Pierre
Popular questions and responses by Pierre
Calc
Gravel is being dumped from a conveyor belt at a rate of 10 ft^3/min. It forms a pile in the shape of a right circular cone whose base diameter and height are always the same. How fast is the height of the pile increasing when the pile is 23 feet high?
asked on October 28, 2010 
Math
A farmer has one square mile of land, if he divides the land into square fields that are 1/4 mile long and 1/4 mile wide how many fields will he have
asked on August 19, 2018 
Physics
An apartment has a living room whose dimensions are 2.5 m 4.8 m 5.9 m. Assume that the air in the room is composed of 79% nitrogen (N2) and 21% oxygen (O2). At a temperature of 27°C and a pressure of 1.01 105 Pa, what is the mass (in grams) of the air? g
asked on April 19, 2008 
Calc
A wire 9 meters long is cut into two pieces. One piece is bent into a square for a frame for a stained glass ornament, while the other piece is bent into a circle for a TV antenna. To reduce storage space, where should the wire be cut to minimize the total
asked on October 28, 2010 
math
two circles intersect at point T.if the small circle has a raduis of 4 and C is the center of the larger circle,then the diameter of the larger circle must be 1]4 2] 8 3] 12 4]16 5] not enough information is given
asked on November 15, 2012 
Calc
A hemisphere of radius 5 sits on a horizontal plane. A cylinder stands with its axis vertical, the center of its base at the center of the sphere, and its top circular rim touching the hemisphere. Find the radius and height of the cylinder of maximum
asked on October 28, 2010 
MINIMIZATION PROBLEM (CALC)
A wire 9 meters long is cut into two pieces. One piece is bent into a square for a frame for a stained glass ornament, while the other piece is bent into a circle for a TV antenna. To reduce storage space, where should the wire be cut to minimize the total
asked on October 30, 2010 
math
on a drive through allegheny county,natalie drove due west for 9 miles,then turned left and proceeded to drive due south.after traveling 12 miles south,what was the straight 12 miles line distance between where natalie startd and where she ended her drive?
asked on November 15, 2012 
MINIMIZATION PROBLEM (CALC)
A wire 9 meters long is cut into two pieces. One piece is bent into a square for a frame for a stained glass ornament, while the other piece is bent into a circle for a TV antenna. To reduce storage space, where should the wire be cut to minimize the total
asked on October 30, 2010 
Physics
A 1.5kg block starts to slide up a 25 degrees incline with an initial speed of 3m/s.It stopes after sliding 0.4m and slides back down.Assuming the friction force impeding its motion to be constant. 1).How large is the friction force? 2)What is the blocks
asked on February 10, 2019 
history
Different labor systems predominated in various regions of British America. How did the economy of each region help determine its labor system?
asked on August 25, 2010 
Chemistry
how many grams of potassium bromide could be recovered by evaporating 650 grams of 15 perentKBr solution to dryness...... 650 * (.15) = 97.5
asked on October 25, 2010 
Calc
At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 16 knots and ship B is sailing north at 15 knots. How fast (in knots) is the distance between the ships changing at 7 PM? (Note: 1 knot is a speed of 1 nautical mile per
asked on October 28, 2010 
Chemistry
how many grams of potassium bromide could be recovered by evaporating 650 grams of 15 perentKBr solution to dryness...... 650 * (.15) = 97.5 is this correct
asked on October 25, 2010 
math
which of the following expresses 374,274 in scientific notation? 1] 3.74274 x 105 2] 3.74274 x 106 3] 37.4274 x 106 4] 374.274 x 105 5] 3742.74 x 103
asked on November 15, 2012 
Physics
The temperature of a monatomic ideal gas remains constant during a process in which 4500 J of heat flows out of the gas. How much work (including the proper + or  sign) is done on the gas? J
asked on April 19, 2008 
math
vickie earns $20,000 a year as a bookkeeper.if she receive a raise of 2%,how could her new total alary be represented? 1] 0.02[$ 20,000] 2] $20.000/0.02 3] 0.02[$ 20,000] + 0.02 4] 0.02[$ 20,000]+ $20,000 5] $20,0000.02 + $20,000
asked on November 15, 2012 
Calc
A box has a bottom with one edge 3 times as long as the other. If the box has no top and the volume is fixed at V, what dimensions minimize the surface area?
asked on October 28, 2010 
Chemistry
21.46 mL of Iodine I2 was standards with 0.1004 g sample of ascorbic acid. At the blue starch end point, what is the molarity of the iodine I2 solution?
asked on April 18, 2010 
history
Comparing French, English, and Dutch Colonies, which ones attracted the most settlers, and which the fewest? In what colonies were women scarce? What impact did these differences in emigration have on various colonies' development?
asked on August 25, 2010 
history
What role did religion play in early European efforts at overseas colonization? Did religious factors always encourage colonization, or did they occasionally interfere with European expansion?
asked on August 25, 2010 
Calc
At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 20 knots and ship B is sailing north at 20 knots. How fast (in knots) is the distance between the ships changing at 4 PM?
asked on October 28, 2010 
English
Find the direct object. Chief Joseph wanted equality for his people The direct object would be "wanted" right? Since it technically receives the action of the verb.
asked on November 28, 2011 
Calc
A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.4 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 10 cm. (The answer is a positive number).
asked on October 28, 2010 
statistics
an industrial designer wants to determinethe average amount of time it takes an adult to assemble an easyto assembletoy .use the following data (inminites)a random sample, to construct a 95% confidence interval for the mean of the population sampled:17
asked on November 10, 2011 
math
how do you figure out the fraction a+1/6=3/5
asked on December 14, 2010 
math
If you flip a coin twice, what is the probability that a head or a tail will land up on the first flip. Express your answers as a percent.
asked on January 13, 2015 
Psych. (? on PTSD)
Is there an increased or decreased parasympathetic nervous system arousal in people with PTSD?
asked on December 2, 2009 
math
i had to simplify this. Am I right 7t + 3 + t +9 my answer is 8t + 12
asked on May 20, 2016 
Math
Billy has a board that's six and 2/3 feet long. He cuts it into 12 equal pieces. How long is each piece?
asked on April 8, 2013 
heritage hihg school
list the 13 prefixes and numerical value (exponent) in order from largest to smallest. (ex;a5 where a is the prefix and 5 is the exponent!)for u use u!
asked on March 13, 2013 
Chem
Is this correct NO2 + H2O > NO3 + H2 and is it hazardous
asked on April 19, 2010 
Art
I need to find one famous piece of artwork of the Greek mythological character Narcissus other than a painting or statue. Is there a temple or architecture that features him that I don't know about?
asked on October 21, 2009 
Science
Which pairs of substances will form a buffer when mixed in equal concentrations? A)NaOH and HCl B)NH3 and NH4+ C)H2O and NH3 D)KCl and NaCl E)HF and F
asked on May 28, 2011 
Calc
Water is leaking out of an inverted conical tank at a rate of 5800 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 8 meters and the diameter at the top is 6.5 meters. If the water
asked on October 28, 2010 
Mythology
I need to find another mythological character other than Siddhartha who had a vast of wealth but was selfless and chose to help others instead.
asked on October 25, 2009 
science
I have an older furnace dryer which is used for drying copper ore, it operates at a temperature of 1000to 2500 degrees F.I have low concentrations of hydrogen sulfide in the area.My question is can sulfur dioxide be produced without the ore present at
asked on July 7, 2012

physics
7.61 rad/s
posted on October 26, 2017 
math
i really need your help please
posted on November 21, 2012 
math
thanks
posted on November 15, 2012 
Physics 2
A 45 turn coil of radius 5.1 cm rotates in a uniform magnetic field having a magnitude of 0.49 T. If the coil carries a current of 40 mA, find the magnitude of the maximum torque exerted on the coil.
posted on August 5, 2012 
Chemistry
is that correct..
posted on October 25, 2010 
Chemistry
so par say i should convert .1004 g ascorbic acid to mole/L.... if so then, is the 12 mole/L the conversion factor here?
posted on April 18, 2010 
answer please!!!!! Math
what is the question....?
posted on April 18, 2010 
math, answer please!
if you have to find P then set them equal to zero eg p7=0 p=7 OR foil it out eg (p7)(p+8)=P2+p56
posted on April 18, 2010 
2nd grade
Do we want to visit Milwaukee, Wisconsin?
posted on October 21, 2009 
Math
Marla is 25.
posted on September 17, 2009 
Physics
I divided the 1.6605*10^27 by 294.13 and got 1.77*10^25kg, but that doesn't seem to be the right answer.
posted on April 20, 2008 
Physics
my teacher says this is the incorrect answer. what could be wrong
posted on April 20, 2008 
Physics
I'm not sure what we are doing wrong but the computer is saying 4500 is wrong
posted on April 20, 2008