Tuesday

March 31, 2015

March 31, 2015

Total # Posts: 644

**Physics**

Two charges A and B are fixed in place, at different distances from a certain spot. At this spot the potentials due to the two charges are equal. Charge A is 0.24 m from the spot, while charge B is 0.37 m from it. Find the ratio qB/qA of the charges.
*June 13, 2012*

**Sceince**

The drawing shows an edge-on view of two planar surfaces thatintersect and are mutually perpendicular. Surface 1 has an area of 1.7 m^2, while surface 2 san area of 3.2 m^2. The electric field in the drawing is uniform andhas a magnitude of 250 N/C. Find the electrical flux ...
*June 10, 2012*

**Physics 1**

Three charges are fixed to an xy coordinate system. A charge of +16C is on the y axis at y = +3.1 m. A charge of -16C is at the origin. Lastly, a charge of +55C is on the x axis at x = +3.1 m. Determine (a) the magnitude and (b) direction of the net electrostatic force on the ...
*June 9, 2012*

**Physics**

The drawing shows an edge-on view of two planar surfaces thatintersect and are mutually perpendicular. Surface 1 has an area of 1.7 m^2, while surface 2 san area of 3.2 m^2. The electric field in the drawing is uniform andhas a magnitude of 250 N/C. Find the electrical flux ...
*June 9, 2012*

**algebra**

if a stock price starts at $61 goes up $3, goes up $2, goes down $1, down $4, goes down $5 what is the stock worth
*June 1, 2012*

**Science-Physics**

One of the things that helped our understanding of radioactivity was the discovery of the electron in 1897. The 100th anniversary of this important discovery was celebrated widely in 1997. Explain why more people were aware of the 100th anniversary than of the original discovery.
*May 28, 2012*

**Geography**

how many states are surrounded by water?
*May 15, 2012*

**Physics 121**

The disk has mass 10kg and radius 0.25m. The rod has mass 5kg, length 0.5m and radius 0.05m. The rod is split down the middle and is hinged so that its two halves can lay flat against the disk. Suppose that the disk and rod are initially rotating at 3.0rad/s around the axis ...
*May 6, 2012*

**Statistics**

When fifteen vehicles were observed at random for their speeds (in M.P.H.) on a freeway, the following data were obtained. 61 53 57 55 62 58 60 54 62 60 59 66 55 54 63 Suppose that from past experience it may be assumed that vehicle speed is normally distributed with standard ...
*April 30, 2012*

**Chemistry**

Thank you so much for your help! I was able to follow your steps very well! Much appreciated DrBob222!
*April 29, 2012*

**Chemistry**

For the strong acids find the [H3O]and [OH] in a solution that is .785% HNO3 by mass (assume a density of 1.01 g/ml). If someone could offer step by step instructions, that would be terrific!
*April 29, 2012*

**Chemistry**

A solution contains an unknown mass of dissolved barium ions. When sodium sulfate is added to the solution, a white precipitate forms. The precipitate is filtered and dried and found to have a mass of 258 mg. What mass of baium was in the original solution? (Assume that all of...
*April 12, 2012*

**Chemistry **

Describe how you would prepare 2.00 L of an aqueous solution having a pH=3.60, if you had a supply of 0.100 M HCl available.
*April 12, 2012*

**Math**

A Sears Relvolving charge card has a monthly rate of 1.75%, the interest is a minimum of $.50 if the average daily balance is $28.50 less. Explain how this poilicy is beneficial to Sears.
*April 4, 2012*

**Physics**

Two disks are rotating about the same axis. Disk A has a moment of inertia of 4.53 kg·m2 and an angular velocity of +4.55 rad/s. Disk B is rotating with an angular velocity of -6.86 rad/s. The two disks are then linked together without the aid of any external torques, ...
*April 1, 2012*

**Physics**

The drawing shows two identical systems of objects; each consists of the same three small balls connected by massless rods. In both systems the axis is perpendicular to the page, but it is located at a different place, as shown. The same force of magnitude F is applied to the ...
*April 1, 2012*

**English **

Is this a correct sentence Be careful whom you tell.
*March 27, 2012*

**accounting**

Part 5 Cash Budgeting Landis Company has the following sales forecasts for the selected three-month period in the current year: Month Sales April $12,000 May 7,000 June 8,000 Seventy percent of sales are collected in the month of the sale, and the remaining balance is ...
*March 25, 2012*

**Science/Chemistry**

Molarity = mol/ L = 0.0025 / 0.00368 L = .679 M
*March 21, 2012*

**algebra**

The period of a pendulum is the time it takes to swing from left to right and back again. The period T seconds, of a pendulum is directly proportional to the square root of its length, Lcm. When L=25, T=1 Find a formula for T in terms of L.
*March 20, 2012*

**Math**

Evaluate the expression below log 243 9
*March 19, 2012*

**english 11**

it said the answers are D D B A D B
*March 14, 2012*

**English 11**

Yeahp rosco
*March 12, 2012*

**algebra**

Which is the eighth term in the sequence an=-1/125(5^n-1)
*March 10, 2012*

**math**

Which is the eighth term in the sequence an=-1/125(5^n-1)
*March 10, 2012*

**Literature **

The best in this kind are but shadows" is A. Titania talking about men. B. Theseus talking about plays. C. Demetrius talking about the women he has loved in the past. D. Bottom talking about his fellow craftsmen.
*March 8, 2012*

**Chem 2**

The following system is at equilibrium with [N2O4] = 0.55 M and [NO2] = 0.25 M. If an additional 0.10 M NO2 is added to the reaction mixture with no change in volume, what will be the new equilibrium concentration of N2O4? N2O4(g) 2 NO2(g)
*March 5, 2012*

**Math**

Can you help simplify this expression. (x+x/3) divided by (x-x/6)
*February 28, 2012*

**math**

Can you help simplify this expression. (x+x/3) divided by (x-x/6)
*February 28, 2012*

**Algebra **

Can you help simplify this expression. (x+x/3) divided by (x-x/6)
*February 28, 2012*

**trig**

in this right trianlge ABC, m<c=90, m<a=63, and AB=10. if BC is represented by a, then which equation can be used to find a?
*February 28, 2012*

**trig**

solve for x log4 64+ log2 2 ________________ =x log3 81
*February 28, 2012*

**stats**

Web Results For: the value of the z-score in a hypothesis test is influenced by a vareity of factors. Assuming other variables are held constant, explain how the value of z is influenced by increasing the difference between teh sample mean and the original population mean
*February 28, 2012*

**ACC291**

The following stockholders' equity accounts arranged alphabetically are in the ledger of McGrath Corporation at December 31, 2011. Common Stock ($10 stated value) $1,500,000 Paid-in Capital from Treasury Stock 6,000 Paid-in Capital in Excess of Stated Value-Common Stock ...
*February 27, 2012*

**medical front office**

How does bookkeeping and banking affect the position of the Medical Assistant?
*February 25, 2012*

**Axia College **

Need help with solving the double equation problem. 3x + 2y = 3 9x - 8y = -2
*February 23, 2012*

**statistics**

Suppose IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. What percentage of the scores are above 130?
*February 23, 2012*

**Physics**

How much work is done by a girl weighing 450N while carrying a 2kg package up a 2m flight of stairs?
*February 16, 2012*

**Math**

If A, B, and C stand for different digits, and BA+AC=BCA, what digits do A, B, and C represent? Please Help!
*February 13, 2012*

**Math**

If A, B, and C stand for different digits, and BA+AC=BCA, what digits do A, B, and C represent? Please Help!
*February 13, 2012*

**Algebra **

Write an equation for the ellipse that satisfies the set of conditions. endpoint of major axis at ( 0, 10) and (0, -10) foci at (0, 8) and (0-8) Please help, I really don't understand how to do this
*February 12, 2012*

**accounting**

P4-2A The adjusted trial balance columns of the worksheet for Porter Company are as follows. PORTER COMPANY Worksheet For the Year Ended December 31, 2008 Adjusted Account Trial Balance No. Account Titles Dr. Cr. 101 Cash 18,800 112 Accounts Receivable 16,200 126 Supplies 2,...
*February 9, 2012*

**accounting**

Worksheet data for Goode Company are presented in E4-2. Instructions (a) Journalize the closing entries at April 30. (b) Post the closing entries to Income Summary and Retained Earnings. Use T accounts. (c) Prepare a post-closing trial balance at April 30. Cash 13,752 ...
*February 9, 2012*

**Accounting**

Worksheet data for Goode Company are presented in E4-2. Instructions (a) Journalize the closing entries at April 30. (b) Post the closing entries to Income Summary and Retained Earnings. Use T accounts. (c) Prepare a post-closing trial balance at April 30. Cash 13,752 Accounts...
*February 8, 2012*

**chemistry**

using the conversion of mass if the reactant has 4 atoms of calcium how many atoms of calcium will the product have?
*February 5, 2012*

**physics**

A rock dropped from an airplane falls for 13.6 seconds before hitting the ground. How far above the ground was the airplane when the rock was dropped?
*February 5, 2012*

**Social Studies**

I need a picture of Charles B. Brooks the inventor of the street sweeper. I can't find one anywhere; could you help me. I'm doing a project and need a picture of him.
*February 2, 2012*

**Physics**

An (63Kg) astronaut, floating alone in outer space, catches a 7Kg bowling ball traveling at 20m/s. The velocity of the astronaut and bowling ball after the catch is
*February 1, 2012*

**math**

A cricket produces 116 chirps per minute at 72 degrees Fahrenheit and 177 chirps per minute at 80 degrees Fahrenheit. Find a linear equation that models the temperature as a function of the number of chirps per minute .
*February 1, 2012*

**math**

mrsdryson is divding her collection of 52 glass bears into equal groups. she has 1 bear left over. how many did mrs.dryson make
*January 19, 2012*

**statistics**

what is the value of P(6,4)?
*January 17, 2012*

**algebra**

Find the future value of an ordinary annuity. Payments are made and interest is compounded as follows: R=600 7% interest compounded quarterly for 5 years I set this up as follows and still am getting the wrong answer: 500 (1.07)^5-1/0.07 Please help!!
*December 15, 2011*

**Psycholofgy**

d. conformity, compliance
*December 12, 2011*

**algebra**

find the size of each 5 payments made at the end of each year into a 6% rate sinking fund which produces 76000 at the end of 5 years
*December 7, 2011*

**physics**

Rhonda Vous, the 445N human cannonball, is shot from her cannon, leaving it at 18.0 m/s. How much work did the cannon do on her?
*December 7, 2011*

**Calculus**

A cylindrical water tank has a radius of 2 feet and a height of 6.0 feet. Compute the work done to pump the water out of a filled tank through the top. [The density of water is 62.4 lbs/ft3.]
*December 6, 2011*

**calculus**

Find the volume of the solid formed by revolving the region bounded by y=1-x, y=x-4, x=0 about x=7
*December 6, 2011*

**calculus**

The pdf describing the chance that a given insect will die at a particular age, x days, is f(x)=4.1x10^-2 xe^-.2x. What is the chance the insect will live between 2 and 4 days?
*December 6, 2011*

**calculus**

The base of a solid V is the region bounded by y=(x^2/64) and y=sq(x/8) Find the volume if V has square cross sections
*December 6, 2011*

**math**

4.Suppose John sells his house and earns a profit of $600,000. With the profit, he buys a 20 year annuity that earns 6.5% interest compounded monthly. What monthly payment will John get?
*December 5, 2011*

**Math**

3 ç (x - 2)11 dx = 1
*December 4, 2011*

**Math**

Find the arc length of y = x^4 from the origin to (1, 1). Answer in length units, correct to two decimal places, please.
*December 4, 2011*

**Math**

Revolve the region bounded by y = 4x and y = x^2 about the y-axis. In cubic units, the resulting volume is
*December 4, 2011*

**Calculus**

Compute the volume of the solid formed by revolving the fourth quadrant region bounded by y = x^2 - 1 , y = 0, and x = 0 about the line y = 9.
*December 4, 2011*

**Calculus**

Find the total area bounded by the curves y = x^3 and y = x^5 .
*December 4, 2011*

**Calculus**

Compute the volume of the solid formed by revolving the fourth quadrant region bounded by y = x^2 - 1 , y = 0, and x = 0 about the line y = 6.
*December 3, 2011*

**Pre Calc**

Find the volume of the solid formed by revolving the region bounded by y = 16 - x^2 and y = 0 about the x-axis .
*December 3, 2011*

**Calculus**

Find the volume, in cubic units, generated by revolving the region bounded by y = x3 , x = 0, and y = 8, around the line x = 7 .
*December 2, 2011*

**Calculus**

If f(x) = (cos x)(esin x ), then, correct to the nearest hundredth, f '(2.0) = The answers suppose to be 0.86 but i always get -1.83
*December 2, 2011*

**Calculus**

Find the colume, in cubis units, generated by revolving the region bounded by y=x^3 x=0 and y=8 around the line x=7
*December 2, 2011*

**Calculus**

Revolve the region bounded by y = 4x and y = x2 about the y-axis. In cubic units, the resulting volume is
*December 2, 2011*

**Calculus**

Revolve the region bounded by y=x and y=x^2 about the y axis. In cubic units, the resulting volume is?
*December 2, 2011*

**English **

Ms. Sue I just cannot figure what the subordinate clause would be in this sentence, Tom and Phyllis said they would pay our dog's boarding costs. Is it "said they"
*December 1, 2011*

**English **

Tom and Phyllis said they would pay our dog's boarding costs. What is the subordinate clause? Is it our dog's boarding costs
*December 1, 2011*

**Chemistry**

Write the full electron configuration for the ground state of each of the following: a. Ni b. Ni2+ I'm not exactly sure what to do here, please help!
*November 30, 2011*

**English **

I would like to learn more about my ancestors. Is the word " learn" the object of the prep. to and is the word "more" an adjective.
*November 14, 2011*

**English **

MY ancestors are Irish. Is Irish a predicate noun
*November 14, 2011*

**math**

tom family had three daughters and their ages added up to 11..the product is 24 how old are the children
*November 7, 2011*

**Calculus**

Thank you!
*November 3, 2011*

**Calculus**

a) Find the volume formed by rotating the region enclosed by x = 6y and y^3 = x with y greater than, equal to 0 about the y-axis. b) Find the volume of the solid obtained by rotating the region bounded by y = 4x^2, x = 1, and y = 0 about the x-axis. c) Find the volume of the ...
*November 3, 2011*

**Math**

Find the domain of the function. Show all work. 1 if -9 < or = x<-7 f(x)= Abs(x) if -7 < or = x<9 Sq root(x)if 9 < or = x < or=35
*October 25, 2011*

**English **

Why was poetry anthology named after O'Hara's poem "Sleeping On The Wing"
*October 23, 2011*

**algebra**

Use the compound interest formula A=P(1+r)^t and the given information to solve for r. A=9,000,000 P=80,000 t=40 I have done this problem over a over and still get the wrong answer.
*October 23, 2011*

**algebra**

a loan of 22,823 was repaid at the end of 12 months. What size repayment check (principal and interest) was written , if a 10.7 % annual rate of interest?
*October 23, 2011*

**Spanish-9th grade**

Could you please check if these are correct? Thank you- 1.¿Necesitas monedas para coleccionar monedas? Sí. Las necesito para coleccionar monedas. 2. .¿Necesitas el bate para jugar al tenis? No,lo necesito para jugar al tenis. 3. Me hablas? Sí, te ...
*October 17, 2011*

**calculus**

Find the equation of the line tangent to the graph of the given function at the point with the indicated x-coordinate. f(x)=(4 sqrt(x)+7)/(sqrt(x)+2); text( ) x=4
*October 14, 2011*

**math**

The demand for the video game is modeled by the logistic curve, where q(t) is the total number of units sold t months after its introduction. q(t)= 10000/(1+0.5 e**(-0.4t)) (a) Use technology to estimate q'(4) to the nearest integer. mark units per month (b) Assume that ...
*October 14, 2011*

**Calculus**

s(x)=log3(x^2+6x) find derivative?
*October 14, 2011*

**Calculus**

need derivative
*October 14, 2011*

**calculus**

t(x)=((x+4)^0.1-5x)^-5.1
*October 14, 2011*

**Calculus**

g(x)=(1)/(2e^(x)+4e^(-x))
*October 13, 2011*

**Physics**

Thanks :)
*October 8, 2011*

**Physics**

Let vector B = 8.8 m, 75 degrees counterclockwise from the vertical. a) Find the x- and y-components of vector B in the normal coordinate system (where x is a horizontal line and y is a vertical line...both intersect each other). b) Find the x- and y-components of vector B in ...
*October 8, 2011*

**trig**

Triangle PQR is congruent to P'Q'R. If PQ= x+y, P'Q'+10, Q'R'= 3x-y, and QR=14, then what is x and y?
*October 5, 2011*

**Physics**

A sprinter can accelerate with constant acceleration for 2.70 s before reaching top speed. He can run the 100-meter dash in 10 s. What is his speed as he crosses the finish line? Please show me all the steps to solving this problem. Thanks
*October 5, 2011*

**Science**

What are the surface area, volume, surface area:volume, and distance of diffusion for the following dimensions: 1 cm x 1 cm x 1 cm 2 cm x 2 cm x 2 cm 1 cm x 1 cm x 6 cm
*September 28, 2011*

**science**

for the three cubes shown below, determine their surface area, volume and surface area to volume ratio. Then circle the one you believe would be the most efficient and write a summary stating why. 1.5 cm x 1.5 cm x 1.5 cm .5 cm x .5 cm x 6 cm 3 cm x 2 cm x 2 cm
*September 28, 2011*

**world history**

What is the connection between the policy of laissez faire and natural economic laws?
*September 28, 2011*

**Algebra**

I can't get this problem, could you please help me? Solve each system of equations x+2y=12 3y-4z=25 x+6y+z=20
*September 25, 2011*

**chemistry**

A solution is made by adding 0.100 mole of ethyl ether to 0.841 mole of ethyl alcohol. If the vapor pressure of ethyl ether and ethyl alcohol at 20oC are 375 torr and 20.0 torr, respectively, the vapor pressure of the solution at 20oC
*September 23, 2011*

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