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September 2, 2015

Posts by Jacob


Total # Posts: 717

Physcis
Two trucks approach at the same speed and undergo an inelastic collision. Their total momentum? a. becomes zero b. remains unchanged c. doubles d. I need to know the masses of the two cars I say B.
April 12, 2009

Physics
Two rollerbladers throw a frisbie back and forth on a frictionless surface. Which does not change? a. Momentum of an individual rollerblader b. Momentum of the frisbie c. Momentum of the system consisting of the frisbie and rollerbladers throwing the ball d. Momentum of the ...
April 12, 2009

Calculus
Find the force on a hollow dome that is 1000 feet in diameter, that is a mile below the surface. HOw large can the dome be expanded and not surpass 600 billion pounds. I know the height will be 500, and i think that the intergral is 5280 to 4780 int 64,000pih, I am not sure ...
April 11, 2009

12th grade
Area of the house to be painted = A Bill pains "B" area per hour John pains "J" area per hour So, A/B = 4 hours, and A/J = 7 hours => B = A/4 and J = a/7 B and J says how much area they can paint per hour. When both of them work together, assume it takes...
April 9, 2009

Physics
wHAT DO I DO WITH THESE VALUES THEN...
April 7, 2009

Physics
A 69 kg roller blader, is on a frictionless surface at rest, he then tosses a 4.0 kg rock that has a velocity given by v=3i+4jm/s, the axes are both in the horizontal plane. Find the x component and y component of the subsequent velocity of the roller blader? I think tis is a ...
April 7, 2009

11th grade-Calculas
dD/dt = A(2pi/365)*cos [(2pi/365)*(t-80)] =0 for maximum or minimum (2pi/365)*(t-80) = n*pi/2 when n=1 gives maximum , then (t-80) = 365/4, for minimum n = 3 and t-80 = 3*365/4 (3) = dD/dt = +2/60 (4) = dD/dt = -2/60
April 5, 2009

5th grade math problem
write each number in standard form thirtytwo million,tenthousand one
March 30, 2009

CHEMISTRY
thanks i didnt really get molarity either but my question is for molality.
March 16, 2009

CHEMISTRY
i dont really understand molality. I know that it is a big concept but could someone explain it a little. the question is how would you prepare a molality solution.
March 16, 2009

history
A. putting more money into circulation. The reason I know the answer is correct is because I just took a test and got that same exact question right!!! ;)
February 22, 2009

Math
If x is a natural number then,(x+5)/5=x+1
February 20, 2009

Math
If x is a natural number, then (x +4)^2 =x +16
February 20, 2009

Math
i got 14
February 20, 2009

Algebra II
How do I evaluate log base 8 of 4?
February 15, 2009

Chem
4.5 × 10−12 m
February 9, 2009

English:writing memo
Good example
February 2, 2009

Science
I need facts about coral reefs
February 1, 2009

Poem: A Voice by Pat Mora
what does the daughter feel about her dad fear, amusment, and love or what? etc......
January 26, 2009

Poem: Hanging fire by Audre Lorde
i think she has breast canswer
January 24, 2009

crt 205
Over time, non-specialists are usually able to assimilate radically new scientific ideas, even though these ideas may seem strange when they are initially introduced. Such was the case with Newtonian physics; when Newton proposed his ideas regarding motion and gravitation in ...
January 9, 2009

Technology
For my final exam I must build a paper tower that stands at least 60+ inches. These are what I can use. -One sheet of paper (8.5x11) -Two feet of tape -Pencil -Ruler I can't seem to find the correct way to do this anywhere on the internet, so can I get some help here?
January 9, 2009

conversion
thanks but how would i show my work using dimensional analysis. like.. 11 L x ?/? = gal in that form
January 2, 2009

conversion
what is the easiest way to convert 11 liters to gallons
January 2, 2009

social studies
what is a government in which citizens rule through elected representatives?
December 17, 2008

science
because vibration causes noises and in an earthquake, there is a lot of vibraion
December 7, 2008

MATH
hmm...i need help on this problem, anyone know how to o this? (if u can, put a step-by-step solution) i would really be grateful. the coordinates of two points are A(-2,6) and B(9,3). find the coordinates of the point C on the X-axis so that AC=BC
December 7, 2008

Pigskin Geography
A game between two of the competing teams from bordering states might well be called the "Kudzu Klash". The game between which teams would deserve this title?
November 30, 2008

Science
how could you identify a pure metal if you have a balance, a graduated cylinder and a table of densities for metals?
November 18, 2008

language arts
can you please help me unscramble these words. nnreital cicnoflt reexatln ciclontf yucataid enruta
November 3, 2008

HHHHEEELLLPPP
what does abs mean
October 16, 2008

HHHHEEELLLPPP
thank you
October 16, 2008

HHHHEEELLLPPP
no it cant be the answer were suppose to have 2 answers
October 16, 2008

Algebra 1
were solving absolute value equations \can you help me out in 1 8-|3x-2|=3 i dont know if we distribute the negative or make it into -1 or its a no value something like that theirs no possible answer
October 16, 2008

7th grade
Jasmine's quarters total $2.80 more than her nickels, of which she has half as many as she has dimes, which total 80 cents more than her quarters.
October 14, 2008

science
what is velocity
October 6, 2008

Social Studies
Caused the isrealites to leave Canaan and go to egypt
October 2, 2008

accounting
Eric Sherm began working as a part-time waiter on April 1st, 2008 at Yard restuarant. The cash tips of 475 that he received during April were reported on form 4070, which he submitted to his employer on May 1st. During May, he was paid wages of 630.00 by the restuarant. ...
September 22, 2008

Math
ITS 88
September 22, 2008

Math
Find the equation of the straight line joining a)(4, 4) and ( 2, 0) b)(3, -1), (5, 4) i also need to know how you went about solving this problem so i can understand.. many thanks
September 22, 2008

Math - Factors
i need help
September 10, 2008

Math - Factors
What are improper factors? How do we find improper factors for any given numbers?
September 10, 2008

math
2+45
September 9, 2008

algebra
suppose h i equals the number of points lindsey scored in the ieth basketball game so far this season, and h1=14, h2=12, h3=18, h4=14, h5=18, h6=19, h8=16 which expression represents the mean number of points scored per game. a)7 E hi i=1/7 b)8 E hi i=1/8 c) 1 E hi i=8/8 d) 8 ...
September 8, 2008

science
what does technological development have to do with the development of time zones
August 21, 2008

Science
Name a tool that you can use to measure the volume of an object.
August 20, 2008

computer education
false, has to be connected to the internet
August 20, 2008

Science
Name a tool that you can use to measure the circumference of an object.
August 20, 2008

science
Name a tool that is used to measure the circumference of an object and Name a tool that you can use to measure the volume of an object.
August 20, 2008

science
why is the electron the part of the atom that moves when an electric current flows?
May 23, 2008

Math
no
May 15, 2008

Computer Science
I have defined a microscopic verson of scheme that utilizes amb. I am currently using Dr. Scheme. This is my definition: (define (amb-eval s environment succeed fail) (cond ((not (pair? s)) (succeed (cond ((eq? s '#t) '#t) ((eq? s '()) '()) ((eq? s '#f) &#...
May 15, 2008

trig
Find all angles of a right triangle RST given that r = 18cm and s=20 cm
April 8, 2008

trig
If a triangle has angles 35 and 65 degrees, what is the measurment of the third angle? Is it a right triangle?
April 8, 2008

science
at what speed did a plane fly if it traveled 1760 meters in 8 seconds
April 8, 2008

math
I do not see how Reiny went from: cosx(2sin^2x-1)/sinx TO (cosx/sinx)(-cos2x) if you break it up you get (cosx/sinx)((2sin^2x-1)/sinx) help im doing a take home exam lol
April 4, 2008

science
What is a maerial that was recently alive?
March 12, 2008

Stoichiometry
How much iron (II) sulfide would be needed to prepare 15L of hydrogen sulfide? My balanced equation is 2HCl + FeS --> H2S + FeCl2. I have converted 15L H2S to mols, but I have no idea where to go from here.
February 24, 2008

Science
what evidence would you look for in a chemical change
February 23, 2008

math
5 plus 5/10
February 16, 2008

Algebra1
ok thank you for all of your help
January 29, 2008

Algebra1
564t=744(t-.5) 564t=744t-372 564t-564t=744t-372-564t 0=180t-372 0+372=180t-372+372 372=180t 372/180=180t/180 2.07=t Is that correct?
January 29, 2008

Algebra1
no the second one left a half an hour later sorry i forgot to include that
January 29, 2008

Algebra1
A jet leaves the airport traveling at an average rate of 564km/h. Another jet leaves the same airport traveling at a rate of 744km/h in the same direction. How long will it take for the second jet to reach the first jet
January 29, 2008

Math
what is 3(x-4)-2(8-x
January 17, 2008

Math
Wha are the roots of x to the second power divided by x minus six equals Zero?
January 13, 2008

science
I have to come up with a question that i can turn in to a experiment need help please
January 6, 2008

Math
i have a question with my algebra hw about (7Xto the6*ytothe9)to the4/3xtothe 10*y to the 4
December 17, 2007

geography
Thank you Ms Sue.
November 28, 2007

geography
Thank you Ms. Sue. You really helped me.
November 28, 2007

geography
sammy goes out to play. his mother tells him to be home by 5:00. Sammy is almost an hour late, but he has an excuse. He says that he got lost. He tells his mother that when he checked his compass, it was pointing west,so he followed a path in that direction,but stillhad ...
November 28, 2007

Physics
Thank you very much.
November 28, 2007

Physics
A student throws a ball vertically upward such that it travels 9.0 m to its maximum height. If the ball is caught at the initial height 2.4s after being thrown, what is the ball's average speed? I know average speed is change in distance over change in time, but I don'...
November 28, 2007

English
Am I missing any important punctuation in this sentence: Scientists and doctors alike have only come up with one sound conclusion to date: based on what they’ve seen yet, the Ram is a creature which will no doubt affect the environment it lives in greatly, and it will not...
November 22, 2007

English (Need help rephrasing)
Thank you very much! It conveys exactly what I was trying to say.
November 18, 2007

English (Need help rephrasing)
Can you please help me rephrase this? I have completed over 150 volunteer hours at {name} Hospital. Delivering and filing medical transcriptions is one of my favorite jobs. Through this work, I was able to explore every part of the hospital while having the responsibility of ...
November 18, 2007

history
what is one aspect of brazilian life that reflects a mix of cultures?
November 15, 2007

Physics
What are some examples of the principles of mechanics in car crashes and car safety? I can only think of one, friction reducing the traction of the tires. Can you help me come up with two or three more examples? Thank you.
November 13, 2007

CHEMISTRY
What would be the uncertainty in velocity (miles/hr) of a neutron beam particle if the position can be measured within +/- 25 angstroms. The rest mass of a neutron = 1.67493 X 10^-27 kg or 1.008664904(14) amu. I know you have to use the heisenberg uncertainty principle: (...
November 7, 2007

Math
What web sites to go to to find information about integers
November 6, 2007

Math
i ment what is a number that divied by 3 has a remainder of 2 also that same number divided by 4 has a remainder 3 and that same number divided by 5 has a remainder of 4
November 4, 2007

Math
what is a number that divied by 3 has a remainder of 2 also that smae number divided by 4 has a remainder 3 and that same number divided by 5 has a remainder of 4
November 4, 2007

English (very simple)
What are some phrases similar to "Case in point"? Thank you very much.
October 20, 2007

math
How do you find the median?
October 9, 2007

mult.
66,059
October 8, 2007

mult.
what is: 9,436 x 7 ------
October 8, 2007

science
you're very welcome!!!!!
October 8, 2007

science
waves crush shells and stones to create sand
October 8, 2007

Math
thank you very much Ms.Sue!!!!!!!!
October 8, 2007

Math
A rectangle has a width if 10 inches and an area of 5 square inches. What is the length of the rectangle?
October 8, 2007

6th Grade Statistics
The student is correct because the median is used to find the middle numeric value of a data set, the mean balances out the data so all numbers in a data set are the same. This means that the mean and median can only be used for a numeric data, so this student is correct.
October 2, 2007

6th Grade Statistics
One student says you can only use the mode to describe categorical data, but you can use the mode, median, and mean to describe numerical data. Is the student correct? Why?
October 2, 2007

Calculus
Thank you very much, drwls. I actually understand it now! (You saved me in Calculus!) :-)
September 30, 2007

Calculus
My teacher showed our class how to find the graph of a derivative using tangent lines. I can not figure this out. I would really appreciate it if someone could help me or explain it to me. Thank you very much for your help.
September 30, 2007

Calculus
That's what I was looking for. Thank you very much.
September 16, 2007

Calculus
I'm not sure how to calculate limits from graphs. I've tried many times but I can't figure it out. Are there any sites or tips you can give me? Thank you very much, I really appreciate it.
September 16, 2007

Art and History
Can anyone please help me design a memorial for three civil rights workers? Creativity is very important to me. The civil rights workers are: James Chaney, Michael Schwerner, Andrew Goodman. A little background info: James Chaney, Michael Schwerner, Andrew Goodman were civil ...
May 19, 2007

History
For a history project, I need to make a memorial for James Chaney, Michael Schwerner, Andrew Goodman. It needs to be extremely creative, yet I can't think of anything. A little background info: James Chaney, Michael Schwerner, Andrew Goodman were civil rights workers who ...
May 16, 2007

math (final trig problem)
Solve for x on the interval [0,π/2): cos^3(2x) + 3cos^2(2x) + 3cos(2x) = 4 I havent done trig for a while so what exactly does that mean in solving for x on that interval and how would i go about doing that? Where are you getting these tough trig questions?? how about ...
April 30, 2007

math (more trig)
how could you do this problem? tinyurl 39jlf9 (sorry i cant get it to post because it is an internet address i cant seem to figure it out and it seems like there is not enough information or maybe i didnt pay attention in class i was able to get the one side that you can get ...
April 30, 2007

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