Tuesday
May 21, 2013

# Homework Help: Health: Physical Fitness

Recent Homework Questions About Physical Fitness

english
How can I write a Persuasive Essay Outline on Physical Eduation?
Monday, January 24, 2011 at 12:17am

physical
A harmonic wave on a string moves along the x-axis according to: î(x,t) = 5.0 (cm) sin[ (2.5m-1) x - (63s-1) t ] At x = 1.0 m when t = 2.2 s the speed of the oscillations on the string is closest to ... 25.2 m/s 4.55 m/s 3.15 m/s 2.27 m/s 1.67 m/s
Sunday, January 23, 2011 at 7:47pm

physical
At a distance of 30 m the noise from the engine of an jet has an intensity level of 130 dB. At this level, you will be in pain and your ears will hurt. That's why this intensity is know as the "pain threshold". How far do you have to be from a jet (total distance...
Sunday, January 23, 2011 at 7:46pm

Physical science
Calculating the total energy required to break NH3 bond?
Sunday, January 23, 2011 at 4:14pm

physical science
What is the mass of a 10.0 cm3 cube of copper?
Saturday, January 22, 2011 at 8:05pm

physical science
How many hours are required for a radio signal from a space probe near the dwarf planet Pluto, 6.00 x 10 (to the 9th) km away, to reach Earth? Assume that the radio signal travels at the speed of light, 3.00 10 (to the 8th) m/s.
Saturday, January 22, 2011 at 8:04pm

chemistry
write three physical change and three chemical change and their similarity and give examples
Wednesday, January 19, 2011 at 11:39am

chemistry
write three physical change and three chemical change and their similarity and give an examples
Wednesday, January 19, 2011 at 11:36am

Emploument English
Working in the construction world usually pays betta than mini mum wage but has some physical demands true?
Tuesday, January 18, 2011 at 8:10pm

Physical science
A body falls from rest for 5seconds calculate its velocity-time graph of its motion (from t= 0s to t=5s)
Tuesday, January 18, 2011 at 12:54pm

physical
The radius of the track is 50 meter.He starts at point A and maintain a constant speed.He finishes three completed round in 9 minutes.What was his displacement after three rounds.
Tuesday, January 18, 2011 at 11:47am

physical science
the attraction or pull of a person"s body toward the earth by the earth is called weight.the reaction to this force is the:
Monday, January 17, 2011 at 3:56pm

physical chemistry
What is a typical speed for a N2 molecule in this room? a) 50 m/s b) 500m/s c) 1500 m/s
Sunday, January 16, 2011 at 3:10pm

English
I forgot to include these other sentences. I hope you can have a look at them, too. 1) If death, unlike sleep, is an end in itself, that is all earthly troubles are finished with it, then it is very desirable. As in sleep there is the possibility of dreaming, Hamlet wonders if...
Sunday, January 16, 2011 at 2:08pm

English
Can you please check these sentences as a comment to the famous soliloquy "To be or not to be"? 1)Hamlet wonders whether it is better to leave things as they are bearing the “slings and arrows” of outrageous fortune or to make a stand against his mass of ...
Sunday, January 16, 2011 at 2:03pm

physical
V1=3m3,P1=1.2KPa T=const How much will be change P if A) volume reduced to 1.5 ,2 and 2.5 B) volume increase to 1.5 ,2 and 2.5
Sunday, January 16, 2011 at 10:17am

Physical Science
If we changed our speed limit to metric, what would probably replace 10.mi/h? (please round to th enearest 1km/h.)
Thursday, January 13, 2011 at 12:04pm

Physical Science
A quantity of water is poured into a graduated cylinder, which then reads 145ml. what is the mass of the water in kilograms?
Thursday, January 13, 2011 at 12:03pm

Physical Science
To create a supernaturated solution, a student heats a beaker of water on a hot plate and adds sugar until no more sugar will dissolve. The student then strains the solution through a funnel using filter paper and allows the solution to cool. Name two safety procedures the ...
Wednesday, January 12, 2011 at 3:45pm

Physical Science
To create a supernaturated solution, a student heats a beaker of water on a hot plate and adds sugar until no more sugar will dissolve. The student then strains the solution through a funnel using filter paper and allows the solution to cool. Name two safety procedures the ...
Wednesday, January 12, 2011 at 2:16pm

English
I forgot to include these few more sentences. Thank you. 1) As tradition my uncle dressed up (disguised himself as?) as Nikolaus and at midnight sharp he knocked at our door and brought us all the presents. 2)We didn't exchange the presents lying under the Christmas tree ...
Tuesday, January 11, 2011 at 6:15pm

physical science
To create a supernaturated solution, a student heats a beaker of water on a hot plate and adds sugar until no more sugar will dissolve. The student then strains the solution through a funnel using filter paper and allows the solution to cool. Name two safety procedures the ...
Tuesday, January 11, 2011 at 5:18pm

Physical Science
To create a supernaturated solution, a student heats a beaker of water on a hot plate and adds sugar until no more sugar will dissolve. The student then strains the solution through a funnel using filter paper and allows the solution to cool. Name two safety procedures the ...
Tuesday, January 11, 2011 at 4:55pm

Physical Science
To create a supernaturated solution, a student heats a beaker of water on a hot plate and adds sugar until no more sugar will dissolve. The student then strains the solution through a funnel using filter paper and allows the solution to cool. Name two safety procedures the ...
Tuesday, January 11, 2011 at 2:02pm

History
Define physical region and give 3 examples
Monday, January 10, 2011 at 10:20pm

physical sciene
1) A boy weighs 392 Newtons.What is his mass? 2) A baby weighs 8.0 pounds. What is his mass in slug? 3) An object has a mass of 50 grams. What is its weight in dynes? 4) An object has a mass of 75 grams. What is its weight in newtons?
Monday, January 10, 2011 at 7:07pm

science
here are some science questions I've been trying to do for over an hour and i just cant figure them out! 1.how does a fan convert energy? 2.what happens to matter during both a physical and chemical change? 3.give an example of a simple closed system 4. in a fire, why does...
Monday, January 10, 2011 at 4:01pm

physical
Two vehicles are approaching an intersection. One is a 2500- kg pickup traveling at 14.0 m/s from east to west (the negative x-direction), and the other is a 1500-kg Mercedes going from south to north (the positive y-direction at 23.0 m/s). (a) Find the x and y components of ...
Monday, January 10, 2011 at 12:22pm

physics
a physical pendulum consists of a uniform solid disk (of radius R = 42.0 cm) supported in a vertical plane by a pivot located a distance d = 13.0 cm from the center of the disk. The disk is displaced by a small angle and released. What is the period of the resulting simple ...
Sunday, January 9, 2011 at 4:51pm

physical education
there are three types of components of body type (somatotype). give the three components in the correct order
Sunday, January 9, 2011 at 12:53pm

psychology
briefly describe the developmental needs (physical,cognitive,social,emotional,cul​tural) at each stage of development over the lifespan
Saturday, January 8, 2011 at 4:53pm

Physical Science
A 15 Kg object that is free falling has a total mechanical energy of 13,230 Joules. (A) From what height was the object dropped? (B) What is the velocity of the object when it hits the ground? (C) How long does the object fall?
Saturday, January 8, 2011 at 3:13pm

Physical Science
Compare a benifit and a risk of radiation therapy in the medical field.
Friday, January 7, 2011 at 2:39pm

Physical Science
Four groups of rats are tested in a lab. Group 1 is given a special hornmone for muscle growth. Group 2 is given a special multivitamin diet. Group 3 recieves both the hormone treatment and the multivitamin diet. Group 4 does not recieve any extra treatment or special diet. ...
Friday, January 7, 2011 at 2:02pm

Physical Science
To create a supernaturated solution, a student heats a beaker of water on a hot plate and adds sugar until no more sugar will dissolve. The student then strains the solution through a funnel using filter paper and allows the solution to cool. Name two safety procedures the ...
Friday, January 7, 2011 at 2:02pm

Physical Science
To create a supernaturated solution, a student heats a beaker of water on a hot plate and adds sugar until no more sugar will dissolve. The student then strains the solution through a funnel using filter paper and allows the solution to cool. Name two safety procedures the ...
Thursday, January 6, 2011 at 5:16pm

Physical Science
Compare a benifit and a risk of radiation therapy in the medical field.
Thursday, January 6, 2011 at 4:30pm

Physical Science
Four groups of rats are tested in a lab. Group 1 is given a special hornmone for muscle growth. Group 2 is given a special multivitamin diet. Group 3 recieves both the hormone treatment and the multivitamin diet. Group 4 does not recieve any extra treatment or special diet. ...
Thursday, January 6, 2011 at 4:26pm

physical science
Balance this chemical equation. ___ K(s) + ___H2O(1) >>>>> KOH(aq) + H2(g)
Wednesday, January 5, 2011 at 5:17pm

PHYSICAL SCIENCE
what is 21 degrees fahrenheit in celsius what is 1 degrees fahrenheit in celsius
Wednesday, January 5, 2011 at 5:08pm

early childhood
I need this sentence to sound right.>>>>> The description of this group is to promote spiritual and physical healthy lifestyle
Tuesday, January 4, 2011 at 8:25pm

Structure of the Earth
Explain Earth's layers by comparing Earth to a familiar object such as an avocado. How are the layers similar? How are they different? I dont really get this question...All I know is that they both have different layers consisting of different mix of materials. They have ...
Tuesday, January 4, 2011 at 6:48pm

English
Can you please help me rephrase these sentences? They sometimes don't seem to make sense at all. 1) Canterbury Tales is structured as a series of interlinked stories and is prefaced by a General Prologue. 2)The pilgrims are described in (??) their skills and in their ...
Tuesday, January 4, 2011 at 6:13pm

physical
Suppose an unknown substance has a melting temperature of 1,200 degrees Celsius and a density of 16.7 g/cm3. However, the different individual atoms that make up the element have very different melting temperatures and densities. Which is the unknown substance most likely
Tuesday, January 4, 2011 at 10:27am

physical science
16. When a bullet is fired from a rifle: mine is D A. the recoiling rifle and the bullet have the same kinetic energy and momentum B. the bullet has greater momentum and kinetic energy than the rifle C. the rifle has greater momentum and kinetic energy than the bullet D. they ...
Monday, January 3, 2011 at 6:43pm

physical science
a graduated cylinder is filled with water to a level of 40.0 mL. when a piece of copper is lowered into the cylinder, the water rises to 63.4 mL. find the volume of the copper sample.
Monday, January 3, 2011 at 5:21pm

physical science
jamal found an unusual rock in his school yard. give two examples of measurement he could take that might help him identify the type of rock
Monday, January 3, 2011 at 4:46pm

Physical Science
I have a really good grade in this class and I need to keep it that way. I am only asking to have my answers checked. I would like to graduate with honors so please help if you can. 1. A car traveling along the highway needs a certain amount of force exerted on it to stop. ...
Sunday, January 2, 2011 at 10:03pm

physical science
a force used to lift a 12-kilogram mass to a height fo 8 meters in 2 seconds does 1040 joules of work. how much force is used.
Sunday, January 2, 2011 at 7:56pm

Physical Science
I have a really good grade in this class and I need to keep it that way. I am only asking to have my answers checked. I would like to graduate with honors so please help if you can. 1. A car traveling along the highway needs a certain amount of force exerted on it to stop. ...
Sunday, January 2, 2011 at 7:11pm

OK so can u guys help me compare/contrast A Tale of Two Cities to A Christmas Carol by Charles Dickens.. like compare characters,plot,theme,or writing style.. so far I have got.... The most obvious similarity between A Tale of Two Cities and A Christmas Carol is the theme of ...
Sunday, January 2, 2011 at 12:13pm

physical science
when items float freely inside a space capsule, is it an example of Newton's law #1 or #3? As soon as the astronauts take off their helmets and gloves (after lift-off) in Apollo 13, the gloves float away. So is that an object in motion tends to stay in motion OR every ...
Sunday, January 2, 2011 at 1:09am

Physical Science
The only force acting on a satellite in its orbit around Earth is the force of gravity from Earth. Why does a satellite not fall down?
Sunday, January 2, 2011 at 12:00am

Biology
List and describe the steps involved when a gene in person's genotype is expressed to create a biochemical or physical characteristics that is a part of the persons phenotype.
Saturday, January 1, 2011 at 9:47pm

physical science
Helium has the lowest boiling point of the elements. The slightest change in temp can cause it to vaporize and expand. To prevent pressure explosions, a line from the tank has a "burst disk" in case a of sudden pressure increse. then the diaphragm would rupture and ...
Saturday, January 1, 2011 at 4:04pm

physical science
what physical law/s were used during the "burns" of Apollo 13 to adjust its path/trajectory and get it home? I know the thrusters used Newton's third law. What else?
Saturday, January 1, 2011 at 3:45pm

physical science
What physical law states: When an object nears a massive celestial object in space, it is attracted to its gravity
Friday, December 31, 2010 at 11:23pm

physical science
when an astronaut orbits the earth, and is falling in a circle around the Earth, is he/it creating a CENTRIFUGAL force or a CENTRIPETAL force?
Friday, December 31, 2010 at 10:48pm

Physical Science 2
The attraction or pull of a person's body toward the earth, by the earth is called weight. The reaction to this force is the: My answer is B A. earth's surface pushing against the person's body B. person's body pulling on the earth C. person's body pushing ...
Friday, December 31, 2010 at 3:19pm

Physical Science
A 75 kg astronaut in space pushes against a 200 kg anvil. When the astronaut lets go of the anvil while pushing it: My answer is D (Just checking my work) A. both astronaut and anvil accelerate in opposite directions at the same rate B. neither the astronaut nor the anvil will...
Friday, December 31, 2010 at 3:10pm

physical science
which of newton's laws (1, 2, or 3)are used in the following: 1) spaceship reaches the speed for orbit around the earth, 2) pushing the shuttle forward in space 3) the force needed to escape earth's atmosphere
Friday, December 31, 2010 at 2:30pm

physics
explain examples of physical laws used during the Apollo 13 mission to get it home
Thursday, December 30, 2010 at 10:05pm

Chemistry
Which of the following is an example of a physical change ? A) Zinc metal is added to hydrochloric acid and a gas is released. B) Concentrated hydrochloric acid is diluted with water. C) Acid rain causes the decomposition of a marble statue. D) Hydrochloric acid is neutralized...
Thursday, December 30, 2010 at 5:35pm

Sci Plzz See This Post
Does my poem below have these things "explain why it is where it is on the periodic table, what element(s) it might combine with to make a compound/molecule, and finally, WHY it would interact with that other element" Here is the Poem Below: “What’s your ...
Thursday, December 30, 2010 at 1:37pm

Sci
Does my poem below have these things "explain why it is where it is on the periodic table, what element(s) it might combine with to make a compound/molecule, and finally, WHY it would interact with that other element" Here is the Poem Below: “What’s your ...
Thursday, December 30, 2010 at 11:23am

physical
violence in sports
Thursday, December 30, 2010 at 1:10am

Physical Ed
Are you allowed to head butt another player in the chest ? (IN SOCCER)
Thursday, December 23, 2010 at 5:53pm

statistics
14. Total plasma volume is important in determining the required plasma component in blood replacement theory for a person undergoing surgery. Plasma volume is influenced by the overall health and physical activity of an individual. Suppose that sample of 61 male firefighters ...
Sunday, December 19, 2010 at 12:41am

Psychology
Question: • If each gender has an advantage based on its brain pattern, how can social scientists say that these differences create a disadvantage for females? (Think about the highest paying and highest prestige career fields and what skills are necessary for achieving ...
Saturday, December 18, 2010 at 8:11pm

psychology
"during a heated argument with his father, 15 y/o Jason developed a pralysis of his right arm. Medical examinations can find no physical cause for the paraplysis. Use the psychoanalytical perspective to explain how the paralysis may be Jason's attempt to deal with an ...
Friday, December 17, 2010 at 1:02pm

Health
what negative physical problems is specifically associated with how heroin is taken?
Thursday, December 16, 2010 at 9:13pm

geology
Apart from the composition of the rock itself, what climate do you imagine is more conducive to physical weathering? and Chemical weathering? I know physical weathering is from wind and water transporting the eroded rocks and particles. Chemical weathering is water ...
Wednesday, December 15, 2010 at 2:02pm

bilogy
methane which is composed of carbon and hydrogen, lacks fuctional groups and is a gas at room temperature.upon replacing one of the hydrogen atoms with a hydroxyl group, methane is converted to a liquid called methanol at room temperature. please explain to me the reason ...
Tuesday, December 14, 2010 at 9:05pm

science
Chapter 1 & 2 Review Questions 1. Compare and Contrast the two main branches of physical science. 2. Distinguish between scientific laws and scientific theories. 3. Describe the steps of the scientific method. 4. Explain the objective of a consistent system of units, and ...
Monday, December 13, 2010 at 6:10pm

Physics and chemistry
Chapter 1 & 2 Review Questions 1. Compare and Contrast the two main branches of physical science. 2. Distinguish between scientific laws and scientific theories. 3. Describe the steps of the scientific method. 4. Explain the objective of a consistent system of units, and ...
Monday, December 13, 2010 at 5:39pm

English
Can you please check these sentences for me, please? Thank you very much. 1) The Victorians fostered the ideas of racial superiority. They believed that race were divided by both physical and intellectual differences. 2)As a consequence, some races were doomed to (destined to...
Monday, December 13, 2010 at 10:08am

biology
the unique properties of water make life possible on earth, select three properties of water and: a) for each propery, identify and define the property and explain it in terms of the physical/chemical nature of water b) for each property,describe one example of how the ...
Sunday, December 12, 2010 at 7:15pm

Human service
I have to explain why human service worker's uses the Rosenberg self esteem scale. This is what I have so far. Can you tell me where to find more information on why they use the scale and how my part sounds so far. Morris Rosenberg’s self-esteem scale is a useful tool...
Sunday, December 12, 2010 at 5:34pm

physical scince
answer the following question: QUESTION 4: What does it mean if a compound has a solubility of 15g in 100g of water at 0 degrees Celcius? A) 100 g of the compound will dissolve in 15 g of water at 0 degrees celcius B)15 g of the compound will dissolve in 100g of water at 0 ...
Sunday, December 12, 2010 at 5:17pm

hello i need someone to check these for me? 6) alcohol,drugs,radiation,and pollutants that affect a child development are called a.teratogens b.toxic inhibitors c.tranferal agents. d.phenylanines 10) monstrates an inability to leap over a barrier, his teacher checks to see if ...
Sunday, December 12, 2010 at 11:47am

child care
hello i need someone to check these for me? 6) alcohol,drugs,radiation,and pollutants that affect a child development are called a.teratogens b.toxic inhibitors c.tranferal agents. d.phenylanines 10) monstrates an inability to leap over a barrier, his teacher checks to see if ...
Sunday, December 12, 2010 at 9:24am

English
Can you please check these sentences? Thank you. 1)What factors can have an influence (play a role?) on the way we dress? 2)Are you fashion conscious? Have you ever been to a fashion show? 3)Do you belong to any fashion conscious (?) teenage group? What sort of clothes do you ...
Sunday, December 12, 2010 at 8:07am

hello i need someone to check these for me? 6) alcohol,drugs,radiation,and pollutants that affect a child development are called a.teratogens b.toxic inhibitors c.tranferal agents. d.phenylanines 10) monstrates an inability to leap over a barrier, his teacher checks to see if ...
Saturday, December 11, 2010 at 2:49pm

Physical Science
a net force if 7 N acts on a 7 kg mass over a distance of 5m. How much work did this force accomplish?
Saturday, December 11, 2010 at 12:53pm

1) A strategy for health promotion among infants toddlers and young children focuses on educational programs physical fitness activities and a. family planning b.tobacco,alcohol, and drug use. c.Nutrition. d.mental health & menta disorders. 2)The main goal of effective health...
Saturday, December 11, 2010 at 12:06pm

physical
Suppose an unknown substance has a melting temperature of 1,200 degrees Celsius and a density of 16.7 g/cm3. However, the different individual atoms that make up the element have very different melting temperatures and densities. Which is the unknown substance most likely?
Friday, December 10, 2010 at 5:03pm

English
I forgot to include the following sentences. Thank you very much. 1) You can do the exercises either on a foolscap or on the photocopy. 2)I like wearing baggy, comfortable clothes. I usually wear diamond-patterned trousers under a plain zip-up sweatshirt. 3) My parents buy me ...
Thursday, December 9, 2010 at 2:56pm

college
Communication channels - physical presence, written-printed, electronic/computer what are the advantages and disadvantages of each?
Wednesday, December 8, 2010 at 6:32pm

physical science
how would you classify a solution tht contains 1.5g of lithium carbonate in 100g of water at 20 degrees
Wednesday, December 8, 2010 at 2:34pm

English
I forgot to include the following sentences. Thank you. 1)I need to rephrase this: “These schools incorporated the new-found ideals of manliness; of physical, sporting endeavour, of valuing team above self, of learning to play the game and without worrying who wins or ...
Wednesday, December 8, 2010 at 11:36am

Marketing
What is the relationship between channels of distribution and logistics? How does geographical location affect your selection of distribution channels? Give an example of a company that needs both a physical location and an online presence. How do they meet the challenges of ...
Tuesday, December 7, 2010 at 12:44pm

physical
in volley ball is it an illegal hit if you hit it underhand while ball is in play
Monday, December 6, 2010 at 7:25pm

Science
I have a paper due where I have to develop a healthy eating plan. I have the paper almost completed but I need a little help in one area. how your plan may be adjusted to fit your changing nutritional needs as a result of age or changes in physical capabilities. I am using ...
Sunday, December 5, 2010 at 5:42pm

Chemistry
what is a common physical property of ester?
Saturday, December 4, 2010 at 6:24pm

physical scenic
calculate the potential energy of 30kg box raised 2 meters above ground?
Thursday, December 2, 2010 at 8:04pm

Microeconomincs
Why does the Average Physical Product curve slope downwards?
Thursday, December 2, 2010 at 6:38pm

physical science with earth science
Write a balanced chemical equation for the reaction for propane C3H8 burning in oxygen to for carbon dioxide and water vapor
Thursday, December 2, 2010 at 6:31pm

economics
Why does the Average Physical Product curve slope downwards so soon?
Thursday, December 2, 2010 at 2:15pm

Economics
Why does the Average Physical Product curve slope downwards so soon?
Thursday, December 2, 2010 at 9:36am

physical science
what is non convective rain?
Wednesday, December 1, 2010 at 10:03pm

child care
1.When properly executed, the behavior management strategy known as time-out becomes(a) A. a positive reinforcer. B. more effective than logical consequences. C. a conversation between child and adult. D. suitable punishment for misbehavior. 2. Which of the following ...
Wednesday, December 1, 2010 at 2:11pm

Pharmaceutical Dosage Forms
If there is 1 g KH2PO4 and 1 g K2HPO4 in 100mL of solution, what is the mEq/mL of potassium? The Answer is 0.19mEq/mL. But I need to show work on how to get the answer. Textbook Applied physical pharmacy By Mansoor M. Amiji, Beverly J. Sandmann Chapter 3
Tuesday, November 30, 2010 at 5:20pm

physical science
what does Q=m times t times c. mean and wat are the meaning of each letter
Tuesday, November 30, 2010 at 4:42pm

PHILOSOPHY
Is a person more than a physical body? What is the mind? What is thought?
Tuesday, November 30, 2010 at 6:54am

chemistry
Enthalpy and Entropy in Reactions and Solutions Introduction In the course of most physical processes and chemical reactions there is a change in energy. In chemistry what is normally measured is H (enthalpy change), the change in heat at constant pressure and ignoring any ...
Tuesday, November 30, 2010 at 1:13am

Chemistry
which is an example of physical change 1.water decomposing into hydrogen and oxygen 2.potassium and bromine combining to form potassium bromide 3.solid ice melting into liquid water 4.none of the above i think its 3.
Sunday, November 28, 2010 at 10:20pm

Confidentiality in Allied Health
Use Opinion 5.07 and information from other research you conduct to find answers to the following questions. Explain each of your answers. 1. Should corrections be date and time stamped? 2. When should a patient be advised of the existence of computerized databases containing ...
Sunday, November 28, 2010 at 10:09pm

physics
Suppose that you want to freeze 1.2 kg of water for a party, and only have 10 minutes to do it. Relying on nothing but your keen physical abilities, a dixie cup, duct tape and a piece of string, you manage to build a refrigerator unit which can do the job. The temperature ...
Sunday, November 28, 2010 at 8:42pm

Physics
Refrigerator Suppose that you want to freeze 1.2 kg of water for a party, and only have 10 minutes to do it. Relying on nothing but your keen physical abilities, a dixie cup, duct tape and a piece of string, you manage to build a refrigerator unit which can do the job. The ...
Sunday, November 28, 2010 at 8:05pm

English
I need to find some fallacies in the Martin Luther King Jr. speech.. "I Have A Dream" I am happy to join with you today in what will go down in history as the greatest demonstration for freedom in the history of our nation. Five score years ago, a great American, in ...
Saturday, November 27, 2010 at 8:18pm

Science =____= ASAP!!!
Is Adding Vinegar to Yeast A Physical or a Chemical Change????
Wednesday, November 24, 2010 at 8:19pm

PHILOSOPHY
What are your views on Free will and determinism? 1. The behavior of atoms is governed entirely by physical law. 2. Humans have free will. Do you accept both (1) and (2)
Wednesday, November 24, 2010 at 9:17am

physical science
An object has a length of 5.0 cm, a height of 3.0 cm and a width of 15.0 cm. It has a mass of 24 grams. What is its density?
Tuesday, November 23, 2010 at 8:40am

physical science
a 2.0 kg rock sits on the edge of a cliff 12m above the beach. The rock falls off the cliff. How much kinetic energy will it have just before it hits the beach?
Monday, November 22, 2010 at 8:22pm

physical science
how much power is required to lift the crate
Sunday, November 21, 2010 at 9:43pm

physical science
how much work is done on a 100kg crate that is hoisted 4 m in a time of 4 seconds
Sunday, November 21, 2010 at 9:40pm

Statistics
Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that people should spontaneously follow a 24-hour cycle of sleeping and waking¡ªeven if they are not exposed to the usual pattern of sunlight. ...
Saturday, November 20, 2010 at 7:19pm

Statistics
Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that people should spontaneously follow a 24-hour cycle of sleeping and waking¡ªeven if they are not exposed to the usual pattern of sunlight. ...
Saturday, November 20, 2010 at 7:00pm

physical science
change 85 kilograms to grams change 45 meters to centimeters change 70 nanometers to meters
Saturday, November 20, 2010 at 9:28am

Physical science
Acceleration is F/S A=F/M this is: direct inverse not sure both direct &inverse
Saturday, November 20, 2010 at 9:22am

Physical science
determine the velocity of a toy jeep if it has a distance of 80 meters and a time of 8 seconds?
Saturday, November 20, 2010 at 9:19am

Physical Science
force of a toy jeep if the mass=50kg & is traveling at 4m/s& the radius is 50 centimeters.
Saturday, November 20, 2010 at 9:14am

physical
C.How much work does the ride do to lift theriders up to a height of 50 meters?
Friday, November 19, 2010 at 11:03am

GEOGRAPHY (URGENT!!!)
I NEED HELP!!! this is urgent!!! Human-Environmental Interactions: how did the people in Khartoum modify the environment? how is the people in khartoum being influence by the physical landscape/environment? sorry my grammar sucks i have other questions but i really extremely ...
Thursday, November 18, 2010 at 7:50pm

English
I really hope you can check these sentences for me. I tried to rephrase the beginning of chapter five of Shelley's Frankenstein. 1) The scene takes place during a dreary night. It is one in the morning and the rain taps dismally (I need a synonym) against the window panes...
Thursday, November 18, 2010 at 8:05am

physical science
decribe an experiment you could perform to determine the average speed of a toy car rolling down an incline
Wednesday, November 17, 2010 at 11:49pm

physics
A pendulum is constructed from a thin, rigid, and uniform rod with a small sphere attached to the end opposite the pivot. This arrangement is a good approximation to a simple pendulum (period = 5.97 s), because the mass of the sphere (lead) is much greater than the mass of the...
Wednesday, November 17, 2010 at 10:27pm

physics
A fireman tosses his 0.863-kg hat onto a peg, where it oscillates as a physical pendulum. If the center of mass of the hat is 8.32 cm from the pivot point, and its period of oscillation is 0.762 s, what is the moment of inertia of the hat about the pivot point?
Wednesday, November 17, 2010 at 8:54pm

English
I really need you to check these sentences for me. I tried to rephrase the beginning of chapter five of Shelley's Frankenstein. 1) The scene takes place during a dreary night. It is one in the morning and the rain taps dismally (I need a synonym) against the window panes. ...
Wednesday, November 17, 2010 at 6:45pm

Chemistry
What is the balanced molecular equation and their physical state of each substance of silver(I) nitrate and 6 M hydrochloric acid?
Wednesday, November 17, 2010 at 5:47am

chemistry
What is the balanced molecular equation and their physical state of each substance of barium chloride and 3 M sulfuric acid?
Wednesday, November 17, 2010 at 5:46am

chemistry
what is the balanced molecular equation and their physical state of each substance for: copper(II) sulfate and 10% sodium hydroxide?
Wednesday, November 17, 2010 at 5:45am

social studies
i need to find some info on kyoto how have people adapted to this environment? has the physical landscape/environment influenced human life in this place? how have humans modified this environment from its natural state can you send me the links where you found the answers plz...
Tuesday, November 16, 2010 at 7:55pm

physical
give brief explanation of the origin of both football and soccer
Tuesday, November 16, 2010 at 9:46am

physical science
In the cabin of a jetliner that travels at 600 km/h, a pillow drops from an overhead rack into your lap below. Since the jetliner is moving so fast, why doesn't the pillow slam into the rear compartment of the plane? What is the horizontal speed of the pillow relative to ...
Monday, November 15, 2010 at 10:32pm

physical science
a 250-kg rock falls off a cliff and comes to rest on the ground, which is 40 m below the cliff . At what point is the rock's potential energy at maximum?
Monday, November 15, 2010 at 4:27pm

physical
calculate the total energy of a 2-kg object moving at 10m/sec 50meters above the surface.
Monday, November 15, 2010 at 10:45am

Chemistry
Is crystallization a chemical or physical change?
Sunday, November 14, 2010 at 8:28pm

Europe
HOw does the physical geography of Europe affect its political, social, and economic charateristics?
Sunday, November 14, 2010 at 1:56pm

Physical Science
Object A has a mass of 500g and a density of 5.0g/cm^3; object B had a mass of 650g and a density of 5.6g/cm^3. a. Which object will displace the most liquid? b. Could object A and object B be made of the same substance?
Saturday, November 13, 2010 at 6:57pm

physical chemistry
For the process CH4(g) = C(s) + 2H2(g) A reaction is started in a rigid vessel at 1000 K with 1 mole of methane and 1 mole of hydrogen gas at 10 bar. Use table C.3 from your text to determine how many grams of carbon should be formed after the reaction has reached equilibrium.
Friday, November 12, 2010 at 3:20pm

Child Care
1. The interaction between a child's biological makeup and the environmental influences that affect his or her development and behavior is called the A. balanced systems approach B. Ecological systems theory C. body in the classroom analysis D. me/them dynamic 2. When a ...
Thursday, November 11, 2010 at 4:13pm

science
Can a solution be made by mixing a solid,liquid,and gas?
Wednesday, November 10, 2010 at 11:32pm

physical science
net force 50n+ 30n =
Wednesday, November 10, 2010 at 9:56pm

Social Studies
Hi Jiskha!! I have been researching the Civil war and wanted to know it you can add to this. No this is not my work it is essays and summary's i found on the computer, this is what I found: Summary of the Civil War: Fought 1861-1865, the American Civil War was the result ...
Wednesday, November 10, 2010 at 8:11pm

Physical Chemistry
The equilibrium constant for a reaction was measured at several temperatures and the data plotted at right. The slope and y-intercept of the plot are +3.25 kK and -4.04, respectively. Calculate ΔrH(std), ΔrS(std), and ΔrG(std) using this information.
Wednesday, November 10, 2010 at 7:43pm

Physical Chemistry
A 100 amino acid folded protein (F) is in equilibrium with it’s unfolded (U) (or denatured) form. Let ΔrH(std) =+347 kJ mol-1 and ΔrS(std) =-1010 J K-1 mol-1 for the equilibrium (F U) at 25℃. (a) Calculate the concentration of protein in each form if the ...
Wednesday, November 10, 2010 at 7:42pm

Physical Chemistry
Calculate the standard reaction Gibbs energy of the oxidation of ammonia to nitric oxide according to the equation 4 NH3g) + 5O2(g) → 4 No(g) + 6 H2O(g).
Wednesday, November 10, 2010 at 7:40pm

physical chemistry
Calculate the equilibrium constant (K) for the ammonia synthesis reaction at 25°C and show how K is related to the partial pressures of the species at equilibrium. Consider that the overall pressure is low enough for the gases to be treated as perfect. N2(g) + 3H2(g) ->...
Wednesday, November 10, 2010 at 7:39pm

12 Math
Graph the results of a coin toss: Toss Coins 0 20 1 12 2 5 3 1 4 0 State an equation that best fits the results (use n to represent the number of the toss). What physical phenomenon does this model? I was able to graph this, I just do not understand how to write the equation, ...
Wednesday, November 10, 2010 at 5:37pm

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