Monday

August 31, 2015
Total # Posts: 1,149

**Physics**

A(n) 563 kg elevator starts from rest. It moves upward for 3.18 s with a constant acceleration until it reaches its cruising speed of 1.96 m/s. The acceleration of gravity is 9.8 m/s 2 . Find the average power delivered by the elevator motor during this period. Answer in units...
*December 20, 2012*

**Help Please!!Edu**

When attachment capacity develops normally, the child gets pleasure from interacting with other people. The degree of pleasure is related to the degree of attachment-pleasing a parent brings more pleasure than pleasing a stranger. It is this very property that helps parents ...
*December 16, 2012*

**Help Please!!Edu**

what does research show about the child's relationship with the primary parental figure when the child has additional attachments to other people?
*December 16, 2012*

**Factors**

What multiplication fact can be found by using the arrays for 2×9 and 5×9?
*December 12, 2012*

**Math**

a store has 8 boxes each of red and black pencils. 4 boxes of red pencils and 6 boxes of black pencils are sold. how many pencils are left?
*December 10, 2012*

**English**

What does the adage "Never declare your physician your heir" mean?
*December 9, 2012*

**algebra**

y - 2 = -2(x - 3)
*December 9, 2012*

**English **

For an essay for my honors English class, I am comparing the character of Roger Chillingworth to a knife. While I do have some ideas to write about, do you guys have any tips on ideas I could use? More importantly, to those who have read the book, what type of knife do you ...
*December 2, 2012*

**math**

Its actually 65!
*November 28, 2012*

**factors**

Is 25 a multiple of 5? How do u know?
*November 26, 2012*

**factors**

How do u know that 5 is a multiple of 25?
*November 26, 2012*

**Factors**

1•How can adding doubles help you to multiply by 2? Give an example. 2•If the ones digit of a number is greater than 1 is 0, what factor or factors must that number have? 3•How to u know that 5 is a multiple of 5?
*November 26, 2012*

**physics**

An engine with an output of 233.0 W has an efficiency of 36.0 %. It works at 8.00 cycles/s. How much heat is rejected each cycle? * I found that work done per cycle is 29.1 J. Im not sure what to do next
*November 18, 2012*

**Problem solving**

Look at the number 13,15,19,25 Describe the pattern.
*November 14, 2012*

**ss**

how did kites affect people, cultures and economies
*November 14, 2012*

**Math**

Identify the property or rule shown by each number sentence: 5 * (2*4) = (5*2) *4
*November 13, 2012*

**Calculus**

The critical number of the function f(x)=6xlnx is x=
*November 9, 2012*

**Physics**

A line of identical train cars collide inelastically. (They couple.) Three carts are initially coupled and moving at speed v: the rest are stationary. The three moving cars hit a fourth, then those four hit a fth, and so on. This continues until the speed of the "...
*November 1, 2012*

**soicial studys help plz**

1. b 2. d 3. c
*October 22, 2012*

**Chemistry**

What volume of a 0.50 M solution of H2SO4 is required to completely neutralize 3.0 grams of NaOH? Write the equation.
*October 8, 2012*

**english**

Which sentence is correct?Select one of the options below as your answer: A. One can never have two many friends. B. One can never have too many friends. C. One can never have to many friends.
*October 5, 2012*

**Algebra**

A jar contains red, blue and yellow marbles.The number of red marbles is ten more than the number of yellow marbles and the number of blue marbles is double the number of yellow marbles. If the probability of choosing a yellow marble is one-fifth , how many marbles are in the ...
*October 4, 2012*

**Statistics**

Let X1,...,Xn be a sample from the N(0, sigma^2). 1) Find the method of moment estimator of sigma^2 2) Find the MLE estimator of sigma^2
*October 1, 2012*

**Finance**

1.BAC is considering an issue of preferred stock. The dividends are 8.12% of the $25 par value. a.If the current price is $26.25 per share, what is the return on the preferred stock? b.Suppose the preferred stock will mature in 20 years. If the price is $26.25 per share, what ...
*September 30, 2012*

**Finance**

1.You buy a SML Bond for $980. The bond has a face value of $1000 and an annual coupon rate of 8%. There are 5 years left until maturity. Because of a special delivery by the stork, you decide to sell the bond at the end of year 2 for $1050. What was your return? Why does this...
*September 30, 2012*

**Physics**

An outfielder throws a 0.145 kg baseball to the shortstop with a speed of 30 m/s at an angle of 20 degrees above the horizontal. How far does the ball travel? (Assume the shortstop catches it at about the same height that the outfielder throws it.)
*September 27, 2012*

**Phamacy math**

One teaspoonful diluted to a quart results in a 1/5000 solution. What is the amount of potassium permanganate in grams required to fill this prescription?
*September 21, 2012*

**Finance**

1.Tank Industries Washers expects to pay the following dividends over the next 4 years: $2.50, $3.20, $4.75 and $5.20 respectively (starting at time 1). a.After year 4, the firm expects a constant growth rate of 3%. If investors require 11%, what is the current share price? b....
*September 19, 2012*

**chem**

Aqueous sodium chloride and aqueous sulfurous acid are formed by the reaction of aqueous sodium sulfite and aqueous hydrochloric acid . write the balanced equation?
*September 18, 2012*

**Math**

Yes I was thinking the same thing. Wasn't too sure. Thanks.
*September 14, 2012*

**Math**

Which is greater, the greatest whole number with 5 digits or the least whole number with 6 digits?
*September 14, 2012*

**Chemistry - Please help!**

Hey i m not getting how you did the last part how did you solve for this equation 2.8*10^(-18) = (3x)^3 * (x+0.24) what was your answer
*September 8, 2012*

**5th grade religion**

Do members of. JVC work?
*September 5, 2012*

**math**

the highway doesnt need fence its already fenced can someone pls help?
*September 3, 2012*

**math**

A rancher with 7000 yds of fencing wants to enclose a rectangular field that borders a straight highway and then wants to devide it into two plots with a fence parellel to the highway. If no fence is needed along the highway, what is the largest area that the farmer can enclose?
*September 3, 2012*

**chemistry**

A 28.6 g of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 10.1 grams. What was the percent iron in the sample of ore?
*August 30, 2012*

**chemistry**

A 33.8 g sample of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 20.7 g. What was the mass of iron in the sample of ore?
*August 30, 2012*

**chemistry**

An ore contains Fe3O4 and no other iron. The iron in a 38.8-gram sample of the ore is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 25 g. What was the mass of Fe3O4 in the sample of ore?
*August 30, 2012*

**chemistry**

An ore contains Fe3O4 and no other iron. The iron in a 27.07 gram sample of the ore is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 21.9 grams. What was the percent Fe3O4 in the sample of ore?
*August 30, 2012*

**chemistry**

The reaction of 9.3 grams of ﬂuorine with excess chlorine produced 4.1 grams of ClF3. What percent yield of ClF3 was obtained?
*August 30, 2012*

**chemistry**

Two liquids of different densities (ρ1 = 1500 kg/m3, ρ2 = 500 kg/m3) are poured together into a 100 L tank, filling it. If the resulting density of the mixture is 800 kg/m3, find the respective masses of the liquids used.
*August 29, 2012*

**engineering**

A steel cylinder has a volume of 0.26 L and holds 4 kg of water at 25˚C and 200 kPa. (a) Find the total mass and total volume of the system (cylinder + water). (b) Give the values for two EXTENSIVE properties and two INTENSIVE properties of the water.
*August 29, 2012*

**biology**

She is none of those names she i saying the truth it is cheating im only on here to check my answers so she dont deserve to be called that so you should back off bob
*August 24, 2012*

**physics**

A baseball is thrown horizontally off a cliff with a speed of 11 ms^-1. What is the vertical distance, to the nearest tenth of a meter, that the ball has fallen after 4.8 seconds?
*August 22, 2012*

**english**

which of the following contributes most to the mystery of "An occurrence at owl creek bridge? A) the breaking from the confeeracy B) for spying on Union activities C) for planning against the enemy D) for refusing to fee union soldiers I think the answer is c but not sure
*August 20, 2012*

**Physics**

John is correct
*August 19, 2012*

**English 11**

I agree with jenne it is c
*August 13, 2012*

**statistics**

oh nevermind, i get what you are saying :) would you recommend that i do two different groups of mean and variance, one group is for having malaria, the other for not?
*August 9, 2012*

**statistics**

would i therefore need to be doing sigma = square root of [np (1-p)]?
*August 9, 2012*

**statistics**

Q) 75% of the population in Guinea, Africa is infected with malaria. Suppose a physician sees 6 patients in a given hour. Assuming these conditions are met, find the mean and standard deviation of the distribution. Help please!
*August 9, 2012*

**physics**

In a hydraulic piston, the small piston has a diameter of 2cm and the large piston has a diameter of 6m. How much more force can the larger piston exert compared with the force applied to the smaller piston?
*August 6, 2012*

**Math **

Your municipality withdraws 10,000 gallons per day from an aquifer that originally held 1,000,000 gallons. The recharge rate to the aquifer is 2,000 gallons per day. Determine how long it will take before the aquifer is depleted
*August 2, 2012*

**Math (precalculus)**

A rectangle has one corner in quadrant I on the graph of another at the origin, a third on the positive y-axis, and the fourth on the positive x-axis. Find the maximum area of the rectangle.
*June 27, 2012*

**programming Please respond**

you are rude to say that I have to change my career to adminstarotor. That is not very nice.
*June 20, 2012*

**programming Please respond**

input a list of positive numbers terminated by 0 into a array. find the mean of the numbers in the array and output the result. use a subprogram to input numbers a function to find the mean and a subprogram to output the result.
*June 20, 2012*

**programming**

input a list of positive numbers terminated by 0 into a array. find the mean of the numbers in the array and output the result. use a subprogram to input numbers a function to find the mean and a subprogram to output the result.
*June 20, 2012*

**math**

The following sequence of figures begins repeating in the fifth figure. The fifth figure has 2 squares, 2 triangles, and 1 rhombus. How many triangles will there be in the 176th figure?
*June 13, 2012*

**physics**

a motorisrt accelerates their car to 36m/s before realising they are over the speed limit and decelerates to 32m/s. calculate the distance traveled
*June 7, 2012*

**business**

1. An auto manufacturer negotiates a deal to have its cars appear in a Hollywood film. This is an example of A. publicity. C. media placement. B. product placement. D. image exposure. 2. To affect market _______, a company’s framework could be geographic, demographic, ...
*June 6, 2012*

**physics**

Two crates A and B connected together by a light rope are pulled along a factory floor by an applied force, F. Crate A has a mass of 50 kg and the coefficient of friction (μ) between crate A and the floor is 0,25. Crate B has a mass of 35 kg and μ between B and the ...
*June 3, 2012*

**Math**

A Company makes and sells sailboats. The company's cost function in thousands of dollars is C(x)=2x+20, and the revenue function in thousands of dollars is R(x) =4x, where x is the number of sailboats. Evaluate and interpret C(5).
*May 29, 2012*

**Physics**

How do I make calculations for a toy hovercraft?
*May 20, 2012*

**Physics**

How do I make calculations for a toy hovercraft?
*May 20, 2012*

**math 6th grade**

write the rule anf find the missing input. input out put 0 5 3 14 x 32
*May 7, 2012*

**math**

find the terms and leave the coefficients as factorials. Term with b^8 in (a + b^2)^10
*May 7, 2012*

**math**

Simplify the following expression. (n-1)!/n!
*May 4, 2012*

**physics**

5.16*10^8 for Mastering Physics
*April 28, 2012*

**English Helppppp**

a persuasive argument that will promt your college to offer a summer block of cources that deal exclusively with current trends in the career field in which you are pursuing a degree, or in a field in which you have a keen interest. ok i plan to write about fashion designing ...
*April 25, 2012*

**chemistry**

saADFFF
*April 25, 2012*

**chemistry**

1232
*April 24, 2012*

**english**

gfhcgc
*April 23, 2012*

**math**

Area A sequence of smaller squares is formed by connecting the midpoints of the sides of a larger square. (a) If the area of the largest square is 1 square unit, determine the first five terms of a sequence that describes the area of each successive square. (b) Use a formula ...
*April 19, 2012*

**Essay (Please proofread) I appre**

i appreciate all the help, these were quality suggestions that will help my paper sound better. Thanks for all your help!
*April 17, 2012*

**Essay (Please proofread) I appre**

New Orleans Emergency Operations Plan FY12 According to, The Federal Response to Hurricane Katrina: Lessons Learned, Hurricane Katrina prompted an extraordinary national response that included all levels of government—Federal, state, and local—the private sector, ...
*April 17, 2012*

**english**

can i submit essays here to be reviewed? if so where do i do that at? Thanks
*April 17, 2012*

**Math: Derivatives**

How did you get the answer? I don't quite understand. Thanks
*April 8, 2012*

**Math: Derivatives**

Use the shortcut rules to mentally calculate the derivative of the given function f(x) = −x + (3/x) + 1 After deriving it, I got -1+(0/1)+0= -1 But this answer is wrong, and I don't know why. Thank You
*April 8, 2012*

**Calc 1 (Optomization)**

A rectangular storage container with an open top is to have a volume of k cubic meters. The length of its base is twice its width. The material for the base costs $6 per square meters and the material for the sides costs $10 per square meter. Find the dimensions of the ...
*April 6, 2012*

**math**

There are 15 students in Marcelo chess club. There are 2 times as many boys as girls . Howm many girls are in the club?
*April 5, 2012*

**AP Chem**

Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.054 moles of sulfuric acid is mixed with water to make 667 milliliter of solution,what is the molarity of H+? Answer in units of M doing mole/liter doesn't work
*April 1, 2012*

**Math**

Find the equation of the tangent to the graph at the indicated point. f(x) = x^2 − 1; a = 3 and f(x) = x^2 − 8x; a = −9 whats the difference between 1 and 8x. What formula do I use and how should i solve both of these problems? Thank you
*March 31, 2012*

**physics**

A vertical tube with a tap at the base is filled with water, and a tuning fork vibrates over its mouth. As the water level is lowered in the tube, resonance is heard when the water level has dropped 18 cm, and again after 54 cm of distance exists from the water to the top of ...
*March 28, 2012*

**math**

would you divide 65 by 3 to find the lenght
*March 28, 2012*

**math**

a bicycle wheel has a circumfrence of 65in what can i do to find the length of one spoke
*March 28, 2012*

**Physics **

Tom the train and Dan are involved in an elastic collision. A 2.5 kg Tom is, at rest but is approached head-on by a 5.0 kg Dan moving at 0.60 m/s. The force-separation graph for the ensuing collision is given: the picture of the graph is found here: i54.tinypic (dot) com/...
*March 25, 2012*

**statistics**

Show the work for 750 x 23%, how do you do it?
*March 19, 2012*

**physics**

The system shown below consists of a block of mass M = 4.4 kg resting on a frictionless horizontal ledge. This block is attached to a string that passes over a pulley, and the other end of the string is attached to a hanging block of mass m = 1.9 kg. The pulley is a uniform ...
*March 16, 2012*

**Computer Science (java1)**

can someone please tell me the equation for compshift? double Angle = 45.0; double AngleRadians; double ComptonShift ; //calculations AngleRadians = Math.toRadians(Angle); ComptonShift = Helpppp here
*March 14, 2012*

**chemistry**

an ammonia molecule, NH3 travels at about 658 m/s at room temperature. How fast would a molecule of hydrogen sulfide, H2S travel under the same conditions?
*March 13, 2012*

**Math**

6ab + 4bc - 3bc + bc
*March 12, 2012*

**English 11**

Roscoe is correct
*March 12, 2012*

**Math: Limits**

Estimate the limit numerically. lim as x→(approaches to)5 6e^(x − 5) How do I solve it? I don't plug in the numbers do I? Then how do I do this as well? What should I do to solve lim x→(approaches to)− infinity 6xe^(7x) Do I disregard the other ...
*March 10, 2012*

**english 11**

Connexus answers d,b,d,c,d
*March 9, 2012*

**critical thinking**

Identify mission-related environmental risks?
*March 8, 2012*

**physics**

You throw a 134 g ball straight up to a height of 43.0 m. (a) Assume that the displacement of your hand is 0.70 m as you throw the ball straight up. How long is the ball is in your hand? (b) Calculate the average force exerted by your hand while you are throwing it.
*March 7, 2012*

**physics**

A physics student playing with an air hockey table (a frictionless surface) finds that if she gives the puck a velocity of 5.30 m/s along the length (2.80 m) of the table at one end, by the time it has reached the other end the puck has drifted 5.19 cm to the right but still ...
*March 4, 2012*

**math**

a flagpole cast a shadow that is 26ft long. At the same time, a yardstick cast a shadow that is 4ft long. How tall is the flagpole
*March 4, 2012*

**Math**

Real rate = 11-3.8 = 7.2% 1,500,000/(1+0.072)^40= 92960.80 To check this is correct you can do: 92960.80*(1+0.072)^40= 1,500,000
*February 29, 2012*

**Pre-Cal**

If the interest on a long-term Canadian(3/8%) investment is compounded continuously, how long will it take the value of an investment to triple? (Give the answer correct to two decimal places.) Got 19 years--its wrong, can't find reason. Thanks.
*February 29, 2012*

**college**

Solve the problem. Round to the nearest cent. Joan wants to have $250,000 when she retires in 27 years. How much should she invest annually in her annuity to do this if the interest is 7% compounded annually? A) $1861.10 B) $3356.43 C) $2672.15 D) $937.86
*February 27, 2012*