. What is the maximum efficiency possible for this engine?

Physics
Initially 1.200 mol of an ideal gas in a container occupies a volume of 3.50 l at a pressure of 3.30 atm with an internal energy U1 = 547.2 J. The gas is cooled at a constant volume until its pressure is 1.80 atm. Then it is allowed to expand at constant pressure until its vol...

Physics
A 50.0 Kg ball rolling at 10.0 m/s eastward (on a frictionless surface) collides with a 20.0 Kg ball rolling westward at 20.0 m/s. After the collision the two balls stick together (coalesce). What is the momentum after the collision?

Physics
An arrow is shot at an angle such that it's horizontal velocity is 40 m/s and it's vertical velocity is 20 m/s. Find the horizontal distance the arrow will travel before hitting the ground

Physics
An arrow is shot at an angle such that it's horizontal velocity is 40 m/s and it's vertical velocity is 20 m/s. Find the horizontal distance the arrow will travel before hitting the ground.

Physics
An object with a mass of 50 kg is being dragged along a horizontal floor by a horizontal force of 30 N. If the friction force opposing the motion is a steady 20 N, what is the acceleration of the body

CHEMISTRY
2C2H2+ 5O2-> 4CO2+ 2H20. If 1 mole of C2H2 reacts with oxygen, how many moles of C02 are produced.

Chemistry
how many moles of Cl in 2.7 mol CaCl2

Algebra
idk

physics
A heat engine has a hot reservoir of 680°C and a cold reservoir of 220°C. What is the efficiency of the engine?

computer science python
write a program that displays all the cards in a deck using one tuple for suit and one for rank.

math
what is 10000 less than 337676

science
Find the horizontal and vertical components of the velocity of a cannonball 4 seconds after being fired horizontally at 400 m/s from the edge of a tall cliff.

chemistry
3h2+n2 makes 2NH3's if I have 4 moles of H2 instead and 2 moles of N2 would I still just say I have 2.0 or 2.7?

chemistery
so grams = 4 * 39.98 ? = 159.92

chemistery
how many grams of NaOH are needed to react with two moles of H2SO4

Math
A student answered the following skill-testing question to try and win a prize: (-4)^3-(-2)^4/2^2+5^2*7^0 The students answer was 5. Did the student win the prize? I couldn’t seem to figure out how to answer this question. I got the answer -13, but my answer sheet said -4...

Science
The placement of metal and non-metal elements in the periodic table makes it possible to predict the formation of compounds. Which of the following chemical formulas indicates the formation of an ionic compound? a. KI b. ICI c. SO3 (the three is small) d. CHCL3 (the three is s...

Grade 9 Chemistry (2)
What is one way in which Noble Gases are different from other elements? a. Noble Gases have low boiling points b. Noble gases have high melting points c. Noble gases have extremely high densities d. Noble gases have unusually high atomic masses Also, what is a 'valence ene...

Religion
Well, the Passover was instituted by God. God instituted the Passover to remind the people of how He freed them from the Egyptians. The Exodus was actually the leaving of Egypt. The 10 commandments was God's word to the people, telling them how to live according to Him. He...

Science
When people buy astronomical telescopes, they have an option to buy a set of eyepieces to go with it. If Fred bought a telescope with an objective with a focal length of 2000 mm, and eyepieces with focal lengths of 40 mm, 16 mm, and 8 mm, then what magnifications will Fred exp...

integrated chemistry and physics
If 2 blocks have the same mass which one has the greater acceleration?

earth
How do Plate tectonics affect the Atmosphere, Hydrosphere, Geosphere, and Biosphere? Thanks SO much in advance!:D

Math
thank you!

Math
help please

Math
The length of a rectangle in 18 inches. What is the perimeter of the rectangle if the length is 7 incheslonger than the width?

Ela- Ms.Sue Plz!
COuld someone help me with my homework? I need to write a thesis statement for a research paper on steve job

statistics
Suppose that 2,000 scientists compute 90% confidence intervals for parameters they are interested in. How many of these intervals would we expect to successfully capture their parameters

Chemistry(Please help)
1 MIN = 60 SECONDS 1 HOUR = 60 MIN

ela <Ms.Sue>
i hope u can keep help me when i need it

ela <Ms.Sue>
i think you are an amazing teacher

ela <Ms.Sue>
what does contemplation mean?

ela <Ms.Sue>
ok thank you so much do u teach?

ela <Ms.Sue>
do u thing this quote might had inspired Asimov

ela <Ms.Sue>
so it is saying that technology is taking our expreince to life and taking away the important parts of life

ela <Ms.Sue>
People will be into technology in which in the future there will be no intereaction.

ela <Ms.Sue>
i think it is saying technoloy progress changes things . The things of now of day would be replace and the humanity whichs is us will not intreact like now.

ela <Ms.Sue>
no i dont understand humanity and essence

ela <Ms.Sue>
what does this quote from jean arp "Soon silence will have passed into legend. Man has turned his back on silence. Day after day he invents machines and devices that increase noise and distract humanity from the essence of life, contemplation, meditation" mean?

ela
Do u think this quote might have inspired asimov to write this story?

ela
So I chose this

ela
this quote goes with this story right?

ela
The quote need to relate to a story "the fun they had" by Isaac Asimov it is about 2 kids in 2157 who found a book about school now of days while they have mechanical teachers and then she thinks of the fun they used to have.

ela
What does this quote from Albert Einstein "it has become appallingly obvious that our technology has exceeded our humanity".

ela
So can I chose this quote

ela
Nevermind I don't think it relates

ela
I think yes

ela
Can u explain the whole quote

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