Homework Help: Health: Physical Fitness

Recent Homework Questions About Physical Fitness

chem- check my answer
magnesium hydroxide + hydrobromic acid --> is the formula for that Mg(OH)2(s) + HBr(aq) ->H2O(l) +BrOH(s) and are the physical states correct??
Saturday, April 9, 2011 at 3:32pm

Physical Science
lead has specific heat of .028kcal/kgC, melting point of 328 degrees C and a heat fusion of 5.5 kcal/kg. how much heat must be provided to melt a 250kg sample of lead with a temperature of 20 degrees Celsius?
Friday, April 8, 2011 at 12:16am

psychology
particular factors encourage people to be drawn into liking one another. in this context the reciprocity of liking effect is primarily associted with? a.) exposure b.)propinquilty c.) similarity d.) physical attractiveness. I think its D but not 100%
Thursday, April 7, 2011 at 9:30am

English
Please check for comma errors. If I need to add any commas or take some out please show me where. Thank you!! You seem to be progressing nicely after your back surgery; however, I do want to remind you of the importance of the instructions that was give to you prior to your ...
Wednesday, April 6, 2011 at 10:05pm

Physical Geography, Earth Science
Who were the four other major contributors to the development of modern astronomy after Copernicus? Explain what those contributions were. Finally, why did it take so long for the geocentric view of the universe to be overthrown and what does that tell us about scientific ...
Wednesday, April 6, 2011 at 9:15pm

physical
Part A Each blade on a wind turbine is engineered to produce an effective force through its center of mass that is perpendicular to its long axis. (Part A figure) The magnitude of the force produced by each blade in a wind of speed v is F=(40.0~{\rm kg/s})v. If the center of ...
Wednesday, April 6, 2011 at 8:30am

Chemistry
What physical properties can you use to verify the identity of a compound?
Tuesday, April 5, 2011 at 4:21pm

Physical Geography, Earth Science
How do you label a Tectonic Map of Hypothetical Ocean Basin? I have to draw in the plate boundaries.
Tuesday, April 5, 2011 at 2:46pm

Physical Science
When aqueous solutions of Na2CO3 and BaCl2 are mixed, the products are NaCl and?
Sunday, April 3, 2011 at 10:20pm

physical science
Compare the amount of heat required to change teh temperature of 150 kg of copper from 12 degrees celcius to 56 degrees celcius to the amount of heat required to change the temperature of 150 kg of gold from 12 degrees celcius to 56 degees celcius.
Saturday, April 2, 2011 at 1:37pm

Physical Geography
Will someone please check my work? I cannot seem to post the map that is in the workbook. Assume that a parcel of air is forcd to rise up and over a 4000 meter high mountain.The initial temp of the parcel at sea level is 30*c, and the LCL of the parcel is 2000 meters. The DAR...
Friday, April 1, 2011 at 4:23pm

physical science
How much work is required to lift a 10kg weight 5m off the floor if the time is 10 sec?
Friday, April 1, 2011 at 9:33am

Physical Geography
Using information from 2 locations, Berkeley, California and Terre Haute, Indiana, a comparison of the water balance will be completed between the 2 sites. The data includes precipitation, potential and actual evapotranspiration, soil water storage, deficit and surplus.
Thursday, March 31, 2011 at 7:41pm

physical
our p.e. teacher makes us do alot of laps and the other day i fell on my spine is it good for me
Thursday, March 31, 2011 at 12:28am

science
i need to solve this : 1. we should show the chemical structure of oligosaccharide which contains 2 galactoses and 1 saccharose. 2. compare the difference in physical features og dicarboxylic acids and glucose beta chain 3. determine the calorific value of 5g saccharose please...
Tuesday, March 29, 2011 at 4:19pm

accounting
Neer Department Store uses the retail inventory method to estimate its monthly ending inventories. The following information is available for two of its departments at August 31, 2011. Sporting Goods Jewelry and Cosmetics Cost Retail Cost Retail Net sales $1,000,000 $1,160,000...
Tuesday, March 29, 2011 at 8:39am

english
Every now and then, instead of using e-mail, mail a letter to your grandparents. We live in a fast-paced world. We feel comfortable using computers to send e-mails and Instant Message. Nana doesn’t live in that time zone. Forget all those fancy fonts and emoticons or ...
Sunday, March 27, 2011 at 4:42pm

Physical Science
An aluminum nucleus has 13 protons and 14 neutrons. A copper nucleus has 29 protons and 34 neutrons. What is the force of repulsion between an aluminum nucleus and a copper nucleus when they are separated by 1.2 nm?
Saturday, March 26, 2011 at 12:39pm

physical science
in a balanced chemical equation the mass of the reactants is equal to the? a. atoms in a molecule b. atomic mass of the elements c. volume of the reactants d. mass of the products
Friday, March 25, 2011 at 7:57pm

English
I am the WORST writer. English is my weakness. I just wrote this literary analysis. I would go to the writing center at my school, but the paper is due tomorrow and it doesn't open until after my class. I would appreciate it SO much is someone could just quickly scan this ...
Thursday, March 24, 2011 at 12:00am

Physical Science
In a certain reaction 1.5 mol of CO and 1.5 mol of H2O are placed in a 2,0 dm3 sealed vessel. Equilibrium is established at a temperature of 1 000 C. The equilibrium reaction equation is CO(g) + H2O(g) = CO2(g) + H2(g) The value of Kc for this reaction is 0,63. Calculate the ...
Tuesday, March 22, 2011 at 6:00am

physical science
If the asteroid is moving at a constant speed in its orbit, does this also mean it is moving at a constant velocity? Explain your answer.
Monday, March 21, 2011 at 4:46pm

physical science
Assume this asteroid has the shape of a sphere. A rock sitting on the surface of the asteroid has a weight of 100 newtons. What would the weight of this rock be if it were moved to a distance above the surface equal to the radius of the asteroid? It may be helpful to draw a ...
Monday, March 21, 2011 at 4:44pm

physical science
What happens to the gravitational force between two objects if their separation is doubled? The force of attraction is doubled. the same. half as much. one fourth as much.
Sunday, March 20, 2011 at 8:23pm

physical scien ce
what is the wave length
Sunday, March 20, 2011 at 7:56pm

physical science
what is the wave length
Sunday, March 20, 2011 at 6:14pm

English
Thank you very much for helping me! Your information was really of help can you say that?) Here is a paragraph I wrote on Dulce et Decorum Est by Owen. I know it is incomplete. I also need to find more data on the "War poets" and on this poem, too. Can you help m? 1...
Sunday, March 20, 2011 at 6:05pm

Chemistry
In a mixture of liquids,liquid A is steam volatile,and decomposes at its boiling point.explain the method of separating liquid A from the mixture,with physical principles involved.
Sunday, March 20, 2011 at 12:09am

English
just can't figure these sentences out. have to rewrite these sentences, correcting the problem of incorrect omission.? 1. A liberal arts background is excellent for such professions as lawyers and doctors. 2. American colleges consistently produce more physical education ...
Saturday, March 19, 2011 at 8:57am

English
I just can't figure these sentences out. have to rewrite these sentences, correcting the problem of incorrect omission.? 1. A liberal arts background is excellent for such professions as lawyers and doctors. 2. American colleges consistently produce more physical education...
Friday, March 18, 2011 at 2:55pm

physical sciece
aA player uses a hockeey stick to incease the speed of a 0.200 kg hockey puck by 6 m /s in 2 seconds. (A)How much dd the hockey puck accelerate? (B)How much force was exerted on the pack? (C)How much force did the puck exert on the hockey stick.
Thursday, March 17, 2011 at 6:13pm

physical science
As the number of carbon atoms in the compound increases, what pattern do you see in the boiling points? What general pattern do you see in the melting points?
Thursday, March 17, 2011 at 5:53pm

English
Can you please help me formulate the questions better and answer the last two yourself? Thank you very much. 1) I quarrelled (argued) with my best friend because I refused to let her copy the maths test (from mine?). 2) She is cross/furious with me now. I'm going to make ...
Thursday, March 17, 2011 at 3:20pm

physical
the density of mercury is 13.3 g cm-3. what is its D in kg m-3 and standard form?
Thursday, March 17, 2011 at 4:34am

physical science
What is the acceleration of a girl on a skateboard if the The unbalanced forward force on the boy is 15 N? The total mass of the boy and skateboard is 58 kg.
Wednesday, March 16, 2011 at 3:56pm

chemistry
Would you use a physical model or a conceptual model to describe the following: a gold coin, dollar bill, car engine, air pollution, virus, spread of sexually transmitted disease?
Wednesday, March 16, 2011 at 1:05pm

Physical Science
If a vehicle circled Earth at a distance equal to the Earth-Moon distance, how long would it take to make a complete orbit?
Tuesday, March 15, 2011 at 9:38am

marketing
consumer services then to be intangible.and goods tend to be tangible, use an example to explain how the lack of a physical good in a pure service might affect efforts to promote the service.
Monday, March 14, 2011 at 9:36pm

Physical science
(A) A red light source and a green light source shine on a white screen. What color will the screen be? Explain your answer (B) if a blue object is aced in front of the screen, what color will it be? Explain your answer
Monday, March 14, 2011 at 5:25pm

Physical science
Two hunting forks are struck at the same time. One tuning fork has a frequency of 20 Hz while the second fork has a frequency of 226 Hz. How many beats will result?
Monday, March 14, 2011 at 5:12pm

science
how do scientists determine wether or not something is physical or chemical?
Monday, March 14, 2011 at 2:21pm

Physical science
A player uses a hockey stick to increase the speed of a 0.200 kg hockey puck by 6 m/s in 2 seconds. How much did the hockey puck accelerate? How much force was exerted on the puck? How much force did the puck exert on the hockey stick?
Monday, March 14, 2011 at 1:17am

HUMAN RELATIONS
When people don't clearly recognize the obstacle causing their frustration, they A. will probably strike out at any convenient target. B. usually won't become aggressive. C. are said to be experiencing a minor frustration. D. won't resort to physical violence.
Sunday, March 13, 2011 at 10:47pm

English
I forgot to include the other sonnet (N. 116). I find it hard to rephrase the last couplet. 1)Sonnets 116 is about love in its most ideal form. True love is to be based on mutual trust and understanding. 2) True love doesn’t change when the situation changes or with the ...
Sunday, March 13, 2011 at 1:33pm

Science - Physical
Earth's magnetic field induces some degree of magnetism in most of the iron objects around you. With a compass you can see that cans of food on you pantry shelf have north and south poles. When you pass the compass from their bottoms to their tops, you can easily identify ...
Sunday, March 13, 2011 at 12:27pm

physical
three displacement vectors of a croquet ball are shown in figure p3.49, where |a| = 20.0 units, |b| = 40.0 units, and |c| = 30.0 units. find (a) the resultant in unit–vector notation and (b) the magnitude and direction of the resultant displacement
Saturday, March 12, 2011 at 3:16am

physical
A car is driven east for a distance of 43 km, then north for 25 km, and then in a direction 26° east of north for 26 km. Determine (a) the magnitude (in km) of the car's total displacement from its starting point and (b) the angle (from east) of the car's total ...
Friday, March 11, 2011 at 12:41am

medical terminology
1. Dr. Hannah places a stethoscope to a seven-year-old child’s chest. The lungs reveal basilar rales. Which method is Dr. Hannah using to perform the physical examination? A. Auscultation C. Percussion B. Palpation D. Visualization 2. Cardiology is the study of the heart...
Friday, March 11, 2011 at 12:38am

physical science
the average speed of sound in water is 1500 m/s. how long would it take a sound to travel 9000m/s
Thursday, March 10, 2011 at 9:29pm

science
what is the difference between a physical change and a chemical reaction
Thursday, March 10, 2011 at 5:16pm

Child Care
1.At what age does exercise begin to result in strength in boys and girls? a)between ages 1 and 2 b)between ages 3 and 4 c)between ages 5 and 6 d)between ages 6 and 7 2.Temperatures in child care education setting should be set at __ in the summer and __ in the winter. a)55 to...
Wednesday, March 9, 2011 at 1:49pm

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. Alcohol, ...
Wednesday, March 9, 2011 at 12:42pm

Physical science
what is the concentration hcl react with zn
Wednesday, March 9, 2011 at 6:59am

Physical Science
How far will 490 J raise an 8 kg mass?
Monday, March 7, 2011 at 6:24pm

Physical Science
How far will 490 Joules raise a block weighing 7 N?
Monday, March 7, 2011 at 6:23pm

psychology
optimum physical health usually occurs a) between the ages of 15 and 21 b) between the ages 18 and 25 c) between the ages of 25 and 40 d)between the ages of 40 and 55 i want to say it it is a
Monday, March 7, 2011 at 2:48pm

statistics
Part 1) A physical therapists wishes to determine whether an exercise program increases flexibility. He measures the flexibility (in inches) of 12 randomly selected subjects both before and after an intensive eight-week training program and obtains the following data: Before: ...
Monday, March 7, 2011 at 8:01am

English
Can you please help me check these sentences, please? Thank you. 1) Slaves were considered as animals: white slaves used to sell them by auction. 2) Furthermore, white slave owners imposed a system of punishment and reward (better: of punishments and rewards to keep the slaves...
Monday, March 7, 2011 at 4:52am

accounting
Capwell Corporation uses a periodic inventory system. The company's ending inventory on December 31, 2011, its fiscal-year end, based on a physical count, was determined to be $326,000. Capwell's unadjusted trial balance also showed the following account balances: ...
Sunday, March 6, 2011 at 6:58pm

physical
A battery of e.m.f 24v and internal resistance of 4ohms is connected to a resistor of 3ohms.what is the terminal potential difference of the battery
Sunday, March 6, 2011 at 1:33pm

Amer Lit
So I posted something like this about my introductory paragraph. I have my conclusion and was wondering if you could tell me if I have a good conclusion with restating my thesis and closing it all up. I will show you my introduct and conclusion so you can compare. Introduction...
Saturday, March 5, 2011 at 6:14pm

Physical science
What is the mass in kg of a cone made of brass that has a base radius of 25 cm and a height of 50 cm.
Friday, March 4, 2011 at 11:27pm

physics
When the thigh is fractured, the patient's leg must be kept under traction. One method of doing so is a variation on the Russell traction apparatus. (See the figure.) Please place period in place of (dot) oi53(dot)tinypic(dot)com/2a0b7yx(dot)jpg If the physical ...
Friday, March 4, 2011 at 9:34pm

adult development psyc 307
identify and decribe the physical,conitive, and socioemotional changes that we experience during the early adult stage of development?
Wednesday, March 2, 2011 at 6:29pm

physics/physical science
I have multiple questions like the following and need help on how to work out the answer of one because our book does not cover impulse. a car is at rest when it experiences a fwd propulsion force to set it in motion. it then experiences a second fwd propulsion force to speed ...
Wednesday, March 2, 2011 at 2:39pm

Physics
I was walking through my local home supply store the other day carrying a 10 ft length of plastic pipe. The pipe was horizontal and my hand was supporting the middle of the pipe. I noticed that when I took two steps each second the ends of the pipe would move up and down a ...
Wednesday, March 2, 2011 at 10:58am

Physical Education
Length: about 1 A4 page. Someone please proofread and tell me how I can re-structure certain sentences. Like some of them are lengthy because I want to make a point or arguement. Part a) Outline the purpose of the campaign you are assessing. b) Assess two pro's and one con...
Wednesday, March 2, 2011 at 4:34am

chem
I need help classifying these as physical or chemical changes! 1. sodium metal exposed to air turns dark gray. 2. steam in a test tube condenses to moisture. 3. baking soda in vinegar releases bubbles. 4. water dissolves in vinegar to give a solution. 5. tap water and soap ...
Tuesday, March 1, 2011 at 9:44pm

Chemistry
I need help classifying these as physical and chemical properties! 1. sodium metal in chlorine gas releases luster. 2. sodium metal has a metallic silver luster. 3. sodium metal in water porduces hydrogen gas. 4. sodium metal melts to a liquid at 98 degrees. 5. sodium metal ...
Tuesday, March 1, 2011 at 9:42pm

statistics
A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 440 seconds and a standard deviation of 60 seconds. Find the probability...
Tuesday, March 1, 2011 at 3:19pm

physical science
At the bottom of a well one quarter of radius of the earth deep your weight compare to your normal weight would be
Tuesday, March 1, 2011 at 3:19pm

physical science
a 180 lb person climbs a ladder to a point which is two times the radius of the earth high. how much does he weigh there?
Tuesday, March 1, 2011 at 3:17pm

medical
I. AMBULATORY CARE FACE SHEET Admit Date: 7/8/20XX @ 20:22 Discharge Date/Time: 7/9/20XX @ 10:10 Sex: M Age: 47 Disposition: Home Admitting Diagnosis: Possible esophageal foreign body. Discharge Diagnosis: Esophageal foreign body. Procedures: EGD with foreign body removal. ...
Monday, February 28, 2011 at 3:21pm

Chemistry - physical, chemical and nuclear process
A healthy human body maintains a temperature of about 37.00C. Explain how physical, chemical and nuclear processes all contribute, directly or indirectly, to keeping the human body at a constant temperature.
Sunday, February 27, 2011 at 8:53pm

physical science
how gravitational acceleration is used to benefit mankind and the environment.how can rural people also benefit from the use of gravitational acceleration?
Sunday, February 27, 2011 at 2:15pm

Physical Science
A stationary but moveable 450-kg cannon is fired and the 12-kg cannonball moves off to the right with a velocity of 20.0 m/s. What is the connon's velocity (both magnitude and direction) due to the kickback from the firing?
Saturday, February 26, 2011 at 8:11pm

physical science
Two 5.0kg rocks are 0.20m apart. What is the magnitude of the gravitational attraction between the rocks?
Saturday, February 26, 2011 at 7:58pm

Physical Science
If a 2.0kg object is initially moving with a speed of 10 m/s and a 6.0 N force were applied in the direction of the motion, what would be the acceleration?
Saturday, February 26, 2011 at 5:52pm

english
can i know how to paraphrase : 1) fresh and dried cherries are one of the only natural food sources of melatonin, the chemical that controls the body`s internal clock to regulate sleep. researches who tested tart cherries and found high levels of melatonin recommend eating ...
Saturday, February 26, 2011 at 10:10am

Science
Classify each of the eight living things listed below into one of the two groups according to an important physical characteristic. Gorilla,Parrot,Snake, Earthworm,Jellyfish,sponge,fish,fly Group 1- Group 2- what characteristic did you use in you classification? name a ...
Saturday, February 26, 2011 at 12:21am

Physical Science
In a pulley sytem with 100% effieciency with ten support cables. The input side reels 100 meters of cable. How far dis the output move? What is the value of the output force? In identical conditions at 70% efficiency, the cable does not stretch. How much input force is needed ...
Friday, February 25, 2011 at 1:13pm

Physical Science
Two cars are moving in identical conditions, one car is moving 3 times how much farther will this fast car travel?
Friday, February 25, 2011 at 1:00pm

Physical Science
A water balloon dropped from a dorm window does not break on impact. From what height would you need to drop the balloon to double the speed of the balloon?
Friday, February 25, 2011 at 12:57pm

Physical Chemistry
Assuming that the osmotic pressure of a sample of sea water at 10 C is 25.5 atm, calculate the work required under reversible conditions at this constant temperature to prepare 9 litre of pure water from this sea water. (Take the available volume of sea water as infinite and ...
Thursday, February 24, 2011 at 5:55pm

Physical Science
a car has an acceleration of 4 m/s squared. What will the increase in it's velocity be after 2 seconds? If it started with a velocity of 30 m/s, what is its final velocity?
Thursday, February 24, 2011 at 5:29pm

child day care management,health,safety,and nutrit
Q; introducing organized sporttts among young children is not recommended because A.this excludes the teacher or caregiver from a role in play B.they lack the necessary physical maturation needded C.they should be making their own rules D.they lack the social interaction ...
Thursday, February 24, 2011 at 5:15pm

Physical Science-Sould you please check my explana
If I put my finger in a glass of water or a glass of oil, which would make my finger look bigger and why? I think it would be oil because of the why the light is refracted-a thicker medium would bend the light more than the water
Wednesday, February 23, 2011 at 8:10pm

English
Here are some more sentences I'm still doubtful about. Thank you very much! 1)Industry dealers, who had settle school lessons dedicated to workers' sons, didn't follow the law. 2) (Correction: Factory owners, who were forced by law to teach their apprentices, often...
Wednesday, February 23, 2011 at 2:50pm

Physical Science
Suppose you made your own hydrometer. The lower part of a hydrometer has a volume of 7.0 g/cm3 and the upper part is 5.0 cm long and has a cross-sectional area of 0.62 cm2. What length of the upper part of the hydrometer will be submerged?
Tuesday, February 22, 2011 at 10:25am

physical science
If 22 grams of water are saturated at 75 degrees celsius with potassium nitrate and then cooled to 40 degrees celsius, how much will precipitate?
Monday, February 21, 2011 at 11:33pm

SmartPhone Help
Blackberry torch 9800: Present three alternative choices from three different carriers and three different manufacturers. All must have the requirements listed below. Phone Name/Carrier Blackberry Torch 9800(I have no idea what is meant by Carrier) These are the requirements ...
Monday, February 21, 2011 at 7:58pm

Smartphone Help
This is an assignment in which I have to list down Requirements, advantages, and disadvantages of a smartphone. These are the requirements needed. -send and receive phone calls -send and receive texts -on screen keyboard or physical keyboard -can tether a computer to it -runs ...
Monday, February 21, 2011 at 6:31pm

Networking
I need to design a fully switched network for a 3-story retail building. Management on second floor (36 workstations), Sales on the 1st floor (20 workstations) and warehouse in the basement (35 workstations). My SOW and Network diagrams must consist of the physical layout, ...
Monday, February 21, 2011 at 6:20pm

English
Can you please check if these sentences are possible? Thank you. 1) Refer then to the episodes which lead to the abolition of slavery. 2)Lord Henry is a symbol of hedonistic and decadent upper classes, despising the Victorian virtues of work and morals, generally associated ...
Monday, February 21, 2011 at 6:17pm

physical
I hv been try to do but...calcu the GPE of a roller coaster car points B is 5m/C 3,2m nd C 9,8 also D...
Monday, February 21, 2011 at 3:44pm

physical science
A student is traveling in a car with a constant velocity has a kinetic energy 1.0 x 10^4 J. What is the speedometer reading of the car in km/h.
Sunday, February 20, 2011 at 7:56pm

groundwater science
Assume that a losing stream exists in physical connection with groundwater in an isotropic unconfined aquifer. Assume that several contour lines of equal head cross the stream and intercept it. These contour lines of equal head are "V-shaped", with the point of the &...
Saturday, February 19, 2011 at 6:29pm

world history
I need a list of Physical features Marco Polo would have seen on his journeys.
Friday, February 18, 2011 at 5:36pm

english
I was given an assignment to write a one paragraph essay. I need you to pls help me with my essay on "the sniper" by liam o'flaherty. you can tell me where i went wrong and anyother thing. This is my essay so far: War knows no boundaries(age, sex, location etc...
Friday, February 18, 2011 at 12:36pm

Mathematics, physical, science agricultural science, life science english
What it means to be a grade 12 learner?
Friday, February 18, 2011 at 8:36am

Physical science
The acceleration due to gravity on earth
Friday, February 18, 2011 at 7:22am

English
I left out these few statements on the themes I would like you to check. Thank you very much. 1.Macbeth is the shortest of S’s tragedies; it is simple in its plot but complex in its psychological analyses of what takes place in the mind of the criminal. 2. The hero starts...
Thursday, February 17, 2011 at 6:15pm

chem.
sodium metal is insoluble in ether. sodium metal dissolves in water to produce a gas. The copper bottom on a frying pan turns black after several heatings. Are these physical or chemical changes..
Wednesday, February 16, 2011 at 5:45pm

child day care management,health,safety,and nutrit
Q; What are the three main factors in a readiness model? A.maturation,learning,and motivation B.height,weight,and age C.psychological,social,and physical D.age,inteligence,and agility My answer is A is that corect? tks
Wednesday, February 16, 2011 at 3:44pm

physical
a police siren emits a sinusoidal wave with frequency f=300hz.the speed of sound is 340ms. find the wave lenght of the waves if the siren is at rest in the air
Wednesday, February 16, 2011 at 2:57pm

child day care management,health,safety,and nutrit
Q; neuron development and elaboration,which occurs between birth and age 10,is prompted by A.aural prompts from the family,school,and environment. B.physical movement on the part of the child C. intake of foods rich in vitamins and minerals D. exposures to different ...
Wednesday, February 16, 2011 at 1:03pm

science
Teacher gave us homework that I really dont understand. We must write chemical reactions by which we differentiate alcohols, esters, hydrogenic carbon,carboxylic acid and halogen alkanes from each other. We must not write the same reaction for two different compounds and we ...
Wednesday, February 16, 2011 at 12:06pm

chemistry
Teacher gave us homework that I really dont understand. We must write chemical reactions by which we differentiate alcohols, esters, hydrogenic carbon,carboxylic acid and halogen alkanes from each other. We must not write the same reaction for two different compounds and we ...
Tuesday, February 15, 2011 at 1:33pm

child development
(Penn Foster) 1- Neueon development and elaboration, which occurs between birth and age 10, is prompted by: A -aural prompts from the famiy school and environment. B-physical movement on the part of the child C- Intake of foods rich in vitamins and minerals D- exposures to ...
Monday, February 14, 2011 at 4:08pm

physical science
Atoms in a molecule are held together through shared __________.
Monday, February 14, 2011 at 2:19pm

Physical Science
Two 125 kg bumper cars are moving toward each other in opposite directions. Car X is moving at 10 m/s and Car Z at –12 m/s when they collide head–on. If the resulting velocity of Car Z after the collision is 10 m/s, what is the velocity of Car X after the collision?
Monday, February 14, 2011 at 9:56am

physical science
What formula can be used to find the surface area on the rate of reaction, when adding rennies or cal-C-vitas to vinegar?
Sunday, February 13, 2011 at 1:44pm

physical science
A front end of modern cars are designed to crumple in the event of head-on-collision. (a) why are cars now designed to crumple on impact?
Sunday, February 13, 2011 at 12:27am

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...
Saturday, February 12, 2011 at 2:27pm

Teacher's Aide: Helping Abused Children
1. The Stubborn Child Law enacted by Massachusetts in 1646 permitted parents to A. use corporal punishment when children disobeyed them. B. keep children out of school if they were needed for family work purposes. C. institutionalize a child born with a physical or mental ...
Friday, February 11, 2011 at 1:58pm

physical science
the influence of the magnitude of the surface area on the rate of reaction of a specific reaction using rennies tables
Friday, February 11, 2011 at 7:22am

world history
can you check these answers for me please. 1.Among early hunting and gathering peoples, the commonly occurring mark that looks like a "P" is thought to stand for a? a. woman b.symbol for a calender c.favored animal d.powerful male leader 2.Relative to related species...
Friday, February 11, 2011 at 1:24am

CRIMINOLOGY
Describe a physical traits of the trait theories associated with criminal behavior and provide an example of a recent criminal who exhibits this trait.Might this crime be prevented in future circumstances?
Thursday, February 10, 2011 at 9:07pm

CRIMINOLOGY
Describe one of the psychological or physical traits of the trait theories associated with criminal behavior and provide an example of a recent criminal who exhibits this trait.Might this crime be prevented in future circumstances?
Thursday, February 10, 2011 at 6:40pm

Physical science
Compare the number of valence electrons an oxygen atom has with the number of valence electrons a selenium atom has. Are oxygen and selenium in the same period or group?
Wednesday, February 9, 2011 at 10:27pm

Physical therapy aide
A pta can supervise a physical therapy aide to perform all of the following except
Wednesday, February 9, 2011 at 3:36pm

physical science
A projectile is launched upward at an angle of 75 from the horizontal and strikes the ground a certain distance away. For what other angle would it have the same range?
Wednesday, February 9, 2011 at 12:22am

college physical science
What is the force exerted by a train travelling from rest to 120 mph in 15 min? The train weighs 200,000 lbs.
Tuesday, February 8, 2011 at 3:16pm

AP European History
I have to write an essay answering the following questions: What is the relationship between the study of geography and the study of history? What are the advantages and disadvantages of Europe’s geography? Explain the impact of Europe’s geography on European History...
Tuesday, February 8, 2011 at 11:51am

CRIMINOLOGY
what is one physical factor that may cause one a life of criminal behavior
Monday, February 7, 2011 at 9:44pm

Earth and Physical Science
A 901 kg car is traveling north down a country road when a deer crosses in front of the car. By slamming on the breaks, the care is able to decelerate at 4.0 meters per second squared. What is the frictional force between the street and the car?
Monday, February 7, 2011 at 7:52pm

Physical Science
Suppose you dissolve 40g of potassium nitrate in 100 cm3 of water at 100 C. If half the solution os poured out, how many grams of potassium nitrate will the remaining solution contain?
Monday, February 7, 2011 at 7:13pm

Physical science
An object is projected vertically upwards and returns to the point of projection 12s later. Ignore air resistance and determine the velocity with which it was projected?
Monday, February 7, 2011 at 12:45pm

AP European History
What is the relationship between the study of geography and the study of history? What are the advantages and disadvantages of Europe’s geography? Explain the impact of Europe’s geography on European History. This is what I have so far: How are geography and history ...
Monday, February 7, 2011 at 12:25pm

Physical Science
A player uses a hockey stick to increase the speed of a 0.200kg hockey puck by 6 m.s in 2 seconds. A) How much did the hockey puck accelerate? B) How much force was exerted on the puck? C) How much force did the puck exert on the stick?
Monday, February 7, 2011 at 1:57am

social studies
Why do cultural groups settle in specific physical environments
Sunday, February 6, 2011 at 12:35pm

Physical Science
What is my potential energy if I weigh 60kg and I jump 3 meters in the air?
Saturday, February 5, 2011 at 9:14am

physical
A boy throws a stone vertically up to a man standing at a heigt of 2 m above the boy. Of the stone is thrown up with a velocity of 7.0m s what is the velocity of the stone at the instant when it is caught by the man. A clear explaination is greatly appreciated
Saturday, February 5, 2011 at 3:34am

physical science
a car traveling along the highway needs a certain amount of force exerted on it to stop.more stopping force may be required when the car has: ;
Friday, February 4, 2011 at 2:57pm

physical
A car starts from rest its acceleration is 2m.s-2 in a straight line. What is it displacement after 10 seconds?
Friday, February 4, 2011 at 9:57am

physical chemistry
1 kg aluminum dumbbell initially held 2 meters above the floor is allowed to fall. This experiment is performed inside a room whose dimensions are 10m × 5m × 3m. Assuming that the walls of the room do not conduct heat and that the room is empty (no other objects ...
Thursday, February 3, 2011 at 5:06pm

biology
is my biology paper good so far? Im not done. its about lifestyle disease A lifestyle disease (also called diseases of longevity or diseases of civilization) is an inappropriate relationship between people and their environment that results to having a disease. When you eat a ...
Thursday, February 3, 2011 at 3:58pm

physical
what is the minimum length of the mirror needed to view the whole body at any distance?
Thursday, February 3, 2011 at 3:51am

Physical science
alot of my questions deal with speed and height. what are the different types formula I can use to figure these things out
Wednesday, February 2, 2011 at 10:14pm

physical
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 142-kg laser sensor that measures the thickness of the ice (see the drawing). The helicopter and the sensor both move only in the horizontal direction and have a horizontal acceleration of ...
Wednesday, February 2, 2011 at 8:59pm

physical science
What is Final Velocity? I don't understand it at all!!
Wednesday, February 2, 2011 at 8:45pm

physical science
Riding his bike, Dewayne can start from rest and get going at 12 m/s in 4 seconds. Beth can get going 16 m/s in 5 seconds. Who has a greater acceleration? How do you know?
Wednesday, February 2, 2011 at 11:58am

Physical science
List the charge, mass, and location of each of the three subatomic particles found within atoms
Tuesday, February 1, 2011 at 11:22pm

Physical Science
Who discovered Respiration?..Ever single time i google it, it comes up as cellular respiration..i need breathing respiration..please help me!!!!! ~;D~
Tuesday, February 1, 2011 at 8:06pm

chemistry
A student conducts this experiment and finds the boiling point of the unknown to be 80 ± 3 °C. Use the table in the Physical Properties experiment to select all of the following compounds which might be the unknown
Tuesday, February 1, 2011 at 8:03pm

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