Wednesday
January 28, 2015

Posts by Ali


Total # Posts: 544

physics
Three spheres, each with a negative chrge of 4.0x10^6C, are fixed at the vertices of an equilateral triangle whose sides are 0.20 m long. Calculate the magnitude and direction of the net electric force on each spehere. i used this: (K)Cos30((4.0*10-6)*2)/(0.2*2) and i get 3.1 ...
January 1, 2011

physics
Three spheres, each with a negative chrge of 4.0x10^6C, are fixed at the vertices of an equilateral triangle whose sides are 0.20 m long. Calculate the magnitude and direction of the net electric force on each spehere. i used this: (K)Cos30((4.0*10-6)*2)/(0.2*2) and i get 3.1 ...
January 1, 2011

physics
Three spheres, each with a negative chrge of 4.0x10^6C, are fixed at the vertices of an equilateral triangle whose sides are 0.20 m long. Calculate the magnitude and direction of the net electric force on each spehere. i used this: (K)Cos30((4.0*10-6)*2)/(0.2*2) and i get 3.1 ...
January 1, 2011

Science 6th grade
What is the best way to tell a chemical change has taken place? 1. The matter changes color 2. The mixture separates into layers 3. The composition chnages
December 30, 2010

finance
Harvard Group Case Analysis Foreign Exchange Hedging Strategies at General Motors: Transactional and Translational Exposures
December 19, 2010

11th grade math
Using the formula 4.9t^2... A object is dropped how long will it take it to fall 92 meters
December 16, 2010

chemistry
my moth balls froze at 54 degrees celsius, what kind are they?
December 15, 2010

business comunication
write an application in response to an advertisement in the daily dawn for the post of manager hrm in sony electric lahore
December 6, 2010

HISTORY
what is the official currency of the united states?
December 2, 2010

algebra
set up an equation, slope-intercept might help!
December 2, 2010

physics
db = 10log(p2/p1) = 5. 10log(p2/p1) = 5, Divide both sides by 10: log(p2/p1) = 0.5, p2/p1 = 10^0.5 = 3.16.
December 1, 2010

statistics
an experiment consists of 4 tosses of a coin.denoting the outcomes HHTH,THTT,..and assuming that all 16 outcomes are equally likely, find the probability distribution for the total number of heads.
November 21, 2010

vocab
intermenttently what does this word mean
November 19, 2010

language arts
thanks
November 19, 2010

language arts
What is the sense of the word "starts" in the sentence below? By doing this she starts something she did not know was going to happen. Is the answer intermenttently?
November 19, 2010

math
The longest steel arch bridge is the new river gorge near fayetteville,west virginia. write an inequality that describes the length in feet ,1, of every other steel arch bridge. the new river gorge bridge is 1700 feet long.
November 16, 2010

Statistics
Assume a population of any 4 numbers(suppose: 4,8,15,19). Select a random sample of size 2 with replacement from the population. List all the possible samples and their corresponding values of x̄ “x-bar” and then find the probability distribution of “X-bar...
November 16, 2010

chemistry
A sample of carboxylic acid is added to 50.0 mL of 2.27 M NaOH and the excess NaOH required 28.7 mL of 1.86 M HCl for neutralization. How many moles of NaOH reacted with the carboxylic acid?
November 11, 2010

12 Math
Graph the results of a coin toss: Toss Coins 0 20 1 12 2 5 3 1 4 0 State an equation that best fits the results (use n to represent the number of the toss). What physical phenomenon does this model? I was able to graph this, I just do not understand how to write the equation, ...
November 10, 2010

language arts
ill try
November 8, 2010

language arts
i just remembered it was main idea, purpose, and intent
November 8, 2010

language arts
thank you
November 8, 2010

language arts
what are three major parts of a summary?
November 8, 2010

Math
collect like terms and substitute 0for y? i think im just now doing this in my senior year in middle school algebra1
November 8, 2010

pre algebra
try to set up an equation im in algebra 2 so i may be able to help you
November 8, 2010

geometry
are the sides decimal?
November 8, 2010

pscyhology
technolly no one can tell you becuase its a test but lets just say its not a test they all look right
November 8, 2010

math
Hint: set up an equatoin
November 8, 2010

Graph help!
Sketch y= -(1/4) (2)^(x-4)+5 I know that the basic equation is y=2^x so is the graph translated 4 units right, vertically stretched by a factor of (1/4), reflected on the x-axis and translated up 5?
November 8, 2010

check math question
Thank you!
November 8, 2010

check math question
Given y=2^x Predict the equation for the graph that has been reflected in the y-axis, given a vertical stretch by a factor of 5, translated 2 units right and 5 units down. I have: y= -5 (2) ^ (x-2) - 5 Is this correct?
November 8, 2010

Graphing
Sketch y= -(1/4)(2)^(x-4)+5 by first including a table describing its major features.
November 8, 2010

Math Graph
Sketch y= -(1/4)(2)^(x-4)+5 by first including a table describing its major features.
November 8, 2010

math
In a Geometric progression the sum of its first 4 term is equal 15, and the sum of the next term is equal to 15/16. find its first term and its common ratio
November 5, 2010

math
in an arithmetic progression the 50th term is equal to 3, and the sum of the first 8th is equal to 23. find the first term and the common difference
November 5, 2010

math
a rubber ball fell from a high of 16 feet and then its rebounded until it rested, such that each time it rebounded to a high =1/2 the high rebounded to previouslly a) find the high rebounded to after the 10th term b)find the distance cover by the ball before it rested
November 5, 2010

math
If the sum of the first and the second terms of an infinite Geometric progression is equal to 3/8, and the sum of its term is equal to 1/2. find the common ratio of the first term of the progression
November 5, 2010

math
in a Geometric progression the sum of the first and the second terms is 90 and the sum of the second and the fourth terms is equal to 30.find the sum of the first 8th term in the progression
November 5, 2010

math
find the sum of the first 8th term of the Geometric progression, 1,3,9,27
November 5, 2010

math
find the sum of the 20th term a=6 and r=2/3
November 3, 2010

Math
27
November 2, 2010

Math
My ones digit is 5 more than the tens digit. i am greater than 25 and less than 35.
November 2, 2010

Calculus - integration
integration1-e integration 0-lnx y dy dx
November 1, 2010

graphing
How do you graph y= -log (base 5)(-x)? The written question is: Sketch above equation by first describing the transformations performed on the equation y= log (base 5)(x) And what is the inverse function? x=log (base 5)(y)?
November 1, 2010

Chemistry
and the Ksp as well im so lost! :(
November 1, 2010

Chemistry
what is the solubility of Pb(NO3)2, PbCl2, PbCrO4, and PbS from highest to lowest
November 1, 2010

log equation graph
How do you graph y= -log (base 5)(-x)? The written question is: Sketch above equation by first describing the transformations performed on the equation y= log (base 5)(x) And what is the inverse function? x=log (base 5)(y)?
November 1, 2010

Simplify exponents
(x^ a+b) ^ (a-b) / (x^a-2b) ^ (a+2b)
November 1, 2010

log graph
How do you graph y= -log (base 5)(-x)? The written question is: Sketch above equation by first describing the transformations performed on the equation y= log (base 5)(x) And what is the inverse function? x=log (base 5)(y)?
November 1, 2010

equation of exp function
What equation has the following features: It has the x-axis as an asymptote and it passes through (0, -1), (-1,-3) and (-2,-9)?
November 1, 2010

Simplify exponents
Sorry! (x^ a+b) ^ (a-b) / (x^a-2b) ^ (a+2b)
November 1, 2010

Simplify exponents
How do you simplify this equation: (x^a+b)^a-b / (x^a-2b) ^ a+2b
November 1, 2010

neg exponents
How do you write: -1/9 x^-1 with a positive exponent? also, -5 x^-2 ??
November 1, 2010

inverse equation
The same equation, just simply switched: if you have x+y= b, the inverse is y+x=b, which is the same thing and therefore its own inverse? Thank you!
November 1, 2010

inverse equation
How is any equation of the form y= -x + b its own inverse?
November 1, 2010

logs 3
How do you create a table to graph log (3/2) x ???
November 1, 2010

Richter scale question
I'm sorry, I'm still confused. Is it something like log(2) 6.1??
November 1, 2010

Richter scale question
I was not given any information regarding these factors, I wrote out the question I was given
November 1, 2010

Richter scale question
An earthquake registers 6.1 on the richter scale. What is the rating on an earthquake twice as powerful? I know: M=I/Io Then what do you do?
November 1, 2010

logs 2
How do you solve log(5) 20 + log (5) 10 - 3log(5) 2?
November 1, 2010

logs
How do you solve: log (1/3) 1 ?
November 1, 2010

Advanced Functions 2
I'm sorry for not using grouping symbols! You are correct, the exponents are (a-b) and (a-2b)
November 1, 2010

Advanced Functions 2
How do you simplify (x^a+b)^a-b / (x^a-2b) ^ a+2b
November 1, 2010

Advanced Functions
How do you write -1/9 x^-1 with a positive exponent? also, -5 x^-2 ??
November 1, 2010

physics
A cart starts from position one with a velocity of 17.0 m/s. Find the speed of the cart at positions 2 and 3 ignoring friction. will the cart reach position four? position 2= 12.0 m high position 3= 2.0 m high 4= 20.m high
October 26, 2010

College Physics
A 75.0 kg ladder that is 3.00 m in length is placed against a wall at an angle theta. The center of gravity of the ladder is at a point 1.20 m from the base of the ladder. The coefficient of static friction at the base of the ladder is 0.800. There is no friction between the ...
October 25, 2010

cuyamaca
Eddings Company had a beginning inventory of 400 units of Product XNA at a cost of $8.00 per unit. During the year, purchases were: Feb. 20 600 units at $9 Aug. 12 300 units at $11 May 5 500 units at $10 Dec. 8 200 units at $12 Eddings Company uses a periodic inventory system...
October 19, 2010

math
another way is to prime factorize each number and take the highest power of each prime and multiply them together. For 8= 2^3 or 2x2x2 for 12=2^2x3 or 2x2x2 for 15=3x5 by taking the highest power of each prime and multiplying together we get our solution: 2^3x3x5 or 2x2x2x3x5 ...
October 14, 2010

math
how do you find the answer for 5/16 +3/35=
October 10, 2010

science
A 4.0 kg box is raised from rest a distance of 6.0 m by a vertical force of 110 N. (a) Find the work done by the force. (b) Find the work done by gravity. (c) Find the final kinetic energy of the box.
October 10, 2010

science
A 4.0 kg box is raised from rest a distance of 6.0 m by a vertical force of 110 N.
October 10, 2010

Statistics
B IS SMALLEST C IS GREATER VARIATION
September 26, 2010

Physics
A 6.0 kg block,starting from rest, slides down a frictionless incline of length 2.0 m. When it arrives at the bottom of the incline its speed is vf. At what distance from the top of the incline is the speed of the block .5 vf
September 20, 2010

Physics
A 6.0 kg block,starting from rest, slides down a frictionless incline of length 2.0 m. When it arrives at the bottom of the incline its speed is vf. At what distance from the top of the incline is the speed of the block .5 vf
September 20, 2010

math
312
September 16, 2010

Physics
A boat that can travel at 4.0 km/hr in still water crosses a river with a current of 1.8 km/h. at what angle must the boat be pointed upstream to travel straight across the river? Confused on how to even set it up!
September 12, 2010

11th grade
The base of a pyramid is 10 cm high is the triangle shown. Find the volume of the pyramid. The hieght/leg of the traingle is 4 the base/leg is 6 and the hypothnues is 7.21
September 5, 2010

Algebra
10-foot ladder leans against an 8-foot wall. How far from the wall should the foot of the ladder be placed so that the top of the ladder will be exactly at the top of the wall?
August 4, 2010

College physics
A thin glass rod is submerged in oil. What is the critical angle for light traveling inside the rod?
July 30, 2010

College physics
A student has built a 20-cm-long pinhole camera for a science fair project. She wants to photograph the Washington Monument, which is 167 m (550 ft) tall, and to have the image on the film be 5.0 cm high.
July 30, 2010

stats
A financial institution wishes to estimate the mean balances owed by its credit card customers. The population standard deviation is estimated to be $300. If a 98 percent confidence interval is used and an interval of ±$75 is desired, how many cardholders should be ...
July 7, 2010

marketing opportunity cost
Maurice receives $100 as a birthday gift. In deciding how to spend the money, he narrows his options down to four choices: Option A, Option B, Option C, and Option D. Each option costs $100. Finally he decides on Option B. The opportunity cost of this decision is __________. A...
July 7, 2010

stats
Hess, Inc. sells a single product with a contribution margin of $12 per unit and fixed costs of $74,400 and sales for the current year of $100,000. How much is Hess’s break even point?
July 7, 2010

career
i think i would do the same thanks
May 24, 2010

career
If two jobs are upon you which one do you take the more sucessful one which you do not like the actions taking place or the less sucessful one which you kinda like.
May 24, 2010

world history
thank you you're awesome
May 24, 2010

world history
Who was the Columbian Exchange named after and why?
May 24, 2010

AED 204
rayna,try something that you think is a problem in your school that can relate to this.
May 24, 2010

math 7th grade
A(-3,4) ---> A'(3,4) B(-5,2) ---> B'(5,2) im a seventh grade math teachers daughter i should know
May 24, 2010

Statistics
an experiment consists of 4 tosses of a coin.denoting the outcomes HHTH,THTT,..and assuming that all 16 outcomes are equally likely, find the probability distribution for the total number of heads.
May 19, 2010

Literature
give 5 differences and 3 similarities between plays and novels
May 18, 2010

Physics
Two charged smoke particles exert a force of 4.2x10^-2 N on each other. What will be the force if they are moved so they are only one eighth as far apart? F= 4.2x10^-2 N K= 8.99x10^9 e= 1.6x10^-19 Do I solve for r even though they're asking me to find the force?
May 14, 2010

Intermediate Accounting
I had a problem with this question too, do a search for Ch6 since they won't let me post websites here. Look at the bottom of the examples and I think it will make it a little more clear.
May 11, 2010

maths
consider the quadratic functon y=-3(x-1)(x+2)
April 29, 2010

Physics 100
A bat flying in a cave emits a sound and receives its echo 0.25 s later. How far away is the cave wall?
April 25, 2010

fc college
Suppose you took loan from a bank of amount 800£ at 8% interest compounded semi-annually for three years. Find the compound interest.
April 23, 2010

trig
Verify the identity sin 3x cos 3x = 1/2 sin 6x can you show step by step please
April 19, 2010

Langusge Arts
Can you find 3 metaphors and 10 alliterations in this poem? THE Witch 1.She comes back night, in fearsome flight, 2. In garments black as pitch, 3.The queen of doom upon her broom, 4.The wild and wicked witch, 5.A cackling crone with brittle bones 6.And desiccated limbs, 7.Two...
April 14, 2010

--------
Using the following letters once, what word can you make: A,E,M,R,S,S,T.
April 7, 2010

language arts/research paper topic
i myself need a third idea to do a research project on as a 7th grade advanced english student so far i have abusive teenage relationships , and anastasia romanov
April 6, 2010

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