Tuesday

February 21, 2017
Total # Posts: 273

**Chemistry**

A sample of ammonia gas was allowed to come to equilibrium at 400 K. 2NH3(g) --> N2(g) + 3H2(g) At equilibrium, it was found that the concentration of H2 was 0.0584 M, the concentration of N2 was 0.0195 M, and the concentration of NH3 was 0.430 M. What was the initial ...

*July 16, 2012*

**Geography**

By the early 2000s which country was Taiwan's third largest trading partner?(China),(South Korea). ( U.S.),(Japan)

*June 8, 2012*

**ap calculus**

find the particular solution y=f(x) to the differential equation with the initial condition y(-1)=3/2

*April 28, 2012*

**ap calculus**

write an equation for the line tangent to the graph of f at (-1,3/2) and use it to approximate f(-1,1)

*April 28, 2012*

**calculus**

Given f'(x)=3cosx-10sinx and f(0)= -6 Find f(x)

*March 20, 2012*

**physics**

A woman is riding a Jet Ski at a speed of 27.9 m/s and notices a seawall straight ahead. The farthest she can lean the craft in order to make a turn is 21.0°. This situation is like that of a car on a curve that is banked at an angle of 21.0°. If she tries to make the ...

*February 16, 2012*

**physics**

Two banked curves have the same radius. Curve A is banked at an angle of 11°, and curve B is banked at an angle of 17°. A car can travel around curve A without relying on friction at a speed of 18.5 m/s. At what speed can this car travel around curve B without relying ...

*February 16, 2012*

**physics**

A satellite orbits a planet at a distance of 3.80 108 m. Assume that this distance is between the centers of the planet and the satellite and that the mass of the planet is 3.90 1024 kg. Find the period for the moon's motion around the earth. Express the answers in days.

*February 16, 2012*

**Physics**

A computer is reading data from a rotating CD-ROM. At a point that is 0.037 m from the center of the disc, the centripetal acceleration is 130 m/s2. What is the centripetal acceleration at a point that is 0.064 m from the center of the disc?

*February 16, 2012*

**math**

is 5+x and x+5 represent the same expression? explain

*January 31, 2012*

**Friction**

Why can't you pull two phone books apart that have each of their pages one on top of the other?

*January 16, 2012*

**science**

your desk is classified as a solid because it has a definite shape and volume at__________________________.

*January 10, 2012*

**Math**

What is the VOLUME of the solid with the given measurements? Trianglular prism: base 2cm by 3cm height 8cm

*December 28, 2011*

**COM/156**

Ok, I can do that. When I post my essay on the board, will that bring up a red flag on my plagiarism checker?

*August 20, 2011*

**COM/156**

I have a rough draft of an essay that I need revised and checked for comma usage. Would someone be able to look my essay over? To be honest I do not have another person to read over my work.

*August 20, 2011*

**chemistry**

A sample of ammonia gas at 65.5°C and 0.921 atm has a volume of 15.31 L. What is its volume when the temperature is -15.8°C and its pressure is 0.921 atm?

*July 20, 2011*

**com/156**

Thank You!

*July 7, 2011*

**com/156**

If I only used certain pages, where would I put that in my citation?

*July 7, 2011*

**com/156**

So since I am not actually using exact words but this is where I got the information would I just do this after my post? References McClean, S. (2011). Writing for success (1st ed.). Irvington, NY: Flat World Knowledge, Inc.

*July 7, 2011*

**com/156**

I am very nervous about plagiarism and citing sources. If the instructor tells us to review the information provided in chapter twelve and explain the steps of writing, do I have to put the textbook as a reference if I read all of the information and wrote my post in my own ...

*July 7, 2011*

**com155**

Thank You!

*July 2, 2011*

**com155**

Can you check my paragraph for grammar errors, strong topic/concluding sentence,and any other recommended feed back? Paragraph two was more effective than paragraph one because it contained sentence variety and rhythm. Paragraph one consisted of short sentences that often ...

*July 2, 2011*

**com 155**

Thank you!

*June 9, 2011*

**com 155**

Are these sentences using the adjective and adverb correctly? Do they make sense? 1) The girl is a "bad" softball player.(Adjective) 2) The girl played softball "badly." (Adverb) 1) I am "cautious" when I run at night. (Adjective) 2) I "...

*June 9, 2011*

**English**

In the sentence,"She sat down and watched."is down an adverb?

*June 8, 2011*

**com 155**

Thank You both!

*June 7, 2011*

**com 155**

Should I change this sentence? When I am studying I glance over the chapter summaries to get a good idea of the chapter topics. -the chapters' topics.

*June 7, 2011*

**com 155**

Have I used good and well correctly? In my opinion, your book is very good. The text is extremely well written. You did well explaining the rules of grammar. I am a good reader and this book was easy to follow and understand. I especially like the practices and exercises in ...

*June 7, 2011*

**com155**

Thank You!!

*June 7, 2011*

**com155**

With the word credit... When I said credit report.. the use of credit in that case would be an adjective also, Right?

*June 7, 2011*

**com155**

Is "when" at the beginning of the paragraph an adverb?

*June 7, 2011*

**com155**

I am confused. I thought credit was a noun? Also, do you mean I should () every time I have used my?

*June 7, 2011*

**com155**

Have I used adjectives and adverbs correctly here? Adjectives() Adverbs"" have I got them all? When I was (younger) I learned that I had to be "very" (careful) with credit cards. (Managing) debt can be a (difficult) task. I know that it is "extremely&...

*June 7, 2011*

**com155**

I have his on there. I am not sure what you mean?

*June 5, 2011*

**com155**

Do I have all the pronouns in() in these sentences? Are the sentences correct? 1. My friend Gloria has decided that (she)needs to go to debt counseling. 2. When Gloria and I discussed the matter (we) thought that it would be best to talk to (her) husband first. 3. Gloria's...

*June 5, 2011*

**com155**

Thank you.

*June 2, 2011*

**com155**

How is the use of pronouns in these sentences? I am worried that I am not using singular/ plural agreement correctly. 1. Vincent went to the park with his friends. 2. Rosa told her friend, Lulu, that she could not meet her at the mall. 3. The students enjoyed their new ...

*June 2, 2011*

**com155**

Is the use of the pronoun correct in this sentence? 1. The kitten used its claws to shred the curtains.

*June 2, 2011*

**com 155**

Is the use of pronouns correct in this sentence or should their be his/her? 1. Most importantly, a person should track their expenses and make purchases that are going to be assets for them in the long run.

*June 2, 2011*

**com 155**

Okay, I get it now. Thank you for your help.

*May 25, 2011*

**com 155**

I am still confused about the comma here. I thought you use a comma before for, and, or, so, but, nor, and yet? 4. I need to use a dictionary while I am writing, so that I can look up unfamiliar words.

*May 25, 2011*

**com 155**

Thank you! I just caught that when I was rewriting that sentence.

*May 25, 2011*

**com 155**

4. I need to use a dictionary while I am writing, so that I can look up unfamiliar words.

*May 25, 2011*

**com 155**

Are these well written sentences? 1. When I am writing, my words need to construct a clear picture for my readers. 2. I will avoid using slang in my writing. 3. Using irrelavant words, is one error I need to change in my writing. 4. I need to use a dictionary while I am ...

*May 25, 2011*

**com 155**

Are these well writen sentences? 1. The boy did not accept the tickets, because he felt that he did not deserve them. 2. Everyone was allowed to go to the park, except for the students who had been to the office. 3. The birds are enjoying the new bird bath. 4. When we went to ...

*May 24, 2011*

**com 155**

Is the comma placement and capitalization correct in this sentence? The class went to the Botanical Gardens, it's a spectacular sight.

*May 20, 2011*

**com 155**

Does this sentence use possessives correctly? 1. My neighbor's computer files were wiped out, so he lost all of his financial records.

*May 20, 2011*

**com 155**

I need you to check the use of possessives in my sentences. Are the sentences correct? 1. Vincent's personal files are stored in the attic. 2. My neighbor's credit cards got stolen. 3. Vincent uses his bank's vault to store his financial information.

*May 20, 2011*

**com 155**

I need you to check the 3 sentences for the correct use of a plural: 1. Personal financial information should be kept in files. 2. Store financial papers in a filing cabinet. 3. Bank statements should be stored in a safe place.

*May 20, 2011*

**com 155**

Is this sentence using the possessive correctly and are the apostrophes correct?: Vincent's personal file's are stored in the attic.

*May 20, 2011*

**Quick Question**

worldhistory.abc-clio ancienthistory.abc-clio infotrac.galegroup Just add a (.)com after each, minus the ()

*April 27, 2011*

**Quick Question**

any abc-clio site or gale resource center. It won't let me post full links, sorry.

*April 27, 2011*

**trig**

Any chance you could show a bit of work? Thanks.

*April 27, 2011*

**trig**

PIa = pi*a PI/2 = pi/2

*April 27, 2011*

**trig**

A coil of wire rotating in a magnetic field induces a coltage E=20sin((PIa/4) - (PI/2)). Use an identity to express this in terms of cos(PIa/4). Types of Identities: Double Angle, Half Angle, Sum and Difference of Sine, Cosine, and Tangent, Pythagorean, Reciprocal, Quotient. ...

*April 27, 2011*

**PHYSICS PLEASE HELP**

240 = v/2L 240*(2*.640) = 307 ... 1st harmonic wavelength = 1.28 so, First Question: v = 307m/s & wavelength = 1.28 frequency of 3rd harmonic = 3*f = 720 n = # of harmonic so 3*f = 3rd harmonic 720=n(v/(2L)) so n/(2L) = wavelength 3/(2*.640) = 2.34 m Second Question: 2.34m 3(...

*March 31, 2011*

**math**

Sophina bought 3 yards of trim to put around a rectangular scarf. She does not want the scarf to be wider than 12 inches or narrower than 6 inches. Using whole numbers, if she uses all the trim, what are the possible dimensions of her scarf in inches?

*March 30, 2011*

**math**

Mrs Nelson has a rectangular flower box that is 5 feet long and 2 feet tall. She wants the width of the box to be no more than 5 feet. If the width is a whole number, what are the possible volumes for the flower box?

*March 30, 2011*

**math**

Jeff put a small box that is 12 inches long, 8 inches wide, and 4 inches tall inside a box that is 20 inches long, 15 inches wide, and 9 inches high. How much space is left in the larger box?

*March 30, 2011*

**math**

Raymond has exactly 360 square inches of cardboard to make a box. He wants two of the dimensions to be 6 inches and the other one to be a whole number of inches. How many different size boxes can he make?

*March 30, 2011*

**Algebra 1**

What is the answer to 6t^+2-4t-3t+2? And please explain the steps of how to solve this. The directions say to factor each polynomial.

*March 6, 2011*

**Physics**

In Figure 4-44, a baseball is hit at a height h = 1.10 m and then caught at the same height. It travels alongside a wall, moving up past the top of the wall 1.1 s after it is hit and then down past the top of the wall 4.8 s later, at distance D = 47 m farther along the wall. (...

*January 21, 2011*

**social studies**

Why do you thnk the distance between europe and the u.s affected american attitudes toward the war?

*January 20, 2011*

**Chemistry**

using the balanced reaction equation for the combustion of propane, determine the number ofmoles of oxygen that would react with.50 mol propane and the number of moles of carbon dioxide that would be produced?

*January 9, 2011*

**physics**

the same force is applied to each object which distance will travel thegreatest distance... a.bicycle b.car c. truck d. bus

*January 6, 2011*

**Math**

5^1=5 5^2=25 5^3=125 using patterns determine the last 3 digits of 5^100

*December 16, 2010*

**Physics**

A long wire that carries a current is bent into a solenoid with upward current in the front looking. If the observer could "see" the magnetic field inside this arrangement of solenoid from the right side, how would it appear? a) The observer would "see" a ...

*November 14, 2010*

**science**

3. The membranous coverings that protect the b B. meninges. D. gyri. 4. A common result of hyperthyroidism is A. acromegaly. C. Graves’ disease. B. osteoporosis. D. myxedema. 5. A 63-year-old man has become progressively hard of hearing. He’s a retired airplane ...

*November 12, 2010*

**physics 111**

The 20-g centrifuge at NASA's Ames Research Center in Mountain View, California, is a cylindrical tube 58 ft long with a radius of 29 ft (see figure). If a rider sits in a chair at the end of one arm facing the center, how many revolutions per minute would be required to ...

*November 7, 2010*

**english**

with puppy dog eyes

*October 31, 2010*

**physics 111**

A ball of mass 0.120 kg is dropped from rest from a height of 1.25 m. It rebounds from the floor to reach a height of 0.600 m. What impulse was given to the ball by the floor? answer in kg·m/s

*October 27, 2010*

**physics 111**

A block of mass 2.50 kg is pushed 2.80 m along a frictionless horizontal table by a constant 10.0 N force directed 25.0° below the horizontal. 1) what's the work done by the applied force? in joules 2)whats the work done by the normal force exerted by the table? in ...

*October 15, 2010*

**phy 111**

A daredevil on a motorcycle leaves the end of a ramp with a speed of 34.5 m/s as in the figure below. If his speed is 32.1 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance.

*October 14, 2010*

**calculus reposted**

Given the graph of f(x) find the graph of 2 f( -3x - 2) - 4 Is this correct??? First, compress the graph horizontally by 3. Second, reflect the graph over the y-axis. Third, shift the graph 2 units to the right. Fourth, stretch the graph vertically by 2. Lastly, shift the ...

*October 14, 2010*

**Physics 111**

thank you so much drwls

*October 14, 2010*

**Physics 111**

While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. If a 62 kg person develops a power of 67 W during a race, how fast is the person running? (Assume a running step is 1.5 m long.)

*October 14, 2010*

**calculus**

Given the graph of f(x) find the graph of 2 f( -3x - 2) - 4 Is this correct??? First, compress the graph horizontally by 3. Second, reflect the graph over the y-axis. Third, shift the graph 2 units to the right. Fourth, stretch the graph vertically by 2. Lastly, shift the ...

*October 13, 2010*

**Calc. Repost- Please Help**

I'm confused. Why do you use f(x)= 1-x, g(x)=-x... I don't see that interval, but I see that interval 2 is the 2nd line for g(x). ???

*October 13, 2010*

**Calculus**

How do I solve for lim h->0 (((a+h)^2 + 1)/(3(a+h)+7) - ((a^2 + 1)/3a + 7)) and then all divided by h? The question was use the limit definition to find the derivative of f(x)= (x^2 + 1)/(3x + 7). I tried solving what I did above, but had no luck. I used wolfram alpha to ...

*October 12, 2010*

**calculus**

find functions f(x) and g(x) so that f(g(x))= sqrt(tan(3x^2 - 7)) Would this work??? g(x)= 3x^2 -7 f(x)= sqrt(tan(x))

*October 12, 2010*

**geometry**

(6,4)and(6,-2) find the distance between these pairs of points

*September 22, 2010*

**math**

what is the pattern for the following numbers 8 17 35 71 7143

*September 15, 2010*

**Science**

How does a cell gets its nutrients?

*August 21, 2010*

**Calculus 1**

Find the equlibrium point for each pair demand and supply function. Demand:q = 8800-30x; supply:q = 7000+ 15x

*July 22, 2010*

**Algebra**

for the follwong equation, state the value of the discriminant and then describe the nature of the solutions: 5^2+9x+2=0

*June 10, 2010*

**Algebra**

Thanks...

*June 9, 2010*

**Algebra**

Multiply: (-3t)^2(2t^6)^3

*June 9, 2010*

**Algebra**

Solve by completing the square: x^2 + 7/2x =7 (7/2x is a fraction)

*June 3, 2010*

**algebra**

find all numbers for which the rational expression is undefined 8/x-4

*May 5, 2010*

**Math**

so with 4/8 and 7/8is 7/8 greater or less than 4/8 and why?

*April 30, 2010*

**Math**

How do you know which one is the greatest? and why please? 7/8 or 1/2

*April 30, 2010*

**Math**

here are some fractions : 3/9, 8/9, 7/9, 4/9, 2/9, 5/9, 6/9 If I were to put them in the order of the greatest, what order does that mean and how did you work that out?

*April 30, 2010*

**math**

log 625 3/4 = x

*April 4, 2010*

**math**

log 32 x = 6/10

*April 4, 2010*

**math**

the graph shows a circle with a radius 1 inscribed in the parabola y=x^2. Find the center of the circle.

*March 31, 2010*

**Math**

Francesca has 16/7 ft of string for her kite. Jason has 2 3/4 ft of string for his kite. Katie has more string than either Francesca or Jason. How much string could Katie Have?

*March 17, 2010*

**Physics**

0.32

*March 9, 2010*

**Chemistry**

What is the pH of a solution containing 0.10 M propanoic acid (HC3H5O2) and 0.10 M sodium propanoate after 0.02 mol of HCl is added to 1.0 L of the solution?

*February 28, 2010*

**Chemistry**

This could be a dumb question but how do you find Kb here in order to solve for x?

*February 22, 2010*

**Chemistry --really need help!**

I was also wondering about this question. So once you get those moles all you should have to do is find the concentration by dividing by 25 L? Then plug it into the equation for Kc? I keep getting 320, which isnt right. Kc= (2*.2*.05/25L)^2/(.2*.95/25L)(.2-3*.2*.05/25L)^3 That...

*February 19, 2010*