Saturday
February 13, 2016

Posts by jj

Total # Posts: 985

physics
This is what I found.... When the car is at the top of the track the centripetal force consists of the full weight of the car. mv2/r = mg Applying the conservation of energy between the bottom and the top of the track gives (1/2)mv^2 + mg(2r) = (1/2)mv0^2 Using both of the ...
October 8, 2010

Math
Sheila's age is two years more than twice Nicole's age. The sum of their ages is the same as Steven's age. If Steven's age is ten years less than five times Nicole's age, ,find the age of each. Write a verbal model!
October 6, 2010

english
Examples of personal interaction with a friend or family member about personal finance or credit cards. This is an emergency!!! Help please
September 24, 2010

6th grade science
Science - kk, Friday, January 2, 2015 at 2:38pm 1. a 2. d 3. a 4. a those are the correct answers i got 4/4 with them
September 17, 2010

geometry
raise pq and qr are perpendicular point s lies in the interior of angle pqr if measure of the angle pqs equals 4=7a and the measure of angle sqr = 9+4a find the measure of angle pqs and sqr
September 8, 2010

Anatomy and Physiology
Each nerve impulse begins in the dendrites of a neuron's. the impulse move rapidly toward the neuron's cell body and then down the axon until it reaches the axon tip. a nerve impulse travels along the neuron in the form of electrical and chemical signals. Acetylcholine...
July 31, 2010

Calculus
Application of Derivatives and Integrals: A sign 3 feet high is placed on a wall with its base 2 feet above the eye level of a woman attempting to read it. How far from the wall should she stand to get the best view of the sign, that is, so that the angle subtended at the ...
July 11, 2010

Calculus
A sign 3 feet high is placed on a wall with its base 2 feet above the eye level of a woman attempting to read it. How far from the wall should she stand to get the best view of the sign, that is, so that the angle subtended at the woman’s eye by the sign is a maximum?
July 11, 2010

math
Thanks for the help!
June 2, 2010

math
Solve for x= x^2 + 45= 6x
June 2, 2010

Information Science
how do I begin the project
June 1, 2010

Math
Simple interest investment made for a period of 4years to R7800 with an initial investment of R4000 for this investment
May 29, 2010

Compters and software in a bussiness
How are computers and software aplications utilized in a bussiness setting to solve bussiness problems?
May 21, 2010

Geo
For questions 33 and 34, write the equations for the lines parallel and perpendicular to the given line through the given point (one point for each equation). x - 3y = 9 through (2, -1)
May 21, 2010

intermidate alegebra
ac Method 15t^ -17t-4 ac=15*4=60 This the ac Method can you help me finished this problem
May 12, 2010

math
y X 8 = 72
May 10, 2010

english
Did you know that Paul Revere rode through the countryside calling men to arms class? where does the comma belong? how can i rewrite this sentence with a comma?
May 10, 2010

Chemistry
How do you find pKa?
May 5, 2010

algebra
-21+3z/2 divide 121z-847/4
May 4, 2010

algebra
Thank you so much!
May 3, 2010

algebra
Bob mosw his lawn in 3 hours, Jane can mow the same lawn in 5 hours. How much time would it take for them to mow the lawn together?
May 3, 2010

Pre-algebra
Factor the expression 14+21c
April 21, 2010

commas and run on sentences
You got it
April 21, 2010

Physics
a basketball player is trying to make a half-court ump shot and releases the ball at the height of the basket. assuming that the ball is launched at 51 degrees, 14 m from the basket, what speed must the player give the ball?
April 18, 2010

college
Answer the problems below and show or explain how you arrived at your final answer. 1. You sell premium toasters and are making a pricing decision. At a price of $100 (or “p = $100”) you predict that you can sell 30 of these premium toasters at your Scottsdale, ...
April 13, 2010

Algebra1
a company sells brass and steel machine parts. One shipment contain 3 brass and 10 steel parts and cost 48.00. A second shipment contain 7 brass and 4 steel parts and cost 54.00. Find the cost of each type of machine part. How much would a shipment containing 10 brass and 13 ...
April 10, 2010

math 156
Indicate whether the sequence is arithmetic, geometric or neither 10,12,22,32,42.....
April 7, 2010

calculus-limits??
i keep on doing something wrong on this problem,i guess im forgetting to add or subtract some number. use f'(x)=lim h-->0 f(x+h)-f(x)/h to find the limit: lim h-->0 sin^(3)4(x+h)-sin^(3)4x/h
March 24, 2010

math
What are the number in the magic square of 4 by 4 if the magic number is 38?
March 16, 2010

Chemistry
Christ lover, you're a life saver!!!
February 15, 2010

Art history
Can you tell me if these sculptures have open or closed contour? I can't post the link but if you search the name and the numbers it should show up. Sculpture 1: Mother and Child [1979.206.121] Sculpture 2: Virgin and Child [33.23]
February 3, 2010

Intro to art history
I have to write a paper comparing two art sculptures. I have write if it's an open or closed contour but I don't know what that means.
February 3, 2010

Accounting
What kind of companies (industries) have negative cash flow from investing activities? And what kind of companies have positive cash flow from investing activities?
January 26, 2010

chemistry
describe the general characteristics of metals, nonmetals, and metalloids.
January 24, 2010

Algebra
Thank you for your help.
January 21, 2010

Algebra
John's insurance company will replace his car if repair costs exceed 80% of the car's value. The car recently sustained $8000 worth of damage, but it was not replaced. What was the value of his car?
January 21, 2010

physics
A tin can is filled with water to a depth of 30 cm. A hole 11 cm above the bottom of the can produces a stream of water that is directed at an angle of 34° above the horizontal. (a) Find the range of this stream of water. (b) Find the maximum height of this stream of water.
January 14, 2010

physics
Water flows in a cylindrical, horizontal pipe. As the pipe widens to twice its initial diameter the pressure in the pipe changes. Calculate the change in pressure between the wide and narrow regions of the pipe. Give your answer as an expression in terms of the density of ...
January 14, 2010

ITALIAN
hello, can anyone translate this? could be a poetic-like translation. i just can't seem to make sense out of this, when i use a dictionary or an online translator. help please! thank you. "Si che morte Si che morte e lontananza Provi incor pena infinita che sol perde ...
January 8, 2010

language arts
i need help with my novel : watership down by richard adams
January 7, 2010

german
these are SO helpful. thank you so much. i will definitely check out the website. thank you
December 31, 2009

GERMAN
Wie war das in der Kindheit? 1. Als ich Kind war, ___ ich immer radfahren. will woll wolle wollte wollen 2. Als du Kind warst, ___ du nicht allein über die Straße gehen. darfte durfte darfst durftest dürftest 3. Als Monika Kind war, ___ sie nicht, daß es ...
December 30, 2009

german
Reiny, thank you. is there anyway you can tutor me/ help me online with my german? please let me know
December 30, 2009

german
Mein Mitbewohner hat alles umgestellt! Gestern waren die Musikbozen hinter (1)_____ Sofa. Aber Jurgen hat sie unter (2)____ Tisch gestellt. Das Telefon war auf (3)_____ Tisch. Aber Juergen hat es an (4)____ Wand gehaengt. Die Pflanze war in (5)_______ Ecke, aber jetzt ist sie ...
December 30, 2009

physics
A chair of weight 150 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 36.0 directed at an angle of 40.0 below the horizontal and the chair slides along the floor.Using Newton's laws, calculate , the magnitude of the ...
December 14, 2009

physics
A chair of weight 150 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 36.0 directed at an angle of 40.0 below the horizontal and the chair slides along the floor.Using Newton's laws, calculate , the magnitude of the ...
December 14, 2009

algebra
Thanks for this...I am so confused on it?!?
December 9, 2009

algebra
Thank you, but how does the x play into it,that is where I was confused at?
December 9, 2009

algebra
find the slope: x+5y=10
December 9, 2009

algebra
Thanks, I got it.
December 7, 2009

algebra
how do I do that?
December 7, 2009

algebra
a roof rise 2.7 feet vertically and 8.2 feet horizonatally. what is the grade of the roof?
December 7, 2009

algebra
Thank you!
December 7, 2009

algebra
find the slope for 8x-y=8
December 7, 2009

math
don't no
November 17, 2009

Misc.
What is the penultimate day of the year? Dec. 30th?
November 13, 2009

Math-Probability
Thank you, that helped out a lot!
November 12, 2009

Math-Probability
A deli offers its cheese sandwich with various combinations of mayonnaise, lettuce, tomatoes, pickles, and sprouts. 8 types of cheese are available. How many different cheese sandwiches are possible?
November 12, 2009

math
this fraction as an equivilent fraction in its lowest term 42 over 105
November 11, 2009

History
How did human history in North America during the period described in the Prologue differ from the events of Asia, Eurasia,
November 6, 2009

MGMT/216
What do you consider to be a source of ethics? What environmental factors contribute to ethical behavior? How are business ethics developed? Explain your answer
November 4, 2009

Epidemiology
To examine the association between high blood sugar and glaucoma, a group of 3154 people was observed for a period of 20 years in the NYC metropolitan area. The study participants were middle age epidemiologists working in the tri-state area. Participants received a free ...
November 2, 2009

Algebra
she feels sooo good around the waist can you help me
October 25, 2009

Geometry
Will any kite tessellate the plane? why or why not?
October 24, 2009

Geometry
Thanks! That makes a lot of sense!
October 20, 2009

Geometry
If rectangle ABCD has a larger area than rectangle EFGH, does it follow that ABCD must have a perimeter larger than that of EFGH? Why or why not.
October 20, 2009

math
Geometry, I will put that in the subject box next time!
October 14, 2009

math
thanks to both of you for your help!
October 14, 2009

math
Will a non-regular acute triangle tessellate the plane? How do you know?
October 14, 2009

Geometry
Will a non-regular acute triangle tessellate the plane?
October 12, 2009

Geometry
The length of a median of a triangle is 36 units. How many units from the vertex is the median?
October 7, 2009

Math
If ab U ac is a line, what is true about A, B, and C?
October 7, 2009

Physics
6.34
October 6, 2009

Math
Thanks for the site. Is this the right formula: P(-1 < z < 1) = 0.683
October 1, 2009

Math
Suppose scores on an IQ test are normally distributed. If the test has a mean of 100 and a standard deviation of 10, what is the probability that a person who takes the test will score between 90 and 110?
October 1, 2009

SOCIAL STUDIES
Thanks the summary was a great help!
September 26, 2009

SOCIAL STUDIES
Thanks for the link, however, It is very hard to understand. Do you know where I can find it in kids terms?
September 26, 2009

SOCIAL STUDIES
I am trying to understand what congress cannot do, but its confusing.
September 26, 2009

EARTH SCIENCE
No it is an oblate spheroid
September 21, 2009

EARTH SCIENCE
I need four reasons the layers of the egg compare to the earth. so I have three 1. The shell compares to the crust 2. The white compares to the Mantle 3. The yolk is the core Then they also want : describe two other ways the egg compares to the earth. Can't think of any ...
September 21, 2009

science
its a guess
September 17, 2009

Pre-Algebra
why is there those stupid spaces??????
September 15, 2009

social studies 11
what attitudes do you think contributed to support for the evacuation of japanese-canadians during world war II? Give evidence
September 11, 2009

algebra
yess
September 11, 2009

please edit
allright thanks so much!
September 11, 2009

please edit
At the age of 12 I had developed a great interest in the art of Acting. Acting has always been a passion and a part of me. What I like about acting is that you can go on a stage or in front of a camera without worrying about what people will think because chances are you'...
September 11, 2009

us history
I was working on a US History crossword worksheet titled The English Colonists Arrive. I am trying to find the answer to the sole right to trade in an area. This wksht is due tomorrow.
September 9, 2009

math
if rs=8y +4, st =4y,and rt=15y-9. find value of y. find rs, find st, find rt
August 26, 2009

math
if rs=3x+1, st=2x-2, and rt= 64. find value of x. find rs. find st.
August 26, 2009

math
find counterexample the quotient of two proper fractions is a proper fraction
August 18, 2009

Math
the number on the right of the other number is greater
August 18, 2009

Algebra
A PIECE OF TIN IS TWICE AS LONG AS IT IS WIDE. IT IS TO BE MADE INTO A BOX BY CUTTING 2 INCH SQUARES FROM EACH CORNER AND FOLDING UP THE SIDES . FIND THE DIMENSIONS OF THE PIECE OF TIN IF THE VOLUME OF THE BOX IS 320 CUBIC INCHES
June 22, 2009

business
..
May 18, 2009

Alegebra
Given the function K described by K(x)=x+16. find each following. K(0)=16 K(-13)=3 K(-14)=2 K(8)=24 K(c+17)=C+33 Please check this problem see if is right.
March 16, 2009

Math
If f(x) = 2 \ln(8 x+4\ln(x)) find f'(2)
March 15, 2009

CHEMISTRY
A titration of 15.0 cm3 of household ammonia, NH3, required 38.57 cm3 of 0.78M HCl. Calculate the molarity of the ammonia. PLEASE SHOW ME HOW TO SOLVE THIS. Thank you very much!
March 15, 2009

CHEMISTRY
Calculate the volume of 0.6M HNO3 necessary to neutralize 28.55 cm3 of 0.45M KOH. PLEASE SHOW ME STEPS SO THAT I CAN UNDERSTAND HOW TO SOLVE THIS PROBLEM. THANK YOU.
March 15, 2009

Chemistry (urgent!)
A titration of 15.0 cm3 of household ammonia, NH3, required 38.57 cm3 of 0.78M HCl. Calculate the molarity of the ammonia. Please show steps so that I may unders tand how solve this. Thank you
March 15, 2009

alegbra
Find the slope, it it exists x+7y=14 x=7y/14=2 check this problem for me please
March 6, 2009

Alegebta
Find the slope if its exists Y=-7X+3 7x-4 x=11 Is this right.
March 4, 2009

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