Questions Asked on
October 29, 2007

Chemistry
A bullet weighing 235 grains is moving at a speed of 2.52 X 10^3 ft/s. Calculate the kinetcic energy of the bullet in joules ahd in calories. One grain equals 0.0648 g. Can someone help me out on this please K. E.= 1/2 mv2 . Convert m to kg Convert ft/sec
asked by Lauren 
Algebra II
A train left Podunk and traveled north at 75 Km/h. Two hours later, another train left Podunk and traveled in the same direction at 100 km/h. How many hours had the first train traveled when the second train overtook it?
asked by Alan 
Statistics
The International Olympic Committee states that the female participation in the 2000 Summer Olympic Games was 42%, even with new sports such as weight lifting, hammer throw, and modern pentathlon being added to the Games. Broadcasting and clothing
asked by LT 
Chemistry
Hydrogen sulfide, H2S is a foul smelling gas. It burns to form sulfur dioxide. 2H2S +3O2 > 2N2 +6H2O Delta H=1036kJ Calculate the enthalpy change to burn 26.7 g of hydrogen sulfide.
asked by Lauren 
Chemistry
if you could just help me set them up the would do me some good. Thanx A. In the single reaction of chlorine and potassium bromide, how many grams of potassium chloride can be produced from 200.g each of chlorine and potassium bromide? Identify the
asked by Monte' 
Statictics
6. In 2000, the United Nations claimed that there was a higher rate of illiteracy in men than in women from the country of Qatar. A humanitarian organization went to Qatar to conduct a random sample. The results revealed that 45 out of 234 men and 42 out
asked by LT 
Physics
"It takes a force of 109 N to lift a stone straight up. This force gives the stone an acceleration of 12 m/s^2. Calculate the mass of the stone." My physics teacher tried to explain this problem to us, but he explained it so confusingly that I still don't
asked by Emily 
Elementary Statistics help
It is generally believed that electrical problems affect about 14% of new cars. An automobile mechanic conducts diagnostic tests on 128 new cars on the lot. a. Describe the sampling distribution for sample proportion by naming the model and telling its
asked by LT 
Chemistry
6ClO2 + 3H2O > 5HClO3 + HCl a) If 71g of ClO2 is mixed with 19g of water, what is the limiting reactant? b) What mass of HClO3 is expected in part (a)? c) How many molecules of HCl are expected in part (a)? I completed part a and b but got stuck on part
asked by Marty 
CHEM
Butane, C4H10, is a component of natural gas that is used as fuel for cigarette lighters. The balanced equation of the complete combustion of butane is: 2C4H10(g) + 13O2(g)>8CO2(g) + 10H2O(l) At 1.00atm and 23*C , how many liters of carbon dioxide are
asked by K 
Chemistry
Hydrogen H2, is used asa rocker fuel. The hydrogen is burned in oxygen to produce water vapor. 2H2 + O2 > 2H2O Delta H= 484 kJ What is the enthalpy change per gram of hydrogen.
asked by Lauren 
Physics..please help
A car is traveling at 20m/s when it pulls out to pass a truck that is traveling at only 18m/s. The car accelerates at 2.0m/s^2 for 4.0 s and then maintains this new velocity. First it asked me to calculate the distance during acceleration so I used d =
asked by Alex 
English
What are similarities and differences of Sea and Prairie?
asked by Hannah 
economics
Tell whether each of these expenses of a textile mill is a fixed cost or a variable cost, and why. (a) repairs to a leaking roof (b) cotton (c) food for the mill's cafeteria (d) night security guard (e) electricity
asked by anonymous 
History
Why were the swahili traders in the east a threat to King Leopold's Congo?
asked by amber 
Algebra
The larger of two positive integers is five more than twice the smaller integer. The product of the integers is 52. Find the integers. Must have an algebraic solution.
asked by Thomas 
History
Why are drought desertification and overpopulation among the causes for the crisis/conflict in darfur? What is the connection of genocide and ethnic cleansing to darfur?
asked by anonymous 
Statictics
2. Herpetologists (snake specialists) found that a certain species of reticulated python have an average length of 20.5 feet with a standard deviation of 2.3 feet. The scientists collect a random sample of 30 adult pythons and measure their lengths. In
asked by LT 
Help
The countries of Europe report that 46% of the labor force is female. The United Nations wonders if the percentage of females in the labor force is the same in the United States. Representatives from the United States Department of Labor plan to check a
asked by LT 
physical science
An elevator lifts passengers 30m in 24sec. The power is 15,000W. What is the total weight of the elevator and passengers?
asked by September 
Global warming
1) Explain the effect of clouds on global cooling. 2) Describe the relationship between carbon dioxide levels and deforestation. 3) Explain how rising global temperatures are connected to rising sea level.
asked by jason 
math
Alfonso knows that the distance across the field from his home to Carla's home is 50 meters. A nice place to pick flowers is 40 meters directly east of his home and directly south of Carla's home. How far from Carla's home is the flowerpicking spot?
asked by Mary 
Global warming
Explain the effect of clouds on global cooling Describe the relationship between carbon dioxide levels and deforestation. Explain how rising global temperatures are connected to rising sea level.
asked by jason 
physics
The path of a projectile fired at a 30 degree angle to the horizontal is best described as 1.parabolic 2.linear 3.circular 4.hyperbolic
asked by lin 
reading
can you please help me unscramble these words vamselsveeyttitina and swypl thank you
asked by madison 
women studies
Hello, I need help in finding some answers to this question? How are families both places of comfort, security, and nurture, and at the same time places of domination, conflict, and violence. Thanks
asked by Beth 
Maths
3 part question. 1. 4 peaches and 3 grapefruit cost £1.30. Write down an algebraic equation to illustrate this. 2. 2 peaches and 4 grapefruit cost £1.20. Write down an algebraic equation to illustrate this. 3. Find the cost of 3 peaches and 2 grapefruits
asked by Gavin 
world history
Does this sound good so far? i need an opinon I researched the genocide in Rwanda for my paper. In Rwanda, there are two major groups: The Hutu and the Tutsi. Even though the Hutu mad up 90% of the population in Rwanda, the Tutsi were basically the
asked by kelsey 
Economics
Sorry, it's long. I've tried everything to solve this, I have no clue how they got any of the MR figures, I calculated MR and I got 0.5. Help please. * A drug company currently sells 3 million AIDS treatments in rich countries at P = $80 per treatment. *
asked by Nathan 
science
Name on example of each: ecological rehabilitation ecological mitigation ecological reclamation Please and thanks!
asked by Charlotte 
math
A 5% alcohol solution is mixed with 15% alcohol solution to make a 25mlof a 9% solution. How much of each alcohol solution is used?
asked by elisa 
About previous Physics post/answer from Bobpursely
So do you mean to say....Ferris wheels use motors, therefore meaning that electrical energy is present. Electrical energy from the motor is then turned into kinetic energy. Electricity, generated from a switch and wires, travel through the motor which
asked by Serena 
math
Solve the following equations giving any roots in terms of pi in the .......? interval 2pi ≤ 0 ≤ 2pi. a) 2cos²Θ + sin²Θ = 0 b) 2cos²Θ + sin²Θ = 1 c) 2cos²Θ + sin²Θ = 2
asked by raj 
science 6th grade
Q1: What rock comes before quartzite in the rock cycle? What rocks or rock could come just after quartzite in the rock cycle? Q2: A geologist finds a course grained rock with crystals arranged in rows. What can the geologist infer about how this formed and
asked by Wali 
Chemistry
If a question in the exam comes and asks me For Example what is the relative formaula mass of Copper Oxide Aluminiuim oxide Carbon Dioxide Is there a concept about the oxides or how do we work out the formula ?
asked by Ernest Rutherford 
Physics
the hubble telescope has a mass of 1.5 x 10^4 kg and its orbiting the earth 596 km above the ground surface.the earths radius is 6.38 x 10^3km. CAlculate a)the force of gravitation on the telescope due to the earth's pull. given: G=6.67 x 10^11Nm/kg and
asked by johnny 
for Drbob222
how do I calculate pressure exerted by H2 in a Mg and HCl reaction? (weighing by redox)
asked by Rebecca 
Calculus Check
A survey of one thousand people found that 70% of the people have a CD player, 85% have a telephone, and 45.2% have a computer. At least how many people have all three objects? Is the answer 152?
asked by Matt 
ENGLISH 11
where are you going my mother asked you know you have to tell me where you're going before you go out i'm going out i replied where my mother demanded i'm just going to hang out with some friends.i need to know exactly where you're going and who you're
asked by ERIC 
economics
A firm has two factories, one twice as large as the second. As the number of workers at each factory increases, which factory will experience diminishing returns first?
asked by anonymous 
economics
Output Fixed Cost Variable Cost 1 $5 $10 2 $5 $27 3 $5 $55 4 $5 $91 5 $5 $145 (a) What is the total cost when output is 2? (b) What is the marginal cost of the third unit? (c) How much should this firm produce if the market price is $24?
asked by anonymous 
American History
Describe the social, economic, and political composition of the decade of corporate greed and how it affected the political climate of the 1980s. I'm having trouble catagorizing "social", "political" and "economic".
asked by Gwen 
physics
A 2000 kg car negotiates a curve of radius 40.0m on a level road. The static friction coefficient between the tires and the pavement is 0.7. Calculate the maximum force of static friction for the car and the maximum speed with which it will be able to
asked by johnny 
physics
A 3.3 kg wooden block is placed on 22 degree inclined plane and is connected by a string that passes over a light friciton less pulley at the top of the incline and then attached to a hanging 3.0kg block.If the coefficient of static friction bet the 1st
asked by Sam 
Math
I need help with these questions: Copy the equations. Add brakcets to make each one true. a) 7  5 to the 4th power divided by 8 = 2 b) 3 x 2  5 to the 10 power = 1 c) 39  4 + 6 divided by 3 to the 2nd power = 3
asked by Sandra 
Lunch
What should i take for lunch tomorro? i get hungry lots
asked by Emma 
ib math studies
i need a project idea for the internal assesment project. I want it to do something with sewing, like using equations in making a garment.
asked by Yousra 
human risk assessment
Equal concentrations of heptachlor, a known human carcinogen, are found at two different sites. (a) The incremental risk is the same at the two sites (b) The incremental risk is different at the two sites (c) The incremental risk at the two sites might be
asked by Thano 
physical science
An elevator lifts passengers 30m in 24sec. The power is 15,000W. What is the total weight of the elevator and passengers?
asked by September 
bones
how many bones does a teenager have?
asked by Anonymous 
World History
what are the most important events that happened in the genocide in rwanda?
asked by HELP PLEASE! 
Chemistry
with a platinum catalyst, ammonia will burn in oxygen to gove nitric oxide NO. What is the enthalpy change for the following reaction? NO + 3/2 H2O > NH3 + 5/4 O2
asked by Lauren 
english
How do I know if a syllable is stressed or unstressed?
asked by Derek 
Chemistry
Is the relative Formula mass for Aluminium Oxide simply : Al = 27 , O = 16 27+16 = 43?
asked by Disney man 
maths
The diagram shows part of a regular polygon. work out how many sides the polygon has. (it is 156 degrees).
asked by corinna 
chemistry
for a manometer flask diagram, if ha = 134 mm, how do I convert to torr, Pa, and atm with the right amount of sig figs? Related to sig figs, how do I get the right amount of sig figs (which is 2) with 8339?
asked by Avonlea 
spanish
Cambie las frases en el presente a mandatos familiares. Incluya los pronombres cuando sea posible. MODELO: No comes los dulces. > No los comas. 1. Tienes prisa. 2. Te duermes temprano. 3. Haces la cama.
asked by Pat 
Math
what is 10^2? 10 to the power of negative 2
asked by Mary 
Science repost for iiii
science  iiii, Monday, October 29, 2007 at 8:08pm What test would you need to perform to prove that it is the combination of glucose and the Glucose Indicator Solution that changes color when heated and not just the glucose or the Glucose Indicator
asked by Ms. Sue 
math
Sorry the question didn't come out right. It was supposed to read. 9k + 6 is < or equal to 39.
asked by Ellen 
History
explain how the European desire for profit affected the people of the Congo.
asked by amber 
FRENCH
Last part of the story.. can someone proofread? Thanks! Especially to SraJMcGin! Le Grinch restant a indiqué Markey le suivre et il l’a conduit à une pièce avec aucunes fenêtres et aucuns sols. La pièce était remplie à ras bord des fées et des
asked by Jo 
english
what are examples of fate? like movies/books one example is Final Desitnation 3 does anybody have any other ones?
asked by helpp me! 
maths
The population of a country is 10 million in 1997 and increasing at a rate of 0.6 million per year. The average annual income of a person during 1997 was 16000 dollars per year and increasing at a rate of 800 dollars per year. How quickly was the total
asked by anshu 
math
How would you express f(x) = cos3(x) in terms of first powers only? Please explain the steps
asked by raji 
math
For what values of s will the limit of x approach infininty for lnx/x^s.
asked by popy 
math
1. 4x^213x=12 I need to solve this problem by factoring or using the quadtratic formula. I am stuck when using the quadtratic formula method. Please advise how to do this. 2. 5x^2+42=0 How many roots exist in this equation and what type are they?
asked by bob 
Spanish
Question #3 Cambie las frases en el presente a mandatos familiares. Incluya los pronombres cuando sea posible. MODELO: No comes los dulces. > No los comas. 1. Tienes prisa. 2. Te duermes temprano. 3. Haces la cama.
asked by Pat 
calculus
For a function f, let f*(x) = lim as h→0 be [f(x+h)  f(xh)]/h a) Determine f*(x) for f(x) = cosx b) write an equation that expresses the relationship between the functions f* and f` where f` denotes the usual derivative of f
asked by Anonymous 
for Drbob222
thanks but i do need help to solve the third part also, I did get these equations but don't know how to put them together to solve the third. thanks for helping further!
asked by Gavin 
Algebra
A tcar left Purm and traveled west at 70 km/h. Two hours later another car left purm and traveled east at 90km/h. How many hours had the first car traveled when they were 1420 km apart?
asked by Tom 
math
Is the greatest common factor of 4xsquared ycubed, 18xysquared answer  2xysquared?
asked by Tabby 
Math
factor each expression completely. if possible. Just checkin the * Ones 1. x^2+19X+90 * 2. x^216X+55 * 3. x^2^6x91 * 4. x^2+28x+195 * 5. x^229x+204 6. x^2+3x+154 7. 2x^25x42 8. 3x^213x+12 9. 5x^2+43x18 10. 6x^2+29x+35 Solve each equation 31.
asked by Monte' 
math
2y^2+15y+7
asked by melissa 
math
For the following problem we are asked to find an equation for the conic that satisfies the given conditions: 1. Ellipse, foci (0, 1), (8, 1), vertex (9, 1) For the solution I got: [(x – 4)^2]/25 + [(y + 1)^2]/3 = 1 Is this correct?
asked by suri 
math
dwrs can you show your work? Can figure out who you got the 3?
asked by Ellen 
economics
How does a firm calculate marginal cost?
asked by anonymous 
math
3x+4(x8)x=3/5(10x+15)
asked by asi 
finance
why is WACC important to an organization? b. What impact does WACC have on capital budgeting and structure?
asked by kim wilson 
math
How would you express f(x) = cos3(x) in terms of first powers only? Please explain the steps
asked by Anonymous 
Chem
I don't get how to do this: What is the pH of the solution created by combining 11.30 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? What are the pH values if you take into account that the 8.00 mL of
asked by Anne 
Social Science
What are the most important facts to include when writing an essay on the genocide in Rwanda?
asked by kelsey 
Health
When people with diabetes get injured(break a bone, get scraped,etc.) why does it take longer for their wounds to heal compared to someone without diabetes?
asked by Molly 
english
I'm writing 'actor's notes' for act 2, scene 4 of 'Twelfth Night' Orsino And what's her history? Viola A blank, my lord. She never told her love, But let concealment like a worm i'th'bud Feed on her damask cheek. She pined in thought, And with green and
asked by Anonymous 
Physics
Continue...previous question b)what normal force would the car experience on the top of a circular hill of radius 20.0m when it reaches the near horizontal section of the vertical curve with a speed of 12.0 m/s ? Draw app. free body diagram.
asked by johnny 
English
In what stories have characters claim the accomplishments of another?
asked by kelly 
Science
Combined with coal,this element is used in weapons?
asked by Tesse 
Math
Would a scatter plot relating to the number of sweaters you own and your age have a positive or negative
asked by Tabby 
spelling
not a smile, but a
asked by Zack 
MATH
how do you make a circle graph?what are the steps?i am a grade 7 student,I need help. Thanks
asked by ADRIANA 
graphs
If I have info. that fits into distinct catergories and want to compare totals what kind of graph should I use? A bar graph?
asked by Riley 
math
draw a shape that can be modelled by the expression 5 x 3  2 to the 2nd power. Write a problem for the expressin and evaluate it. Help.....please....!!! ;(
asked by Sandra 
math
Lowvoltage lighting is a popular feature of landscaping. Two pathways meet at 30 degrees to each other. One pathway has the lighting, and the first light is placed where the two paths meet. The distance between successive lights is 5m, and each has a
asked by liz 
social studies
In most countries, what is the main responsibility of the government to create?
asked by Kira 
science
5 reasons that the eagle helps the ecosystem?
asked by Madi 
Math
9k+6
asked by Ellen 
history
How were ehtnic groups in the Central African region distinguished?
asked by amber 
trigiometry
what is the basic unit in trigiometry
asked by amber 
business
Why do you think some investors choose to buy index options?
asked by ajo 
science
what is the word for " to move freorm one object to another
asked by naureen 
Social Studies
Any sites on Bishop Tutu?
asked by Samantha 
science
Explain the main factors that affect the Earth’s temperature.
asked by jason 
s.s
what were the perspectives of the loyalist in the boston tea party
asked by Anonymous 
math
Find the integral of:? i) ∫[(e^[x]) / (3e^[3x]  3e^[2x])] and ii) ∫[(e^[2x]) / (3e^[3x]  3e^[2x])]
asked by rasi 
social studies
need help on a speach about a leader with strong will
asked by :)tegz eibz 
maths
Waht is 12 to the power 12 and a half
asked by Thamiline 
ENGLISH
WHAT ARE EXAMPLES OF ARISTOTELIAN TRAGEDY ,SHAKESPEAREAN TRAGEDY AND HEGELIAN TRAGEDY
asked by NIQUE FROM DALLAS 
D+T; (Control systems); mechanisms
is aircraft wings 1st class? if not then what is the answer?
asked by Danielle 
alternative health
what are the cell builders
asked by ash 
Psychology
What is the controversy surrounding full body scans and what is the dilemma this is creating for physicians? What are the dangers of full body scans?
asked by Christian 
critcal thinking
how does Critical thinking affects my writing
asked by neenee01 
maths
emma draws this diagram. She says it shows part of a regular polygon. Explain how you can tell that Emma must have made a mistake (it is a 158 degree angle)
asked by corinna