Sunday

January 25, 2015

January 25, 2015

Total # Posts: 1,092

**Physics**

Particles 1 and 2 have charge 20uC each and are held at separation distance d=1.50m. (a)What is the magnitude of the electrostatic force on particle 1 due to particle 2? Particle 3 of charge 20uC is positioned so as to complete an equilateral triangle. (b) What is the ...
*April 10, 2013*

**Math**

A recipe for fruit punch calls for 2 1/2 c of orange juice, 1 1/3 c of pineapple juice, and 1 3/4 c of soda water. If June makes 4 times the recipe, how many cups of fruit punch will she have?
*April 9, 2013*

**Chemistry**

7. A solution is prepared by dissolving 8.5 g NaHCO3 and 12.7 g Na2CO3 in 500.0 mL of water. Calculate the pH.
*March 20, 2013*

**Chemistry**

7. A solution is prepared by dissolving 8.5 g NaHCO3 and 12.7 g Na2CO3 in 500.0 mL of water. Calculate the pH.
*March 20, 2013*

**Chemistry**

Calculate the pH of a buffer solution containing 1.0 M ammonia (NH3 ; Kb = 1.8 x 10-5) and 1.0 M ammonium chloride (NH4Cl).
*March 20, 2013*

**Chem**

What is the maximum Cu2+ concentration possible in a solution that has a 7.4 E -5 M sulfide ion concentration without precipating CuS? For CuS, Ksp= 6.0 E -36
*March 17, 2013*

**Statistics**

A coin is tossed 10 times. What is the probability that the third head will apear on the tenth toss?
*March 14, 2013*

**algebra**

From a point on a straight road, John and Fred ride bicycles in opposite directions. John rides 10 miles per hour and Fred rides 12 miles per hour. In how many hours will they be 55 miles apart?
*March 13, 2013*

**Science**

What happens to make ice change into liquid and why does liquid water become a gas?
*March 13, 2013*

**Physics**

how far from the center of the earth would a person with a weight of 469N on earth have to be to have a weight off 55.4N?
*March 11, 2013*

**accounting**

Acme Corporation issued $650,000, 8%, bonds for $720,000. Was the market rate on the date of issue higher than, lower than, or equal to the stated rate of interest?
*March 5, 2013*

**accounting**

Acme Corporation issued $650,000, 8%, bonds for $720,000. Was the market rate on the date of issue higher than, lower than, or equal to the stated rate of interest?
*March 5, 2013*

**Geometry**

How do you find the apothem of a regular pentagon? Hexagon?
*February 28, 2013*

**Algabra 1**

Need help stuck on question. Find the range of f(x)=3g-5 for the domain (-1.5,2,4) A- (-8,10,-1,-1) B- (-9.5,1,7) C- (8,10,1,1) or D- (9.5,-1,-7)
*February 26, 2013*

**MATH- Algebra 2**

PRISM AND CYLINDER
*February 24, 2013*

**Pacific Union College**

Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 °C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 17.5 g of biphenyl in 28.8 g of benzene?
*February 24, 2013*

**math**

what is the area enclosed by x=sin(y) and x=(2Sqrt2/pi)y ?
*February 20, 2013*

**Science**

I guess, will I be able to compare hoe people remember numbers better with their eyes or ears?
*February 20, 2013*

**Science**

How do I draw a graph comparing eyes & ears. If you remember numbers better with your eyes or ears?
*February 20, 2013*

**physics**

F average= delta p/delta t delta p =MV2-MV1
*February 19, 2013*

**physics**

Romeo takes a uniform 13.7-m ladder and leans it against the smooth (frictionless) wall of the Capulet residence. The ladder's mass is 23.2 kg and the bottom rests on the ground 3.43 m from the wall. When Romeo, whose mass is 70 kg, gets 88.3 percent of the way to the top...
*February 17, 2013*

**physics**

Romeo takes a uniform 13.7-m ladder and leans it against the smooth (frictionless) wall of the Capulet residence. The ladder's mass is 23.2 kg and the bottom rests on the ground 3.43 m from the wall. When Romeo, whose mass is 70 kg, gets 88.3 percent of the way to the top...
*February 15, 2013*

**C code**

//INSTRUCTIONS //Your parser will read from input.txt //input.txt consists of a series inputs that you need to read. //each input is proceeded by a flag. //Each flag will be either I,C, or F. //I means int C means char F means float. //So for example //I 7963467 //means int ...
*February 13, 2013*

**Math**

Find the minimum and maximum possible areas of a rectangle measuring 6 km by 11 km.
*February 12, 2013*

**Math**

Runner A crosses the starting line of a marathon and runs at an average pace of 5.6 miles per hour. Half an hour later, Runner B crosses the starting line and runs at an average rate of 6.4 miles per hour. If the length of the marathon is 26.2 miles, which runner will finish ...
*February 12, 2013*

**Math**

A truck traveling at an average rate of 45 miles per hour leaves a rest stop. Fifteen minutes later a car traveling at an average rate of 60 miles per hour leaves the same rest stop traveling the same route. How long will it take for the car to catch up with the truck?
*February 12, 2013*

**Alegebra**

If a kayaker's speed while traveling upstream is 7 miles per hour and downstream is 4 miles per hour. What is the kayaker's speed in still water? What is the speed of the current?
*February 6, 2013*

**C code**

Write a .c file named calc that: - Takes arguments from the command line - Solves a simple math problem - Returns the result as an exit status calc.c: //this is the function that gets called when the executable is run. int main(int argc, char * argv[]){ //I've given you ...
*February 6, 2013*

**English**

What point is Tan making with the example of her mother and the hospital in Mother Tongue by Amy Tan 1990?
*January 28, 2013*

**biology**

1. discuss the mechanisms that organisms undergo to accomplish morphogenesis 2. Describe the contributions of drosophila and nematodes in advancing understandings of development
*January 27, 2013*

**Physics**

a tuning fork of frequency 500 Hz is rotating on the edge of a disk of radius 1.2 meters. (a) If the disk turns at a rate of 40 rev/min, what are the maximum and minimum frequencies heard by the listener? (b) To what positions of the tuning fork do these frequencies correspond?
*January 26, 2013*

**Physics**

Identical points on two harmonic waves with the same wavelength (.65 meters) and frequency are separated by a distance of .15 meters. What is the phase difference between the waves?
*January 26, 2013*

**Physics**

When speaker A is working the sound intensity at a particular location is 85 dB. When speaker B is working (without speaker A), it is 80 dB. What will it be if both speakers are working together?
*January 26, 2013*

**biology**

1. discuss the mechanisms that organisms undergo to accomplish morphogenesis 2. Describe the contributions of drosophila and nematodes in advancing understandings of development
*January 26, 2013*

**Math **

A certain car is about 100in. long and 60 in. wide. You plan to make a model of this car that is 9 in. wide. How long will your model be?
*January 22, 2013*

**Chem. **

What is the mass (in kilograms) of a cube of silver that measures 0.68m on each side, when the density of the sample is 10.5g/cm3
*January 20, 2013*

**Chem.**

What is the mass (in kilograms) of a cube of silver that measures 0.68 on each side, when the density of the sample is 10.5g/cm3
*January 20, 2013*

**Physics**

Three concentric rings and one point charge are in the same plane as shown in the above diagram. The linear charge densities of the rings are ë1 = 2.60nC/m, ë2 = -1.10nC/m, and ë3 = 2.20nC/m with corresponding radii of r1 = 86.0cm, r2 = 64.0cm, and r3 = 46.0cm. ...
*January 17, 2013*

**Physics**

A particle with mass m = 1.20g and charge q = 345ìC is traveling in the x-direction with an initial velocity of v0 = 68.0m/s. The particle passes through a constant electric field in the y-direction with magnitude |E| = 263N/C over a distance of d = 12.0m. (a) What is ...
*January 17, 2013*

**lang arts**

For the whole quick check the answers are B C C C
*January 17, 2013*

**Help please**

Paul Acorn maintains that the distinction between human and animal manipulation of the natural environment to create artifacts is: a. Technology b. the ethical application of technology c. Choice d. Creativity and adaptation
*January 16, 2013*

**Math**

What factors will give a product of 42? Show your work with repeated addition and with equal groups
*January 13, 2013*

**help plzzzzz**

Ok
*January 2, 2013*

**help plzzzzz**

Are y'all trying to bring me down
*January 2, 2013*

**help plzzzzz**

Please and that's all I know I know how to spell I am just rushing Leasson- lesson Is that better for you
*January 2, 2013*

**help plzzzzz**

I know how to spell I am jus rushing
*January 2, 2013*

**help plzzzzz**

Yes i meant teacher dont interupt while the parent and child is interacting greet the parent appropriately explain what you want the parent to do cleary explain the leasson dats all i no
*January 2, 2013*

**help plzzzzz**

Discuss the responsibilities a parent has to volunteer parents when these parents are invited to participate in learning activities. Include five responsibilities in your discussion and give an example of each.
*January 2, 2013*

**HELP PLZ MATH**

A recent article in the Myrtle Beach Sun Times reported that the mean labor cost to repair a color television is $90 with a standard deviation of $22. Monte's TV Sales and Services completed repairs on two sets this morning. The labor cost for the first was $75 and it was...
*December 31, 2012*

**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*

**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*

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