Monday
December 22, 2014

Posts by Paul


Total # Posts: 789

langage arts
Which of the following passages from the novel is most useful in helping you determine what type of ruler general gage is from Johnny remain? Select all that apply A Sam Adams was so happy his hands shook worse then ever B. He was not brilliant, but he was so tyrant C. His ...
December 17, 2014

Math Question
Given tan θ = -8/5 and sin θ < 0, find sin θ, cos θ, csc θ, sec θ, and cot θ.
December 14, 2014

math
0.3 divited by 0.06 is 5. 0.3 goes in to 0.06 5 times
December 11, 2014

capacity problems
80 buckets of water fill a pond each bucket holds 2litres how much water does the pond hold
December 6, 2014

chemistry
How many bonds can each atom make without hybridization? B,N, and O
December 5, 2014

Maths
What side lengths could a rectangle have such that it's area rounds to 20 m squared ( to the nearest 10 )
November 23, 2014

physics
1) How many seconds does it take a car traveling 40 mph, decelerating at a rate of 7 miles per second, to come to a complete stop? 2) How many feet?
November 20, 2014

programming c++
write a simple c++ application that displays different varieties of meal. the application must do the following; I. allow a user to choose a meal, ii. prompt the user of the choice made, iii. display the cost of the food.
November 14, 2014

Algebra
A seismograph 300 km from the epicenter of an earthquake recorded a maximum amplitude of 5.3 x 10^2 um. Find the earthquake's magnitude. Round your answer to one decimal place.
November 7, 2014

social studies
identify 3 kinds of artifacts and explain what they tell us about ancient people.
October 28, 2014

math
3/5 + 3/4 round each fraction and estimate the sum. add the two fraction using a common denominator and then round the result. which estimate is closer to the actual answer.
October 27, 2014

Chemistry
How to convert 24.63cm to nm^2
October 6, 2014

Chemistry
Report 2 decimal places and appropriate units, the molar mass of steric acid (C17H35COOH). Please help
October 6, 2014

Chemistry
How many moles of steric acid are contained in 0.25mL of a hexane solution containing 5.4x10^-4 grams of steric acid/L? (Hint: g/L x L = g/ (g/mol)=mol). Please show your work. Please help. Thank you
October 6, 2014

Chemistry
Report 2 decimal places and appropriate units, the molar mass of steric acid (C17H35COOH). Thank you
October 6, 2014

Chemistry
How many moles of steric acid are contained in 0.25mL of a hexane solution containing 5.4x10^-4 grams of steric acid/L? (Hint: g/L x L = g/ (g/mol)=mol). Please show your work. Please help. Thank you
October 6, 2014

Chemistry
I need help with two problems need helps please!! 1) Calculate the surface area in nm^2 of a water solution contained in a watch glass with a diameter of 5.6cm. Remember that the area of a circles is calculate as A=πr2 and diameter= 2r 2) If a molecule of stearic acid ...
October 6, 2014

Algebra
Find a scalar equation of the plane that contains the given point P=(-3,-3,1)and the given normal vector n = (-1,4,7)
September 24, 2014

Physics
A gamma ray with 700KeV energy is Compton-Scattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron.
September 23, 2014

Physics
If a 6.0keV photon scatters from a fee proton at rest, what is the change in the photon's wavelength if the photon recoils at 90 degrees?
September 23, 2014

Physics
A television tube operates at 20,000V. What is min wavelength for the continuous x-ray spectrum produced when the electrons hit the phosphor?
September 23, 2014

Physics
The Stanford Linear Accelerator can accelerate electrons to 50GeV (50x10^9eV). What is the minimum wavelength of photon it can produce by bremsstrahlung? Is this photon still called an x-ray?
September 23, 2014

Physics
An experimenter finds that no photo-electrons are emitted from tungsten unless the wavelength of light is less than 270nm. Her experiment will require photo-electrons of maximum kinetic energy 2.0eV. what frequency of light should be used to illuminate the tungsten?
September 23, 2014

Physics
What is the threshold frequency for the photoelectric effect on lithium (phi= 2.93eV)? What is the stopping potential if the wavelength of the incident light is 400nm?
September 23, 2014

Physics
An FM radio station of frequency 107.7MHz puts out a signal of 50,000W. How many photons/s are emitted?
September 23, 2014

Physics
White dwarf stars have been observed with a surface temperature as hot as 200,000 o C. What is the wavelength of the maximum intensity produced by this star?
September 23, 2014

Physics
A body's temperature is increased from 900K to 1900K. By what factor does the total power radiated per unit area increase?
September 23, 2014

Physics
A gamma ray with 700KeV energy is Compton-Scattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron.
September 23, 2014

Physics
If a 6.0keV photon scatters from a fee proton at rest, what is the change in the photon's wavelength if the photon recoils at 90 degrees?
September 23, 2014

Physics
A television tube operates at 20,000V. What is min wavelength for the continuous x-ray spectrum produced when the electrons hit the phosphor?
September 23, 2014

Physics
The Stanford Linear Accelerator can accelerate electrons to 50GeV (50x10^9eV). What is the minimum wavelength of photon it can produce by bremsstrahlung? Is this photon still called an x-ray?
September 23, 2014

Physics
An experimenter finds that no photoelectrons are emitted from tungsten unless the wavelength of light is less than 270nm. Her experiment will require photoelectrons of maximum kinetic energy 2.0eV. what frequency of light should be used to illuminate the tungsten?
September 23, 2014

Physics
An experimenter finds that no photo-electrons are emitted from tungsten unless the wavelength of light is less than 270nm.
September 23, 2014

Physics
What is the threshold frequency for the photoelectric effect on lithium (phi= 2.93eV)? What is the stopping potential if the wavelength of the incident light is 400nm?
September 23, 2014

Physics
An FM radio station of frequency 107.7MHz puts out a signal of 50,000 W.How many photons/s are emitted?
September 23, 2014

Physics
White dwarf stars have been observed with a surface temperature as hot as 200,000 o C. What is the wavelength of the maximum intensity produced by this star?
September 23, 2014

Physics
A body's temperature is increased from 900K to 1900K. By what factor does the total power radiated per unit area increase?
September 23, 2014

health
The spinal cord serves as a conduction pathway for impulses going to and from the ________. A. Lungs B. Liver C. Brain D. Heart
September 23, 2014

Physics
Calculate the energy needed to accelerate a spaceship of mass 10,000 kg to a speed of 0.3c for intergalactic space exploration. Compare with the projected energy usage of the Earth in a decade~10^22J? well i don't know how to start the problem
September 14, 2014

algerbra
The participants in a weight-loss class lost the following weights (in pounds) after three weeks of dieting: 1,5,2,1,3,6 Assuming that these weights constitute an entire population, find the standard deviation of the population. Round your answer to at least two decimal places...
August 27, 2014

Health
D I think
August 23, 2014

Chemistry
A 2.00g sample of Fe3O4 is reacted with with 8.00g of O2 to produce Fe2O3. a) What mass of Fe2O3 will be produced? b) What mass of Fe2O3 will actually be produced if the percentage yield for reaction is 85% produced?
August 12, 2014

algebra
P=2L+2W;L=68,W=84
August 1, 2014

algebra
The sum of two page numbers on facing page of a book is 81. What are the page numbers
August 1, 2014

mathematics
125,454 dollars take 30% how much is left
July 29, 2014

PSY/410
Thanks Ms. Sue
July 9, 2014

PSY/410
Will someone please check my answer please. Thanks in advance. Match the definitions to the correct theoretical model. 1. ___J__ Experiences as a child affect life. Child is influenced by caretaker but also has a part in development. 2. __F___ 2–3 years of age and the ...
July 9, 2014

PSY/410
Thanks Ms. Sue
July 9, 2014

PSY/410
I need help finding information to this question please. I found some information on Modern Psychology but not Abnormal Psychology. Thanks in advance. Create a timeline that displays the development of abnormal psychology. Include at least five to seven main milestones.
July 9, 2014

Chemic
so how much sulphuric acid ml need and how much water?
July 8, 2014

Chemic
Hello could you help me answer to one question please. From 98% Sulphuric acid to make 50ml 5% sulphuric acid How to DIlute with water , how much need ?
July 8, 2014

Psy/405
I need help locating information for these questions please. Describe the differences between dispositional and evolutionary or biological personality theories. Discuss the strengths and limitations of dispositional and evolutionary or biological personality theories as they ...
June 24, 2014

English please help me
Please help me to correct my English grammar. thank you. June 17, 2014 Dear sir, Good day, I regret when I resigned from your company but it’s my family’s reason. I am now presently working here in Maldives as a professional photographer and salesman as well. I ...
June 17, 2014

PSY/405
Hello, I need help finding information for my PowerPoint Presentation. Thanks in advance Create a 10- to 12-slide Microsoft® PowerPoint® presentation, including detailed speaker notes,on traditional and contemporary psychodynamic theories. Include the following for ...
June 10, 2014

math
Hello there, im doing an equation and its mind boggling me badly so i want to see if im doing something wrong or not. It goes like this: sinx - Squareroot of 3/2 > 0 x € [0,2pi) i start by moving the sqroot of 3.. so i have sinx >sq3/2. as of that my resaults are 1,...
April 29, 2014

Science
the force you would need to accelerate an object with high mass quickly is the biggest one.
April 29, 2014

Physics
thank you very much ! i got it half the way but couldnt figure out how to finish it .
March 31, 2014

Physics
A steel ball hangs in a 147cm thread which is dragged right and then let go. Velocityh of the ball is 2,44m/s when it goes through the middle position. I dont have any mass given up. How many degrees to the side had the ball been dragged?
March 31, 2014

Physics
In a cyclotron (one type of particle accelerator), a deuteron (of mass 2.00 u) reaches a final speed of 10.1% of the speed of light while moving in a circular path of radius 0.540 m. What magnitude of magnetic force is required to maintain the deuteron in a circular path?
March 27, 2014

math
450 divide 14?
March 27, 2014

Math
Write the multiples of 7 through 70:
March 27, 2014

6th Grade Math
A drawer contains 3 blue ribbons, 4 red ribbons, and 3 green ribbons. A ribbon is randomly chosen from the drawer, replaced, and another ribbon is chosen. Find each probability"
March 26, 2014

math
Hoe do you do 450 divide14?
March 25, 2014

Physics
Ten cars at an intersection are blowing their horns simultaneously, creating a 98 decibel sound in the middle of the intersection. What is the average sound level for each car?
March 20, 2014

Physics
A train blows its horn as it approaches a crossing. The train engineer observes a frequency of 118 Hz and a stationary observer observes a frequency of 122 Hz. What is the speed of the train? Use the speed of sound as 340m/sec
March 20, 2014

Physics
If a piano tuner hears 3 beats each second when listening to a 8 Hz tuning fork and a single string on the piano which is of higher frequency.. What is the frequency of the single string from the piano?
March 20, 2014

Finance
Anderson International Limited is evaluating a project in Erewhon. The project will create the following cash flows: Year Cash Flow 0 –$690,000 1 243,000 2 175,000 3 256,000 4 231,000 All cash flows will occur in Erewhon and are expressed in dollars. In an attempt to ...
March 19, 2014

Finance
Handy Enterprises has gathered projected cash flows for two projects. Year Project I Project J 0 –$215,000 –$215,000 1 104,000 75,000 2 93,000 86,000 3 79,000 96,000 4 72,000 105,000 Requirement 1: At what interest rate would the company be indifferent between the ...
March 19, 2014

physical science
Suppose you are camping in the mountains and you need to melt 1.8 kg of snow at 0.0 degC to 70.0 degC. The specific heat of water is 4186 j/kg*C while the latent heat of fusion for water equals 3.34 x 10^5 J/kg. How much heat will be needed? Express in KJ.
March 18, 2014

Physics
Smoking causes blood vessels to constrict. If the average blood vessel radius of a smoker decreases 7.6% and the body increases blood pressure to maintain a constant flow. Calculate the needed percent increase in pressure.
March 17, 2014

Physics
An artery supplying heat muscle with blood is occluded to 13.9% of its original radius by a clot. By what percent is the blood flow through this artery reduced.
March 17, 2014

Physics
Neglecting the pressure drop due to resistance, calculate the blood pressure in mmHg in an artery in the brain 32 cm above the heart. The pressure at the heart is 120mmHg and the density of blood is 1.05g/cm3.
March 17, 2014

Physics
A full term fetus may have a mass of 3.3 kg . If the entire weight of the fetus rests momentarily on the mother's bladder, supported on an area of 78.8 cm2 calculate the pressure exerted in mmHg.
March 17, 2014

Phsyics
Determine the absolute pressure at the bottom of a lake that is 66.1 m deep. Write your answer correct to two decimal paces let Patm = 101,300 Pa
March 13, 2014

Physics
A swimming pool has dimensions 26 m x 32 m and a flat bottom. When the pool is filled to a depth of 3 m with fresh water, what is the total force due to the water on the bottom?
March 13, 2014

Physics
A 71 kg girl dives off a raft 2.34 square meters floating in a freshwater lake. By how much does the raft rise in cm? Write your answer correct to two decimal places.
March 12, 2014

FInance
Most corporations pay quarterly dividends on their common stock rather than annual dividends. Barring any unusual circumstances during the year, the board raises, lowers, or maintains the current dividend once a year and then pays this dividend out in equal quarterly ...
March 10, 2014

Finance
Sully Corp. currently has an EPS of $2.35, and the benchmark PE ratio for the company is 21. Earnings are expected to grow at 7 percent per year. Requirement 1: What is your estimate of the current stock price? (Do not round intermediate calculations. Stock price $ ...
March 10, 2014

Finance
The stock price of Webber Co. is $68. Investors require an 11 percent rate of return on similar stocks. Required: If the company plans to pay a dividend of $3.85 next year, what growth rate is expected for the company’s stock price?
March 10, 2014

science
A new moon is discovered orbiting Neptune with an orbital speed of 9.3 ´ 10 m/s. Neptune’s mass is 1.0 ´ 10 kg. What is the radius of the new moon’s orbit? What is the orbital period? Assume that the orbit is circular. (G = 6.673 ´ 10 N·m/kg)
March 3, 2014

Physics
Suppose that 6.68 kg of shaved ice is needed to keep medications cold in a room that has no refridgerator. What amount of heat (in calories) is needed to be removed from water at 0 degrees Celsius to make ice. Write your answer correct to two decimal places.
February 26, 2014

physics
Severe stresses can be produced in the joints by jogging on hard surfaces or with insufficiently padded shoes.If the downward velocity of the leg is 7.3m/s when the joggers foot hits the ground. If the leg stops in a distance of 1.1 cm. Calculate the force on the ankle joint. ...
February 12, 2014

Math
Tory has two similar picture frames in her bathroom the ratio of the larger picture frame to the smaller picture is 5:2 if the perimeter of the smaller picture is 30 in what is the perimeter of the bigger picture frame
February 10, 2014

Physics
The energy of the first excited state of a hydrogen atom is -0.34 eV ± 0.0003 eV. What is the average lifetime of for this state?
February 8, 2014

science
After experiment was done.
January 30, 2014

science
If the student opened the bag after the above experiment, what would happen to volume of gas inside? A. The volume of gas in the bag will stay the same. B. the volume of gas in the bag will be decrease. C. The volume of gas in the bag will be increase. D. the volume of gas in ...
January 30, 2014

math
Then describe what happens when you increase the number by 100.
January 23, 2014

math
Find the missing number: 7x6=15+15+? 6+6=?+5
January 15, 2014

math
find the missing number: 6+6= ? +5
January 15, 2014

Physics
6.8 x 10^2 N
December 21, 2013

physics
a man pulls an 80 kg sled up an incline that is at an angle of 25 degrees with the horizontal using a rope attached to the sled at an angle of 35 degrees. If the coefficient of friction between the sled and the incline is 0.70, what force must the man exert on the rope to keep...
December 21, 2013

Engineering
Guys, I would be glad if you post the answer for this questions. Thank you so much.!
December 15, 2013

Algebra
A man invested $15,000. Part of the investment was put into an account that gave 7%, and part in an account that paid 6.5%. The interest earned was 1,520. How much was invested into each account?
November 27, 2013

math
solve 6x^3-13x^2+x+2=0 using a graphing calculator. then use your answer to write the given function in factored form. (do not use the factor theorem to factor this.) (6 marks)
November 25, 2013

Language art
Can you also check these type of infinitive phrases? Thanks 1.To have a balanced diet, keep the food triangle in mind. noun 2. To get good food at that place is impossible.noun 3.Brenda went to that popular, crowded cafe simply to see her friends.adv 4.We listened to Rosalie&#...
November 11, 2013

Language art
Can you check these also? Thanks 1.To have a balanced diet, keep the food triangle in mind. noun 2. To get good food at that place is impossible.noun 3.Brenda went to that popular, crowded cafe simply to see her friends.adv 4.We listened to Rosalie's suggestion to disguise...
November 11, 2013

Language art
What type of infinitive phrases are shown below (noun, adverb or adjective) 1.George wants to take Lea out tonight. adv 2.Would you like to read this detective novel? adj 3. Fifty years ago,people didn't know to avoid "bad"cholesterol. adv 4.My grandmother taught...
November 11, 2013

Language art
What type of infinitive phrases are shown below (noun, adverb or adjective) 1.George wants to take Lea out tonight. 2.Would you like to read this detective novel? 3. Fifty years ago,people didn't know to avoid "bad"cholesterol. 4.My grandmother taught me to make ...
November 11, 2013

Math
Bacteria A has an initial population of 500 and doubles everyday. Bacteria B has an initial population of 50 and triples everyday. How long will it take the population of bacteria B to overtake the population of bacteria A
October 27, 2013

math
Felicia paid $125 to join tennis club. paid $5 every time she used the court write an equation that describes Felicia's total cost for playing tennis as a function of the number of times she plays. let c =the total cost and let n = the number of times she plays. Describe ...
October 21, 2013

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