Friday
December 19, 2014

Posts by Ashley


Total # Posts: 2,862

Statistics
The average amount of time people spend on facebook each day is 71 minutes, with a standard deviation of 4.7 minutes. Are you more likely to select a random person that spends less than 68 minutes per day, or a group of 35 people that spend on average less than 65 minutes per ...
November 15, 2012

physics
a ball rolls off a 1.7m high desk and lands 1.35m away from the desk. how fast was it rolling?
November 15, 2012

trig
analyze given equation for following characteristics. (amplitude period, phrase shift) y= 3sin (2x-(3.14/2))
November 15, 2012

math
Phillip, the proprietor of a vineyard, estimates that the first 9600 bottles of wine produced this season will fetch a profit of $5 per bottle. However, the profit from each bottle beyond 9600 drops by $0.0002 for each additional bottle sold. Assuming at least 9600 bottles of ...
November 14, 2012

Geometry
y-8= 4/3 x(x+4)
November 14, 2012

chemistry
A compound is pure is one spot develops. If the compound is not pure, multiple spots will develop for each compound in the mixture.
November 13, 2012

Physics
A driver approaches an intersection at a speed of 50km/h, when the light turns amber. The driver applies brakes to get the maximum stopping force without skidding. The car has a mass of 1500kg and the force of static friction between the tires and the road is 1.1*10^4N. ...
November 12, 2012

Physics
A driver approaches an intersection at a speed of 50km/h, when the light turns amber. The driver
November 12, 2012

surface area & volume
Apothem=6sqrt3 side=12 SA=2B+ph SA=748.25+72h is that correct? i just don't understand how to figure out the height..
November 12, 2012

surface area & volume
How can I find the surface area and volume of a hexagonal prism if I don't know the height, only apothem and one side of the base? Thank you!
November 12, 2012

chemistry
You are doing an experiment to determine the Ksp of a salt. If, while filtering, some of the solid passed through the filter and was not taken out before titrating, how would the calculated Ksp and solubility be affected? Thanks.
November 11, 2012

Physics
Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.70 105 Pa and the pipe radius is 2.50 cm. At the higher point located at y = 2.50 m, the pressure is 1.30 105 Pa and the pipe radius is 1.60 cm. (a) ...
November 9, 2012

Physics
Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.70 105 Pa and the pipe radius is 2.50 cm. At the higher point located at y = 2.50 m, the pressure is 1.30 105 Pa and the pipe radius is 1.60 cm. (a) ...
November 9, 2012

Calculus
Is pi in the denominator?
November 7, 2012

Calculus
A solid is formed by adjoining two hemispheres to the ends of a right circular cylinder. The total volume of the solid is 2 cubic centimeters. Find the radius of the cylinder that produces the minimum surface area. (Round your answer to three decimal places.)
November 7, 2012

calc 1
Water is leaking out of an inverted conical tank at a rate of 500.000 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 8.000 meters and the diameter at the top is 6.500 meters. If the water level is ...
November 6, 2012

physics
a race car accelerates from rest at +7.2 m/s^2 for 4.5 s. How fast will it be going at the of that time ??
November 6, 2012

statistics.. URGENT!! PLZ!!
In a learning experiment, untrained mice are placed in a maze and the time required for each mouse to exit the maze is recorded. The average time for untrained mice to exit the maze is µ = 50 seconds and the standard deviation of their times is ? = 16 seconds. 64 ...
November 6, 2012

Physics... URGENT !!!!
A 66.7-kN car is travelling at 66.5 mph when the driver decides to exit the freeway by going up a ramp. After coasting 418 m along the exit ramp the car\'s speed is 28.9 mph, and it is h = 13.1 m above the freeway. What is the magnitude of the average drag force exerted on...
November 6, 2012

physics
The force of friction between a crate and the floor it is sliding over depends on? a. the speed the crate is moving over the floor with b. the surface area of the crate in contact with the floor c. how much force you are exerting on the crate parallel to the crate's motion...
November 2, 2012

Physics
A space station shaped like a giant wheel has a radius 105 m and a moment of inertia of 5.09 108 kg · m2. A crew of 150 lives on the rim, and the station is rotating so that the crew experiences an apparent acceleration of 1g. When 100 people move to the center of the ...
November 1, 2012

Physics
A 190-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope. What constant force would have to be exerted on the rope to bring the merry-go-round from rest to ...
November 1, 2012

chemistry
A TUMS tablet was dissolved in 110.00 ml of 0.1022 M HCl and analyzed for CaCO3 according to the procedure described in the lab manual. It took 7.48 ml of 0.1005 M NaOH to reach the endpoint. Calculate the mass of CaCO3 in TUMS tablet to the correct number of significant ...
October 31, 2012

AP Psychology
In comparison to generalized anxiety disorder, panic disorder is characterized by periods of distress that are more intense and more prolonged. less intense and less prolonged. more intense and less prolonged. less intense and more prolonged. unwanted repetitive thoughts and/...
October 31, 2012

Physics
Monochromatic light of wavelength 550 nm passes through a diffraction grating that has 55000 lines/m. A bright line appears on the screen at an angle of 12.23o from the central bright fringe. What is the order of this bright line? 5 6 7 8
October 31, 2012

General Chemistry I
When a 0.432g sample of a mixture of volatile hydrocarbons is burned in a bomb calorimeter with heat capacity of 3046 J/C, the temperature rises by 7.82C. How much energy (in KJ) is released during combustion. **I got that answered** 3046x7.82C=23819.72J the answer is negative...
October 31, 2012

General Chemistry I
Write the formation reactions. {You Must include the states of matter for each atom or compound} NaClO4(s)
October 31, 2012

physics
Starting from rest, a 75 kg skier slides down a 17.0° slope. If the coefficient of kinetic friction between the skis and snow is 0.120 and it takes 16.9 s to get to the bottom, how long is the ski trail? (Use g = 9.8 m/s2.)
October 30, 2012

TRIG HONORS CH: 5.8
a ship leaves port with a bearing of S 42deg W after traveling 7 miles, the ship turns 90deg and travels on a bearing of N 52deg W for 10 miles at that time, what is the bearing of the ship to the port?
October 29, 2012

physics
A 1500-N uniform boom at = 61.0° to the horizontal is supported by a cable at an angle θ = 29.0° to the horizontal as shown in the figure below. The boom is pivoted at the bottom, and an object of weight w = 2350 N hangs from its top.
October 29, 2012

PHYSICS 2
A horizontal wire that runs east-west carries a steady current to the east. A C-shaped magnet is placed so that the wire runs between the poles, with the north pole above the wire and the south pole below. What direction of the magnetic force on the wire between the poles?
October 28, 2012

biology
If your ears were larger, you would: a. be able to hear sounds at lower amplitude (softer sounds) b. lose the ability to hear low amplitude high frequency sounds c. not experience any difference in your hearing ability d. none of the above
October 27, 2012

biology
When the stereocilia of a hair cell in the inner ear bends, it causes: a. potassium ions to enter the hair cell b. you to hear low frequency sounds c. chloride ions to leave the basilar membrane d. all of the above
October 27, 2012

History
There was a threat of American expansion into British North America. Where were the concern of the Americans expanding too? Why would this area be a prime target?
October 26, 2012

Canadian History
There was a threat of American expansion into British North America. Where were the concern of the Americans expanding too? Why would this area be a prime target?
October 26, 2012

physics
A 4.170 kg block of wood rests on a steel desk. The coefficient of static friction between the block and the desk is μs = 0.505 and the coefficient of kinetic friction is μk = 0.255. At time t = 0, a force F = 12.7 N is applied horizontally to the block. State the ...
October 25, 2012

math
A (2,-3)b(4,4) C (6,-8) i think these are most likely
October 24, 2012

math
triangle ABC, with vertices A(2,3), B(4,-4), C(6,8), is reflected across the x-axis to form a triangle A'B'C'. Give the new coordinates for triangle A'B'C'.
October 24, 2012

Biology
WHY WOULD PLANT CELLS HAVE 1 LARGE CENTRAL VACUOLE AND NOT SEVERAL SMALL ONES LIKE IN AN ANIMAL CELL?
October 23, 2012

Biology
thanks :)
October 23, 2012

Biology
WHY WOULD PLANT CELLS HAVE 1 LARGE CENTRAL VACUOLE AND NOT SEVERAL SMALL ONES LIKE IN AN ANIMAL CELL?
October 23, 2012

Biology
HOW DOES A CELL WALL HELP WITH “TURGOR PRESSURE?”
October 23, 2012

Biology
WHAT CELL PART AIDS IN MOVEMENT AND INCREASES THE SURFACE AREA?
October 23, 2012

Biology
WHAT ORGANELLE WILL BE USED DURING CELLULAR REPRODUCTION TO HELP ANCHOR THE SPINDLE FIBERS?
October 23, 2012

Biology
Golgi apparatus
October 23, 2012

Biology
WHAT ORGANELLE AIDS IN TRANSPORTING SUBSTANCES?
October 23, 2012

Biology
WHAT ORGANELLE IN THE ANIMAL CELL AIDS IN DIGESTING OLDER CELL PARTS AND WASTES?
October 23, 2012

Biology
WHERE IN AN ANIMAL CELL IS WATER STORED?
October 23, 2012

Math
From a boat on the lake, the angle of elevation to the top of a cliff is 26°35'. If the base of the cliff is 85 feet from the boat, how high is the cliff (to the nearest foot)? A. 56 feet B. 43 feet C. 53 feet D. 46 feet I HAVE BEEN WORKING ON THIS FOREVER! please help...
October 23, 2012

I.E.D
sorry it is just... i don't know her
October 23, 2012

I.E.D
so u want me to FAIL and be a dropout thanks for the inpiration
October 23, 2012

chem 111
the color change at the endpoint should persist for 30 seconds. explain why the time lapse is a good titration technique.
October 23, 2012

math
Compute the number of vinyl tiles, measuring 10 in. each side, needed to tile a kitchen measuring 20ft. by 16ft. _____tiles
October 23, 2012

chemistry
When 1662 J of heat energy is added to 45.9 g of hexane, C6H14, the temperature increases by 16.0 °C. Calculate the molar heat capacity of C6H14.
October 20, 2012

Math (Trig)
In 1893, the city of Chicago put on a World's Fair to celebrate the 400th anniversary of Columbus' trip to the Americas. The most spectacular at this fair was a huge Ferris Week built by an engineer named George Ferris. This remarkable structure had a diameter of 250 ...
October 20, 2012

Math
thank you!
October 19, 2012

Math
I need help understanding truth tables please.
October 19, 2012

math
The weekly demand for the Pulsar 25 color LED television is represented by p, where p denotes the wholesale unit price in dollars and x denotes the quantity demanded. The weekly total cost function associated with manufacturing the Pulsar 25 is given by C(x), where C(x) ...
October 19, 2012

math
Middletown to star city is 232 miles. Middletown to Rileyville is 136 miles in the same direction. About how far is it Rileyville to Star city to the nearest hundred? How much difference is there between your estimate and the exact number of miles?
October 18, 2012

Math
Middletown to star city is 232 miles. Middletown to Rileyville is 136 miles in the same direction. About how far is it Rileyville to Star city to the nearest hundred? How much difference is there between your estimate and the exact number of miles?
October 18, 2012

Calculus
use the mean value theorem to find the c's on the open interval (a,b) such that fprime(c)= (f(b)-f(a))/(b-a) f(x)= 3xlog(base 2)x , [1,2]
October 17, 2012

c
use the mean value theorem to find the c's on the open interval (a,b) such that fprime(c)= (f(b)-f(a))/(b-a) f(x)= 3xlog(base 2)x , [1,2]
October 17, 2012

Physics
In a Physics laboratory class, an object of mass 2.1 kg, attached by massless strings to two hanging masses, m1= 1.0 kg and m2= 4.0 kg, is free to slide on the surface of the table. the coefficient of kinetic friction between m2 and the table is 0.30. calculate the ...
October 15, 2012

AP Chemistry
A balloon is filled to a volume of 2.0 102 mL at a temperature of 33.0°C. The balloon is then cooled at constant pressure to a temperature of 1.00 102 K. What is the final volume of the balloon?
October 15, 2012

math
Use properties of logarithms to expand each logarithmic expression as much as possible. Where possible evaluate logarithmic expsressions without using a calculator. logb x^7
October 15, 2012

Calculus
Thank you!!
October 15, 2012

Calculus
yes,i got 7pi/6 and 11pi/6 is that correct?
October 15, 2012

Calculus
f(theta)= 4sec(theta)+ 2tan(theta), 0 less than theta less than 2pi. find all critical numbers
October 15, 2012

Science
How would you prepare 10 mL of 0.08 M NaCl in sodium acetate buffer? (Stock Sodium acetate buffer: 0.1 M)
October 14, 2012

literature
In what way does the setting of a small town during the Great Depression impact the characters and plot of "Gumption"? a. The characters can use their wealth to choose among many options for resolving conflicts. b. The characters are unconcerned about the way they ...
October 12, 2012

Math (algebra)
3$ *
October 12, 2012

Math (algebra)
I have no idea how to solve this problem... A village wants to build a community center that is projected to cost 1.2 million dollars. Cost per resident is increased by #$ as it is discovered that there are 225 fewer residents than when planning began 2 years ago. What is the ...
October 12, 2012

math
At a fourth of July sale, Wanda bought a table marked for 30% off. What was the original price if Wanda paid only $84?
October 10, 2012

aglebra
7 x+16-9x=18-13 x+11 x-2
October 9, 2012

Trig!
Find the following values for each function. A. f(0) B. f(-1) C. f(-x) D. f(x+1) f(x)=2x^2+3x-4 and f(x)=x^2/x+1
October 9, 2012

Chemistry
Consider a saturated solution of calcium fluoride in 0.086 M potassium nitrate. Complete the following tasks, and then answer the question. a) Write the chemical equation corresponding to Ksp. b) Write the defining expression for the thermodynamic solubility product constant, ...
October 7, 2012

science
A prisoner that is funny would be what periodic table element?
October 5, 2012

Precalculus
A direction of S 23 degree W is the same as which of the following in air navigation? Please let me know how you did it. Thank you!
October 4, 2012

business english
which of the following would not be considered a violation of a convention? A) Abusiness letter is hand written B) A resume is present in an electronic format. C) Clipart is included throughout a loan contract. D) An attorney's business card is printed in red font on a ...
October 3, 2012

Math
If I have the inputs 1 2 3 4 and 5 and my outputs are 1 4 9 16 and 25 what is the output
October 2, 2012

chemistry
Calculate ΔG at 25°C for the precipitation of lead(II) chloride from mixing 100. mL of 0.025 M lead(II) nitrate solution with 100. mL of 0.15 M sodium chloride solution. The ΔG° for the reaction at 25°C = −27.36 kJ/mol. (Hint: write out reaction ...
October 2, 2012

statistics
4. A college student is interested in whether there is a difference between male and female students in the amount of time spent studying each week. The student gathers information from a random sample of male and female students on campus. Amount of time spent studying is ...
October 1, 2012

statistics
4. A college student is interested in whether there is a difference between male and female students in the amount of time spent studying each week. The student gathers information from a random sample of male and female students on campus. Amount of time spent studying is ...
October 1, 2012

Calculus
where did you get y^2 -1 from? Did you subtract y^2 from the right side? if so where did the -1 come from?
October 1, 2012

Calculus
how did you know it was + or - l? I got what x equals but I was confused on how to find the y values?
October 1, 2012

Calculus
determine the point(s)at which the graph of y^4 = y^2 -x^2 has a horizontal tangent.
October 1, 2012

ECO 372
How does a stimulus program (through the money multiplier) affect the money supply?
September 28, 2012

Physics science
Dana and Gina are pushing on a box. Dana pushes with 250 N of force and Gina pushes with 100 N of force. A. What is the net force if tey both push the box in the same direction. B. what is the net force if they push in the opposite directions?
September 27, 2012

organic chemistry
Why is steam distillation rather than a simple distillation used to isolate eugenol? My answer is because the temperature goes nowhere near their boiling points, which minimises the risk of decompostion. Is it that right? If not then don't you mind if you can explain to me...
September 26, 2012

College Physics
Vector subtraction (F1 - F2) is a special case of vector addition, since F1- F2 = F1 + (-F2). Use the data (magnitude and direction) of F1 and F2 obtained in measurement 1 to find out the magnitude and direction of the resultant vector of F1 - F2. The data is: F1: 200g and 30...
September 26, 2012

english
our cat
September 26, 2012

chemistry
you are supposed to chose the answer (1-6) that best finishes the beginning sentence
September 19, 2012

math
The 1/2 should be 1/3, sorry
September 19, 2012

math
Average rate of change: h(x)= x^3 -0.5e^x at [0,1]
September 19, 2012

college physics
What is the kinetic energy of a 25 kg dog that is running at a speed of 8.9 m/s (about 20 mi/h)?
September 19, 2012

physics
How much work does gravity do on a 0.120-kg ball falling from a height of 17.0 m?
September 19, 2012

Physics
A small fish is dropped by a pelican that is rising steadily at 0.52 m/s(b) How far below the pelican is the fish after 2.4 s?
September 17, 2012

math
A kayak moves at a rate of 12 mph in still water. If the rivers current flows at a rate of 5mph how long does it take the boat to travel 23 miles upstream?
September 16, 2012

Physics
A large kite of mass 3 kg is flying through the air on a windy day. Currently, the tension from the string on the kite has a magnitude of 7.7 N at an angle of θ = 33.5 degrees. The current acceleration of the kite has a magnitude of a = 7.56 m/s2 at an angle of φ = ...
September 16, 2012

circles
if spoke of the ferris wheel is 20 feet long what is the circumference
September 16, 2012

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