Tuesday
October 21, 2014

Posts by lizzy


Total # Posts: 168

physics
A cannonball of mass 3.67 kg is shot from a cannon at an angle of 39.51° relative to the horizontal and with an initial speed of 56.41 m/s. As the cannonball reaches the highest point of its trajectory, what is the gain in its potential energy relative to the point from ...
February 20, 2011

math
how to find the mean for reading 3 hours in 5 days
February 8, 2011

Math
Harry went to collect eggs from four chicken coops. At the first coop he collected the eggs and put them in the basket.at the next coop,he doubled what he had.At the third coop, he collected 6 more but dropped and broke two on his way to the fourth coop. At the fourth coop, he...
January 23, 2011

physics/chem
what is the relationship between density and specific heat capacity? and why? i thought when density increase specific heat increase but it says that it is inversely proportional. thank you
December 1, 2010

Precalculus
how would you solve this equation? please help! (x/2)LOG 7 = LOG 5 - xLOG 5
November 15, 2010

4th grade math
589
October 29, 2010

physics
Two blocks of masses m1 and m2 approach each other on a horizontal table with the same constant speed, v0, as measured by a laboratory observer. The blocks undergo a perfectly elastic collision, and it is observed that m1 stops but m2 moves opposite its original motion with ...
October 5, 2010

algebra
I have no idea how to do this problem. Find the product: z squared plus 7z-8 z sqaured-8z ------------------- X __________ z squared-64 z-1
October 2, 2010

Math
a grocery clerk nstacks three rows of can of fruit for a display, each of the top two rows has 2 fewer cans than the row beneath it, there are 30 cans altogether, how many cans are in each row?
September 21, 2010

Geometry
31 x 5
September 21, 2010

Math
How do I write an equation or an inequality for this: the product of a number z and 12 is 60
September 21, 2010

history
what factors most influenced colonial development and why?
September 9, 2010

Math
A donkey and a mule were carrying sacks of apples. The donkey groaned so the mule said to him: "Why are you complaining? If you gave me one sack, I would have twice as many as you; if I gave you one of my sacks, then we would have equal loads." How many sacks was ...
September 5, 2010

chemistry
Why will the pH of pure water at 25 degree celcius be equal to 7.0 ?
April 11, 2010

chemistry
Why will the pH of pure water at 25 degree celcius be equal to 7.0 ?
April 11, 2010

chemistry
Why will the pH of pure water at 25 degree celcius be equal to 7.0 ?
April 11, 2010

physics
What is a capacitor used for in a current other than just collecting energy?
February 6, 2010

science
Ugh. I dont know, I have this question for a science exam revieww! HELPPP.
January 5, 2010

Phys
The masses and coordinates of three spheres are as follows: 18 kg, x = 1.50 m, y = 1.50 m; 40 kg, x = -1.50 m, y = -1.50 m; 64 kg, x = 0.00 m, y= -0.25 m. What is the magnitude of the gravitational force on a 14 kg sphere located at the origin due to the other spheres?
November 15, 2009

math
Me and my mom are having an agrument about how to solve this problem. 27 / (5+4) * 19= she says the answer is 57 and I say the answer is 6 with a remainder of 9..can you please tell me who is right. Thank you.
October 21, 2009

english
I need help labeling complements in my sentences. I am not sure if I am doing this correctly or not. Could you please check to see if I have the following parts of speech labeled correctly? I must identify the subject, verb and complements. I must determinit if the complement ...
September 6, 2009

physics
What is a vibration? What is the relationship between period and frequency?
August 15, 2009

English/Grammar Pronouns
Summer Assignment: Would you say Do you know who will replace Erica and _I_ next week? Which word would you put in place if I is the wrong pronoun? me or myself, maybe?
July 29, 2009

English/Grammar
I have an English 10 Summer Assignment about grammar and such. One of the questions is: In the following sentence, which words are verbs? Melissa was worried about her job interview. a. was, worried b. worried c. worried, about I know that it's not c., and I don't ...
July 29, 2009

anatomy
What is the kcalorie value of a meal supplying 110g of carbs, 25g of protein, 20g of fat, and 5g of alcohol? Please help show work
April 21, 2009

college, Microeconomics
Yes those are the answers I got too! I just wanted to see if I was right.. Thanks
April 13, 2009

college, Microeconomics
(Daddy Warbucks employs workers in his perfectly competitive factory. Mr. Smith employs workers in his monopolistic factory as the only producer of the thing you really want. Given the following information, determine how many workers each firm will employ: The weekly salary ...
April 13, 2009

chemistry
Chemical reaction formulas of: 1.)Fe + H2SO4 2.)FeS + H2SO4 3.)CS2 + S
February 22, 2009

chemistry
What happens if you heat jic and iron together? what happens if you heat jic and iron sulphide together/
February 8, 2009

algebra with pizzazzi
Do Elephants know how to gamble
December 5, 2008

AP Chem
what is the hybridization of ClF3? and BrF3
November 4, 2008

Chemistry
The question makes no sense to me either and I have ask the teacher to clarify what it is he is asking. The DMSP stands for dimethylsulfoniopropionate. Marine algae produce this product.
October 28, 2008

Chemistry
What is the approximate depth integrated particulate DMSP quantity (in micromolar m-2) to 30 m? The DMSP at 30 m is approximately 11 nM.
October 28, 2008

Biology A
Charged molecules pass through the cell membrane through _______________.
October 23, 2008

Biology A
opps i meant an amoeba
October 23, 2008

Biology A
The process in which am amoeba engulfs its pray and takes it in is known as _________.
October 23, 2008

Biology A
In a ______________ __________________ the concentration of the solutes outside and inside the cell are equal.
October 23, 2008

science
In 1960 physicist Theodore Maiman constructed the first working laser.This design was improved upon Bell Telephone Laboratories in 1961.Since then lasers has been found to have a wide variety of applications.Identify one application of laser technology and explain how this ...
October 12, 2008

math
How can I solve this problem. A restaurant has 7 booths and 20 table. Write tth ratio of booths to tables as a fraction. Responses
September 24, 2008

history
How many words can you make with the letters from the word Constitution?
September 17, 2008

chemistry
5x10^-6mol N/L * 10^4 L 5x10^-2 mol N
September 9, 2008

chemistry
i forgot to include that there is 10^4 L of water. i have tried to work it out and came up with 5x10^-2mol N
September 9, 2008

chemistry
if the concentration of NO3- in the water is uniformly 5 microMolar, how many moles of N are there per square meter?
September 9, 2008

English
I have to write a one-page essay for my English class. Could you correct my essay and give a feedback? Thank you. Why is Dali so popular? – 1 page Salvador Dali quickly succeeded as an artist while he was alive, unlike other painters. His surrealistic works have religious...
September 1, 2008

Critical thinking
In your environment, what everyday items are treated aesthetically? For instance, a roll of plain white toilet paper is simply functional, but one decorated with floral patterns is more aesthetic. Consider your impressions of a hotel when the toilet paper end is folded by ...
August 31, 2008

psychology - new! your thoughts
This was very hepful. Thanks!!
May 6, 2008

math
what is the derivative of the integral of cos(x^4)+t dt from -2 to sin(x)
April 29, 2008

math
how do you find the answer to (2t-1)^3 dt on the integral from x^2 to x^3
April 29, 2008

physics
0.155 kg of water at 86.0oC is poured into an insulated cup containing 0.224 kg of ice initially at 0oC. How many kg of liquid will there be when the system reaches thermal equilibrium?
April 23, 2008

physics
A physicist, upon awaking one morning to find his stove out of order, decides to boil the water for his wife's coffee by shaking it in a thermos flask. Suppose that he uses 520 cm3 of tap water at 56oF, that the water falls 1.35 ft each shake, and that the physicist ...
April 23, 2008

physics
In a certain experiment, it is necessary to be able to move a small radioactive source at selected, extremely slow speeds. This is accomplished by fastening the source to one end of an aluminum rod and heating the central section of the rod in a controlled way. If the ...
April 23, 2008

physics
The system shown in the Figure is in equilibrium. The mass of block 1 is 2.2 kg and the mass of block 2 is 3.5 kg. String 1 makes an angle = 28o with the vertical and string 2 is exactly horizontal. what is the angle between the string that connects the masses and the string ...
April 10, 2008

physics
For the step ladder shown in the Figure, sides and are each ft long and hinged at . is a -ft long tie rod, installed halfway up the ladder. A -kg man climbs ft along the ladder. Assuming that the floor is frictionless and neglecting the weight of the ladder, find the tension ...
April 10, 2008

chemistry
How do I predict the formula for the ionic compounds when I combine? Cr(+3) and chlorate Na(+1) and carbonate K(+1) andsulfate
March 12, 2008

chemistry
How do I predict the formula for the ionic compounds when I combine? Cr(+3) and chlorate Na(+1) and carbonate K(+1) andsulfate
March 11, 2008

final problem for checking
x^3-x^2-6x greater than or equal to 0 x(x-3)(x+2)greater than or equal to 0 I figured that I have to factor first. Where do I go from here?
October 6, 2007

need an answer checked - algebra
Given a quadratic equation y = ax^2 + bx + c, (i) What is the effect of changing the value of the number c on the parabola? In other word, if two parabolas have the same coefficients a, and b, but different values for c, how will their graphs differ? My answer: If you have ...
October 6, 2007

need an answer checked - algebra
Given a quadratic equation y = ax^2 + bx + c, (i) What is the effect of changing the value of the number c on the parabola? In other word, if two parabolas have the same coefficients a, and b, but different values for c, how will their graphs differ? My answer: If you have ...
October 6, 2007

algebra function
Area of a window. A window is in the shape of a square of side s, with a semicircle of diameter s above it. Write a function that expresses the total area of the window as a function of s.
October 6, 2007

Algebra answer for checking
relation or function? x^2 = 1 + y^2 This is a function because relations cannot be an equation right?
October 5, 2007

Algebra
Find two positive real numbers that differ by 1 and have a product of 1.
October 1, 2007

SCIENCE
WHY IS THE SKY BLACK AT NIGHT?
September 6, 2007

Math
X = 200
September 6, 2007

math
1. COMBINE THE FRACTIONS ON TOP 2. COMBINE THE FRACTIONS ON BOTTOM BY COMBINE I MEAN ADD THEM TOGETHER THEN YOU WILL HAVE A FRACTION OVER A FRACTION TAKE THE BOTTOM FRACTION TURN IT UPSIDE DOWN AND MULTIPLY THE TOP FRACTION BY THE UPSIDE VERSION OF THE BOTTOM
September 6, 2007

Algebra
1. SUBTRACT 6x FROM BOTH SIDES X^2 - 6x = 0 2. NOW FACTOR OUT AN 'X' X(X - 6) = 0 3. SO X = 0 OR 6
September 6, 2007

u.s. history
what were the similarities and differences of the reform movements of the early 1800??? This site may help you find the similarities and differences. http://home.earthlink.net/~gfeldmeth/lec.reform.html This is a general overview of reform. http://www.sparknotes.com/testprep/...
May 16, 2007

Biology
What are code pieces of nucleic acids? (this is for a crossword puzzle and strangely polypeptides does not fit!) the spaces are: _ _ _ _ e _ _ _ _ _ _ What are the varients of a gene? (it's not diversity like I thought it should be) the spaces are _ i _ _ _ _ _ What are ...
March 23, 2007

math
what is an inequality? http://en.wikipedia.org/wiki/Inequality
March 19, 2007

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