Monday
May 25, 2015

Posts by mark


Total # Posts: 1,311

physics
A 65 kg object is dropped from rest a distance of 4.3m onto a spring with a stiffness coefficient of 6.2x10^4n/m. How far is the spring compressed?
February 27, 2011

math
If the base to a gutter and 12 feet from the base of a house, how many feet high on the house does the ladder reachIf th
February 24, 2011

physics
Two objects .25m apart exert a force of 2.5x10 to the -11 power on each other, if thier total mass is 4kg, what is the mass of each?
February 23, 2011

physics
Two objects .25m apart exert a force of 2.5x10 to the -11 power on each other, if thier total mass is 4kg, what is the mass of each?
February 23, 2011

physics
2 objects are .25m apart and exert a force of 2.5x10^-10 N on each other. Thier total mass is 4 kg. what is the mass of each?
February 20, 2011

Physics
I used my last attempt at the problem using this info, but was unable to figure out the answer. Thank you for responding though.
February 20, 2011

Physics
Can't figure this one out. "In a pickup game of dorm shuffleboard, students crazed by final exams use a broom to propel a calculus book along the dorm hallway. If the 3.5 kg book is pushed from rest through a distance of 0.88 m by the horizontal 25 N force from the ...
February 20, 2011

reading
If a person lives over 160 years What will happen?
February 19, 2011

reading
What will be the impact on society if people live more than life expectancy?
February 19, 2011

reading
can you please answer my other questions?
February 19, 2011

reading
What is the advantage or disadvantage that people used telomere?
February 19, 2011

reading
thank you
February 19, 2011

reading
What will be the impact on society If people live more then life expectaney?
February 19, 2011

math
which is matches the problem? <,>,= 8.5_____-10^3
February 15, 2011

physics
Assume acceleration due to gravity=10 m/s. A ball is thrown vertically upward from top of a building with speed of 20 m/s. On the way back ball misses the building and lands on the ground. Total time the ball is in air is 6 seconds. Determine the height of the building with ...
February 14, 2011

Math
Theresa's company just bought 18 new computers. She was told that there would be a random drawing to see which employees got one of the new computers. If Theresa has 46 coworkers, what is the probability that she will get one of the new computers?
February 14, 2011

toxicology
a) Generally speaking, the ability of a substance to move across a membrane by passive diffusion is enhanced by decreasing size and by an increasing octanol/water coefficient. T or F
February 13, 2011

geometry
Assume there are 2 similar polygons, whose scale factor is 4:5. If the larger polygon has an area of 30 units squared, what is the area o the smaller polygon?
February 13, 2011

COM/155
I will try later.....thank you
February 13, 2011

COM/155
none of my bold or underlined words showed up....
February 13, 2011

COM/155
For this assignment, I have reviewed the amazingly racy MTV reality series called Jersey Shore. The show follows the lives of eight savagely stylish young Italian-Americans at the Jersey Shore. During the day, the cast shares shifts working at a competitively busy boardwalk t-...
February 13, 2011

COM/155
My assignment is to write a television show review. I am to Bold adverbs, and underline adjectives. I think I found them all, what do you think?
February 13, 2011

spelling
what word ends in -let and has the same meaning as starlet?
February 13, 2011

english
when do you use present perfect?
February 12, 2011

groundwater science
Assume that a gaining stream exists in physical connection with groundwater in an unconfined aquifer. Assume that several contour lines of equal head cross the stream and intercept it. True or False: Since the stream is gaining, the contour lines of equal head will increase in...
February 12, 2011

COM/155
Thank you for your help. Have a good night.
February 6, 2011

COM/155
me, her, my, who, they. Am I correct?
February 6, 2011

COM/155
•Write several sentences describing a recent interaction with a friend or family member about personal finance or credit cards. •Use at least 5 different pronouns. I think these sentences are correct. They should include the necessary five diferent pronouns. What do ...
February 6, 2011

chemistry
Just figured this out for my Chemistry class. .86 / (23 + 34.45) = X / (39 + 34.45) Solve for X ( .86 / (23 + 34.45) ) * (39 + 34.45) 1.099 = X X =
February 3, 2011

Physics
A crate of a mass 150 kg is lifted onto a truck 2.5 m above the ground. How much potential energy has the crate gained?
February 2, 2011

com/155
Thanks again!
January 30, 2011

com/155
My assignment is to write a paragraph about what I've learned this week. It should contain clear and concise sentences, with correct spelling and puncuation. How do you think I did? This Weeks Material Has Changed The Way I Write This weeks material has opened my eyes to ...
January 30, 2011

COM/155
Thank you so much! Have a great night.
January 30, 2011

COM/155
also.....the puncuation also has to be correct.
January 30, 2011

COM/155
For this project, I had to write 5 clear, concise, well written sentences about what I've learned this week. Do these sentences look correct to you? One of the most important lessons I have learned is to stay away from using vague or inappropriate words in my writing. I ...
January 30, 2011

Physics
In an arcade game, a ball is launched from the corner of a smooth inclined plane. The inclined plane makes a 33.3° angle with the horizontal and has a width of w = 42.9 cm. The spring-loaded launcher makes an angle of 45.0° with the lower edge of the inclined plane. ...
January 30, 2011

COM155
Thank you for your help! Have a great day.
January 30, 2011

COM155
Ok.....How is this? Identify those with errors by marking each of the errors in bold. Make the correction in parentheses after the error. For those that are correct, write correct at the end of the sentence. Their (There) are three kids in the room. We have been married for 20...
January 30, 2011

COM155
I think I found all of the errors, what do you think? Identify those with errors by marking each of the errors in bold. Make the correction in parentheses after the error. For those that are correct, write correct at the end of the sentence. Their (There) are three kids in the...
January 30, 2011

math
A manufacturer can produce 8,500 units for a total profit of 47,600.00 dollars, but if he increases his production to 11,500 units, then his profit becomes $65,600.00. fixed cost is? net profit per unit produced is?
January 27, 2011

Math
I got that far. But I still do not know how to find the fixed cost and net profit from the p(x) equation.
January 27, 2011

Math
A manufacturer can produce 8,500 units for a total profit of 47,600.00 dollars, but if he increases his production to 11,500 units, then his profit becomes $65,600.00. It follows that his fixed cost is? and his net profit per unit produced is?
January 27, 2011

Math
Thank you so much!
January 24, 2011

Math
So it would be 2 as well correct? Sorry, this is all new for me.
January 24, 2011

Math
If the slope of line f is 2,and a line d is parallel to the line f, what is the slope of line d?
January 24, 2011

Math
A model car is made to a scale of 2 to 25. If the model is 17 inches long, how long is the actual car?
January 24, 2011

physics
im trying to figure out this same problem!!!
January 23, 2011

finanace
Using 7.86 rate of return , what should be the current share price of AirJet Best Parts, Inc. if the company maintains a constant 1% growth rate in dividends and the most recent dividend per share paid on the stock was $1.50?
January 23, 2011

Chemistry
In a chemical reaction, exactly 2 mol of substance A react to produce exactly 3 mol of substance B 2A ---> 3B How many molecules of substance B are produced when 27.9 g of substance A reacts? the molar mass of substance A is 24.7 g/mol STEP 1: convert the mass of A to moles...
January 22, 2011

Math
I am a little confused, can someone please help me? I the radius of a circle is 5m, what is the area of the circle? Is this the same as the surface area and it would be 10m?
January 21, 2011

math
;5$$5=1 qui weep
January 19, 2011

Social Studies
Which of the following is not a means by which cultures became diffused?
January 18, 2011

Social Studies
Compare and contrast how Islam spread with how christianity spread.
January 18, 2011

math
The support wire for a sign meets the wall and the overhang as shown below. If m<2=42 degrees, find m<1. Explain your reasoning.
January 18, 2011

psychology
hi im stuck on a question on my assignment, question , sometimes when going to meet jamie , karen mistakes someone else for him , her motivation and expectations of seeing him effect her perceptions, could you direct me to one study illustrating either of these factors, and ...
January 18, 2011

Math
A cube is both a polyhedron and a prism. This isn't true right?
January 17, 2011

Chemistry
A 5.00-gram sample of glucose, C6H12O6, [molar mass = 180.] is dissolved 10.0 grams of water What is the molality of the glucose solution? Calculate the boiling(BP) and freezing points(FP) of this solution to the nearest 0.1 C°. The vapor pressure of pure water at 30º...
January 15, 2011

math
Sparky weighs 3/4 of her weight, plus 3/4 of a pound. How much does she weigh?
January 13, 2011

9th grade alegbra
two volumes one is 8 the other 125, the surface are is 4, what is the other surface area
January 11, 2011

Math
make up alist of data with the following landmarks 15, 5,10,20
January 10, 2011

Chemistry
When 2.50g of an unknown solute is dissolved in 40.0g of ethanol the solution boils at 79.4C. The normal boiling point of this substance is 78.4C and it has a kb of 1.22C/m. (a) What is the molality of this solution? (b) What is the molecular weight of the solute?
January 9, 2011

Language
Which would be correct? They or Them and I are buying some groceries. Would it be They?
January 6, 2011

statistics
what is the sample space for this experiment: select two cards from a deck of 52 cards and observe the color of each card drawn.
January 2, 2011

java
I hava a Employee class and my main class. But in my netbeans it is saying that cannot find symbol symbol:class Employees location:class Main Why is this?And what should I do? Please send me a detail answer. I will really thankful for all of you.
December 24, 2010

math
how do i design a portable barrier to stop a vehicle travelling at 60km/h, weighing 1800kg within a distance of 1m? the tires cannot be damaged.
December 17, 2010

college algebra
Compute x +y, given the linear system with T # 1 and with the ordered pair (x,y) as solution x + 2y=3 Tx + ( T+1)y = T + 2
December 15, 2010

math
You are forming 3 teams from 25 people. Team A has 8 Team B has 3 Team C has 14 How many ways can team A be selected? How many ways can team B selected from the remaining people? How many ways can team C be selected from the remaining people? How many ways can all teams be ...
December 14, 2010

math
2 1/4 double
December 13, 2010

College Chemistry
48.70 mL of an HCl stock solution was transferred into a 500 mL volumetric flask and filled to the mark. 47.67 mL of the diluted solution was titrated with 0.179 M NaOH and found to have the concentration of 0.885 M. What is the concentration of the stock solution?
December 11, 2010

Geometry
The area of a triangle is 6.75 m squared. If the base of the triangle is 3 m, what is the height of the triangle?
December 7, 2010

french, english
yah i do. I just dont understand it. can you explain???
November 28, 2010

french, english
this is a french fable that I translated but I don't really undersand it. It is called the lion and the hunter... A braggart, lover of hunting, Just lost a dog of good breed, He suspected the body of a lion, Saw a shepherd: "Teach me, please, My thief, he said, the ...
November 28, 2010

Physics
A 0.2 kg object that stretches a spring 6.5 cm from its natural length when hanging at rest oscillates with an amplitude of 1.5 cm. The acceleration of gravity is 9.81 m/s2. Find the total energy of the system.
November 21, 2010

U.S. History
Describe the policies of our government regarding immigration during the first 100 years of U.S. history.
November 19, 2010

Math
Tina had no money until she received her pay from her boss. Afterward, she spent 7.50 dollars on food every day from Monday through friday. She spent 30 dollars on clothes and 25 dollars to repair her bike. If she had 40.50 left over what would be a expression to find the ...
November 15, 2010

Math
Andy and Cathy run for class president. There were 598 votes but 36 of the votes were with drawn. How would I write an equation that could be use to find n the number of votes that represent a tie?
November 15, 2010

Science
Does blood bring cell things like oxygen and digested food?
November 15, 2010

Science
Does blood bring cell things like oxygen and digested food?
November 15, 2010

Science
Does blood bring cell things like oxygen and digested food?
November 15, 2010

Science
Does blood bring cell things like oxygen and digested food?
November 15, 2010

AP Chemistry
You did not completely vaporize the liquid when you heated it. Is that incorrectly high, incorrectly low, or unaffected by the following procedural changes?
November 4, 2010

physics
Suppose I have a circular metal disk spinning at a constant angular velocity. Now imagine near to, but not in contact with the first disk, I have an identical metal disk spinning at the same angular velocity but in the opposite direction (ie. W1 = -w2) and the surfaces are ...
November 1, 2010

eng 155
i found in this order from top to bottom really, rapidly, slowly, firmly, badly, loudly, shamelessly, wildly, can't. and i think i am missing one, sorry if i am to late
October 29, 2010

physics
Suppose I have a circular metal disk spinning at a constant angular velocity. Now imagine near to, but not in contact with the first disk, I have an identical metal disk spinning at the same angular velocity but in the opposite direction (ie. W1 = -w2) and the surfaces are ...
October 29, 2010

Physics
Suppose I have a circular metal disk spinning at a constant angular velocity. Now imagine near to, but not in contact with the first disk, I have an identical metal disk spinning at the same angular velocity but in the opposite direction (ie. W1 = -w2) and the surfaces are ...
October 29, 2010

Biology
During the cell cycle, when does mitosis occur?
October 28, 2010

physics
Hurricanes can involve winds in excess of 120 km/h at the outer edge. Make a crude estimate of the energy of such a hurricane, approximating it as a rigidly rotating uniform cylinder of air (density 1.3 kg/m^3) of radius 120 km and height 4.5 km. Make a crude estimate of the ...
October 25, 2010

PHYSICS ---HELP!
I keep getting 0.68 ?????
October 25, 2010

math
Obtain the Taylor series in powers of x + 1 for f(x) = x/(2 + x), giving the general term and the interval of convergence.
October 19, 2010

chem
5. The LC50 for fluorine is 0.29 mg/m3. What is this in ppm at 25 oC and 1 atm pressure? How does this compare to the PEL?
October 17, 2010

math
try... value = low + ((high - low)(x%))
October 13, 2010

math
high=10 low=5 value=8 what is the formula to identify where 'value' is relative to the high and low (range)
October 13, 2010

chem
What is the structure of the addition polymer that results from polymerization of 2-chloropropene.
October 7, 2010

statistics
12 light bulbs are tested to see if they last as long as claimed. 3 of them fail. 2 light bulbs are selected at random without replacement. find the probablility that at least one of the 2 selected failed the test.
October 7, 2010

chem
Recycling of PET soft drink bottles involves heating with methanol and an acid catalyst to liberate ethylene glycol and dimethylterphthalate (methyl ester of pthalic acid). These can then be used as monomers to make new PET products. Write an equation for this recycling reaction.
October 5, 2010

college physics
Let the radius of the circular segment be 108 m, the mass of the car 1861 kg, and the coefficient of the static friction between the road and the tire 0.9. The banking angle is not given. Find the magnitude of the normal force N which the road exerts on the car at the opti-mal...
October 5, 2010

chem
Recycling of PET soft drink bottles involves heating with methanol and an acid catalyst to liberate ethylene glycol and dimethylterphthalate (methyl ester of pthalic acid). These can then be used as monomers to make new PET products. Write an equation for this recycling ...
October 5, 2010

business
Which pair of accounts follows the rules of debit and credit, in relation to increases and decreases, in the same manner? A. Accounts Payable and Rent Expense B.Repair Expense and Notes Payable C.Prepaid Insurance and Advertising Expense D.Service Revenues and Equipment
September 28, 2010

business
thank you
September 28, 2010

business
Which measure would a long-term creditor be least interested in reviewing? a.free cash flow b.debt to total assets ratio c.current ratio d.solvency measure
September 28, 2010

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