Tuesday
February 28, 2017

# Posts by louis

Total # Posts: 148

poem
How do the differences and/or similarities between speech and poetic form affect the experience "In Memoriam"
May 8, 2011

math
find x for a triangle that has 100 degrees and 47 degrees.
April 18, 2011

Physics
Some spacecraft design uses a solar sail made of aluminized plastic. As sunlight reflects off the sail, radiation pressure drives the spacecraft outward away from the sun. a. If the sail material has a density of 600.0 kg/m3, what is the maximum thickness of the sail for which...
March 10, 2011

Chemistry
If a sample of oxygen-15 has an activity of 8000 becquerels, how many minutes will elapse before it reaches an activity of 500 becquerels?
February 24, 2011

Mathematics
The difference between the x-coordinates of two points on the parabola y^2=4ax is fixed at 2k. Find the equation that describes the position(xp, py)of the point of intersection P of the tangents at the two points. The equation is in the form yp^2=f(xp). Hence show that 4axp<...
December 18, 2010

math
You may find it simpler to rotate the curve and the line a quarter turn anti-clockwise around the origin. This gives y = x^2/4 and y = 1/2x + 2 They intersect at x = -2 and 4. Find the definite integral over the interval (-2, 4) of 1/2x + 2 - x^2/4. This gives 9 units
December 15, 2010

Chemistry
What is the pH when 25 mL of .20 M CH3COOH has been titrated with 35 mL of .10 M NaOH?
November 29, 2010

chemistry
if i have a molar concentration of acetic acid.046 mol/L how do i get the calculated molar mass of acetic acid
November 18, 2010

10+10+0+0=20
November 8, 2010

November 4, 2010

College Geology Homework
Suppose you have a sample of potassium feldspar from a rhyolite and you measure the ratio of atoms of 40Ar to 40K of 0.024 to 1, or for every 10000 atoms of 40K you find 240 atoms of 40Ar. For this problem, consider the decline of 40K from an initial value to the measured ...
October 20, 2010

calculus
Since the two tangents are mutually perpendicular and intersect on the y-axis they have gradients 1 and -1 The gradient function is y = 6x Hence x = 1/6, -1/6 So y = 1/12 both times So the coordinate of the intercept can be calculated using the equation of the tangents: Equate...
October 3, 2010

algebra with pizazz pg 40 riddle
-5-(15y-1)=2(7y-16)-y
September 26, 2010

Calculus
The absolute value of x is always positive; so is the square. So the shape will remain invariant under this transformation, and so will be its position.
September 19, 2010

Social studies
History of social studies in britain
August 11, 2010

math
REWRITE .25 AS A REDUCED FRACTION
June 6, 2010

Chemistry
what is the balanced equation of: Combination reaction: Li2O(s)+H2O(l)-->(?) I know what a combination reaction is but I don't know how to do it when it is complex like this one.
April 20, 2010

geometry
4#OUT OF 9#=ORDER? 4#OUT OF9#=ANY ORDER? EXM:1234?
April 15, 2010

write the correct abbreviation for each metric init 1)kilogram 2)meter 3)Gram 4)milliliter 5)Millimeter 6)liter 7)kilometer 8)centimeter 9)Milligram
April 4, 2010

Chemistry
Determine the mass of antimony produced when 0.46g of antimony (III) oxide reacts with carbon.... (cont.)? ....occording to the following equation Sb2O3+3C ---> 2Sb+3CO please help me im soo lost, thank you!
April 3, 2010

chemistry
How many grams of gaseous required? If 0.260 mol of solid C and 20.0 g of solid TiO2 are reacted stoichiometrically according to the balanced equation, how many grams of gaseous Cl2 are required? 3TiO2(s) + 4C(s) + 6Cl2(g) → 3TiCl4(l) + 2CO2(g) + 2CO(g)
February 17, 2010

English
Is this a good thesis statement for an essay? If not, how should it be? In To Kill a Mockingbird, the auther Harper Lee chooses the protagonist Scout to be the narraotr of her novel because she is young, innocent and the narration is written in her adult perspective.
November 22, 2009

calculus
Equilateral triangle symmetrical about the y-axis means that the two sides which are the tangents have gradients -√3 and +√3. y' = -2x So the points of contact of the tangent to the parabola are (-√3/2, 9/4) and (√3/2, 9/4). Hence we can calculate ...
September 23, 2009

Math
1 2/4 + 1/3 =
August 31, 2009

SCIENCE!!
I love u guys for this
January 28, 2009

algebra
7n + the squareroot of n =18
January 1, 2009

Maths/Physics
From what I understand of this question if you keep breaking it in half you get: 4, 8, 16, 32, 64 etc. Which is 2^n+1 I'm just not sure where to go from there...
November 18, 2008

Maths/Physics
Is it possible to share a four fingered Kit Kat equally between 5 people if you can only break any one piece in half? Prove whether it is possible or impossible.
November 18, 2008

chemistry
What is the chemical composition of ozone, carbon dioxide, salt and water
November 17, 2008

Describe any current or past news events related to wage inequality in the steel industry
June 12, 2008

economics
in general the role of board of directors is to: a) direct the day-to-day activities of the firm b) represent investor interests in management of the firm c) insure that the firm operates legally d)provide staff assistance to the CEO in strategic matters
April 30, 2008

economics
in general the role of board of directors is to: a) direct the day-to-day activities of the firm b) represent investor interests in management of the firm c) insure that the firm operates legally d)provide staff assistance to the CEO in strategic matters
April 30, 2008

economics
in the simple economics of a competitive market price increases under which condition: a) demand is constant. supply declines b) demand decreases. supply increases c) demand and supply rise concomitantly d) demand and supply decline concomitantly
April 30, 2008

Health
Carbohydrates, protains, and ____________ are the macronutrients. a) Lipids b) vitamins c) antioxidants d) minerals
April 30, 2008

Science
Air is composed of nitrogen, oxygen, argon, carbon dioxide, and other gasses. How may air be best described? a) a compound b) a mixture c) a solution d) an alloy e) an amalgam
April 30, 2008

maths-probability
Thank You
April 16, 2008

maths-probability
A family has four children. The probability of having a girl is 1/2. What is the probability of having 2 girls followed by 2 boys?
April 16, 2008

maths-probability
Thanks a lot
April 16, 2008

maths-probability
You get to throw a die. If you roll a 3, you win \$6. If you roll a 1 or a 5, you win \$3. If you roll an even number, you lose \$6. Find your expectation for this game.
April 16, 2008

Maths probability
You get to throw a die. If you roll a 3, you win \$6. If you roll a 1 or a 5, you win \$3. If you roll an even number, you lose \$6. Find your expectation for this game.
April 15, 2008

Maths probability
Numbers is a game where you bet \$1.00 on any three-digit number from 000 to 999. If your number comes up, you get \$750.00. Find the expected winnings.
April 15, 2008

math
a rectangular mural is painted on a wall. if the mural is 12ft wide and covers 86.4sqft,what is the height of the mural?
December 3, 2007

Math
I'm in gr 11 doing Trigonometry 14.2 = b ---- ---- sin38 sin 67 a = 46 --- ---- sin20 sin130 (10.7)^2 = (9.5)^2 + (12.4)^2 - 2(9.5)(12.4) cos <B I just need someone to explain this to me because I just don't get it... thank you for any help
September 23, 2007

Math
Akite is 15m up in the sky. The angle the string makes with the ground is 50 degrees. How long is the kite string?
September 4, 2007

Computer graphics
Determine the equation for a cubic spline segment passing through two end points A (0, 5) and B (10, 20), having a slope of 2 and a curvature of -0.5 at A. Equation for cubic spline is:
January 21, 2007

Math