Thursday
October 23, 2014

Posts by Allen


Total # Posts: 172

math
Identify the solution(s) of the system of equations, if any. x + 2y = 7 3x - 6y = 3 (4, ) (4, ) (, 4) (, 4)
October 21, 2014

math
what the difference of 13 over 32 and 1 over 2
October 16, 2014

corporate finance
Your finance text book sold 45,500 copies in its first year. The publishing company expects the sales to grow at a rate of 20.0 percent for the next three years, and by 7.0 percent in the fourth year. Calculate the total number of copies that the publisher expects to sell in ...
July 30, 2014

physics
Calculate the speed of water (in m/s) flowing from a pipe at the bottom of an open topped barrel which has a water level 138 cm high in it.
June 21, 2014

physics
A sound registers 77.9 decibels on a detector. What is the intensity in W/m2? Assume the threshold of human hearing is 1.0×10-12 W/m2. Give your answer in picowatts/m2. 1 pW = 1×10-12 W/m2
June 21, 2014

physics
Calculate the speed of a wave in m/s along a taut string with tension 139 Newtons and a mass per unit length of 3.6 grams per metre.
June 21, 2014

college physics
"The Magnitude of the buoyant force is equal to the weight of fluid displaced” is a statement of which principle in the study of fluids? Select one: a. Pascal's Principle b. Archimedes' Principle c. Bernouilli’s Principle d. The Equation of Continuity
June 16, 2014

physics
An object of mass 1.6 kg is dropped from a height of 2.9 metres. It lands with a speed of 2.8 m/s. How much energy was lost due to air resistance? (Give your answer to 2 s.f., expressed as a magnitude)
June 9, 2014

physics
Calculate the magnitude of the force if a ball of mass 249.9 grams, and initial velocity +16.5 m/s is struck back on the same path with a final velocity of -22.0 m/s. Assume the contact time is 3.1 milliseconds. Use 2 s.f.
June 9, 2014

physics
An astronaut, mass 128.2 kg including spacesuit, pushes off from the International Space Station (mass 110 tons) with a speed of 1.2 m/s. What is the speed of the Space station in the opposite direction? Use 2 s f. for your answer
June 9, 2014

Physics
A system gains 473J of kinetic energy while losing 271J of potential energy. The thermal energy increases by 127J . Use an energy bar chart of this process to find the external work Wext.
June 5, 2014

Physics
A block of mass 12.0 kg is initially sitting at rest on a 30.0o incline. There is a spring mounted to the ramp with spring constant k = 13500 N/m. The block is released to slide down the incline and comes to a stop momentarily after the spring has been compressed a distance ...
May 30, 2014

Chem
Calculate the standard cell potential given the following standard reduction potentials: Al3++3e−→Al;E∘=−1.66 V Fe2++2e−→Fe;E∘=−0.440 V
May 18, 2014

Language Arts (english)
1.In general terms, how do the townspeople in “The Handsomest Drowned Man in the World” react to the body which washes up on their shore? 2.Why do the townspeople react to Esteban as they do? What is he to them? 3.What is a fable, how might “The Handsomest ...
May 16, 2014

Algebra
How do I solve: One leg of a right triangle is 4 m longer than the other. If the length of the hypotenuse is 18 m, how long are the other two legs?
April 29, 2014

Math
Find the z-score such that the area under the standard normal curve to the left is 0.25
December 2, 2013

math
Find the value of z = 0.94
December 2, 2013

Solid mensuration
The bases of a triangular right prism are apart. find the volume and the total surface area of the prism if one side of the quilateral triangular base measures 6cm
April 25, 2013

Physics
In a photoelectric-effect experiment it is observed that no current flows unless the wavelength is less than 570nm . A)What is the work function of this material? W0= in eV B) What is the stopping voltage required if light of wavelength 420nm is used? stopping voltage in V
April 23, 2013

physics
A gamma-ray photon produces an electron-positron pair, each with a kinetic energy of 275keV . What was the energy of the photon? E=in MeV What was the wavelength of the photon? wavelength in m Please help thank you!
April 22, 2013

Physics
In a photoelectric-effect experiment it is observed that no current flows unless the wavelength is less than 570nm . A)What is the work function of this material? W0= in eV B) What is the stopping voltage required if light of wavelength 420nm is used? stopping voltage in V
April 22, 2013

phics
In an experiment on motion, a cart weighing 240 N was pulled up an inclined plane. Which of the following would be the expected reading on the spring scale as the cart is pulled up an inclined plane set upon two books
April 11, 2013

math
Your question: "The shorter diagonal of a rhombus is 50 mm long. Each of its obtuse angles measures 140. Find the length of each side."
February 20, 2013

cmsd
Your question: "The shorter diagonal of a rhombus is 50 mm long. Each of its obtuse angles measures 140. Find the length of each side."
February 20, 2013

Finance
77
December 9, 2012

Math
Mark bought 54 cm of lace and 2m 45cm of black lace. How much total lace in meters did he buy?
December 2, 2012

posibility
One problem encountered by developers of the space shuttle program is air pollution in the area surronding the launch site. Acertain direction from the launch site is considered critical in terms of hydrogen chloride pollution from the exhaust cloud. It has been determined ...
November 16, 2012

Finance
The following information was available as of the close of business June 1, 2004 on government of Canada bonds. Coupon...Maturity.....Price.....Yield 5.00%......June 1, 2005......102.35......2.60 10.50%......June 1, 2006......113.91......3.26 8.50%......June 1, 2007.....107.41...
November 6, 2012

Math 102
What number must be added to the numerator and subtracted from the denominator of 10/23 to obtain a fraction equivalent of 6/5? Please provide step by step, this is a word problem for rational expressions. Thank you
October 4, 2012

Business- Labor
true or false Arbitration and grievance procedures have done virtually nothing to prevent chaos and disorder in labor relations.
September 18, 2012

finite math
Given n(A')=23, n(B')=16, and n((A [intersect] B) U (AUB)'))= 24, find (A [intersect] B) I apologize but intersect was the best way I found to represent the upside down U symbol.
September 9, 2012

Business- Labor
how sympathetic are you to the statement of a former general motors chairman that offering a union leader a seat on GMs board of directors made "as much sense as having a member of GM's management sitting on the board of an international union?" Explain. I need ...
September 6, 2012

finite math
suppose that 3 digits are selected at random from the set S={1,2,3,4,5,6} and are arranged in random order. Find the probability that the resulting 3-digit number is less than 300.
September 4, 2012

Business- Labor
I agree, they are typically failures. They are not able to create a healthy balance between supply and demand.
August 23, 2012

Business- Labor
governmental wage and price controls should never be tried again. they have been failures. agree? why or why not?
August 23, 2012

Business- Labor
how would this classify them as second-class citizens?
August 23, 2012

Business- Labor
do you believe that public employees should be able to employ collective bargaining for wage increases or should the ‘free market’ continue to dictate wages in the public sector? Why or why not?
August 23, 2012

Business- Labor
declining labor union membership
August 12, 2012

Business- Labor
Labor’s membership stagnation in the last half-century can be explained by several formidable obstacles. Explain
August 12, 2012

Physics
For a record playing at 45 rpm, find the frequency and the angular velocity. Frequency= Angular velocity=
April 24, 2012

chemistry
How many grams of carbon can be burned in 15 dm3 of oxygen and many dm3 of CO2 is produced?
April 17, 2012

chemistry
how many grams of magnesium are required to liberate 250 cm3 of Hydrogen gas from HCL
April 17, 2012

alebra
how do i simplify 3m+n/4n^2m + 3m +n +5/4n^2m
March 1, 2012

alegbra
what is the least common multiple of 16x^3yz^3 and 14z^6xy^4c
March 1, 2012

alegbra
how do i simpllify 5/x + 4/x^2 - 3/x^3
March 1, 2012

physics
assume he do not bounce at all
February 21, 2012

physics
if one man 50 kgs fell from 10 meter high builder, how much impact force when he hit the concrete ground and how long the time it happen.
February 21, 2012

College Physics
Find the minimum work required to carry a truckload of furniture weighing 1.99 104 N to a third-story apartment, 24.0 m above the truck.
October 14, 2011

College Physics
A 4.30 kg block starts from rest and slides down a frictionless incline, dropping a vertical distance of 2.60 m, before compressing a spring of force constant 2.20 104 N/m. Find the maximum compression of the spring.
October 14, 2011

College Physics
A 4.30 kg block starts from rest and slides down a frictionless incline, dropping a vertical distance of 2.60 m, before compressing a spring of force constant 2.20 104 N/m. Find the maximum compression of the spring.
October 14, 2011

College Physics
A 4.30 kg block starts from rest and slides down a frictionless incline, dropping a vertical distance of 2.60 m, before compressing a spring of force constant 2.20 104 N/m. Find the maximum compression of the spring.
October 14, 2011

College Physics
A 4.30 kg block starts from rest and slides down a frictionless incline, dropping a vertical distance of 2.60 m, before compressing a spring of force constant 2.20 104 N/m. Find the maximum compression of the spring.
October 14, 2011

College Physics
A 4.30 kg block starts from rest and slides down a frictionless incline, dropping a vertical distance of 2.60 m, before compressing a spring of force constant 2.20 104 N/m. Find the maximum compression of the spring.
October 14, 2011

Physics
Where is the 15 coming from? I thought that you may have meant 25 so I calculated 1.21*9.8*25*cos 25 and I got the answer wrong.
October 14, 2011

mystery trip
can you help me unscramble this famous couple names enargraaetnmgremaad
October 11, 2011

Physics
During a baseball game, a batter hits a pop-up to a fielder 83 m away. The acceleration of gravity is 9.8 m/s^2. If the ball remains in the air for 6.5 s, how high does it rise? Answer in units of m
October 1, 2011

english 30-1
write a short compostion discussing social satire in happy event. what aspects of society is satized? how are devices like irony and hyperbole is used to achieve satire? what changes does the author suggest?
September 23, 2011

chemistryt
Hexane has a density of 0.659 g/ml. How many milliliters (mL) would a student need to pour in order to get 49.5 g of hexane?
September 12, 2011

Physics
A baseball is tossed at a steep angle into the air and makes a smooth parabolic path. Its time in the air is t and it reaches a maximum height h. Assume that air resistance is negligible. a. Show that the height reached by the ball is gt^2/8. b. If the ball is in the air for 4...
July 17, 2011

Physics
A rock thrown from a bridge hits hte water below at a horizontal distance x directly below the throwing point. The rock travels a smooth parabolic path in time t. a. Show that the virtical distance of the bridge above water is 1/2gt^2. b. What is the height of the bridge if ...
July 17, 2011

mathematics
2a^2-3a-2/4a^2-1 (4a^2-1 = denominator) divided by a^2-4/2a^2-5a+2 <--- denominator
July 3, 2011

physics
If you do 100 j work in 50 seconds, then your Power output is
June 18, 2011

statistics
B is the answer
June 10, 2011

statistics
In a binomial distribution: A) the random variable X is continuous. B)the probability of event of interest (pie symbol)is stable from trail to trial C) the number of trials n must be at least 30 D) the results of one trial are dependent on the results of the others. I narrowed...
June 10, 2011

MATH(quick Help please)
Out of 42 kids in a class twice as many failed Ela as math,4 failed both. If 7 failed neither, find how many failed each subject. Show work thanks
June 6, 2011

Health(quick question)
why do you need Fiber in foods and is it used to build up muscles
June 4, 2011

ELA (QUICK QUESTION)
Thanks you gave me great ideas
May 31, 2011

ELA (QUICK QUESTION)
i need some postive and negative aspects of schools. i need help starting my intro can you help me thanks
May 31, 2011

Math
Here's a frequency distribution table for the speeds of a sample of automobiles. Speed(MPH) Frequency Midpoint(I found) 50-54 2 52 55-59 4 57 60-64 5 62 65-69 10 67 70-74 9 72 75-79 5 77 I am trying to find the variance but whatever I do I can't seem to find the answer...
May 27, 2011

please explain poster thx
i found this propaganda poster can you explain it on the poster it says When you ride Alone you ride with Hitler. The next poster i found was Be ready join now CAn you explain these two posters thanks
May 26, 2011

Ela(summary)
thanks you really helped me
May 20, 2011

Ela(summary)
Can you give my a nice summary for milk weed? i really dont get the book i read it
May 20, 2011

History
Why did Arthur Ashe created the National Junior Tennis?
May 16, 2011

SCIENCE(easy)
explain what might happen to a boulder(large/rock) that is left in your school yard for a long time.
May 15, 2011

TECH(recycle)
I'm making a recycle logo i need some good ideas to put in the logo and can u give me examples of good recycling logos
May 9, 2011

logos
i need some amazing logos can u help
May 6, 2011

free verse poems please
i need really good examples of free verse poems please
May 5, 2011

POEMS tanka poem
examples of tanka poems thanks
May 5, 2011

poems
I NEED EXAMPLES OF HAIKU POEMS
May 5, 2011

math
Condensing 1/2logs+logm+logh-2logI-logd-logk logt+logh+logx-2logl-log0-logl
May 5, 2011

math
solve -4+7logx=10 & log(x+3)+log(x-2)=log14
May 5, 2011

Math simple question
angles 1 and 2 are adjacent angles on a line. What is the sum of the measures of the angles? a.30 b.60 c.90 d. 180 I think the answer is b.
May 4, 2011

Living on your own
What would the greatest financial challenge in living on your own be? I'm guessing that would be paying off utilties, bills, grocery.
March 28, 2011

chemistry
A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 450 mL of a solution that has a concentration of Na+ ions of 0.700 M
March 27, 2011

chemsitry
Calculate the mass in grams of sodium bromide, NaBr, are needed to prepare 250.0 mL of a solution of sodium bromide that is 3.50% (m/v).
March 20, 2011

math
There are 1728 cubic inches in a cubic foot. Therefore, you divide 5040 by 1728: 5040 / 1728 = 2.92 cubic feet. It is easy to overlook that to get a cubic foot, you have 12 rows, 12 columns, and 12 layers of cubic inches. 12 x 12 x 12 = 1728
March 16, 2011

geometry
Find the perimeter and area of a right triangle if one leg measures 24 ft. and the other leg measures 70 ft. Please show the steps so I can do the next one. Thanks
March 5, 2011

geometry
Find the perimeter and area of a right triangle if one leg measures 24 ft. and the other leg measures 70 ft. Please show the steps so I can do the next one. Thanks
March 5, 2011

math
Dane is three years older than twice his brother's age,(b). Which algebraic expression below represents Dane's age? A. b+3 B. 2b+3 C. 3-2b D. 2b-3 I think the answer is C.
February 25, 2011

math
Daniel's bonus at work this year is $1000.00 added to 20% of his yearly salary. If X represents his yearly salary, which of the following algebraic expressions should be used to figure the amount of his bonus? A. 0.2(1000+x) B. 1000+x/0.2 C. 0.2x+1000 D. x/0.2+1000
February 25, 2011

math
I think its c.
February 25, 2011

math
Dane is three years older than twice his brother's age,(b). Which algebraic expression below represents Dane's age? A. b+3 B. 2b+3 C. 3-2b D. 2b-3
February 25, 2011

math
u the best teacher ever!!!!!!!!!!!!!!!!!!!!!
February 25, 2011

math
is the answer 10 miles
February 25, 2011

math
On the way to school, Bobby noticed the school bus travels 8 miles north, then turns west and goes 6 miles to get to school. If there were a road that went straight from Bobby's house to school, how long the road would be?
February 25, 2011

math
Which set of decimal numbers is in the order from least to greatest? A. .04,.004,.4,.043 B..004,.4,.043,.401 C..043,.401,.004,.04 D..004,.043,.4,.401
February 25, 2011

math
I say its c
February 25, 2011

math
a. 5/12=1.25/x b. 5/12=x/1.25 c. 5/x=12/1.25 d. x/5=12/1.25
February 25, 2011

math
At the school store, 5 pens sell for $1.25. Which proportion will help find the cost of 12 pens?
February 25, 2011

math
b is the answer
February 25, 2011

Pages: 1 | 2 | Next>>

Search
Members