Questions Asked on
December 8, 2007

physics
A 1200kg car is being driven up a 5.0degrees hill. The frictional force is directed opposite to the motion of the car and has a magnitude of f=524N. A force F is applied to the car by the road and propelsthe car forward. In addition to these two forces,
asked by ajo 
physics
A horizontal force of 210 N is exerted on a 2.0 kg discus as it rotates uniformlyin a horizontal circle (at arm’s length) of radius 0.90 m. Calculate the speed of the discus. is the answer 9.7
asked by joo 
Physics and movies
we are supposed to relate physics to movies, and state mistakes or errors found in the movies based on physics principles. I am trying to do Willy Wonka the 1971 version...I need help trying to prove that Violets becoming a blueberry is impossible and an
asked by Please McHelp me! 
Calculus 3
Hello, Please help!! Show that the parabola y=ax^2 has its largest curvature at its vertex and no minimum curvature. (Note: since the curvature remains the same if the curve is translated or rotated, this result is true for any parabola)
asked by JDH 
physics
The radiation curve of the sun shows that the brightest light fro the sun is yellow green. Why, then, do we see the Sun as whitish instead of yellow green?
asked by Matt 
REPOST
CAN someone please give me a good idea as how to find information for this problem: we are supposed to relate physics to movies, and state mistakes or errors found in the movies based on physics principles. I am trying to do Willy Wonka the 1971
asked by Please McHelp me! 
physics
Suppose that sunlight falls both on a pair of reading glasses and on a pair of dark sunglasses. Which pair of glasses would you expect to become warmer?
asked by Matt 
multivariable calc
Please help! Find the point where the curve r(t) = (12sint)i (12cost)j +5k is at a distance 13pi units along the curve from the point (0,12,0) in the direction opposite to the direction of increasing arc length. (Hint: ty 13pi for arc length)
asked by Chris 
science
A total solar eclipse is visable anywhere the Moon's umbra ? the earth?
asked by connie 
Physics
A block weighing 70.7 N rests on a plane inclined at 21.6° to the horizontal. The coefficient of the static and kinetic frictions are 0.23 and 0.12 respectively. What is the minimum magnitude of the force F, parallel to the plane, that will prevent the
asked by Lindsay 
science
what happens to your internal organs if you swallow acids or bases? what happens to your skin if it comes in contact with bases and acids?
asked by anonymous 
algebra
Find the slope of any line perpendicular to the line through the points (0,5) and (3,4) Write the equation of the line passing through each of the given pairs of points. Write the answer in slopeintercept form, where possible. (1,3) and (4,2)
asked by anonymous 
Math
I still do not understand how to solve the following problem. Please show stepbystep. x = Integral (0 to v) dv/(q^2v^2) where q = constant the answer is > x = 1/2q ln (q+v/qv) 1) Where 1/2q came from? 2) Where ln came from? Is there a formula for it?
asked by Anthony 
calculus
calculate Äƒ/Äx and Äƒ/Äy. ƒ(x,y) = xy² + x²y
asked by Anibal 
physics
Why will a magnet attract an ordinary nail or paper clips but not a wooden pencil?
asked by Anonymous 
Waves (Physics)
I have trouble with these 2 problems, can anyone assist me to answer them? 18) What is the speed of a periodic wave disturbance that has a frequency of 3.50 Hz and a wavelength of 0.700 m? 21) A periodic longitudinal wave that has a frequency of 20.0 Hz
asked by Wenmar 
Essay Help
I have to do an 2page essay on "Carbohydrates". I need help on outlining the essay. Anyone can give me assistance on that? Thanks.
asked by Wenmar 
sci 275
provide a brief summary differentiating conservation and preservation. do you believe that human can harvest forest resources in a environmentally friendly way/ or should national forest be left in their natural state in which resources are not used to
asked by anaya 
Calc
How do you factor 2x^2+60x120. I got 2(x^230x+60) but I need to factor it further.
asked by Britt 
Biology
The Irish survived for generations by eating potatoes as their main staple. What is the main biomolecule in potatoes that allowed them to do that and what is its primary function for the potato plant?
asked by Brittany 
math
Stan invested $5,000, part at 8% and part at 17%. If the total interest at the end of the year is $490, how much did he invest at 8%?
asked by Anonymous 
science
What kind of a dull disk does the moon appear as during a lunar eclips?
asked by connie 
mean, mediem, mode
Whay is the mean , mediem and mode in a series of number?
asked by Sabrina 
English
I have to write a final paragraph for this story.Please help! Battle of Manassas By Callie Hackett Everbody thouht that today,July 21,was going to be a wonderful day,since we were going to have a quick and easy battle,but that all changed.That morning I
asked by Callie 
Reading
I'm currently reading a novel and I want to learn how to speed read through it and still remember the info I have read. Anyone know how I can do that?
asked by Wenmar 
English Grammar
1. Ignore the words inbetween because they do not affect agreement. 2. If the two subjects are joined by ¡°and¡±, the verb will be plural in most situations except that when the joined subjects are preceded by ¡°every,¡± ¡°no,¡± or
asked by John 
reflective journal
my teacher gave us an assignment about the ff: perceptualism conceptualism behaviorism developmentalism how will i start my reflective journal??? please help me...
asked by klar maesen 
Math xint's
How do I algebraically find the xintercepts for this equation y = x^3  3x^2 + 3. I know I need to plug in y = 0 to solve for x. x^3  3x^2 + 3 = 0 But where do I go from there? I don't think I can factor, and I don't think I can use the quadratic
asked by jeff 
Research Paper
My topic was Jim Crow Laws. I have to write a 5 page research paper. ANY criticism would help. This my first one so its pobably very bad. Could you reveiew my first paragraph and my thesis statement: In 1890, a new Louisiana law required railroads to
asked by Mark 
spin of a electron
I have to know the spin of a electron and what I have in my notes has me confused. 1. If the # of neutrons and # protons of a element are odd the element has a whole spin # (1, 2, 3) examples given: 2 H 11 B 14 N 17 O 33 S 35 Cl (I think those are mass
asked by ~christina~ 
Calculus length of curve
Hican anybody show me how to do this? Find the length of the curve r(t)= (sqrt2)i + (sqrt2)j + (1t^2)k from (0,0,1) to (sqrt2, sqrt2, 0). Thank you!!!!!!!
asked by Madison 
college algebra
The graph of a power function is f(x)=kx^p, where k and p are constants. Do you expect k to be positive or negative ? Explain please.
asked by cedric benson 
English Grammar
If the subjects are joined by ¡°nor¡± or ¡°or,¡± the verb agrees with the closer subject (the last one). 1. Either you or I _____ to go there. (be) 2. Neither the prices nor the quality _____ changed. (have) (Explanation) In Sentence 1, the
asked by John 
VERBS .name of structure
I AM PLAYING TENNIS WITH MY BROTHER ON SUNDAY
asked by LEWIS 
HELP PLEASE
why is Fe2O3 = Iron III oxide and FeSO4 = Iron II Sulfate
asked by sam 
science
What shape are the images that are cast on the ground as light filters through foliage during a solar eclipse?
asked by connie 
math 162
is f(x)= x^2+2^x+1 a polynomial? Explain
asked by Steven Jackson 
Gov.
Where can I find a website to answer this question: What is a current issue between Native Americans and the federal government? Identify the legislation that you think is linked to the issue.
asked by Paul 
physics
Which has the longest wavelengthslight waves, xrays, or radio waves?
asked by Anonymous 
Cal
Find the equation of the line containing (7,11) and parallel to y=6. Find the equation of the line having xintercept of 5 and yintercept of 5. I know that y=mx+b, b=ymx, and parallel lines have the same slope
asked by Britt 
Excel
How am i to Calculate the appropriate discount using the IF function with an absolute reference to the value listed in cell I1( which is 10%) for any order with a quantity of two or more; otherwise the discount is zero. Place the calculated discount value
asked by Tiler 
Linear or nonlnear
how do i tell if my graph is linear or nonlinear...
asked by LT 
Graphing
what are outliers and influential points in graphs dealing with data
asked by LT 
math
If a guy works. For every 40 hours, he gets 2 hours of vacation days added to his vacation. So, how many days of vacation does he get if he works 1446 in total?
asked by Cilly 
english
where do we see references to camelot and the arthurian cycle in our modern world....
asked by maggie r. 
Business
Should Boeing and other companies go along with China’s terms, or should they risk losing sales by refusing to transfer technology?
asked by lee 
Geometry
Please help me! I have a proof that is very difficult
asked by Ashley 
science
MgCl2 = magnesium chloride FeCl3 = Iron chloride why is cl on one with a 2 and on the other with a 3 Thanks
asked by sam 
financial management
This si a question I have to answer and am not sure of the answer and would like to work with someone on this can i write with anyone through email so i can send my attachment without going through here for maybe another class mate to see? Discuss net
asked by alley 
Biology
What is a qood website for free high school science fair project ideas that can be done very quickly?
asked by ishka 
SOCIOLOGY
HI, WHAT IS CONFLICT THEORY?
asked by RAY 
Biology
Why does eating excess carbohydrates or proteins cause you to gain fat?
asked by Brittany 
science
In the first phase of any solar elipse what begins covering the Sun?
asked by connie 
culture
Why are some countries reluctant to have contact with other cultures? What do these countries lose by limiting contact with other cultures? What do they gain?
asked by Virginia 
science
explain how the processes of erosion, deposition, and cementation affect the rock cycle?
asked by nana 
science
What if one type of rock was missing from the rock cycle. How would the absence of this rock affect the earth's crust and other geologic formation on our planet?
asked by nana 
algebra
Rewrite into standard form (0,5), m=3/5. Write the equation of the line passing through each of the given pairs of points. Write the answer in slopeintercept form, where possible. (2,3) and (2,4)
asked by anonymous 
science
Why are Metamorphic rock important to our planet?
asked by nana 
Cal
circle x^2 +y^2 = 1. r(t) = (sint)i +(cost)j at both pi/4 and pi/2 Find velocity & acceleration Thx!
asked by Jaime 
math
Hi This is a threepart question: a. the graph y = f(x) in the xyplane has parametrization x=x, y=f(x), and vector formula r(x) = xi + f(x)j. Use this to show that if f is twicedifferentiable, then ((absvalue f''(x))/[1+((f'(x))^2]^3/2 b. use the formula
asked by Jaime 
educ3
how can i make a reflective journal for the ff: perceptualism developmental i don't find their meaning yet...
asked by stunning gurl 
math
solve for the indicated varialbe a=1/2h(B+b) solve for b
asked by keauanna 
math
someone please help please help don't understand solve each literal equation for the indicated variable. (solve for s) d=cs ______ n
asked by allen 
social studies
What is the payment of capital called?
asked by derika 
nervous system
a drawing of the process of sensory experiences that result to behavior in your nervous system???......
asked by klar maesen 
English
Can someone help me find a song or other piece of interpretive art that directly correlate to the king arthur legends?
asked by maggie r. 
math
whats 49% times 50%
asked by michael 
math
whats 49% times 80%
asked by michael 
History
How did J.!@#$%^& influence america?
asked by anon 
Math
Solve the simultaneous equation x+y=1 x squared + y squared=25
asked by Greg