Total # Posts: 593
A freight train has a mass of 1.8 × 10 7 kg. If the locomotive can exert a constant pull of 6.2×10 5 N, how long does it take to increase the speed of the train from rest to 70 km/h? Answer in units of min.
January 5, 2011
Elisa is a teenage girl who has trust issues with others. She does not like to tell individuals every fact of her life. What could Elisa do to help her trust people more and just be open with them? ok. I think that maybe she could start practising at home how to be more open, ...
November 24, 2010
ok. I think that maybe she could start practising at home how to be more open, like she should be open with her siblings first, only then will she be able to have faith on her friends. Any suggestions?
November 24, 2010
Elisa is a teenage girl who has trust issues with others. She does not like to tell individuals every fact of her life. What could Elisa do to help her trust people more and just be open with them?
November 24, 2010
Sally is a teenage girl. She is never seemed to be heard of. If she ever has something to state, she is always cut short. This happens to her all the time and she can't help but speculate if it's done deliberatly. This makes sally feel less essential. What should she do?
November 23, 2010
A regular polygon has an exterior angel measure of (x+3) Degrees and an interior angle measure of (13x-33) degrees Find the measure of each angle How mant sides does this polygon have?
November 22, 2010
How do I do this? I am very lost. If you live in California, the decision to buy earthquake insurance is an important one. A survey revealed that only 133 of 337 randomly selected residences in one California county were protected by earthquake insurance. Calculate the ...
November 9, 2010
1) Friendship is also very important for me. 2) In the future, I'd like to become a chemist; I also would like to graduate and live abroad, maybe in Asia or America. ***3) This sentence is confusing as it sounds as if you are either discussing more than two brothers or ...
October 23, 2010
The U.S. Food and Drug Administration lists dichloromethane (CH2Cl2) and carbon tetrachloride (CCL4) among the many cancer-causing organic compounds. what are the partial pressures of these substances in the vapor above a mixture containing 1.75 mol of CH2Cl2 and 1.95 mol of ...
October 18, 2010
I'm in 7th grade and I'm doing a lesson plan for the book because of winn-dixie. For the final project I'm going to have students create a diorama that represents the primary or secondary themes in the book. From an adults perspective What do you think the students...
October 15, 2010
Highway safety engineers build soft barriers so that cars hitting them will slow down at a safe rate. A person wearing a seat belt can withstand and acceleration of -3.0 102 m/s2. How thick should barriers be to safely stop a car that hits a barrier at 106 km/h?
September 26, 2010
college health care quality mangement
Please explain three things you have learned about quality and performance . What impact have these three things had on the evolution of health care quality programs? Please substantiate your answers with examples.
September 26, 2010
There is a small circle on the left overlapped by a larger circle to the right. The problem reads:If all four sided shapes were here (meaning the smaller circle to the left, and all yellow shapes were here meaning the overlapping larger circle to the right. What would go in ...
September 8, 2010
A firm's owners' equity at the start of the year is $700,000. During the year, the firm earned $500,000 in revenue and incurred $400,000 in expenses, what would be the balance in equity at the end of the year.
August 28, 2010
Which of the following structures are regions of the lung? A. Frontal, maxillary, sphenoidal, ethmoidal B. Eustachian, pharynx, bronchi C. Cilia, adenoids, mucous, epiglottis D. Apex, base, hilum
August 22, 2010
suppose you have samples of two metals,A and B. Use the data below to determine which sample occupies the largest volume.. A> mass 25g density 10 g/ml B> mass 65g density 4.0 g/ml
August 21, 2010
If the elasticity of demand for cocaine is −.2 and the Drug Enforcement Administration succeeds in reducing supply substantially, causing the street price of the drug to rise by 50%, buyers will spend less on cocaine.
August 14, 2010
A sporting goods store has estimated the demand curve for a popular brand of running shoes as a function of price. Use the diagram to answer the questions that follow. a. Calculate demand elasticity using the midpoint formula between points A and B, between points C and D, and...
August 7, 2010
A firm is planning to set up an assembly line to assemble 40 units per hour. Assume that 57 minutes per hour are productive. The time to perform each task and the tasks preceding each task are as follows: Task Preceding Task Time to Perform (Min) A - 0.69 B A 0.55 C B 0.92 D B...
August 1, 2010
do you know any website that can help me with all this 1.Language Arts, Writing, in two parts. Part 1: Organization, Sentence Structure, Usage, and Mechanics Part 2: Essay 2.Language Arts, Reading Poetry Drama and Fiction Non-fiction ...
July 22, 2010
Fixed Company produces a single product selling for $30 per unit. Variable costs are $12 per unit and total fixed costs are $4,000. What is the contribution margin ratio? (Points :1) 1.67 2.50 0.40 0.60
May 16, 2010
Canine Company produces and sells dog treats for discriminating pet owners. The unit selling price is $10, unit variable costs are $7, and total fixed costs are $3,300. What are breakeven sales? (Points :1) $11,000 $4,714 $3,300 $7,700
May 16, 2010
Case 1. Steve and Linda Hom live in Bartlesville, Oklahoma. Two years ago, they visited Thailand. Linda, a professional chef, was impressed with the cooking methods and the spices used in the Thai food. Bartlesville does not have a Thai restaurant, and the Homs are ...
May 15, 2010
Fracture Math words
3/5 of money is a unit. --------- 3/4 of cube is a young bear. ------- 5/6 of factor is a movie star. ------- 3/7 of segment are people. --------- 1/3 of volume is a pronoun.
May 11, 2010
A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. Explain the chemical process that occurred in his...
May 2, 2010
8th grade chemistry
2CuSO4 what does the information above represent? (A) two molecules made of one copper atom, one sulfur atom, and four oxygen atoms. (B) two elements made of one copper atom, one sulfur atom, and four oxygen atoms. (C) two copper atoms, one sulfur atom, and four oxygen atoms...
April 21, 2010
c2h4(g) + 3O2(g) -> 2 CO2 (g) + 2 H2O (g) What volume of oxygen will react with 18 ml of ehtylene, c2h4, assuming that the gases are present at the same temperature and pressure?
April 19, 2010
You have 1.600g mixture of NaHCO3 and Na2CO3. You find that 11.60 ml of 2.00M HCl is needed to convert the sample completely to NaCl, H2O and CO2. NaHCO3 (aq) + HCl (aq) -> NaCl (aq) + H2O (l) + CO2 (g) Na2CO3 (aq) +2HCl (aq) -> 2NaCl (aq) + H2) (l) + CO2 (g) What volume...
April 17, 2010
write a program that asks the user to enter today's sales rounded to the nearest $100 for each of five stores. the program should then display a bar graph comparing each store's sales. create each bar in the graph by displaying a row of astericks. each asterick should ...
April 5, 2010
When methanol undergoes complete combustion, the products are carbon dioxide and water. 2CH3OH (l) + 3O2(g) --> 2CO2(g) + 4H2O (g). How much water ( in grams) can you maximally produce if you burn 50g of methanol? In real experiment, you isolate 10 mL of water (d=0.98 g/cm3...
March 22, 2010
One of the world's fastest roller coasters is located in a theme park in Valencia, California. Riders go from 0 to 100 miles per hour in 7 seconds. Find the acceleration of the roller coaster during this time interval in miles per second squared.
March 8, 2010
How would you write the steps out to this problem in words? The answer is suppose to be 1235/48. Thank you for all your help. Greatly appreciated!! (-5)^2+(2/3-1/4)^2+5/2^2/(-3/2)^2
January 26, 2010
Can you please explain to me what this means. Thank you As the characters evolve, Erdrich reveals her major theme--the diminishing hold the distant past has on successive generations as each generation creates and feeds on its own past.
December 13, 2009
Can you please tell me what this is trying to say. I don't understand it. It's a paragraph out of a book. Its really confusing to me. Thank you for your help. Sometimes she was hard and apparently without feeling at all; sometimes she was affectionate and rashly ...
October 22, 2009
Altitude of 575m with zero initial velocity; 8.0s she falls freely; rate of descent et 15m/s^2 until her rate of descent reaches 5.0m/s.At this point she adjust her rocket engine control to maintain that her rate of descent until she reaches ground. How much time is required ...
October 8, 2009
The Goodyear blimps, which frequently fly over sporting events, hold approximately 1.90×10^5 ft^3 of helium. If the gas is at 25 C and 1.0 atm, what mass of helium is in the blimp?
October 4, 2009
A 1-L flask is filled with 1.25g of argon at 25C . A sample of ethane vapor is added to the same flask until the total pressure is 1.45amt .What is the partial pressure of argon, Par, in the flask?
October 3, 2009
A cylinder with a movable piston contains 2.00g of helium, , at room temperature. More helium was added to the cylinder and the volume was adjusted so that the gas pressure remained the same. How many grams of helium were added to the cylinder if the volume was changed from 2....
October 3, 2009