Thursday

October 27, 2016
Total # Posts: 101,576

**SchoolCraft**

A gas sample undergoes a reversible isothermal expansion. The figure gives the change ΔS in entropy of the gas versus the final volume Vf of the gas. The scale of the vertical axis is set by ΔSs = 68.4 J/K. How many moles are in the sample?

*June 1, 2016*

**language arts**

ghdtfgkv.hlj

*June 1, 2016*

**language arts**

Najaf xneleiisksownt

*June 1, 2016*

**language arts**

Which event from The Odyssey best highlights the idea that the ancient Greeks greatly disliked greediness?

*June 1, 2016*

**language arts**

Read the excerpt from The Odyssey. He saw the townlands and learned the minds of many distant men, and weathered many bitter nights and days in his deep heart at sea, while he fought only to save his life, to bring his shipmates home. But not by will nor valor could he save ...

*June 1, 2016*

**Physics**

Two speakers driven in a phase by the same amplifier at a frequency of 640 Hz, are 7 m apart. A listener originally at the position of one of the speakers starts walking away from that speaker in a direction that is perpendicular to the line connecting the two speakers. How ...

*May 31, 2016*

**Math**

24

*May 31, 2016*

**physics**

The pressure in a section of horizontal pipe with a diameter of 2 cm is 143 kPa. Water flows through the pipe at 2.80 L/ s. If the pressure at a certain point is to be reduced to 103 kPa by constricting a section of the pipe, what should the diameter of the constricted section...

*May 31, 2016*

**physics**

A horizontal pipe (Venturi Tube) 10.0 cm in diameter has a smooth reduction to a pipe 5.00 cm in diameter. If the pressure of the water in the larger pipe is 8.0 x 105 Pa and the pressure in the smaller pipe is 3.0 x 104 Pa, at what rate does water flow through the pipes. Hint...

*May 31, 2016*

**probability**

If a number is chosen at random from the integers 5 to 25 inclusive, find the probability that the number is a) multiple of 5 or 3 b) even or prime numbers c) less or greater than 18

*May 31, 2016*

**mathematics**

a survey shows that 15% of men in a certain town are tall.if a man is chosen on the street of the town one afternoon, what is the probability that he is short.

*May 31, 2016*

**Math**

1.what are the next three terms in the sequence? -6,5,16,27 A.38,49,60 B. 37,47,57 C.36,45,54 D.36,46,57

*May 31, 2016*

**Public Speaking**

Que5ion of policy

*May 31, 2016*

**Public Speaking**

To persuade employees to commit to recycling” is a:

*May 31, 2016*

**Math(Please Help Assignment Due Today)**

The total surface area of 3D figure

*May 31, 2016*

**Math(Please Help Assignment Due Today)**

The total surface area if 3D figure

*May 31, 2016*

**THANK YOU!**

No need to apologize. THANK YOU SO MUCH!!! all of you are a big help and its great what you do.

*May 31, 2016*

**Answers for 4 and 12 CHECK**

answers for 4 and 12: 4. Supply-Side Economics 12. peace with honor

*May 31, 2016*

**@writeacher**

sorry i posted twice i explained why in the beginning of my questions

*May 31, 2016*

**CHECK my world history answers **

sorry for posting twice but i really would appreciate if someone could check my answers? 1 star* at the end of questions and multiple stars**** at the end of my answer 2. This group, founded by Reverend Jerry Falwell in 1979, was a political organization working to fulfill ...

*May 31, 2016*

**physics **

A body starts to slide over a horizontal surface with an initial velocity of 0.5m/s. Due to friction its velocity decreases at the rate of 0.05m/s^2 how much time will it take for the body to stop?

*May 31, 2016*

**Third Parties**

Are some third parties composed of liberals or conservatives?

*May 31, 2016*

**physics help**

0.161T

*May 31, 2016*

**Algebra**

How do I solve this equation? 1+1/x over x over 1/x-1 By the way this is a Complex Rational Expression.

*May 31, 2016*

**math**

This is how you solve the problem. 3n+1n=0 3(2y)+1(y+3)=0 6y+y+3=0 7y+3=0 7y+3-3=0-3 7y=-3 7y/7=-3/7 y=-3/7

*May 31, 2016*

**physics**

An ice cube floats with 1/9 of its volume below the surface of water, calculate the density of ice.

*May 31, 2016*

**Math (Calculus)**

Find the positive value of the parameter t corresponding to a point on the curve parametrized by {x= t^2 +3 ; y=t^2+t for which the tangent line passes through the origin. I tried with 2t+3 and 2t+1 but it isn't successful

*May 30, 2016*

**physics**

Remember this d=s.t Where d stands for DISTANCE NOT DISPLACEMENT And s for SPEED NOT VELOCITY Way to remember : think about department of science and technology or Dust.

*May 30, 2016*

**Math Calculus I**

let f(x)= 6sin(x)/(2sin(x)+6cos(x)) The equation of the tangent line to y= f(x) at a= pi/6 can be written in tthe form y=mx+b where m=? b=? I found the f': (9*(cos^2(x)+sin^2(x)))/(3cos(x)+sin(x))^2 but i don't know how to fill it into the form. Can anyone help me? ...

*May 30, 2016*

**Read this Dr.Bob222**

I forgot to include that the above problem is accompanied with a virtual lab that would help determine E. However, I don't know how to predict the value of E based on the virtual lab. PS: I don't know how to post a link on this forum and so in order to visit the ...

*May 30, 2016*

**Chemistry- Dr.Bob222**

Using the Nernst equation, determine the diluted concentration for both cells. Show your work. Sn| Sn2+(diluted)||Cu2+|Cu Zn| Zn2+ ||Sn2+(diluted)|Sn

*May 30, 2016*

**Physics**

A garden hose has an inside diameter of 10 mm, and water ﬂows through it at 4.0 m/s. At what rate does water leave the nozzle?. Answer in m3/s

*May 30, 2016*

**Physics**

Water ﬂows through a ﬁre hose of diameter 6.35 cm at a rate of 0.015 m3/s. The ﬁre hose ends in a nozzle of inner diameter 1.750 cm. At what speed does the water exit the nozzle?

*May 30, 2016*

**Math ---HELP!!!!!**

Thanks

*May 30, 2016*

**language arts/ english**

please help

*May 30, 2016*

**language arts/ english**

please help

*May 30, 2016*

**language arts/ english **

Stage directions are one element of a drama. In a paragraph, define and provide an example of stage directions from A Surprising Point of View. Then analyze the stage directions. Explain how these directions contribute to your understanding of A Surprising Point of View. ...

*May 30, 2016*

**Chemistry- Dr.Bob222**

Which metal could you use to reduce Cr3+ ions but not Mn2+ ions? Which metal could you use to reduce ions but not ions? Zn Mg Ni Al

*May 30, 2016*

**physics**

A horizontal pipe (Venturi Tube) 10.0 cm in diameter has a smooth reduction to a pipe 5.00 cm in diameter. If the pressure of the water in the larger pipe is 2.0 x 105 Pa and the pressure in the smaller pipe is 5.0 x 104 Pa, at what rate does water flow through the pipes. Hint...

*May 30, 2016*

**Maths**

Two house A and B are 100m apart and B is due east of A. The bearing of a church c from A is 145 and from B is 225, which house is nearer to the church and by how much

*May 30, 2016*

**Chemistry**

Write short note on sigma bond and pi bond

*May 30, 2016*

**Chemistry**

Write on the physical properties of benzene

*May 30, 2016*

**Chemistry**

Using benzene as an example to illustrate substitution reaction

*May 30, 2016*

**Chemistry**

Define indicators giving four examples and their PH ranges

*May 30, 2016*

**Math**

P, Q, R, are arranged sticks. P is 10km north of Q. The bearing of R from P is 223, and the bearing of Q from R is 097 find the distance of R from P

*May 30, 2016*

**Physics**

So, the answer is 0.0351240737 m/s

*May 30, 2016*

**Physics**

23 should be 21

*May 30, 2016*

**Physics**

The math was right, but 23k should be 2k Pa

*May 30, 2016*

**Physics**

At one end of the Venturi Tube the pressure and speed of flowing water is 21 kPa and 0.05m/s respectively. At another point the pressure is 5 kPa. Find the speed of the water at the second point. Answer in m/s

*May 30, 2016*

**Physics**

vf^2=vi^2 + 2ay (vf^2 - vi^2)/2a=y 8.0 L/s= 0.008 m^3/s ((0.008 m^3/s)^2)/2(9.8)=3.26E-6 m

*May 30, 2016*

**Physics**

Water flows at a rate of 8.0 L/s through an opening at the bottom of a tank that has a diameter of 4.0 cm. How high is the water level of this open- top tank?

*May 30, 2016*

**Physics**

At what speed does water escape from a large open-top tank through an opening 2.00 cm in diameter. The opening is 3.00 m below the water level of the tank on the side of the tank.

*May 30, 2016*

**Math**

12 ounce can of Coke and 8 ounce carton of apple juice. She drank all of the Coke and only 1/2 of the apple juice. There are 30 ml in each ounce of liquid. How many ml did Mrs. Heath drink?

*May 30, 2016*

**algebra**

In his physics class, Mario discovered the height, h, in feet of a bouncing basketball after b bounces is given by the formula: h = 12(2/3)b - what is the height of the ball after 3 bounces?

*May 30, 2016*

**math**

(25)^-1/3 Ã— 3âˆš16

*May 30, 2016*

**maths**

average third number is 12 if two number are 8 and 15 then the third number is?

*May 30, 2016*

**Chemistry **

A flexible plastic container contains 0.833 g of helium gas in a volume of 18.3 L. If 0.203 g of helium is removed at constant pressure and temperature, what will be the new volume?

*May 29, 2016*

**statistics**

How large a sample is needed to be able to estimate the proportion to within plus or minus 3% and be 95% sure the estimate is correct? frame contains approximately 25,000.do not take non-response into account.

*May 29, 2016*

**Chemistry **

A flexible plastic container contains 0.833 g of helium gas in a volume of 18.3 L. If 0.203 g of helium is removed at constant pressure and temperature, what will be the new volume?

*May 29, 2016*

**Intro to computers**

You are an inexperienced Excel user and don’t know how to create your own formulas. You want to use one of the preconfigured formulas but it doesn’t appear in the Formulas tab ribbon. What can you do?

*May 29, 2016*

**Intro to computers**

What does the COUNT function do in Excel?

*May 29, 2016*

**Intro to computers**

You have created a worksheet documenting sales over every quarter since the start of your company. Each column represents a quarter and each row represents a product you sell. Each cell contains the sales generated for that product. You want to find the highest sales figure ...

*May 29, 2016*

**Intro to computers**

You create a formula that adds cells E4 through E19. Three of these cells are blank. What happens?

*May 29, 2016*

**Intro to computers**

How do you change between worksheets inside an Excel Workbook?

*May 29, 2016*

**Physics**

A partially filled bucket of water sits on a scale and its weight is 4.8 N. A piece of metal is suspended from a thread and completely immersed in the bucket (but does not touch the bottom). The scale now reads 7.8 N. Find the volume of the metal.

*May 29, 2016*

**Science **

A man has a weight of 120kg what will be the Weight of same man on the moon

*May 29, 2016*

**Math**

do it yourself

*May 29, 2016*

**PHYSICS**

I don't know

*May 29, 2016*

**Integral calculus**

find the area of the surface generated by revolving about x-axis the upper half of the ellipse 4x^2 + 16y^2 = 64

*May 29, 2016*

**chemistry**

1737 g

*May 29, 2016*

**chemistry**

1737 g

*May 29, 2016*

**Chemistry- Dr.Bob222**

Using the Nernst equation, determine the diluted concentration for both cells. Show your work. Given that [Cu2+] and [Zn2+] are both 2M. Note: I know that the nernst equation is E= E*cell=(-0.0592 V/n)log Q where Q in this case are [Sn2+]/[Cu2+] and [Zn2+]/[Sn2+]. I think that...

*May 28, 2016*

**Chemistry**

2.8 4.1

*May 28, 2016*

**Chemistry- Dr.Bob222**

Using the Nernst equation, determine the diluted concentration for both cells. Show your work. Given that [Cu2+] and [Zn2+] are both 2M. Note: I know that the nernst equation is E= E*cell=(-0.0592 V/n)log Q where Q in this case are [Sn2+]/[Cu2+] and [Zn2+]/[Sn2+]. I think that...

*May 28, 2016*

**Algebra**

2x^3y^3-x^2y^3+2x-y factor by grouping

*May 28, 2016*

**foot hill**

1 (6 + x) - 5 = 12 3 x =

*May 28, 2016*

**Physics**

A hydraulic press has an input cylinder 4.0cm in diameter and an output cylinder 16cm in diameter. (a) Assuming 100 percent efﬁciency, ﬁnd the force exerted by the output piston when a force of 170N is applied to the input piston.

*May 28, 2016*

**Physics**

A partially filled bucket of water sits on a scale and its weight is 3.5 N. A piece of metal is suspended from a thread and completely immersed in the bucket (but does not touch the bottom). The scale now reads 7.5 N. Find the volume of the metal.

*May 28, 2016*

**Physics**

What is the Buoyancy force exerted on a 180kg iron anchor when it is immersed in seawater? The density of iron is 7.8×103 kg/m3 and that of seawater is 1.03 × 103 kg/m3 .

*May 28, 2016*

**Physics**

What is the Buoyancy force exerted on a 180kg iron anchor when it is immersed in seawater? The density of iron is 7.8×103 kg/m3 and that of seawater is 1.03 × 103 kg/m3 .

*May 28, 2016*

**math**

Sum of two numbers is 100 and their difference is 50 the ratio between the two numbers is

*May 28, 2016*

**Physics**

A raft is constructed of wood having a density of 6.00x102 kg/m3. Its surface area is 5.40 m2 and its volume is 0.45 m3. When the raft is placed in fresh water, to what depth h is the raft submerged by its weight? The density of fresh water is 1000 kg/m3. Hint: Use Newton’...

*May 28, 2016*

**algebra**

What is the degree of monomial 7a4b?

*May 28, 2016*

**Physics**

1.01 kg/L

*May 28, 2016*

**Physics**

The mass of a liter of milk is 1.032 kg. The butterfat that it contains has a density of 865 kg/m3 when pure, and it constitutes exactly 4.0 percent of the milk by volume. What is the density of the fat-free skimmed milk

*May 28, 2016*

**Physics**

A thin sheet of gold foil has an area of 2.98 cm2 and a mass of 6.20 mg. How thick is the sheet? The density of gold is 19, 300 kg/m3.

*May 28, 2016*

**Math**

And then my answer for 25 is 210 by 42=5 1%=5 people 100% x 5 people=500

*May 27, 2016*

**Math**

Then for 22 I got: 65 X 0.6 X 1.05=$40.95

*May 27, 2016*

**Math**

I think I got 21. 10/$6.75 = $1.48 12/$.25= $1.65 so option 1 is cheaper.

*May 27, 2016*

**Math**

Hi can you please help me with these math questions? I really need to know the answers. 21. Find the unit price for each option shown below. Round to the nearest cent when necessary. Indicate which option is the better buy. Option I: 10 candy bars for $6.75 Option II: 12 candy...

*May 27, 2016*

**Mircro-Economics**

a-1=2x-xy

*May 27, 2016*

**Mircro-Economics**

ggh

*May 27, 2016*

**Mircro-Economics**

please give me the right answer

*May 27, 2016*

**Mircro-Economics**

mu=p

*May 27, 2016*

**Chemistry**

Choose an alkane that is 6 to 10 carbon atoms in length. List the alkane's name and the other isomers you can properly draw and name. For example: Decane / isomer 2 methyl-Nonane. Do not guess. Draw out on paper then name for best results. Include the drawing of the alkane...

*May 27, 2016*

**English**

i need help with this one

*May 27, 2016*

**math**

Is the term 33

*May 26, 2016*