Thursday

April 24, 2014

April 24, 2014

Total # Posts: 210

**Psychology**

Can someone reword this for me? I am having problems comprehending the question. The question is: If psychological needs have presumptive brain or physiological correlates, are they still psychological needs?

**physics **

A person of mass M lies on the floor doing leg raises. His leg is 0.85m long and pivots at the hip. Treat his legs (including feet) as uniform cylinders, with both legs comprising 34.5% of body mass, and the rest of his body as a uniform cylinder comprising the rest of his mas...

**physics**

Cheetahs can sustain speeds of 25 m/s over short distances. One of their prey is Thomson's gazelle, with top speed about 22 m/s. If a 52kg cheetah running southward at top speed grabs and holds onto a 23kg gazelle running westward at 22 m/s, find the velocity of these anim...

**geometry**

In a triangle MNO with altitude NP with MP of 15 and NP of 9 what is the length of PO? MNO creates a right angle!

**English**

All answers given are 100% correcct

**Chemistry **

A gaseous mixture contains 413.0 Torr of H2(g), 372.1 Torr of N2(g), and 70.1 Torr of Ar(g). Calculate the mole fraction, X, of each of these gases.

**Chemistry**

I don't know why this posted again. Sorry and I have some questions. How do I find the Ph2 and PN2?

**Chemistry **

A gaseous mixture contains 413.0 Torr of H2(g), 372.1 Torr of N2(g), and 70.1 Torr of Ar(g). Calculate the mole fraction, X, of each of these gases.

**Chemistry **

If an ideal gas has a pressure of 5.63 × 105 Pa, a temperature of 401 K, and a volume of 0.0313 m3, how many moles of gas are in the sample?

**Chemistry **

An aerosol can is empty, except for the propellant gas which exerts a pressure of 1.20 atm at 21 °C. If the can is thrown into a fire and heated to a temperature of 565 °C, what will be the pressure inside the hot can?

**science**

I need to make an acrostic for the word kinetic

**Boston Tea Party**

another question: This was Governor Hutchinson's fault right? because Sam Adams and the Sons of Liberty demanded that the ships leave the harbor.

**Boston Tea Party**

With the Boston Tea Party was it a group of British colonists who boarded the ships and destroyed the tea by dumping it in the Boston Habor?

**bio/animals**

Do cows give birth to ox's? I was reading that an ox is just a castrated bull.

**Angular Resolution**

An astronomer wants to determine whether or not he or she can photograph Castor and Pollux at the same time on a 5 x 8 inch plate using a lens system with a 1200 mm focal length. If the two stars are approximately 5 degrees apart, will it be possible to make the photograph?

**Optics/Physics**

Predict the size of the image of Jupiter if photographed at opposition with a lens having a focal length of 9600 mm. (Assume Jupiter is a disk of 1.43 x 10^5 km and is 6.29 x 10^8 km from the Earth.)

**Physics/Optics**

What would the image size of the moon be if you photographed it at Cassegrain focus of a 24-inch telescope with a focal length of 9600mm?

**Optics**

Predict the size of the image of Jupiter if photographed at opposition with a lens having a focal length of 9600 mm ( Assume Jupiter is a disk of 1.43 x 10^5 km and is 6.29 x 10^8 km from the earth).

**Physics/Astronomy**

Predict the size of the image of Jupiter if photographed at opposition with a lens having a focal length of 9600 mm ( Assume Jupiter is a disk of 1.43 x 10^5 km and is 6.29 x 10^8 km from the earth).

**physics**

An object whose height is 0.670 meters is located 2.00 meters from the face of a thin convex lens with a focal length of 0.780 meters. The image will be located ______ meters away from the lens.

**Math**

3. -5 + -2

**Math**

3. (-5)-(-2)

**Math**

2. -18 + 2

**math**

write the simplest form 2.30

**Physics**

a plane is 521 meters horizontally from its intended target traveling at 62.5 m/s in order to hit the intended target from that distance how high is the plane in meters

**biochemistry**

2. Given the following data, calculate the Keq for the denaturation reaction of β-lactoglobin at 25 oC. Δ Ho = -88 kJ/mol, Δ So = 0.3 kJ/mol

**biochemistry**

1. Walking consumes approximately 100 kcal/mi. In the hydrolysis of ATP (ATP → ADP + Pi), the reaction that drives the muscle contraction, ΔGo’ is -7.3 kcal/mol (-30.5 kJ/mol). Calculate how many grams of ATP must be produced to walk a mile. ATP synthesis is co...

**Chemistry**

1.What is the pH of a solution containing 0.042 M NaH2PO4 and 0.058 M Na2HPO4 ? The pKa of sodium phosphate is 6.86. pH = 6.86 + log [0.058] / [0.042]; pH = 6.86 + 0.14; pH = 7.00 That is my answer to the above question. The following question is what I am having trouble with....

**math**

if you buy 30 apple for 47 dollars how much does 1 apple cost

**Math**

Prove 1+sec2x / tan2x = cotx

**Math**

A boy throws a stone into a lake from a 74 foot high wall. The chart gives the horizontal distance, x (in feet), the rock has traveled from Jesse and the height, y (in feet) of the rock above the lake. Distance, x: (14) (24) (41) (55) Height, y: (86.43) (91.36) (92.19) (85.75)...

**science**

how much force is required to keep an overgrown 50 kg ferret moving at a constant velocity across a .33 cos of friction floor?

**math**

joe walked 4 miles north, 9 miles east then 8 miles north and 7 miles east if Al decides to walk straight back to where he started how far must he walk?

**Physics**

A flywheel for energy storage in a hybrid gasoline-electric car is a ring-shaped rotor of mass 50 kg, designed to rotate at 30000 rpm. At that speed it stores 10 MJ of energy (equivalent to about a cup of gasoline). What is the ring's diameter?

**Physics**

My mistake, wrong button sorry John!

**Physics**

A flywheel for energy storage in a hybrid gasoline-electric car is a ring-shaped rotor of mass 50 kg, designed to rotate at 30000 rpm. At that speed it stores 10 MJ of energy (equivalent to about a cup of gasoline). What is the ring's diameter?

**Geography**

Okay so here is the question Suppose you are an official in an Eastern European nation. Write a letter to a major manufacturer in the United States. In the letter, explain why the manufacturer might want to set up a factory in your nation. Choose a specific nation and a specif...

**6th grd math**

Brenda spent half her money at astore.At another store,she spent half her remaining money and$6 more.She had $2 left.How much did Brenda have when she arrived at the store?

**health**

Summarize at least one environmental justice public health issue and discuss the ways in which an intervention strategy or program policy might address this

**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 conce...

**Geography**

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

**ap calculus**

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

**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)

**calculus**

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

**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 ...

**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 ...

**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.

**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?

**math**

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

**Friction**

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

**science**

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

**Math**

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

**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?

**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.

**math**

Explain how to find the sum negative sixty-five plus positive forty-one using a number line, then give the answer.

**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?

**com/156**

Thank You!

**com/156**

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

**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.

**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 wo...

**com155**

Thank You!

**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 bega...

**com 155**

Thank you!

**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 "cauti...

**English**

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

**com 155**

Thank You both!

**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.

**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 th...

**com155**

Thank You!!

**com155**

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

**com155**

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

**com155**

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

**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&q...

**com155**

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

**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...

**com155**

Thank you.

**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 textboo...

**com155**

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

**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.

**com 155**

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

**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.

**com 155**

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

**com 155**

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

**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 writin...

**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 ...

**com 155**

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

**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.

**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.

**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.

**com 155**

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

**Quick Question**

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

**Quick Question**

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

**trig**

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

**trig**

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

**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. T...

**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(3...

**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?

**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?

**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?

**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?