Sunday
August 30, 2015

Posts by ani


Total # Posts: 44

math
Let S be a region bounded by the curve y=x+cosx and the line y=x as shown in the given figure. Find the volume of the solid generated when S is rotated about the x-axis. Find the volume of the solid generated when S is rotated about the y-axis.
May 20, 2015

math
King Arthur II has problems with pronouncing the digit 3. People are afraid of presenting something which includes 3 in it. The solution found is that if any number includes 3 as a digit, the number is divided by 2. This process continues as far as the new numbers include new ...
April 26, 2015

math
Show that 8x^3 + 12x + 100logx=O(x^3).
April 26, 2015

math
A man who is 1.6 m tall is walking on the road at a constant speed of 1 m/s. There is (only) one lamp placed 3.2 m above the road. At a specific moment the man was just under the lamp. What will be the rate at which the length of his shadow will be changing after: a) 2 sec b) ...
February 22, 2015

math
A wire of length 4 m is cut in two parts and the first part is bent in the shape of a square, while the second part is bent in the shape of an equilateral triangle. For which lengths of these parts the total area enclosed by the square and the triangle is: a. minimized? b. ...
February 22, 2015

math
A man who is 1.6 m tall is walking on the road at a constant speed of 1 m/s. There is (only) one lamp placed 3.2 m above the road. At a specific moment the man was just under the lamp. What will be the rate at which the length of his shadow will be changing after: a) 2 sec b) ...
February 22, 2015

math
A truncated square pyramid (also known as a frustum) is an object obtained by cutting a square pyramid by a plane parallel to its base (as shown in the figure). For a truncated square pyramid it is known that the side length of the large base is 10 cm and the height (distance ...
February 22, 2015

math
A line with negative slope passes through the point P(5,2) and intersects the x-axis at the point A and the y-axis at the point B. a. Find the equation of the line for which the length of the segment AB is the smallest. b. Find the equation of the line for which sum of the ...
February 22, 2015

math
A trough (a place where horses and sheep drink water) has the shape of a half-cylinder with length 4 m and radius 20 cm. Water is poured into the trough at a constant rate of 300 cm3/s. At what rate (in cm/s) is the level of the water in the trough rising at the moment the ...
February 22, 2015

Chemistry
What is the (simplified) meaning of Zn(s) + 2MnO2(s) ZnO(s) + Mn2O3(s) [e° = 1.43 V]? Please answer soon, because I will not be in class too much longer and I have no internet access at home. Thank you in advance!
February 11, 2015

chemistry
Identify the independent, dependent and controlled variables: a)Does the activity of soil affect plant growth? Independent: Dependent: Controlled: b)Does getting a good night's sleep affect performance on a test? Independent: Dependent: Controlled:
January 26, 2015

italian
write a sentence using the expression "avere mal di"
October 6, 2013

english
gary waters the other plant every day
September 17, 2013

english
we plant two bean seeds in different pots.
September 17, 2013

math
thanks a lot
March 15, 2013

math
If 96% of Chinese couples have one child (which is female 50% of the time), and the remaining 4% of Chinese couples engage in sex-selective abortion until they have a male child, what is the ratio of females per 100 males among the children (to the nearest whole number)?
March 15, 2013

economics
. If 96% of Chinese couples have one child (which is female 50% of the time), and the remaining 4% of Chinese couples engage in sex-selective abortion until they have a male child, what is the ratio of females per 100 males among the children (to the nearest whole number)? ...
March 15, 2013

CHEMISTRY
yes i fond it ,, 0.551
January 13, 2013

CHEMISTRY
thanks but b>
January 13, 2013

CHEMISTRY
(a) A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 at 10 atm is 6....
January 13, 2013

chemistry
A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 1.828×10−10 m. Determine the frequency (in hz) of the interacting photon.
January 13, 2013

chemistry
0.435
January 12, 2013

chemistry
pls what about b
January 12, 2013

chemistry
(a) A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 at 10 atm is 6....
January 12, 2013

chemistry
something wrong ... cant find right amswer
January 12, 2013

chemistry
A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 1.828×10−10 m. Determine the frequency (in hz) of the interacting photon.
January 12, 2013

Chemistry
18 is not right
January 11, 2013

Chemistry
something wrong i cant got it
January 11, 2013

Chemistry
this answer also not righ
January 11, 2013

Chemistry
4.329E15 this answer is not right
January 11, 2013

chemistry
At temperatures above 930 ∘C, PbO reduces PbS to form metallic lead (Pb). The byproduct of the reaction is SO2. Calculate the amount of lead produced (in kg) when a reactor is charged with 553.0 kg of PbS and 830 kg of PbO.
January 11, 2013

chemistry
) The solubility of bismuth iodide (BiI3) in water is 5.891 x 10-3 M. Calculate the value of the solubility product. The dissolution products are Bi3+(aq) and I−(aq)
January 11, 2013

math
1)d/dx of cos4x/3-x^2(inculding quentient&chain rule) 2)sin^2x/1+cosx(same method)
November 14, 2012

maths
if sinØ=cosØ then find the value of Ø
September 17, 2012

chemistry
SrH2 + 2 H2O ==> Sr(OH)2 + 2 H2 Determine the number of grams of strontium hydroxide (Sr(OH)2) produced when 10.0 g of hydrogen gas (H2) is also produced. (Your answer must have at least 3 significant figures.)
May 1, 2012

Math
nfhewbh
March 27, 2012

math
i need the solutions of s^3+〖116∙s〗^2+3360∙s+38=0 please.
January 24, 2012

math
1.25=2.50
October 6, 2011

parts of speech
What parts of speeech in English express huour
January 31, 2011

Math
? confusing
October 5, 2010

Hospitality
Calculate the IRR and NPV of this project utilizing a 12% discount rate and a 15% cap rate. Ms. Brown was able to secure a loan for $1,540,000, and an equity investor agreed to invest the remaining $660,000 in exchange for 20% ownership in the project?
June 9, 2010

geometry
ABCD is a quadrilateral with center O. AO=8, BO=11, CO=8, and DO=11. Is ABCD a parallelogram? Explain you reasoning.
April 27, 2009

Chem help
Which of the three isomers: NOBr, OBrN, or ONBr, is the most stable? Where should I start??
November 14, 2007

Chemistry
I see where I made my mistake. Are there 12 valence electrons in C2H6?
November 14, 2007

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