Saturday
November 22, 2014

Posts by memo


Total # Posts: 42

calculas
Suppose that the box height is h = 2 in. and that it is constructed using 193 \text{in.}^2 of cardboard (i.e., AB = 193). Which values A and B maximize the volume?
April 7, 2014

calculus
Recall that the volume of a sphere of radius r is V(r) =4\, \pi\, r^3 /3. Find L, the linearisation of V(r) at r=50
March 25, 2014

calculus
A searchlight rotates at a rate of 3 revolutions per minute. The beam hits a wall located 7 miles away and produces a dot of light that moves horizontally along the wall. How fast (in miles per hour) is this dot moving when the angle \theta between the beam and the line ...
March 7, 2014

calculus
A hot air balloon rising vertically is tracked by an observer located 4 miles from the lift-off point. At a certain moment, the angle between the observer's line-of-sight and the horizontal is \frac{\pi}{3} , and it is changing at a rate of 0.1 rad/min. How fast is the ...
March 7, 2014

calculus
A man of height 1.5 meters walk away from a 5-meter lamppost at a speed of 1.8 m/s. Find the rate at which his shadow is increasing in length.
March 7, 2014

calculus
A conical tank has height 3 m and radius 2 m at the top. Water flows in at a rate of 1.4 \text{m}^3\text{/min}. How fast is the water level rising when it is 2.6 m?
March 7, 2014

chemistry
A crucible containing potassium chlorate has a mass is 24.426 g. The crucible is heated according to the lab procedure for this week's experiment and is found to weigh 23.202 g. Write an equation for the reaction and, assuming that all the chlorate decomposed, calculate ...
February 13, 2013

chemistry
You weigh out 1.70 g of sodium carbonate monohydrate, dissolve it in water and react it with 15.00 mL of 2.00 M HCl. Write an equation for the reaction and calculate the expected mass of carbon dioxide that will be produced.
February 13, 2013

chemistry 20 MC questions
Thanks Dr. Bob for #D this is the question given, there is no lab given!
October 22, 2012

chemistry 20 MC questions
1- The equipment needed to carry out a titration is: A) hot plate, pipet, and filter paper B) heat source, test tube, and filter paper C) heat source, pipet, and burette D) erlenmeyer flask, pipet, and burette 2- A student correctly predicted that 10.0 g of a precipitate would...
October 22, 2012

Calculus
recall that the voulme of a sphare of radius r is v(r)=(4pir^3)/3. find l, ther linearisation of v(r) at r=50. A sphare of radius 50 centimeters is covered with a layer of point of thickness 0.31 millimeters. use the linearisation of v at r=50 to estimate the volume of point ...
February 14, 2012

English (MLA format)
i posted this post in the wrong place sorry
September 26, 2011

English (MLA format)
ooh yeah and for the following do i use the same citation ? Source C: An article in the Chicago Tribune entitled “Happiness is Contagious, New Study Finds.” It was written by Judith Graham and published in the December 4th edition. No page number is listed, but it&#...
September 26, 2011

english
Hi; 4-ok so for the first you added the last name and page number 5- you added page number and the last one its basically in this form Pepin, Ronald E., ed. and trans. Scorn for the world: Bernard of Cluny's De contemptu mundi. East Lansing: Colleagues Press, 1991. Omg ...
September 26, 2011

english
#6- Toussaint-Samat, Maguelonne. The History of Food. Trans. Anthea Bell. newyork: Barnes and Noble ,2003.
September 26, 2011

english
#5 my corrected one is In her book The History of Food, Maguelonne Toussaint-Samat claims that the orange tree in California didn’t become a staple until the adventurous spirit of the Gold Rush took over in 1848.(655) i cant seem to underline the title when i post it it ...
September 26, 2011

english
Toussaint-Samat,Mageulonne."The History of Food". Newyork:Barnes,2003.Noble Books.
September 26, 2011

english
number 6 i corrected it as Toussaint-Samat,Mageulonne."The History of Food." Newyork:Barnes,2003.Noble Books. it was Toussaint-Samat, Maguelonne. The History of Food. Trans. Anthea Bell. Barnes and Noble: New York. 2003 there isn't two number 5s the original one ...
September 26, 2011

english
i didnt correct #4 yet how is it correct 4 is confusing
September 26, 2011

english
hey i corrected this i was wondering if what i did was correct and am still stuck on to of them. Each of the following exercises shows the original source, and then a student’s sentence and/or citation about that source. Each sentence and each citation has at least one ...
September 26, 2011

physics
15 m
September 25, 2011

english
but in 5 In her book The History of Food, Maguelonne Toussaint-Samat claims that the orange tree in California didn’t become a staple until the adventurous spirit of the Gold Rush took over in 1848. it should be In her book "The History of Food," Maguelonne ...
September 25, 2011

english
Orange trees were first planted by a Spanish missionary who reached the West in 1707, although they didn’t really take off as a farm crop until 1848 during the Gold Rush (Bell 665). i dont see anything incorrect in it its hard :(
September 25, 2011

english
hey i really need help in this plzzzzz Each of the following exercises shows the original source, and then a student’s sentence and/or citation about that source. Each sentence and each citation has at least one thing wrong with it (most have more than one). Correct each ...
September 25, 2011

math
a particle M oscillators (that is, moves back and forth) in a straight line along the horizontal axis. the position of M is given by: s(t) = 4 + 2 sin(2t) (1) Find the velocity (v) and acceleration (a) functions. (2) Find the initial position, initial velocity and initial ...
August 13, 2011

english
help me to ((write a letter to your year group, inviting students to become part of the team)). In the letter you need to tell them 1)for which activity you are sending a team. 2)what kind of experience or special skills are needed. 3)how members of the team will be selected. ...
June 1, 2011

physics
A novice skier, starting from rest, slides down a frictionless 31.0° incline whose vertical height is 123 m. How fast is she going when she reaches the bottom?
November 5, 2010

physics
whats the acceleration of a car traveling 402 meters in 6 seconds
October 19, 2010

physics
A projectile is shot at a 37 degree angle from the edge of a cliff h = 305 m above ground level with an initial speed of v0 = 125 m/s how much time will it take to hit the ground
October 8, 2010

home economics
what type of economic activity is predominant in the deserts of north Africa and south Asia?
January 4, 2009

science
bddhsbkkhfdjkfnfnfgl gibberish (9 letters)
March 25, 2007

science
circuit is open and electricity does not flow (10 letters)
March 25, 2007

science
flow of charges through the circuit (18 letters)
March 25, 2007

science
two paths for the charges to follow (8 letters) parallel
March 25, 2007

science
electrical flow (11 letters)
March 25, 2007

science
circuit is closed and electricity flows (8 letter word) complete
March 25, 2007

science
where the current takes an unintended path (12 letter word) short circuit
March 25, 2007

science
a dry cell or power source (7 letter word) battery?
March 25, 2007

science
charges go away from, each other (5 letter word) repel
March 25, 2007

science
a circuit that is open and electricity does not flow (a 10 letter word) incomplete
March 25, 2007

science
what metal is in the form of a form of a thread or rod Many many metals can be in that form. You might try tungsten (also called wolfram) since that metal is so ductile.
March 23, 2007

science
what is a 18 leeter word for flow of charges through the circuit electrical currents ?
March 23, 2007

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